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920.4, 952.4 Supplement to User Manual

1. MTZ 920 4 952 4 WITH ENGINE D 245 43S3A D 245 5S3A 920 4 0000010 OM OPERATING MANUAL Supplement to operating manual for MTZ 920 3 952 3 tractors MTZ 2009 MTZ 920 4 952 4 Operating manual CONTENTS L Tractor description and OperatiOb dpa AA AA ANA ao b EE EE 4 L2 ke GG AN 4 EZ AA EE 4 1 2 2 Main parameters SEENEN 5 1 3 Tractor structure and operation Co 2 4242 4 45430 dec cete non Gaba a dada kaan 9 UE GE Controls and Instt mae EE 9 1 3 2 WALCHOF starter and instruments s ooi SE pe pi En is Ro lau VEU owes 9 1 5 5 Insttument CIS TOR nama a hodie pb AMEN ee ote uec uem AA AA dades tette tiat 10 1 954 2 PATODTATHD UMC cacecucectecuacincnsieaistses ap eto soon Abano AA a 12 1325 Inte erated RE 13 1 3 6 Designation and principle of operation of integrated display indicators 13 I 3cr Integrated Ala e IANNIS EE 17 1 3 8 Description of instrument function check 17 1 3 9 Integrated display program E TEE 18 130 Dashboard sWe NCS ee EE AA 20 LSL EE NO 5259060919491 NAN tide bosco ee LE Ls met 21 1 5 l2 Doubleslever sear box CODITOL EE 21 UE AA ka a PA AY 21 1 3 12 2 Shifting of ranges and gears in GB with double lever control 22 2 Tractor components description and operatnon kaanak 24 SEET EE 24 2 2 Electronic engine control system for D 245 43S3A D 245 583A cece eee ee eee ee ees 24 2 2 General eh deer Ee Te EE 24 2 2 2 Adjust brightness
2. SA5 Windshield wiper switch 1 SA6 Starter and instrument switch 1 COBO Italy SA7 Understeering combined switch 1 SA8 Battery switch 1 SA9 Windshield washer switch 1 SA10 Central light switch 1 SA11 Start lock switch BK12 41 1 For 1025 4 1221 4 Start lock switch BK 2 41 1 For 920 4 950 4 1021 4 SA12 Flashing beacon switch 1 SB1 Emergency stop signaling switch 1 SB2 Brake light switch 1 SB3 Park brake light switch 1 SP1 Air filter clogging sensor 1 SP2 HSU emergency oil pressure sensor 1 SP3 Pneumatic system emergency air pres 1 sure indicator UZ1 Voltage converter 1 XP1 1 XP116 Single pin terminal block 16 XP2 1 XP2 7 Two pin terminal block 7 XP4 1 XP4 2 Four pin terminal block 2 XP6 1 Six pin terminal block 1 XS1 1 Single pin female receptacle 20 XS1 20 Re 1 XS2 4 XS2 6 XS2 Two pin female receptacle 18 XS3 1 XS3 2 XS3 4 Three pin female receptacle 3 XS4 1 Four pin female receptacle 1 XS5 1 XSS 2 Five pin female receptacle for relay 9 XS5 5 XS2 10 switch 51 MTZ 920 4 952 4 Operating manual End of Table A 1 Designation Name Qty Note XS6 1 XS6 2 Six pin female receptacle 2 XS7 1 XS7 2 Seven pin female receptacle 2 XS8 1 XS8 6 Eight pin female receptacle for switches 7 XS8 8 XS8 7 Eight pin female receptacle 1 XS9 1 XSIA Nine pin female receptacle 4 XS13 1 XS13 2 13 pin female receptacle 2
3. emerges during work the display emits a sound signal and a blinking windows pops up with description of last errors failures ATTENTION THE ENGINE IS STOPPED BY TURING THE STARTER AND IN STRUMENT SWITCH TO OFF POSITION Table 4 List of parameters of graphic and four section indication of engine operation presentation tation Voltage directly on the connec 1 tion terminals of the information display V Voltage at battery terminals 2 measured by electronic control unit of engine V 3 Fuel consumption Fuel consumption ch Coolant temperature in engine BC AA DIT HN Pam 5 GEES mmemm ge 2 Operating manual MTZ 920 4 952 4 V CS6 V 0C6 ZLIA SIN Jo YESS CF OU VESEY Src d 10 ais ojuoo ULUI JO Jed 197M0 107 ureJ8erp SUNIY p c omar Jeun eyeseBis euiBue uonsnquioo Jeuiejur pue e 2ejde 2e1 eouelddy Joy ulejs s Jo uoo 3Iuo42e 3 4o9elq 1g 19 014 A Ae1B 19 pue O uMwolq 1g Dal y ueeiD gt MOJA A and g PYM M sinoJoo AM INO3 Ul 0G PUI L 8 T yoqms 2sIp Aiayeq GL Jeuiuue AZI 0L A d P 4ojoeuuoo aysoubeig Azi HY 8H ou 6 uo Bulyjims Jueuingsul Jaye N23 Jo 2203 AO g As z AO Kjddns 1ewod jo Aejay Leite Anp Kaeey 4303 0 9 8 o z euis 4203 0 8 Au s 203 Az 8b Y 303 a LI Fu A
4. where energy of compressed air is required Figure 2 6 shows the pneumatic drive diagram 1 2 3 4 5 6 7 16 15 14 13 12 11 10 9 8 1 4 5 coupling heads 2 control manifold 3 brake valve single wire 6 connecting line 7 supply line 8 line from engine intake manifold 9 compressor 10 air bleed valve 11 pressure regulator 12 condensate drain valve 13 cylinder 14 air pressure sensor 15 emergency air pressure sensor 16 brake valve single wire Figure 2 6 Trailer brake pneumatic drive diagram 31 MTZ 920 4 952 4 Operating manual Air is taken to the pneumatic drive from the engine intake manifold through the line 8 Figure 2 6 The air is compressed in the compressor 9 and delivered to the cylinder 13 through the pressure regulator 11 maintaining required pressure in the cylinder From the cylinder com pressed air goes to the brake valves 3 and 16 and to the supply line 7 with the coupling head 4 with red cap that is always under pressure The brake valve 3 is connected through the control manifold 2 with the coupling head 1 with yellow cap There is no pressure in it The brake valve 16 is connected through the connecting line 6 with the coupling head 5 with black cap Brakes of trailers and agricultural machines are controlled in two modes direct and auto matic When connecting a trailer with a single wire pneumatic drive the trailer head is connected to the coupling head 5 F
5. 1t 44 MTZ 920 4 952 4 Operating manual remove the basic filter element 3 check if there dirt in the master filter element MFE without removing it from its hous ing blow the filter element with compressed air first from inside then from outside to com pletely remove dust To avoid a break of the paper blind air pressure must not exceed 0 2 to 0 3 MPa Direct the air jet at an angle to the filter element surface During maintenance work pro tect the filter element from mechanical damages and contamination with oil ATTENTION DO NOT BLOW THE BFE WITH EXHAUST GASES OR RINSE IN DIESEL FUEL ATTENTION REMOVING THE MFE FROM ITS HOUSING IS NOT RECOM MENDED DIRT IN THE MFE INDICATES A FAILED BFE BREAK OF THE PAPER SHUTTER LOOSE BOND OF THE BOTTOM IN SUCH A CASE RINSE THE MFE AND REPLACE THE BFE clean the supply pipe the inner surfaces of the casing and pan of the air cleaner of dust and dirt check condition of the sealing rings assemble the air cleaner in the reverse order make sure that the BFE is correctly installed in the housing and close the latches 1 set the hood mask to its original position Figure 3 3 Check of engine air cleaner ATTENTION AFTER ASSEMBLING THE AIR CLEANER CHECK TIGHTNESS OF ALL INTAKE CONNECTIONS IF THE CHECK REVEALS ANY FAULTS OR DAMAGES FIND OUT THEIR REASON AND TAKE MEASURES TO ELIMINATE THEM 45 MTZ 920 4 952 4 Operating manual Operation 6a Check
6. 4 952 4 Operating manual 1 TRACTOR DESCRIPTION AND OPERATION 1 1 Tractor designation Tractor MTZ 920 4 is manufactured on the base of tractor MTZ 920 3 Tractor MTZ 952 4 is manufactured on the base of tractor MTZ 952 3 Tractors MTZ 920 4 952 4 are designed for executing various agricultural works with mounted semi mounted and trailed machines and implements for loading unloading works trans portation works and for driving stationary agricultural machines they are supplied to consumers in the Republic of Belarus and abroad 1 2 Technical characteristics 1 2 1 General description The tractors MTZ 920 4 952 4 represent universal row crop tractors of drawbar catego ry 1 4 The tractors MTZ 920 4 are equipped with engine D 245 43S3A produced by Minsk motor works with electronic control system with power of 62 kW Engine conforms to environ mental requirement of stage III A according to harmful substance emission Tractors MTZ 952 4 is equipped with engine D 245 5S3A produced by Minsk motor works with electronic control system with power of 70 kW Engine conforms to environmental requirement of stage III A according to harmful substance emission Clutch coupling friction single disk closed circuit mechanically controlled Clutch facings cerametallic Gearbox mechanical synchronized with synchronized accelerator doubling number of gears Rear axle with
7. B ig er u A 303 AZ 90 HY as j 4 OG3 ui gh jeuwiel AZt EL I8 M y fi AS k eer A st g indino SAI xoq Meed oyu V 08 asnt oj O M g 7H A naui SA V Oc asf 0 o 5 3 3 2504 GE E a a wajsAs juswdinba oL oi 7 6 lt DE NG PP UN g CP D Cat LD wi V T A Z A0 ZE AS 0 eubis pagi pueH O 1z leuis LET M z AS Bi Iddy Y 9 Ao eubis epad 1g E 8 1 AO LI A 9 0 eubis epad 9 ZH 9 4 jeubis ur 1 AS A Gr 8 mano SAI E g 17 A indui SAI 9 lt KH SOMXKORLOSOVHQOONCCKKK F jaued lo uo 28 MTZ 920 4 952 4 Operating manual Annex to Figure 2 4 Elements of wiring diagram for outer part of engine control system for D 245 43S3A D 245 5S3A of tractors MTZ 920 4 952 4 1 switching and security unit 2 CAN bus connector 3 forward trace accelerator pedal 4 diagnostics indicator 5 diagnostics button 6 information display 7 plug connector for diagnostic device connection 8 plug connector 89 pins 9 hand fuel supply sensor Annex B contains the electric circuit diagram of rear axle DL and PTO drive control system of MTZ 920 4 952 4 tractors with list of components 2 3 Wet brakes and rear axle differential lock clutch 2 3 1 General information In order to improve tractor brakes energy consumption their reliability and durability brakes opera
8. GB THE GB CON TROL MECHANISM WAS DESIGNED WITH LOCKING SIMULTANEOUS ENGAGEMENT OF THE 4 DIRECT GEAR AND THE P STAGE OF RANGE REDUCING GEAR THERE FORE ENGAGEMENT OF THE AT DIRECT GEAR CAN BE POSSIBLE ONLY IF THE II STAGE OF RANGE REDUCING GEAR IS ENGAGED B Release the clutch coupling pedal start to move slowly in the selected gear ATTENTION DO NOT HOLD YOUR FOOT ON THE CLUTCH PEDAL DURING TRACTOR OPERATION IT WIL ALLOW TO AVOID SLIPPING OF CLUTCH COUPLING RESULTING IN OVERHEAT OR PREMATURE FAILURE OF THE CLUTCH 27 MTZ 920 4 952 4 Operating manual NOTE Your tractor can be equipped with one lever GB control where gears are shifted and stages of the range reducing gear are selected by the same one lever placed under the right hand of the operator Rules of operation of GB controlled by one lever placed under the right hand of the operator are presented m 900 0000010 OM 23 MTZ 920 4 952 4 Operating manual 2 TRACTOR COMPONENTS DESCRIPTION AND OPERATION 2 1 D 245 43S3A D 245 5S3A engine Information about the design troubleshooting rules of operation and maintenance of the D 245 43S3A D 245 5S3A engines are described in the engine operating manual 245 S3A 0000100 OM applied to your tractor 2 2 Electronic engine control system for D 245 43S3A D 245 5S3A 2 2 1 General Information The electronic engine control system Figure 2 2 includes the electronic unit 7 the infor mation display 3 the control pan
