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Driving Axle Service Manual

1. 28 3T LOADER DRIVING AXLE SERVICE MANUAL CHAPTER IV THE ASSEMBLY OF DRIVING AXLE 4 1 The Network Chart of Final Assembly l shell which is cleaned on the assembly jig Fix the driving axle Sleeve Rim Assembly 3 Bearing Internal Gear Round Nut ON O ring 7 Planet Gear OO Plug 9 10 Refuel Brake 11 12 Refuel 13 Main Drive rl Sun gear 16 14 Half Axle 15 Shield Ring 17 Locating Block End Cover 19 29 Steel Ball 18 LG938 driving f axle assembly 3T LOADER DRIVING AXLE SERVICE MANUAL Assembly Tools and Equipments General tool Specification Number Using Position corresponding to the serial number of network chart or assembly parts name Select different specification according to the size of the assembly bolts Select different specification according to the size of the assembly bolts Partial assemble the main driver assembly and install the input flange Lightly beat the parts with assembly magnitude of interference Clean every part Partial assemble the spiral bevel driving gear assembly Install the fixed pin of half axle gear gasket and the spiral bevel driving gear name Gas tri LB10 LB16A j nee LB20A M1 2
2. Outer diameter Mark tolerance Recommend 0 3T of common as T less than lower limit mating Common parts Replaced P Inner diameter of Mark tolerance Recommend 0 3T P common mating as T more than upper limit 56
3. 3 Disassemble end cover Loose off bolts connect the planetary carrier and cover by relevant tools Push end cover away from wheel side assembly with M10 pusher screw Disassemble end cover 4 Disassemble the limit block Take off the limit block and steel balls together with hands Relevant tools could be used when the parts are a little tight 15 3T LOADER DRIVING AXLE SERVICE MANUAL 5 Disassemble the steel balls Remove the locating point of steel balls with p oN A S tools and make them out 6 Disassemble shield ring Take out the shield ring from half axle ring groove by axis shield ting clip Before disassemble shield ring draw the half axle out certain distance along the shell first 4y Make sure that the pliers be clamped firmly to avoid it bouncing off to bring potential safety hazard 7 Disassemble the solar gear Take off the solar gear from half axle slightly by hands 8 Disassemble half axle Draw out the half axle from axle shell slightly by hands TP 4 WWW 16 3T LOADER DRIVING AXLE SERVICE MANUAL 9 Plug screw Loosen the plugs on the wheel side and the axle shell Unscrew it with hands carefully and avoid the oil splashing Prepare a clean vessel under it to get oil 10 Wheel side reducer Loose off the hub bolts with relevant tools first And then Push planetary carrier away from hub with M16 pusher screw Disassemble planetary wheel carrier assemb
4. ae a VU rl T 6 A IN 11 A2 F 7 a d r N Z a N SK na Ly F pas aa Y Mie eae GZ 10 g SOZ LAIN U Str Se WoS Ty A A O no S Fap v Y ay Q 4 13 When installing the heated bearings heat insulation gloves must be used in order not to be hurt 14 When using copper rods knock slightly to avoid debris splashing into the cavity of the components Also can use rubber hammer plastic hammer or in the method of press mounting 33 3T LOADER DRIVING AXLE SERVICE MANUAL 4 3 Assemble the driving axle 1 Axle shell Hang the cleaned axle shell on the special support Wring the plug with glue on the oil letting and fuel deliverer of the axle belly Driving axle shell an Tightening torque of plug 70 100Nm y 1545 oxygen weary type pipe thread sealant 2 Sleeve Turn over the axle shell to make the end surface of axle shell horizontal and upward then install the gear sleeve on the wheel side supporting shaft of axle shell assembly 3 Hub assembly Coat the lubricating oil on the wheel side supporting shaft of axle shell assembly then install the hub assembly on the supporting shafts at both ends of axle shell assembly as Lubricating oil 4 Bearing Heat the inner ring of rolling bearing 32220 to 50 80 C then install it on the wheel side supporting shaft 34 3T LOADER DRIVING AXLE SERVICE MANUAL 5 Internal gear Install the driving axle internal gear on the spline
5. 78 104 124 165 109 900 13 16 30 36 65 78 10 130 180 210 Screw Yi Grades 68 480 145 193 199 264 282 376 384512 488 650 10 9 900 280 330 380 450 540 650 740 880 940 1120 _ SRP a Haosa acan T o ao AOO T o 68 480 714 952 969 1293 1319 1759 1694 2259 1559 2079 88 640 952 1269 1293 1723 1759 2345 2259 3012 2923 3898 109 900 ee 1700 2000 2473 3298 2800 3350 4111 5481 1606 129 1080 2142 2181 2908 2968 3958 3812 5082 4933 6577 Remark In the process of assembling the tightening torque of the connection bolts could be referred to the above table When the tightening torques in chapter 4 are not the same as in this table just follow the torque in chapter 4 3T LOADER DRIVING AXLE SERVICE MANUAL CHAPTER CONSTRUCTION AND WORKING PRINCIPLE OF THE DRIVING AXLE 2 1 Outside Graphic 1 End cover 2 Wheel side reducer assembly 3 Brake clip assembly 4 Axle shell 5 Main transmission 6 Input flange 7 Oil draining plug 8 Wheel hub assembly 3T LOADER DRIVING AXLE SERVICE MANUAL 2 2 General Graphic 2180 Base parameters of driving axle Spiral Bevel Gear First order Deceleration Main Transmission Reduction Radio 6 167 Wheel side Reducer Reduction Radio 3 12 Gear Oil 3T LOADER DRIVING AXLE SERVICE MANUAL 2 3 The Internal Construction of Driving Axle Driving axle assembly is one of the m