9. HEATER VALVE MUST BE CLOSED TO PREVENT SIMULTANEOUS OPERATION OF THE AIR HEATING AND COOLING SYSTEMS 2 5 2 Climate system control in heating mode ATTENTION REFILL THE ENGINE COOLING SYSTEM ONLY WITH AN ANTI FREEZE AGENT For efficient operation of the heating system observe the following recommendations 1 After refilling the cooling system with antifreeze agent start the engine and without open ing the valve let the engine work at medium speed to have the antifreeze agent in the cooling system warmed up to 70 to 80 C after that open the valve increase the engine speed and let it work for 1 to 2 minutes to have the heat exchanger filled with the agent Make sure that the antifreeze agent is circu lating through the heater The heat exchanger must warm up The coolant level in the heat exchanger of the engine cooling system will drop at that 2 Add coolant to the heat exchanger to the required level up to the MAX mark on the expansion tank 3 To have the cab quickly warmed up turn on the heater fan and open the recirculating shutters 37 MTZ 920 4 952 4 Operating manual 4 To discharge the coolant from the engine heater and cooling system install the tractor on an even surface Remove the extension tank plug of the engine cooling system open the valve on the cylinder block in the rear part of the engine and disconnect the heater hoses before the entry to the cab posts ATTENTION WHEN WORKING IN THE HEATING MOD
10. air from the trailer cylinder to the brake chambers and the trailer stops Direct control of the brakes is performed due to pressure rise in the control manifold 2 up to 0 65 0 8 MPa when the tractor decelerates In such a case the supply line 7 remains under pressure and delivery of compressed air to the trailer pneumatic system is preserved Automatic control of the brakes automatic braking is performed in case of a break of the coupling and disconnection of the trailer due to pressure drop in the trailer supply line In the pneumatic drive the valve coupling heads 1 4 5 are installed The coupling head valves prevent air loss in case of use of the pneumatic drive without a trailer for example for tire inflation and in case of an emergency disconnection of a trailer When the trailer brake lines are connected with the tractor lines the coupling head valves open ensuring passage of compressed air from the tractor pneumatic drive to the trailer At that it is recommended to connect the pneu matic lines when there is no pressure in the cylinder 13 of the tractor Air pressure in the cylinder 13 is monitored with the air pressure indicator and the red emergency air pressure lamp installed on the instrument panel the air pressure sensor 14 and the emergency air pressure sensor 15 32 MTZ 920 4 952 4 Operating manual To drain condensate from the cylinder 13 the condensate drain valve 12 is provided To drain condensate tilt the
11. and contrast of display mdicator 0 cee e cece eee cece eee eeneeees 26 2 2 3 Call up changeable presentations and parameters to dsplay cc ccececeeee eee eeeees 26 2 3 Wet brakes and rear axle differential lock clutch aaa aaa 20 2 9 Creneral INO MANONG Sus aee sui uds Pesca eur deban Ad eden ANA 20 2 3 2 Wet service and park brakes wet brakes Control 30 2 5 5 Differential lock Etude ee trat en tih Cher eee ER RARE TIERE NE AT ERE 30 24 A Taller Drake EIOS voro AA 3 2 4 E te o AA POP ad e O 3 2 4 2 Combined trailer brake pneumatic drive csse 31 24 2 General informatiOm EE 31 2 4 2 2 Check and adjust drive of single wire and two wire brake valves of pneumatic system 33 DAS Trailer brake My rau Ci Ve EE 34 2 2 9 b Genera APP 34 2 4 3 2 Adjustment of trailer brake hydraulic dree 30 2 9 Cab air conditioning and heating Systeni usos bu edere teense nanu luae qi OF 2 5 Climate system control in air conditioning mode RE P DA alab LLL UP Ebo Dus iet 3T 2 5 2 Climate system control in heating mode oerte ertet to REI oo Epor eei 37 2 5 3 General arrangement and operation of cab air conditioning and heating system 38 2 5 4 Air conditioning unit troubleshooting maa 41 2 0 IC CHIC CQUIPING PAA PAA oue cip pedhat 41 AN Ba PA AA 42 Sr PA AA AU HO 42 3 2 Maintenance of tractor components cece eee cece KAKA eese sehe eene ns 43 EE AA M 49 PUA beer 56 MTZ 920 4 952 4 Operating manual The
12. between the finger 2 and the upper edges of the grooves in the arms If there is no gap remove the finger 2 and adjust the length of the arm by turning the end 1 5 Check and adjust as necessary compressing of the spring 3 to a size of 3541 25 mm by rotating the nuts 4 and lock them Check valve operation according to clause 3 6 If air pressure as per the pressure gage connected to the coupling head has not reached the required value replace the brake valve B ATTENTION WITH THE BRAKE VALVE B FIGURE 2 7 AND ITS DRIVE CORRECTLY ADJUSTED PRESSURE AS PER THE PRESSURE GAGE CONNECTED TO THE COUPLING HEAD WITH A YELLOW CAP MUST BE EQUAL TO ZERO WHEN THE INTERLOCKED BRAKE PEDALS ARE NOT PRESSED AND WHEN THE PARK BRAKE IS FULLY DISENGAGED 2 4 3 Trailer brake hydraulic drive 2 4 3 1 General information The tractors MTZ 920 4 952 4 can be equipped with trailer brake hydraulic drive Trailer brake hydraulic drive is interconnected with service brake control of tractor MTZ 920 4 and secures actuation of wheel brakes of trailer or semi trailer equipped with the system of brake hydraulic drive Hydraulic connecting line is powered from pump of hydraulic lift linkage which provides pressure from 10 to 15 MPa and is designed as single line brake system Hydrau lic drive linking up conforms to standard ISO 5676 dated 1983 Trailer brake hydraulic drive consists of mechanically controlled brake valve 3 Figure 2 8 which is a
13. by measuring the distance be tween wheel center and supporting surface IT IS PROHIBITED TO CHANGE ENTERED VALUES OF EVERY OTHER PARA METERS FACTORY SETTINGS When switching on the instrument dial illumination i e when shifting main light switch 7 Figure 1 1 into position II Dash panel illumination and side marker lights are turned on and position III Consumers of II position and front road headlamps are turned on light intensity of MI display of PTO indicator segments reduces automatically 1 3 10 Dashboard switches a 5 Figure 1 1 remote battery disconnect switch When pressing the button unfixed of remote battery disconnect switch storage batteries switch on and after repeated pressing they switch off b 6 Figure 1 1 windshield washer switch When pressing the button unfixed windshield washer switches on c 7 Figure 1 1 main light switch has three positions Switched off upper part of the button in the photo is sunken I position Front marker and tail license plate and instrument panel lights as well as additional lights on trailed machine are switched on middle position ID All consumers of II position and road headlamps are switched on lower part of the button in the photo is pressed to the full IT d 8 Figure 1 1 switch of front headlights installed on brackets of front lights When the key 8 is pressed two front headlights located on brackets
14. cavity the friction torque developed at that provides locking the rear axle differential The clutch is made in a single housing with the service brake has an oil bath common with it is sealed with the cover 20 and the special corrugated hood 23 of the oil supply adapter 21 in the diaphragm working cavity Note Your tractor can be equipped with dry twin disk or tipple disk brakes Information about the design and adjustments of dry brakes is presented in the 900 0000010 OM document 30 MTZ 920 4 952 4 Operating manual 2 4 Trailer brake drive 2 4 1 General information Your tractor can be equipped with a combined trailer brake pneumatic drive or trailer brake hydraulic drive Short information about the design and main adjustments of the combined trailer brake pneumatic drive is presented in the Section 2 4 2 Short information about the design and main adjustments of the trailer brake hydraulic drive is presented in the Section 2 4 3 ATTENTION PERFORM ADJUSTMENT OR TROUBLESHOOTING OF THE TRACTOR TRAILER BRAKE SYSTEM AND BRAKE DRIVE ONLY WHEN THE ENGINE IS SHUT OFF AND THE TRACTOR IS ON AN EVEN SURFACE BLOCKED WITH BRAKE SHOES PUT UNDER THE WHEELS WHICH EXCLUDE SPONTANEOUS MOVEMENT OF THE TRACTOR 2 4 2 Combined trailer brake pneumatic drive 2 4 2 General information MTZ 920 4 952 4 tractors can be equipped with a combined trailer brake pneumatic drive The pneumatic drive can also be used to inflate tires and for other purposes
15. charging func green tion IO TAO Y Storage battery is discharged red ation 12 0 13 0 V no storage battery charg Sus 199 charsingcvollads Storage battery has normal charge 15 0 16 0 V Overcharging of storage red battery E EES Poe Rated EMF of Storage battery 12 7 V ATTENTION IF VOLTAGE INDICATOR DISPLAYS ABSENCE OF STORAGE BATTERY CHARGING CHECK THE STATE AND TENSION OF GENERATOR DRIVING BELT Engine coolant temperature gauge 4 Fig 1 3 reads information from engine control module ECM Gauge scale has three areas operating area from 70 to 100 C green information area from 40 to 70 C yellow emergency area from 105 to 120 C red High temperature alarm lamp red 4 1 Fig 1 3 is built into the gauge scale it works in two mod es a lights up and works in a flashing mode at coolant temperature values from 109 to 112 C in clusive b is constantly glows at coolant temperature values from 113 C and above Engine lubricating system oil pressure indicator 5 Fig 1 3 reads information from engine control module ECM Gauge scale has three areas operating area from 100 to 500 kPa green emergency areas two 0 to 100 kPa and from 500 to 600 kPa red 11 MTZ 920 4 952 4 Operating manual Alarm lamp of emergency oil pressure drop red 5 1 Fig 1 3 is built into the gauge scale and lights up when oil pressure drops below 100 kPa Note During th
16. coarse fuel filter must be performed in accordance with the instructions of this manual To replace the filter element of the coarse fuel filter on the MTZ 920 4 952 4 tractor per form the following unscrew the spent filter element 4 Figure 3 5 of the coarse fuel filter if the catchment cup 5 is to be reused unscrew it from the spent filter element then lubri cate the sealing 6 between the new filter element and the catchment cup with motor oil screw on the catchment cup to the new filter element manually screw on the new filter element until the seal seal between the filter element 4 and the filter housing 2 tightly fits to the surface of the filter housing continue screwing on the filter element manually by 3 4 turn then bleed air from the fuel line to do that unscrew the air bleeding screw 1 and pump air with the manual pump 3 at the spot pointed to by the arrow until fuel without air bubbles emerges from the air bleed screw hole tighten back the air bleed screw check tightness of all fuel line connections no fuel leakage is allowed 47 MTZ 920 4 952 4 Operating manual Figure 3 4 Replacement of filter element of coarse fuel filter 48 MTZ 920 4 952 4 Operating manual Annex A informative Flectric circuit diagram Table A 1 lists items of the electric circuit diagram presented on Figure A 1 Tabl
17. frame below condenser before the CAC heat exchanger filter drain on the condenser frame pressure sensor on the filter drain 38 MTZ 920 4 952 4 Operating manual cooler heater under the roof over the ventilation box panel cold air regulator and fan switch on the upper section panel service valves on the fittings near the compressor and the filter drain Tractor cab roof d lt EY y f E CT 11 i 9 6 8 o gt 2 1 filter drain 2 refrigerating fluid delivery line from filter drain to cooler heater 3 refrigerating fluid delivery line from compressor to condenser 4 cooler heater 5 refrigerat ing fluid delivery line from engine cooling system to cooler heater 6 refrigerating fluid delivery line from heater cooler to compressor 7 quick release hoses coupling between a cab and filter drain 8 quick release hoses coupling between a cab and a compressor 9 compressor 10 con denser 11 refrigerating fluid delivery line from condenser to filter drain Figure 2 12 Arrangement of main elements of cab air conditioning and heating system The climate system starts operating in the air conditioning mode with the engine running when the desired fan speed is set with the switch 1 Figure 2 10 and the switch 2 Figure 2 10 is set to the beginning of the blue scale At that voltage is supplied to the electromagnetic coupling of the compressor through th
18. of front lights and the light indicator built into the key are switched on e 9 Figure 1 1 switch of hazard warning flasher Pressing the button actuates hazard warning flasher Control lamp built into the button flashes simultaneously with flashing warning light Ha zard warning flasher shuts down after repeated pressing the button 9 f 10 Figure 1 1 Multi function switch under steering wheel Secures the switching on of turn signals low high beam of road headlamps signaling flashing with high beam and horn Turn signals switch on when lever is shifted forward a right turn or backward Ch left turn from middle position in accordance with figure 1 8 After tractor makes a turn the lever returns to initial position automatically To switch on road headlamps set main light switch 7 Figure 1 1 into III position see above and switch lever into middle position c low beam in accordance with figure 1 8 High beam should be switched on by turning the switch lever forward as far as it will go Cd position Low High beam positions of the lever are fixed When pulling the lever backward as far as it will go e position Figure 1 8 from low beam position unfixed switching on of high beam high beam flashing occurs irrespective of main light switch position 20 MTZ 920 4 952 4 Operating manual Figure 1 8 Multi function switch Horn is actuated when pressing on the le
19. operating manual is intended for study of arrangement operating rules and mainten ance of the tractors MTZ 920 4 952 4 The present manual is a supplement of operating manual 900 0000010 OM and should be enclosed together with this manual Read carefully through this manual operating manual 900 0000010 OM operating manual for diesel engine 245 SIA 0000100 OM enclosed with your tractor It will help you to get ac quainted with methods of proper operation and maintenance Failure to follow this instruction can result in operator s injuries and tractor breakings Tractor operation its maintenance and repairing must be carried out only by the specialists acquainted with all its characteristics and informed about necessary safety requirements to prevent accidents Due to constant development of tractor changes which are not shown in the present oper ating manual can be introduced into design of some assembly units and parts All unspecified changes introduced into structure of any assembly units by the consumer release the manufacturer from responsibility for subsequent operator s injuries and tractor break ings Accepted abbreviations and legend ECM Engine control module FPFV frequency probe of fuel volume ID Integrated display MD Multifunction display IDPC Integrated display program console OM Operating manual Other abbreviations and legend are given in Operating manual 900 0000010 OM MTZ 920
20. the engine lubrication system After a second and third stroke on the button 2 the screen shows four parameters in analog form Using the adjustment mode the user can call as necessary presentation of various engine parameters as listed in Table 4 to the screen Press the button 5 to enter the adjustment mode Se quential pressing of the button 1 changes indicated parameters in the upper left corner the button 2 in the upper right corner the button 3 in the lower left corner the button 4 in the lower right corner Press the button 5 to exit the adjustment mode Press the button 3 to call the graphic parameter presentation in time works as an analog re corder of parameters Required parameters listed in Table 4 are selected by sequentially pressing the button 3 The time grid can be set up in the configuration menu from 2 10 or 30 minutes to 1 2 4 or 8 hours To open the configuration menu enter the code PIN number To open the PIN num ber window press the button 5 for over 3 seconds This menu also allows selecting metric or im 26 MTZ 920 4 952 4 Operating manual perial units of measurement as well as English Spanish Swedish French German Italian Dutch Portuguese and Russian among the available languages ATTENTION ONLY DEALERS ARE ALLOWED TO CHANGE PARAMETERS OF THE CONFIGURATION MENU Press the button 4 to call error failure list Browse the list with the buttons 1 and 2 When any error failure
21. time for rear lift linkage from the lowermost position into uppermost position with test load on the suspension axle s at least c drawbar hitch 1 virtual displacement of coupling point mm in horizontal plane relative to tractor longitudinal axis in vertical plane relative to ground surface on the basic configuration tires mm 2 distance between PTO end and tow ing yoke hole axis mm 3 opening mm depth height P To be specified depending on the configuration Value for tractor MTZ 3 2 For tires 18 4R34 4000 45 20 2 0 65 2 160 with intervals of 8045 200 500 395410 65 2 6242 MTZ 920 4 952 4 Operating manual 1 3 Tractor structure and operation 1 3 1 Controls and Instruments This operating manual gives description and principle of operation of only controls and in struments specified in section 1 3 1 Location designation and principle of operation of other con trols levers pedals key switches etc are similar to MTZ 920 3 952 3 and are represented in Op erating manual RE 900 0000010 attached to tractors MTZ 920 4 952 4 1 Control handle of heater control valve 2 Climatic installation control panel 3 Deflectors 4 Switch of starter and instruments 5 Remote battery disconnect switch 6 Windshield washer switch 7 Main light switch 8 switch of front headlights installed on brackets of front lights 9 Switch of haza
22. turn on the system in the cooling mode with the ambient temperature above 15 C for 15 to 20 minutes Independently of operating conditions operation of the system must be checked once a year at a service station with special equipment When putting the tractor to short term storage no preparation work is carried out for the air conditioning system During storage turn on the air conditioner each 15 days for 15 to 20 minutes with the engine running The air temperature in the tractor cab must be not less than 20 C When putting the tractor to long term storage check operation of the air conditioning sys tem with special equipment If necessary refill with refrigerating fluid During storage no service Work is carried out When removing from storage have the air conditioning system serviced by a special service sta tion with diagnostic equipment Other details on maintenance and servicing of the air conditioning and heating system of the cab are given in 3 2 Maintenance of tractor components of this manual WARNINGS 1 ONLY SPECIALLY TRAINED PERSONNEL IS ALLOWED TO PERFORM MAIN TENANCE AND REPAIR WORKS FOR THE AIR CONDITIONING SYSTEM 2 ANY WORK RELATED TO DISCONNECTION OF THE AIR CONDITIONING SYSTEM ELEMENTS MUST BE PERFORMED BY TRAINED PERSONNEL WITH USE OF SPECIAL EQUIPMENT FOR MAINTENANCE OF AIR CONDITIONERS THE SYSTEM IS UNDER HIGH PRESSURE EVEN WHEN IT IS OFF 3 BEFORE STOPPING THE TRACTOR ENGINE MAKE SURE TO TURN OFF TH
23. 5 1 Alarm lamp of emergency engine lubricating system oil pressure Figure 1 3 Instrument cluster 10 MTZ 920 4 952 4 Operating manual Scale of fuel gauge 1 Fig 1 3 has sections 0 1 4 1 2 3 4 1 Alarm lamp 1 1 is built into the gauge scale Fig 1 3 orange which lights up when fuel quantity in tank drops down to 1 8 of total tank capacity ATTENTION AVOID USING THE FUEL TO REACH THE STATE OF DRY TANK IN DICATOR NEEDLE IS IN ORANGE AREA Scale of pneumatic system air pressure gauge 2 Fig 1 3 has three areas operating area from 500 to 800 kPa green emergency area two from 0 to 500 kPa and from 800 to 1000 kPa red Alarm lamp 2 1 Fig 1 3 red is built into the gauge scale and it lights up when pneumatic pres sure drops down below 500 kPa Voltage indicator 3 Fig 1 3 shows storage batteries voltage with shut down engine when the switch key of starter and instruments Fig 1 2 is in I position When the engine is running voltage indicator shows voltage across generator terminals Red alarm lamp 3 1 Fig 1 3 is built into the voltage in dicator scale It is used only in 24V starting system shows the charging process of the second sto rage battery with 24V voltage tests performance of voltage converter State of power supply system Table 2 Area on the scale of voltage State of power supply system indicator 3 Fig 1 3 color with shut down engine 13 0 15 0 V normal
24. 57 MTZ 920 4 952 4 Operating manual 58
25. ARE NOT PRESSED AND THE PARK EMERGENCY BRAKE IS COMPLETELY DISENGAGED WHICH MUST BE ADJUSTED FIRST 36 MTZ 920 4 952 4 Operating manual 2 5 Cab air conditioning and heating system 2 5 1 Climate system control in air conditioning mode The climate system control panel is in the center of the upper panel of the cab The control panel has the switches 1 and 2 Figure 2 10 l 2 sigla e me slm ML Na UNO APAT we ad eww PAPA AL gg 9909 ee ee e HO 6 90 09 09 0 9 0 ni 4 TITLED AA Vr AKA AA Figure 2 10 Controls of cab air conditioning and heating system With the switch 1 you can adjust air flow by changing fan speed With the switch 2 you can change temperature of cold and dry air going out of the deflectors in the air conditioning mode ATTENTION AIR CONDITIONER CAN BE TURNED ON AND OPERATE ONLY WHEN THE ENGINE IS RUNNING To turn on the conditioner proceed as follows turn the switch 2 Figure 2 10 clockwise by 180 C to the beginning of the blue scale then turn the switch 1 to one of the three marked positions the fan impeller has three speeds In 3 5 minutes use the switch 2 to adjust the desired temperature in the cab with the shutters located on the upper panel near to the operator s head the mix of exter nal and recirculating air can be adjusted To turn off the air conditioner turn both switches 1 and 2 counterclockwise to O position ATTENTION WHEN WORKING IN THE COOLING MODE THE