6. 9 In the assembly of screws bolts and nuts pay attention to protecting the paint film coating and etc of the connected components as well as the end of screws and bolts and grooving of the screws Make sure there is no damage 10 Use proper tap when threaded holes need rethreading and make sure the axis of threaded hole is vertical with the surface of connectors 11 After being tightened the bolts and screws should sprout 2 3 pitches out of the end face of the nuts 32 3T LOADER DRIVING AXLE SERVICE MANUAL 12 When preload group of screws and bolts preload in order according to the figure of connected components and the distribution of bolts 12 1 In case of group of screws and bolts arranged in rectangle tighten them from the middle to both sides symmetrically The order is showed in Figure 1 12 2 In case of screws and bolts arranged in square or cycle tighten symmetrically The order 1s showed in Figure 2 12 3 If exist a locating pin tighten from the screws which are near the pin The order is showed in Figure 3 Yo NZ A A Pin A 1 Ea IV n a Se oe rS e SL ar 4 ay Na x t A l DA Sg e an Si N 4 y O A 1 N i F S N ant a AN Sa Th id al EA lt p g i 4 i SL ae P fs od M A ima TY eas 1A f FOI rh ane D a Pae p A A an ye WSF fe ES ry ae UDA PO on
7. This service manual which shows the structure principle and the maintenance technology of the driving axle will help the maintenance workers understand the disassemble and assemble method of driving axle more deeply and bring the maintenance workers solid technology basis of locating faults and maintaining correctly Main content of the Service Manual 1 Structure and working principle of the driving axle This chapter shows the structures and functions of each kind of part which establish the basis of assembling and disassembling driving axle Furthermore it also could be used as the reference of locating faults 2 Disassembling of the driving axle The steps how to disassembling the parts correctly and the points for attention in disassembling driving axle are shown in this chapter 3 Assembling of the driving axle The steps how to assembling the parts correctly and the points for attention in assembling driving axle are shown in this chapter 4 Standard of criterion of the driving axle for repairing and replacement of parts The identification methods and standards of criterion of vulnerable parts are formulated in this chapter Especially declaration This service manual narrates the LG938 Driving Axle as an example Other series Driving Axle are similar with it except some small differences in connection types and structures They will not be narrated again here and could be executed as the method described in this manual AT
8. at the end of supporting shaft 6 Round nut Install and fasten the round nut Beat the internal gear with copper rod slightly to assemble it in place 1 Hook the 22 5 hole with pull tensile dynamometer which is pulled along the tangential direction The reading is 24 56N If the reading is not between the 24 56N adjust the degree of tightness of the round nut according to the reading Repeat the above processes until the reading is 24 56N Finally coat 1262 thread lock fix sealant on the thread hole of internal gear from the second tooth to the fifth or sixth tooth form a liquid level on the 1 3 circle of screw then tighten the screw and fix the round nut 2 Before measuring the pressure rotate the hub forward and backward for more than five times fae es 1262 thread lock fix sealant s tm Tightening torque of screw 22 30Nm 7 Install the O shape sealing ring Install the O shape sealing ring on the planet gear assembly 33 3T LOADER DRIVING AXLE SERVICE MANUAL 8 Install the planet gear assembly Install the planet gear assembly and O shape sealing ring on the hub with the rim bolt washer and nut m Tightening torque 264 354Nm el The planet gear assembly 9 Install the plug Insert the plug with glue in the oil holes at both sides of wheel 1545 oxygen weary type pipe thread sealant im Tightening torque 70 100Nm 10 Refuel Load both about 1 5L SAE85W 90 G
9. hole 914 5 on the bearing sleeve with pull tensile dynamometer which is pulled along the tangential direction The reading is 5 35N If the reading is not between the 5 35N increase and reduce the thickness of adjusting gasket Repeat the above processes until the reading is 5 35N 3 2 1 Install the half shaft gear Install two fixed pins and half shaft gear gaskets in the left shell of in order an Warning Beat lightly when install the lt fixed pin to prevent exceeding the range et 1 5 0 1 measure with caliper while beating Install the half shaft gear 45 3T LOADER DRIVING AXLE SERVICE MANUAL It is necessary to coat lubricating oil when install half shaft gear gasket and half shaft gear The surface with oil groove of half shaft gear gasket combines with the back surface of semi axis gear Lubricating oil i 15201 _ 16 3 2 2 Install the half shaft gear Install two fixed pins half shaft gear gaskets and half shaft gears in the right shell of differential in order Warning Beat lightly when install the fixed pin to prevent exceeding the range 1 5 40 1 measure with the caliper while beating 3 2 3 Assemble the cross assembly Install the bevel gear smaller end is inward and bevel gear gasket on the four axis ends of cross Warning Coat lubricating oil when install bevel gear and bevel gear gasket Lubricating oil Qo N 46 3T L