26. E AIR CONDITIONER 4 THE R134A REFRIGERATING FLUID IS NONTOXIC NONFLAMMABLE DOES NOT FORM EXPLOSIVE MIXTURES THE REFRIGERATING FLUID BOILING TEMPER ATURE IS MINUS 27 C UNDER NORMAL CONDITIONS IN CASE OF SKIN CONTACT THE REFRIGERATING FLUID IMMEDIATELY EVAPORATES AND CAN CAUSE SUPER COOLING OF SKIN AREAS 5 WHEN DISCONNECTING THE TRACTOR THE CLOSED AIR CONDITIONING SYSTEM CAN BE DETACHED BY DISCONNECTING THE QUICK RELEASE COUPL INGS 40 MTZ 920 4 952 4 Operating manual 2 5 4 Air conditioning unit troubleshooting Table 6 The electromagnetic coupling of the compressor does not operate when turning the temperature regulator no distinctive metallic click is heard 1 Electric equipment failure 2 Coolant leak oc curred Air conditioner fan engine does not Electric equipment When the air conditioner is in the heating mode warm air is supplied to the cab Leak of refrigerating fluid from cab ventilation box sealing of the valve IIO 11 or BC11 damaged Broken pipes of the heat exchanger dam age from frost due to incomplete discharge when working with water during cold sea Son With a tester or multimeter check operation of the pressure sensor unit the sensor unit terminals the red and pink wires must create a continuous circuit Check operation of the electric cir cuit connections from the compres sor coupling to the air conditioner control panel Find the refrigerating fluid
27. E THE SWITCH 2 FIG URE 2 10 MUST BE FULLY OFF TO PREVENT SIMULTANEOUS OPERATION OF THE AIR HEATING AND COOLING SYSTEMS 2 5 3 General arrangement and operation of cab air conditioning and heating system The cab air conditioning and heating system is intended to create and maintain normal mi croclimate in the tractor cab The air conditioning system consists of two circuits cooling and heating Figure 2 11 shows the system layout The cooling circuit includes a compressor a condenser a filter drain with pressure sensor an evaporator and heat exchanger unit cooler heater a cooler heater fan connection hoses with a set of quick couplings electric cables air filters a cool air regulator and a fan switch The heating circuit is filled with hoses connected to the tractor engine cooling system and a shutoff cock Quick release hose coupling between cab and compressor Quick release hose coupling between cab and filter drain au reel Hose D inner 6 X To engine cooling system Filter drain KJ eS Heating section Evaporator cooling section of heat exchanger unit of heat exchanger unit Condenser Heater valve m Jose D inner 10 pa EE b a From engine cooling system Quick release hose coupling between cab and compressor 6 4 Compressor Figure 2 11 Cab air conditioning and heating system Arrangement of the air conditioning system elements compressor from the left on the half
28. NGES OF SYSTEM SENSOR STATES a 5 figure 1 5 headlight high beam pilot lamp indicator Illuminates when headlight high beam is switched on b 6 7 figure 1 5 tractor and trailer turn pilot indicators Operate in flashing mode when right or left turn signal is switched on by multi function underwheel switch 10 figure 1 5 or when the switch of hazard warning lights is on c 8 figure 1 5 parking brake pilot lamp indicator Parking brake indicator operates in flash ing mode with Hz frequency when parking brake sensor goes off d 9 figure 1 5 high on board system voltage pilot lamp indicator Switches on when tractor on board system voltage exceeds 19V and goes out when supply voltage level goes down to 17V In this case ID switches off completely and recovers its operational capability when the voltage goes down to rated value of on board system voltage e 10 figure 1 5 coolant low level pilot lamp indicator Lights up when coolant level in recovery bottle drops below 20 of general level 1 3 8 Description of instrument function check In the course of every connection to power supply needle indicators and elements of PTO indica tor scale in the ID are checked for functioning And during a second at most indicator needles de viate from initial marks and run over the first following digitized scale marks over 5 for the speed and over 10 for revolutions and all segments and indi
29. O WET BRAKES AND VICE VERSA FOR THE SAKE OF SAFETY OF TRACTOR OPERATION The intermediate disks 3 Figure 2 5 are fixed to prevent rotation in housings 1 13 with shoulders made on the external circuit Tightness of oil baths is ensured by O rings 15 24 gaskets 10 14 and rubber hoods 5 23 The housings have the check plugs 22 and the drain plugs 12 The MTZ 920 4 952 4 tractors are equipped with a wet four disk park brake 8 Figure 2 5 made in the same housing with the service brake Parts of the park brake are common with parts of the service brakes The service brake control drive of MTZ 920 4 952 4 is mechanical through levers and pedals The park brake is driven mechanically The service and park brake control drives of wet brakes are principally the same as ones used for dry brakes of the respective tractor model The wet service and park brakes adjustment are performed each 500 service hours of the tractor in the process of performing MS 2 Techniques of checking and adjusting wet service and park brake see in Maintenance Operation 32a of the 900 0000010 OM IT IS FORBIDDEN TO OPERATE BRAKES WITHOUT OIL OR WITH INSUFFI CIENT OIL LEVEL 2 3 3 Differential lock wet clutch The lock clutch 17 Figure 2 5 has six discs with metal ceramic friction pads installed on the spline hub 18 tied with the axle drive gear 16 The pack of six friction and five intermediate disks is compressed when oil is delivered under pressure into the diaphragm
30. V from 0 to 600 List of programmed coefficients graphic examples of displaying parameters and their values in programming mode Parameter Z Z number of gear teeth of final shafts of driving wheels right and left above which speed sensor sender are installed I raising ratio correction factor of wheel hub drive 4 000 Parameter R R R rear wheel rolling radius mm In case of reprogramming it is possible 7 7 0 to change this parameter with 5 mm increment Note 770 is the value for tires 18 4R34 In case of new types of tires set the parameter R value which corresponds to rolling radius of installed tires KV 2 D 4 D Parameter KV2 KV2 power take off shaft PTO ratio 0 ZV number of gear teeth of PTO speed sender S d Parameter ZV Note if the sender is not installed O value should be entered Parameter V V fuel tank volume 1 Also in programming mode when pressing on Parameter button in the list of programmed parameters independent parameter T of refined con tent of astronomical engine operating time meter is displayed This para meter can not be changed it gives precise value up to 1 10 hour of en gine operating time 19 MTZ 920 4 952 4 Operating manual During the operational process it is allowed to change the value of parameter wheel rolling radius R that is defined on the basis of tires installed on tractor
31. XS2 5 Female receptacle 30 16 06570 1 COBO Italy XS3 3 Female receptacle 30 16 06571 1 COBO Italy XS5 3 Female receptacle 469 59 00 00 1 AVAR JSC XS10 1 Terminal block 1 0967240 1 1 AMP Germany Cylindrical connectors XS12 1 XS12 2 Socket LLICS2I112I M 7 2 XS12 3 Socket LLIC32I112I MT 7 1 XS15 1 Socket LLICS6Y 15 M 6 1 XP12 1 XP12 2 Plug LLIC32I TK 12LLI MT 7 2 XP123 Plug LLIC32I112LLI MT 7 1 XP15 1 Plug LLIC35TTK 1 5LLI MT 6 1 XA9 1 Socket 1 XT1 Splitting unit 1 XT2 1 XT2 2 Panel 2 XTS3 1 XT3 2 Panel 2 WA1 Antenna 1 I2 M TZ 920 4 952 4 Operating manual 53 go sd Ee mi qi ma Ar Figure A 1 Electric circuit diagram Operating manual MTZ 920 4 952 4 T Joos y oun agas AB a Er jd weds ZOE v sent nest IER AL GG ao AED DI auta ALAMAT Um 104 e1nBi4 aas 158 soy aml aas Sol 104 G alnfi q aini l8 SX Ad TE M iJ aB aas 1881 10 4 Fj L I 7 ainbl4 LUIS AS BUES Az L UU y uondo BINBI4 aas 18531104 KEE p ainbi4 LES jeinbr4 aas 4831104 L n H C anly uis Ap a Ja E at of eal a scil ge TE EB ERIS 736 E UL BS Sa EL a rie LH EIERER ER AA 3 d um Sidt Wi I bee 37 HTH z DA ZO A Dys hui z tod mm Ch uo3eard IEUDIS LIA den c uondo 134634 oupole LA Dux 8d ay jeuonipunoa Je ula E uando uondo 54 MTZ 920 4 952 4 Operating manual To Figure A 1 Wire colors I blue TU blue b
32. adjust tension of the air conditioner compressor drive belt Check adjust tension of the air conditioner compressor drive belt tension of the belt 1 of the air conditioner drive Figure 3 4 is deemed normal if deflection of its branch from the engine crankshaft pulley to the compressor pulley as measured in the middle point is 4 to 6 mm when a force of 39 2 0 N is applied perpendicularly to the middle part of the branch Figure 3 4 Check adjust tension of the air conditioner compressor drive belt Adjust tension of the air conditioner compressor drive belt adjust tension of the belt 1 Figure 3 4 by turning the compressor 2 around the rotation axis A and tightening the threaded coupling B in the groove of the sector C After adjustment the belt deflection under a force of 39 2 0 N applied perpendicularly to the middle part of the branch must be 4 to 6 mm Operation 7a Check tightening of the bolts fastening the CAC air ducts Check and tighten up as necessary the bolts fastening the CAC air ducts The tightening torque of the CAC air duct clamps must be 10 to 15 Nem Operation 8a Check the oil level in the wet brake housings To check the oil level in the wet brakes housing perform the following install the tractor on an even surface unscrew the check filler plugs 22 Figure 2 5 in the right and left brake housings the oil level in the brake housings must up to the hole edges of the check filler plugs 22
33. al identification of transmission switch position digits from 0 to 6 or letter identifica tion of reduction unit switch position letters L M H N 2 current numerical value of one of tractor system parameters Figure 6 MD information fields Integrated display receives information on transmission switch position from transmission control module if combined electronic control system CECS is available or from range reduction unit control module if available This parameter is displayed in information field 1 Fig 1 6 If control modules are not available or are not connected or wire is broken letter A is displayed in the information field 1 Following parameters are displayed in information field 2 Fig 1 6 Total elapsed operating time of engine Instantaneous fuel consumption On board system voltage Remaining fuel volume Operation time with remaining fuel Operability diagnostics of speed sensors Operability diagnostics of frequency probe of fuel volume FPFV Diagnostics of operability and connection of CAN bus to ID Selection of display modes among Total elapsed operating time of engine Instantaneous fuel consumption Remaining fuel volume Operation time with remaining fuel On board sys tem voltage failure messages is made with Mode button of program console 14 Fig 1 1 De scription of operation algorithms of modes Operability diagnostics o
34. ation Figure 2 4 shows the electric circuit diagram of the external part of the control system of the D 245 43S3A D 245 5S3A engines of the MTZ 920 4 952 4 tractor 1 diagnostics activation button switch 2 failure diagnostics indicator 3 cigarette ligh ter 4 information display 5 panel 5 appliance receptacle 12 V 25 A Figure 2 1 Engine control system panel 24 VESS SPT C VESEY SPT C 10 Ways As JoNUOD oUIsU cc ANSIA Tepod 00 oruodo o ONUOD opoui SUTSUA g jun ouoo surgu JUON 4 run uon 99 01d pu SUTYSIIMS 9 JAY Oo1guoo enueuir opoui urgu foued JoNUODS p Ke dsip uoneuuojur c 1032euuoo juouidimbo oysougerp g Sassau gy uonooeuuoo Operating manual MTZ 920 4 952 4 KA Ero O0 a pu E Dd A al iN em SK K lh e Ol RR ee HE IT TI LL 25 MTZ 920 4 952 4 Operating manual 2 2 2 Adjust brightness and contrast of display indicator Press the button 5 Figure 2 3 to enter the display brightness and contrast adjustment mode In the lower part of the screen button images are shown Press the button 1 to reduce brightness press the button 2 to increase brightness press the button 3 to reduce contrast press the button 4 to increase contrast press the buttons 1 2 3 4 simultaneously to set the medium contrast and maxi mum brightness Press the button 5 again to exit the brightness and contrast adjus
35. cations 540 and 1000 of PTO scale are activated 17 MTZ 920 4 952 4 Operating manual 1 3 9 Integrated display program console XP1 Program console 14 figure 1 1 allows to perform manual pro gramming of indicator by means of Parameter and Value buttons see figure 1 7 to change the displaying mode for pa rameters displayed on LCD display Note There is a diagnostic slot XP1 on console front surface that allows to perform automatic programming reprogram ming of ID by means of a special instrument if available If it varue P is not available reprogramming is performed by means of the PARAMETER buttons mentioned above XP is not enabled on tractors MTZ 952 4 920 4 Figure 1 7 Integrated display program console ID programming algorithm 1 When selecting specified value of programming parameter 1 1 When pressing Parameter button for the first time see figure 7 LCD display goes to the mode of viewing the programmed parameter identification and its numerical value Cyclic change of parameters occurs during the repeated button pressings 1 2 When consecutively pressing Value button see figure 7 numerical value of set programmed parameter changes 1 3 Mode exit is fulfilled automatically when Parameter and Value buttons have not been pressed for 7 sec In case of mode exit the last parameter values selected with Value button are stored 2 When entering non
36. ctuated by pull rod 2 connected to tractor parking brake pedals and clutch 1 that connects brake drive system of trailer or semi trailer with tractor brake hydraulic drive Trailer brake hydraulic drive is powered sequentially from pump 6 of tractor hydraulic lift linkage by means of high pressure hoses 4 5 ATTENTION TRACTOR EQUIPPED WITH TRAILER BRAKE HYDRAULIC DRIVE CAN NOT BE GANGED UP WITH TRAILERS THAT HAVE SERVICE BRAKE HYDRAULIC DRIVE 34 M TZ 920 4 952 4 Operating manua l 1 clutch 2 pull rod 3 brake valve 4 5 high pressure horses 6 pump Figure 2 8 Trailer brake hydraulic drive MTZ 920 4 952 4 Operating manual 2 4 3 2 Adjustment of trailer brake hydraulic drive Adjustment of trailer brake hydraulic drive consists in adjustment of pull rod 2 Fig 2 9 of brake valve 1 Dimension A 0 5 to 1 mm between the finger and the upper edges of the grooves in the arms should be checked when service brake pedals are released while changing it by means of the end 2 of the pull rod 4 rotation Dimension B 35 1 25 mm between lower edge of the end 4 and upper nut 3 Fig 2 9 should be secured through rotation of nuts 3 and locking them after the adjustment Mag HE am fai ELi NS e ENN A 1 brake valve 2 pull rod 3 nut 4 rod end Figure 2 9 Adjustment of brake valve pull rod ATTENTION ADJUST THE BRAKE VALVE DRIVE WHEN THE SERVICE BRAKE PEDALS
37. d lock them Check valve operation as per clause 3 6 If air pressure as per the pressure gage connected to the coupling head has not reached the required value replace the brake valve A ATTENTION WITH THE BRAKE VALVE A FIGURE 2 7 AND ITS DRIVE CORRECTLY ADJUSTED PRESSURE AS PER THE PRESSURE GAGE CONNECTED TO THE COUPLING HEAD WITH A BLACK CAP MUST DROP TO ZERO IN CASE OF A FULL TRAVEL OF THE INTERLOCKED BRAKE PEDALS OR WHEN THE PARK BRAKE IS FULLY ENGAGED 33 MTZ 920 4 952 4 Operating manual Check the drive of the two wire brake valve B Figure 2 7 as follows 1 Connect a pressure gage with a scale of 1 MPa min to the coupling head with yellow cap of the tractor pneumatic drive 2 Turn on the compressor and fill the cylinder with air to reach pressure of 0 77 to 0 8 MPa as per the pressure gage located on the instrument panel 3 Air pressure as per the pressure gage connected to the coupling head with a yellow cap of the control manifold must be equal to zero Move the interlocked brake pedals to a full travel The pressure must rise to 0 65 0 8 MPa Release the brake pedals Engage the parking brake by shifting its handle to the maximum extent The pressure must be raised to 0 65 0 8 MPa If the pressure according to the pressure gage connected to the control connection line head does not cor respond to the above values perform the following actions 4 Check availability of a clearance gap of 1 to 2 mm
38. e A 1 Designation Name Qty Note Al Cassette radio recorder 1 A2 Spark plugs 6 Supplied with engine For 920 4 952 4 1025 4 4 pcs A3 Control panel with tachome 1 ter speedometer with CAN A4 Air conditioner 1 A4 1 Air processing unit 1 Supplied with conditioner A4 1 1 Output air temperature regulator 1 Supplied with conditioner A4 2 Compressor condenser unit 1 Supplied with conditioner A4 3 Pressure sensor unit 1 Supplied with conditioner M7 Fan electric motor 1 Supplied with conditioner S1 Fan mode selector 1 Supplied with conditioner BA1 BA2 Loud speaker 2 Supplied with radio cassette recorder BN1 Fuel volume sensor 1 BP1 Pneumatic system air pressure indicator 1 BP2 Gearbox oil pressure sensor 1 For 1025 4 1221 4 BV1 BV3 Speed sensor 2 BV2 PTO speed sensor 1 For 1221 4 with PTO speed sensor E1 E2 Road headlight 2 E3 E4 E6 E7 Working headlight 4 E5 Interior lamp 1 E8 Number plate light 1 EL 1 EL2 Lamp AKG12 60 55 1 2 Included into E1 E2 EL 3 EL4 EL13 EL 14 Lamp AKG12 55 1 4 Included into E3 E4 E6 E7 EL5 EL7 EL9 EL10 EL18 Lamp A12 5 7 Included into HL1 HL5 E8 EL19 EL8 EL11 EL12 EL15 Lamp A12 21 3 7 Included into HL4 HL5 E5 HL6 HL7 EL17 EL20 EL22 EL16 EL21 Lamp A12 10 2 Included into HL6 HL7 49 MTZ 920 4 952 4 Operating manual Table A 1 continued Designation Name Qty Note F1 Fuse block 1 F2 Fuse b
39. e cold engine starting the pressure can come up to 600 kPa Attention IF LOW PRESSURE LAMP IS ON WITH THE ENGINE RUNNING STOP THE ENGINE IMMEDIATELY AND ELIMINATE THE MALFUNCTION 1 3 4 Pilot lamp unit The pilot lamp unit 12 fig 1 1 is located on the dashboard and includes three lamps Layout chart of pilot lamps corresponds to Figure 1 4 20 30 40 Bly 50 Ri 4 SA i Signal lamp of emergency oil pressure drop in hydrostatic power steering system red Siganl lamp of heating plugs orange Signal lamp of maximum clogging of air cleaner filter orange Figure 1 4 Pilot lamp unit Principles of pilot lamps operation shown in Figure 1 4 are described in the 900 0000010 OM 12 MTZ 920 4 952 4 Operating manual 1 3 5 Integrated display Integrated display 13 Fig 1 1 hereafter ID and program console of integrated display 14 Fig 1 1 hereafter PU display information on performance parameters of tractor systems and assemblies and provide operator with data on malfunction and failure of some system ID includes indicators and announciating lamps according to Figure 1 5 40 UNTI 1 speedometer needle indicator 2 tachometer needle indicator 3 PTO tachometer indicator lamp 3 1 3 5 segments of PTO speed scale yellow 3 2 3 3 3 4 segments of PTO speed scale green 4 1 4 2 announciators of PTO speed scale ranges yellow 5 high beam pilot la
40. e con trol circuit The coupling is engaged transferring rotation from the engine crankshaft pulley to the compressor shaft The compressor pumps the refrigerating fluid through the elements of the air condi tioning system At that the refrigerating fluid absorbs heat from the air passing through the cooler heater and then releasing heat to the environment through the condenser The air conditioning system can automatically maintain the preset temperature that is set by turning the switch 2 Figure 2 10 controlling the thermostat Turning clockwise will decrease the temperature setting turning counterclockwise will increase it Protection from critical conditions is ensured by the pressure sensor and the thermostat The sensor turns off the system when the pressure is too high over 2 6 0 2 MPa or too low below 0 21 0 03 MPa pressure The thermostat turns off the system when the temperature of the cooling section of the heat exchanger unit drops too low Per formance of the system is adjusted by the fan speed and the thermostat The compressor can operate at that both continuously and cyclically Table 5 presents main parameters and characteristics of the cab air conditioning and heating system 39 MTZ 920 4 952 4 Operating manual Table 5 Parameter characteristic name 12 prtm V Ip Compressor drive belt AV X 13x1200 In case of nonregular operation in order to maintain good condition it is recommended once in every 15 days to
41. el 4 the engine mode manual control lever 5 the engine mode electronic foot pedal 8 the switching and protection unit 6 which are installed in the tractor cab and connected to each other by cables 1 The system is powered from the battery via the switching and protection unit as per the electric circuit diagram presented in Figure 2 4 After the starter and instrument switch is turned from the OFF to Instrument power posi tion the system is powered up When the supply voltage is supplied the system performs self diagnostics If no errors in system operation are found the failure signal indicator 2 Figure 2 1 on the engine control system panel should go on and off and the information display 4 Figure 2 1 switches to the operating mode If an error is found the information display emits a sound signal and the screen shows a short description of detected errors error code designation and its description as well as the failure signal indicator 2 on the engine control system panel flashes or blinks Error code interpretation as well as advised actions for troubleshooting of the detected errors are described in the engine operating manual 245 S3A 0000100 OM enclosed to your tractor Eliminate detected errors before starting the engine The engine is started by turning and holding the starter and instrument switch in the Starter ON position After the engine starts the display shows actually measured parameters of engine oper
42. f speed sensors Operabili ty diagnostics of frequency probe of fuel volume FPEV Diagnostics of operability and connec tion of CAN bus to ID is given above Total elapsed operating time of engine in hours m ds Counter amasses information on total time of engine opera tion when message engine speed is transmitted from ECM A o A93 999 and stores it when power supply is disconnected h Readout range is from 0 to 99999 of engine operating hours 2 Instantaneous fuel consumption This mode displays current value of instantaneous fuel consumption rea Hd dout resolution is 0 1 1 h Uh 15 MTZ 920 4 952 4 Operating manual 3 On board system voltage 3 This mode displays current value of system voltage in digital form 4 Remaining fuel volume This mode displays current fuel amount in tank in liters This mode is available only on stopped tractor when there are no signals from speed sensors Note Tractor should be stopped on horizontal surface in order to increase displaying accuracy of fuel amount in tank 5 Operation time with remaining fuel V This mode displays anticipated time of engine operation calculated for J q current values of instantaneous fuel consumption and remaining fuel h ID in the mode of failure messages displaying 1 Diagnostics of speed sensor operability and connection When signals from speed sensors are missing for n E AG aa 10 12 seconds LCD display
43. igure 2 6 and air goes to the trailer pneumatic drive When the brake pedal is pressed on or the park brake is engaged compressed air through the brake valve 16 is vented from the connecting line 6 to atmosphere The air distributor operates on the trailer supplying compressed air from the trailer cylind ers to the brake chambers and the trailer stops If the trailer is disconnected in case of emergency the coupling heads are disconnected air from the trailer line is vented to atmosphere and the trai ler stops automatically Direct control of the brakes is performed due to pressure drop in the connecting line 6 up to 0 MPa when the tractor decelerates In such a case delivery of compressed air to the trailer pneu matic system stops Automatic control of the brakes automatic braking is performed in case of a break of the coupling and disconnection of the trailer due to pressure drop in the trailer connecting line When a trailer with a two wire pneumatic drive is used the trailer coupling heads are con nected to the coupling heads 4 Figure 2 6 with red cap and 1 with yellow cap i e to the supply line 7 and to the control manifold 2 At that compressed air constantly flows to the trailer through the supply line 7 When the brake pedal is pressed on or the park brake is engaged compressed air through the brake valve 3 and the control manifold 2 is supplied to the trailer The air distributor operates on the trailer supplying compressed
44. l 900 0000010 OM sup plied with your tractor Kinds of scheduled maintenance MS procedure contents of scheduled maintenance opera tions MS as well as names brands quantity intervals of change of fuels and lubricants of D 245 43S3A D 245 5S3A engines installed on the MTZ 920 4 952 4 tractors are described in the engine operating manual 24583A 0000100 OM supplied with your tractor This manual provides only description of those operations that due to variation in design of MTZ 920 4 952 4 tractors from models MTZ 920 3 952 3 differ in maintenance operations for the MTZ 920 3 952 3 tractors or are not performed for MTZ 920 3 952 3 Before you carry out any maintenance work raise then lock the tractor hood and as neces sary remove the both sides Figure 3 1 To do that proceed as follows pull the handle 2 and raise the hood 1 by the grip 3 lock the hood 1 with the arm 4 make sure that the hood 1 is securely locked in the raised position as necessary remove the left side 6 and the right side 5 first unscrewing three mounting bolts 7 on each side To provide access to the expansion tank of the engine cooling system open the hatch 8 Figure 3 1 first unlocking the lock 9 DO NOT OPEN THE HOOD 1 FIGURE 3 1 AND THE HATCH 8 AT THE SAME TIME Mechanism of opening the hood and locking it open Mechanism of opening the hatch Figure 3 1 Mechanism of opening the hood and the hatch locking the h
45. lack XK yellow 2K3 yellow green 3 green K red KOK red yellow Ku brown O orange P pink C grey C3 grey green D violet 4 black HO black orange Figure A 2 presents the electric circuit diagram of connections of additional front head lights installed on brackets of front lights ELA S XP23 XP23 593 3 29x 325 KP1B X516 XP2A Figure A 2 Electric circuit diagram of connections of additional front headlights To Figure A 2 E5 E6 headlight EL8 EL13 AKG12 55 1 lamp SA11 headlight switch Note Table A 1 lists names of other items of the diagram on Figure A 2 55 MTZ 920 4 952 4 Operating manual Annex B informative Electric circuit diagram of rear axle DL and PTO control system The components list of electric circuit diagram of rear axle DL and PTO control system shown in Figure B 1 is specified in Table B 1 Table B 1 Designation Name Qty Note A1 A2 Electromagnet KBM36T 2 A1 DL A2 PTO EL1 EL2 Pilot lamp 12 3803 31 TU RB 2 EL1 DL EL2 PTO 300228919 037 2002 EL3 EL4 Pilot lamp 2202 3803 34 TU 2 EL3 DL EL4 PTO 37 003 1109 82 K1 K2 Relay 90 3747 TU 37 003 1418 94 2 SA1 Switch I1150M 06 14 TU RB799 01 97 1 DL SA2 Switch 1150 06 17TU RB 37 003 701 75 1 DL SA3 Switch 1147M 01 17 TU RB 1 PTO 14795799 001 97 SA4 Switch 1147 01 17 TU 37 003 701 75 1 PTO SA5 Swi
46. leak Spot Detection of leaks replacement of hoses and components is performed by trained personnel with use of special equipment warranty service and repair is performed by Belvne shinvest CJSC Minsk tel fax 375 17 262 40 75 4 375 29 662 97 69 375 29 628 67 98 Check condition of the respective fuse 25A see the electric circuit diagram Annex A on the fuse block F4 located on the instrument panel Replace if faul ty With a test lamp check availability of power at the air conditioner engine M7 Annex A with the switch ON and the engine ground available If the electric circuits are in good condition but there is no power at M7 replace the switch Replace the valve IIO 11 or BC11 Replace the climate unit of the conditioner Note Instead of a climate system a heater fan can be installed on your tractor Control and design of the fan heater is described in the operating manual 900 0000010 OM supplied with your tractor 2 6 Electric equipment Annex A contains the electric circuit diagram of MTZ 920 4 952 4 1025 4 1221 4 tractors with a list of components 41 MTZ 920 4 952 4 Operating manual 3 MAINTENANCE 3 1 Maintenance of tractor Kinds of scheduled maintenance MS procedure contents of scheduled maintenance opera tions MS as well as names brands quantity intervals of change of fuels and lubricants of MTZ 920 4 952 4 tractor chassis are described in the operating manua
47. lock 1 F3 Fuse block 1 F4 Fuse block 1 F5 Fuse block 1 F6 Fuse block 1 FU1 Fuse 1 Supplied with radio cassette recorder FU2 FU3 Fuse link 25 A 2 G1 Generator 1 Supplied with engine GB1 GB2 Battery 12V 120 Ah 2 For 1221 4 Battery 12V 88 Ah 2 For 920 4 950 4 1025 4 HA1 High pitch horn 1 HA2 Low pitch horn 1 HA3 Signal switch buzzer 1 HA4 Horn 1 HG1 Indicator lamp block 1 HL1 HL3 Road train lamp 3 HL4 HL5 Front lamp 2 HL6 HL7 Rear lamp 2 HL8 Signal beacon 1 K1 Spark plug relay switch 1 K2 Instrumentation power supply relay 1 switch K3 K4 K7 K10 Normally open relay switch 30A 6 K5 Normally closed relay switch 20A K6 Starter relay switch 1 KH1 Turn indicator breaker 1 KT1 Spark plug unit 1 M1 Heater fan 1 M2 Parallel motion windshield wiper 1 M3 Starter 1 Supplied with engine M4 Electric washer 1 M5 Rear window wiper 1 M6 Heater motor 1 P1 Display integrated with CAN 1 50 MTZ 920 4 952 4 Operating manual Table A 1 continued Designation Name Qty Note P2 Instrument clusters KP 5 with CAN 1 For 920 4 950 4 Instrument clusters KP 6 with CAN 1 For MTZ 1025 4 1221A QS1 Remote battery switch 24V 1 R1 Ballast resistor 1 R2 Generator ballast resistor CAN 1 SA1 Roadtrain sign lamp switch 1 SA2 SA3 Headlight switch 2 SA4 Fan heater switch 1
48. lue for tractor MTZ 920 4 952 4 a structural weight 4150 100 b operating weight 4450 100 c maximum operating weight 7000 d shipping weight P 4250 floor pressures of driving machines MPa 0 14 10 Operating weight distribution over the axles kg a front axle 1750 50 b rear axle 2700 50 11 Allowable axle load kN a front axle 37 0 b rear axle 53 0 12 Maximum weight of towed trailer trailer brakes are interconnected with 9000 tractor brakes kg 13 Agrotechnical clearance under front axle rear axle and front axle tubes when interlocking of lift linkage lower 510 rods is installed at least mm 14 Wheel track dimension mm a front wheels 1420 1970 6 rear wheels 1500 1600 1800 2100 15 Minimal radius of turning in the middle of the outer front wheel mark at minimum wheel track applying partial 4 5 braking of the inner rear wheel m 16 Tractor wheelbase mm 2450420 0 85 ration at 80 engine load at least h 10 19 Mean time between failures of II and III complexity groups over the war 500 ranty period at least h MTZ 920 4 952 4 Operating manual Cont of Table 1 Parameter characteristic designation Value for tractor MTZ 920 4 952 4 20 Specific total operational mainten ance burden at least man hour h 0 026 21 Service life period years 10 22 Overall dimensions mm a length with ballast weights and rear lift linkage in transit condition 4440 50 b leng
49. main gear differential and final drives Differential lock control electrohy draulic Front driving axle with main gear self locking differential final drives planetary cylindrical reduction gears Front driving axle drive transfer case with automatic engagement of FDA two cardan shafts and intermediate bearing with overload clutch Service brakes multidisk oil bath lubricated wet installed on the shafts of driving pi nions of hub drives parking brake independent with independent manual control Trailer brake drive hydraulic interconnected with tractor brake control or combined pneumatic drive interconnected with tractor brake control Hydraulic system remote cylinder with hydraulic hoist with rear right hand duplicated outlets of hydraulic system Rear lift linkage NU 2 with adjustable braces NU lower links telescopic rod interlock ing outer by means of telescopic tie rods Rear power take off shaft PTO separate two speed 540 and 1000 min and synchron ous rotation direction clockwise from the side of shank end PTO shanks PTO 1 6 or 8 splines 540 min PTO 2 21 splines 1000 min Cabin unified protection securing safety microclimate protection against noise and vi bration Cabin is equipped with an electric wipers for front and rear windows and front window washer climatic unit and cabin heater Grammer sprung seat adjustable according to operator s height and weight Addi
50. ment is not needed 4 Because air pressure regulator is used in pneumatic system of improved design on the tractors MTZ 920 4 952 4 the operation 25 Filter cleaning of air pressure regulator in pneu matic system specified in the table of scheduled maintenance of the 900 0000010 OM operating manual is not needed Table 7 Maintenance works of MTZ 920 4 952 4 tractors Interval hours Operation name 10 1 000 la Check fastenings of air conditioner hoses x 2a Check clean air conditioner condenser sell 4T 3a Check clean conditioner drain pipes x ENEEN Remove condensate from the tanks of the heat ex changer of the engine charge air cooler CAC e 5a Check service engine air cleaner Check adjust tension of the air conditioner compres x sor drive 7a Check tightening of the bolts fastening the CAC air ELI ducts Check oil level in wet brake housings X Replace filter drain Each 800 service hours or ones a year 10a Change oil in wet brake housings x lla Replace filter element of coarse fuel filter x 43 MTZ 920 4 952 4 Operating manual Operation 1a Check fastening of air conditioner hoses The conditioner hoses must be securely fastened with tension bands Do not allow contact of the hoses with tractor s moving parts Operation 2a Check clean air conditioner condenser Check cleanliness of the air conditioner core If it is clogged clean the air condi
51. mp indicator blue 6 trailer turn pilot lamp indicator green 7 tractor turn pilot lamp indicator green 8 parking brake pilot lamp indicator red 9 high on board voltage pilot lamp indicator red 10 low coolant level pilot lamp indicator yellow 11 multifunction display Figure 1 5 Integrated display 1 3 6 Designation and principle of operation of integrated display indicators a 1 Fig 5 speedometer displays design tractor speed on needle indicator Design speed is higher than actual speed as far as tractor skidding is not considered 13 MTZ 920 4 952 4 Operating manual The indicator works upon signals from pulse sensors of final drive tooth gear speed of left and right rear tractor wheels Speed is indicated upon a signal from the sensor installed on final drive gear of the wheel rotating at lower speed If one of speed sensors is defective integrated display shows speed readouts with speedo meter upon the signal from nondefective sensor On LCD display of ID specific malfunction of circuits or speed sensors if signals from them are missing 1s represented in the form of digit O which defines malfunction location to the left and to the right see below b 2 Fig 1 5 tachometer displays engine crankshaft speed on needle indicator Information on engine speed on tractors MTZ 952 4 920 4 comes from electronic control module Speed readouts range is from 0 to 3500 r
52. on the front walls of the housings if necessary add oil through the holes of the plugs 22 screw the plugs 22 46 MTZ 920 4 952 4 Operating manual Operation 9a Replace the filter drain Performed once a year or after 800 service hours ATTENTION FOR REPLACEMENT OF FILTER DRAIN CONTACT A SPECIAL SERVICE STATION REPLACE ONLY USING SPECIAL EQUIPMENT Operation 10a Change oil in wet brake housings To drain the ol from the wet brake housings perform the following install the tractor on an even surface unscrew the check filler plugs 22 Figure 2 5 in the right and left brake housings unscrew the drain plugs 12 Figure 2 5 in the right and left brake housings and drain the oil into a container for waste oil screw the drain plugs 12 through the holes in the check filler plugs 22 fill oil to the both brake housings to the hole edges of the check filler plugs 22 on the front walls of the housings screw the check filler plugs 22 Notes 1 Perform operations of oil change in the brake housings simultaneously with oil change in the transmission The oil grade used for the brakes is the same as the oil grade used for the transmission 25 The total oil volume filled into the both brake housings is 2 5 0 1 liters Operation 11a Replace filter element of coarse fuel filter In accordance with Section 3 2 8 of the 24583A 0000100 OM document replacement of the coarse fuel filter or the filter element of the
53. ood open 3 2 Maintenance of tractor components 42 MTZ 920 4 952 4 Operating manual Table 7 lists maintenance works for the chassis and engine of the MTZ 920 4 952 4 trac tors to perform additionally to the maintenance works specified in the table of scheduled mainten ance of the operating manual 900 0000010 OM and Table 14 of the 245S3A 0000100 OM docu ment as well as operations that due to differences in the designs of the MTZ 920 4 952 4 and MTZ 920 3 952 3 models are to be performed instead of works specified in the manuals 900 0000010 OM and 245S3A 0000100 OM Notes 1 Instead of engine maintenance works 1 2 5 5a 8 19a 20 21 22 31 34 38 39 40 51 53 54 55 56 57 58 as listed in the table of scheduled maintenance on pages 109 111 of the op erating manual 900 0000010 OM perform maintenance works as listed in Section 3 MAIN TENANCE of the engine operating manual 245S3A 0000100 OM 2 Because the MTZ 920 4 952 4 tractors are equipped with the air cleaner Donaldson FPG09 0219 instead of operations on 4 7 12 13 as listed in table 14 of the 245S3A 0000100 OM document perform the operation 7a Table 7 of this manual 3 The engines of the MTZ 920 4 952 4 tractors are equipped with generators with auto matic seasonal voltage adjustment At that there is no Winter Summer seasonal voltage adjust ment screw Consequently performing MS operations 18 20 as listed in Table 14 of the 245S3A 0000100 OM docu
54. pm c 3 Fig 1 5 PTO tachometer displays PTO speed on indicator lamp PTO tachometer operates upon the frequency signal resulting from recalculation of engine speed by means of entered value of index KV2 see below other than O meanwhile value of index ZV equal to O should be entered see below When ID is switched on see below the description of device functional check and engine is running message engine speed from ECM is transmitted identifications of scales 540 and 1000 are illuminated simultaneously Indication of PTO scale segment with regard to the entered value of index KV2 occurs when PTO rated speed equal to 750 rpm is achieved For reference indication of lower PTO scale segment with regard to index KV2 occurs when engine speed of 1400 1500 rpm and above is achieved According to selected PTO speed mode 540 or 1000 illuminated scale segments identify value of PTO speed in accordance with given table 3 scale 650 580 500 3 4 5 Table 3 420 80 34 320 PTO speed mode of liquid crystal display 11 of multifunctional display Fig 1 5 see below the description of multifunctional display operation is not active in this case d 11 Fig 1 5 multifunctional display MD is a liquid crystal display displays informa tion in two fields at the same time see fig 1 6 MTZ 920 4 952 4 Operating manual digit
55. push bar with the ring aside and up Air bleeding from the pneumatic drive to inflate tires etc is performed through the air bleed valve 10 of the pressure regulator 11 2 4 2 2 Check and adjust drive of single wire and two wire brake valves of pneumatic system ATTENTION ADJUST THE BRAKE VALVE DRIVE WHEN THE SERVICE BRAKE PEDALS ARE NOT PRESSED AND THE PARK EMERGENCY BRAKE IS COMPLETELY DISENGAGED WHICH MUST BE ADJUSTED FIRST Figure 2 7 Check and adjust drive of single wire and two wire brake valves of pneumatic sys tem Check the drive of the single wire brake valve A Figure 2 7 as follows 1 Connect a pressure gage scaled of not less than 1 MPa to the coupling head with black cap of the tractor pneumatic drive 2 Turn on the compressor and fill the cylinder with air to a pressure of 0 77 to 0 8 MPa as per the pressure gage located on the instrument panel 3 Air pressure as per the pressure gage connected to the coupling head must be 0 77 MPa or higher or 0 53 MPa or higher for Hungary and Germany If it is lower than specified do as fol lows 4 Check availability of clearance gap of 1 to 2 mm between the finger 2 Figure 2 7 and the upper edges of the grooves in the arms If there is no gap remove the cotter pin and remove the finger 2 and adjust the length of the arm by turning the end 1 Higure 2 7 5 Check and adjust as necessary pressing of the spring 3 to a size of 3541 25 mm by rotat ing the nuts 4 an
56. r information plate on the right side cab window NOTE synchronized accelerator control rules are listed in 900 0000010 OM To engage a gear corresponding to the required speed of tractor movement perform the following actions A depress the clutch coupling pedal and select the required range in GB by shifting the range reducing gear lever 2 Figure 1 10 back and forth as per the information plate on its handle ATTENTION PASSES OF GEARING SHALL BE CARRIED OUT WHEN THE TRACTOR IS FULLY STOPPED AND CLUTCH COUPLING PEDAL IS DEPRESSED ATTENTION THERE IS NO NEUTRAL POSITION IN RANGE REDUCING GEAR IN GB THEREFORE EITHER THE TT OR THE II PASS OF GEARING IS ALWAYS AC TUATED IN THE REDUCING GEAR B depress the clutch coupling pedal and shift the gear shift lever 1 Figure 1 10 to the re quired gear position as per information plate on its handle ATTENTION ENGAGEMENT OF THE TT GEAR AND REVERSE GEAR SHALL BE CARRIED OUT WHEN THE TRACTOR IS STOPPED AND WITH CLUTCH COUPLING PEDAL DEPRESSED Shifting of the 1 gear and reverse gear and selection of pass of gearing also is not syn chronized and is carried out by sliding pinions when the tractor is fully stopped Before engage ment of the specified gears or range reducing gear stages release slightly and then fully depress the clutch coupling pedal The said technique ensures rotation of pinions and smooth engagement of gears and ranges ATTENTION TO EXCLUDE THE INCREASED NOISE LEVEL IN
57. rd warning flasher 10 Multi function underwheel switch turn indicator high low beams horn signaling with high beam 11 Instrument cluster 12 Signal lamp unit 13 Integrated display 14 Program console of integrated display Figure 1 1 Controls and instruments 1 3 2 Switch of starter and instruments Switch of starter and instruments 4 Fig 1 has four positions e 0 Switched off I Instruments pilot lamp unit glow plugs are switched on I Starter is switched on non retained position e TIT Radio receiver is on the key turned counterclockwise 9 MTZ 920 4 952 4 Operating manual Figure 1 2 Switch of starter and instruments ATTENTION STARTER REENGAGEMENT IS POSSIBLE ONLY AFTER RETURN ING THE KEY TO 0 SWITCH POSITION TO MOVE THE SWITCH OF STARTER AND INSTRUMENTS INTO III POSITION IT IS NECESSARY TO FORCE THE KEY INTO THE SWITCH AND TURN IT COUNTERCLOCKWISE 1 3 3 Instrument cluster Instrument cluster 11 fig 1 1 includes five indicators with alarm lamps fig 1 3 31 41 4 5 Fuel gauge 1 1 Reserve fuel level alarm lamp 2 Pneumatic system air pressure gauge 2 Emergency pneumatic system pressure alarm lamp 3 Voltage indicator 3 Indicator lamp of additional battery charging 4 Engine coolant temperature gauge 4 Engine coolant temperature alarm lamp 5 Engine lubricating system oil pressure indicator
58. shows a message in form of digit O characterizing location of de km h fective sensor left of right e o right wheel sensor km h T 2 Operability diagnostics of frequency probe of fuel volume FPFV When frequency signal from FPFV is missing for 2 seconds LCD display E u EL of ID displays FUEL message 3 Diagnostics of operability and connection of CAN bus to ID with CAN interface Absence of signal in CAN bus ID is accompanied with C BUS mes ST Every failure message Example 0 FUEL C BUS is displayed on LCD display in priority ir respective of information displayed When pressing Mode button consecutively there should be messages paging When viewing the last message and pressing Mode button again LCD display proceeds to the mapping mode according to the cycle of previously specified operating parameters 16 MTZ 920 4 952 4 Operating manual Failure message displaying on LCD display occurs during every switching on of the device up to the moment of failure cause removal Notes 1 When powering on the ID MD displays information in indication mode selected before the moment of ID power shut down 2 If there is no information on parameter values which are received from ECM only corres ponding indication modes switch off automatically 1 3 7 Integrated display pilot lamps ATTENTION PILOT LAMP INDICATORS SWITCH ON AND OFF SYNCHRONOUSLY WITH CHA
59. specified value of programming parameter 2 1 Select parameter which value needs to be set up with Parameter button 2 2 Press Mode button twice least significant digit of numerical value will start flashing on LCD display 2 3 The value of flashing parameter digit should be changed by pressing Value button 2 4 Transfer to more significant digit is fulfilled by pressing Parameter button 2 5 Exit from the programming mode of non specified value of any parameter is accomplished by double pressing of Mode button 2 6 After the exit from the said mode digits of the entered parameter value stop operating in flash ing mode 2 7 New entered value is placed as the last in the list of parameter values allowed for program ming Note in case of single pressing of Mode button in programming mode it is not possible to en ter arbitrary value of parameter if Mode Parameter and Value buttons have not been pressed for 7 seconds in the mode of entering non specified value of parameter ID goes to main mode of LCD display opera tion saving set parameter values 18 MTZ 920 4 952 4 Operating manual It is allowed to enter one non specified value within the range for Z from 23 to 69 for I from 1 000 to 4 000 for R from 400 to 1000 for K from 2 360 to 4 000 For ID without CAN interface for K V2 from 0 346 to 0 600 for ZV from 12 to 78 for
60. tch BK 12 1 MKC 642241 001 TU 1 PTO SB1 Switch BK 12 51 TU RB 37334210 004 1 DL 139 97 VD1 VD2 Diode KD 206 A TT 3 362 141 TU 2 Receptacles OST 37 003 032 88 XP1 Male receptacle 502601 1 XP2 1 XP2 2 Male receptacle 502602 2 XP4 Male receptacle 502604 1 XS2 1 XS2 2 Male receptacle 502602 2 XS4 Male receptacle 502604 1 Receptacles OST 37 003 032 88 XS5 1 XS5 2 Female receptacle 607605 XS8 1 XS8 2 Female receptacle 605608 Plug and jacks TC of the company AMP catalogue D E 10 A 03 93 XS2 3 Female receptacle 0 0282189 1 1 Black two pin XS2 4 Female receptacle 0 0282189 4 1 Green two pin XS2 5 Female receptacle 0 0282189 7 1 Yellow two pin 56 Operating manual MTZ 920 4 952 4 urojs s OUND QLd pu TC XL IW JO ured8erp III IPAH J g ons x SCH SE SCSX LV Old iH e 7ZSX CV egutJo xyov q Oh ALI h PJO ch U9913 A213 CH 4313 7 uid d SULI O UMOIG hy MO ZA pal KY Pol Y UI EC U2I13 MO P x oA YK pe q anq hI nq SIO OI MIM e 91 Old E E ko Get SVS H Do 2T dal Sees SI ES N m NA Y L85X CVS LVS hy N sah ON X J IYS EVS COA 9 eo 7114 10C11 ED 4011 LOA e o1 Tq ZZdX gt S EZSX ii ZZSX Las NAg Gu TAX 1 ZdX V V YL LI LLY 7SX LZSX INE Du GEN 44UJN 2U10Uu2 AIYU AC p4voquspp WO Een Deeg Zeen 3 LdX poued jonuos QLd pue TA
61. th without ballast weights with 4060 50 lift linkage in transport position c length over external diameters of 3850 50 wheels d width over the ends of rear wheel semi axles 19704 50 e cab height 2850 50 23 Tires basic configuration Front 360 70R24 Rear 18 4R34 24 Steering a steering wheel turning effort when feeding pump is operating not more than 30 b number of steering wheel revolu tions ensuring complete angle of guide wheel turning at least 6 c steering wheel backlash free play when feeding pump is operating at least 295 d steering wheel adjustment range 1 adjustment for tilt angle to the hori zon with four position fixation 25 40 2 height adjustment along the steering shaft axis mm 100 20 steplessly 25 Electrical system a operating supply voltage of onboard network V 12 b rated starting voltage V 24 26 Working equipment a rear PTO 1 PTO shank speed with separate drive rpm I speed 540 I speed 1000 MTZ 920 4 952 4 Operating manual End of Table 1 Parameter characteristic designation 2 PTO shank speed with synchronous drive rev per meter of travel b rear lift linkage 1 lifting capacity of rear lift linkage on suspension axle at least kg 2 pump volume feed at rated engine crankshaft speed at least l min 3 hydraulic system pressure relief cracking pressure MPa 4 conditional volume factor of hy draulic system efficiency factor at least 5 lifting
62. ting in oil bath wet brakes are designed and installed on tractors MTZ 920 4 952 4 The rear axle differential lock clutch is mounted in the brake housing both within the same oil bath thus the clutch is also designed as wet Figure 2 5 presents the design of wet brakes and rear axle differential lock clutch body housing 2 friction disk 3 spacing disk 4 pedal shaft 5 sealing hood 6 pressure plate 7 ball 8 park brake 9 cover 10 gasket 11 park brake shaft 12 drain plug 13 brake housing 14 gasket 15 O ring 16 axle drive gear 17 lock clutch 18 hub 20 cover 21 adapter 22 check filler plug 23 sealing hood 24 O ring 25 adjusting bolt Figure 2 5 Design of wet brakes and rear axle differential lock clutch 20 MTZ 920 4 952 4 Operating manual 2 3 2 Wet service and park brakes wet brakes control The service brake is eight disk The friction disks 2 Figure 2 5 are installed on the splined ends of the rear axle drive gears 16 The pressure plates 6 are by design similar to ones used in dry brakes but have a reduced angle of gradient of holes for balls to provide the necessary compressive force of friction and intermediate disks packs NOTE PRESSURE PLATES OF DRY AND WET BRAKES HAVE THE SAME OVERALL AND MOUNTING DIMENSIONS BUT ARE NOT INTERCHANGEABLE IT IS STRICTLY FORBIDDEN TO INSTALL DRY BRAKE PLATES T
63. tional front working headlights are installed on the brackets of front lamps MTZ 920 4 952 4 Operating manual 1 2 2 Main parameters and characteristics 1 1 2 Main parameters and characteristics are specified in Table 1 Table 1 SC Value for tractor MTZ Parameter characteristic designation 9904 9594 1 Drawbar category according to 1 4 GOST 27021 2 Force exerted rating kN 14 3 Engine a Model D 245 43S3A D 245 5S3A b Type Turbocharged c Cylinder number and arrangement Four in line vertical d Displacement volume 1 4 75 e Power kW 1 rated 62 0 2 0 70 0 2 0 2 normal 58 7 2 0 66 7 2 0 f Crankshaft rated speed rpm 1800 1800 g Specific fuel consumption at no minal power g kWh 220 5 0 220 5 0 h Rated ratio of torque backup 25 1 Specific oil consumption for burn out measured according to 09e GOST 18509 g kWh j Peak torque Nm 411 464 4 PTO power at PTO mode 540 58 3 rpm at least kWh 5 Specific fuel consumption at PTO 248 power in PTO mode 540 rpm at least g kWh 6 Number of gears a forward 14 b reverse 4 7 Tractor design speed on basic con figuration tires at rated engine crankshaft speed km h a forward 1 minimum operating speed 2 65 2 maximum traveling speed 38 1 b reverse 1 minimum 5 58 2 maximum 12 57 MTZ 920 4 952 4 Operating manual Cont of Table 1 Parameter characteristic designation 8 Tractor weight kg Va
64. tioner with compressed air Direct air flow with the hood open perpendicularly to the condenser plane top down Straighten folded finning with a special comb or plastic wooden plate In case of severe clogging of the condenser rinse it with hot water under pressure of 0 15 to 0 2 MPa max and blow with compressed air Operation 3a Check clean drain pipes of condensate Blue drain pipes are to the right and left of the heat exchanger pipe under the ceiling panel Check and as necessary in order not to allow plugging clean the drain pipes A sign of a clean drain pipe is water dripping when the conditioner is working during hot weather Operation 4a Remove condensate from the tanks of the heat exchanger of the engine charge air cooler CAC To remove condensate from the tanks of the engine CAC heat exchanger proceed as fol lows unscrew two plugs 1 Figure 3 2 in the lower part of the charged ar cooler 2 let condensate drain screw the plugs 1 Figure 3 2 Removal of condensate from the tanks of the engine CAC heat exchanger Operation 5a Check and maintenance of the engine air cleaner Check condition of the paper filter elements PFE for presence of paper break and correct installation of the PFE To check the basic filter element BFE perform the following open the tractor hood mask to get access to the air cleaner pull the yellow latch 1 Figure 3 3 turn the cover 2 counterclockwise by 12 5 and re move
65. tment mode 1 234 5 1 button to call a presentation of the main indicator and browse through indicated parameters 2 button to call the four section indicator and browse through indicated parameters 3 button to call the graphic presentation indicator and browse through indicated parameters 4 button to call error failure list 5 button to enter exit the mode of brightness and contrast adjustment and PIN code 6 changeable presentation of button purpose 7 screen Figure 2 3 Information display 2 2 3 Call up changeable presentations and parameters to display Press the button 1 on the display Figure 2 3 to call the main image to the screen At that the upper left corner presents an engine speed scale the upper right angle presents a travel speed scale when no speed parameter available oil pressure in the engine lubrication system is shown the lower right angle presents the coolant temperature the lower left angle presents the current fuel consumption per hour Press the button 2 to call the four section parameter presentation on the display screen Af ter a first stroke of the button 2 four parameters in numeric form are shown on the screen in the upper left corner voltage directly on the connection terminals of the information dis play in the upper right corner coolant temperature in the lower left corner electric system voltage in the lower right corner oil pressure in
66. ver in axial direction e axis of the switch lever The horn can be actuated in any switch lever position 1 3 11 Climate system control Climate system control console 2 Figure 1 1 has switches 1 and 2 Figure 1 9 1 Air flow adjustment switch 2 Air conditioner and refrigerating capacity adjustment Figure 1 9 Climate system control console Climate system control rules in air conditioning and heating modes are presented in Section 2 5 Air conditioning and cab heating system Note Instead of a climate system a heater fan can be installed on your tractor Control and design of the fan heater is described in the operating manual 900 0000010 OM supplied with your tractor 1 3 12 Double lever gear box control 1 3 12 1 General information Gear box GB is mechanical step by step simultaneous and double range 7F 2R with double lever control gear and ranges shifting is executed by independent levers Together with synchronized accelerator doubling the number of gears GB allows to have 14 gears of forward movement and 14 gears of rear movement 21 MTZ 920 4 952 4 Operating manual 1 3 12 2 Shifting of ranges and gears in GB with double lever control 1 P Figure 1 10 Shifting of ranges and gears in GB with double lever control shifting of ranges and gears is carried out by independent levers according to diagrams shown in Figure 1 10 Chose the required speed of tractor movement as pe

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