10. locates on the middle of tooth depth along the direction of length deviate to smaller end slightly along the direction of tooth length The way to improve the preload of the differential bearing after adjusting the engagement clearance of spiral bevel gear guarantee the clearance between the tapered roller bearing at both ends of differential to zero The method of 51 3T LOADER DRIVING AXLE SERVICE MANUAL adjusting is in the following table Adjustment of contacting area and clearance when install the spiral bevel gear Tooth flank contacting area of Way to adjust The moving direction of gear driven bevel gear Move the driven gear to the driving gear if the clearance is too small move the driving gear outward Move the driven gear away from the driving gear if the clearance is too big move the Se _ B Bi Move the driving gear to the driven gear if the clearance is too small move the driven gear outward Move the driving gear away from the driven gear if the clearance is too big move the driven gear inward The way to adjust the engagement generally is to increasing or decreasing the adjusting gaskets and turning the adjusting nuts The adjustment of contacting area affects the service performance and service life greatly which should be carried out seriously X Warning After adjusting completely clean up the red lead powder 3 3 6 Install the locking plate Tighten the fixing bolt of bearing seat t
11. 0P Sroup S 13 16 17 18 21 a 24 27 30 34 41 50 STOYP Dial Indicator 0 01 0 10 s Please use another Cleaning Please use another Machine method without it race Please use another method without it Depr Nein 0 02 0 200 Caliper Inter hexagonal wrench 0 140Nm Wrest wrench 0 350Nm i 0 800Nm the size of the assembly bolts instrument Pull tensile 0 300 0 100N EER 6 partial assemble the spiral bevel dynamometer driving gear assembly Special Tools Using Position corresponding to the P Specification Number serial number of network chart or Name assembly parts name Driving axle Prepare assembly eee support yourself l a without it Circlip Plier for one for l l round nut mounting sleeve mounting sleeve 4 2 Assembly specification and points for attention of axle l l l l l l Select different specification according to group 4 2 1 Classification and tightening method of axle screw fastener According to the analysis of the request of assembly performance assembly process and assembly operation and assembly quality of axle serial product as well as factors such as prevention for oil leakage and the importance of quality characteristic in 3T LOADER DRIVING AXLE SERVICE MANUAL assembling the box classify the axle screw fastener into three grades A B C Table for axle screw fastener of grade A End cover bolts at the side of wheel Connecting bolts and nuts on left and ri
12. L 5 gear oil GB13895 1992 in two wheel side reducers Base on the overflow of planet gear SAE85W 90 GL 5 gear oil 11 Install the brake Install the disk brake on the braking clamp support and then fix it with bolt and washer oa Tightening torque 370 470Nm Brake k Warning When installing the bolt coat proper amount of 1262 screw lock fix sealant on length of 20mm along the end of screw 36 3T LOADER DRIVING AXLE SERVICE MANUAL 12 Refuel Load 10L SAE85W 90 GL 5 gear oil GB13895 1992 in the axle packet of axle Shell SAE85W 90 GL 5 gear oil 13 Install the main driver assembly 13 1 Coat 1596 silicone rubber surface sealant on the joint surface between axle shell and the bracket Coat the sealant to form 3 6 circumference closed ring in the internal side of thread hole at the bigger end surface of axle shell and coat this sealant on the thread hole circumference at both sides of R50 arc Don t place the coating sealant in the air for more than 10 minutes 1596 silicone rubber surface sealant 13 2 Install the main driver Hoist the main driver assembly with joist barrow Drop the main driver in the main driver shell of axle and then install the locating pin ma Main driver assembly 3l 3T LOADER DRIVING AXLE SERVICE MANUAL 13 3 Install the bolt Coat proper amount of 1262 screw lock fix sealant on the bolt and the position of coating sealant is the l
13. OADER DRIVING AXLE SERVICE MANUAL 3 2 4 Install the differential shell Install cross assembly in the right shell of differential and let bevel gear mesh with the half shaft gear Turnover the differential left shell assembly and install it with the differential right shell assembly then joint the left and right shell of differential with bolt and tighten with washer and nut a tom Tightening torque of nut 180 210Nm x Warning 1 Make sure the assembly mark on the right shell of the differential mechanism aligns to the left shell of the differential mechanism 2 Coat proper amount of 1262 screw lock fix sealant on length of 10mm along the screw bottom of bolt a 1262 screw lock fix sealant 3 After assembling the half shaft gear and bevel gear can rotate by hand flexibly and have no jam 3 2 5 Install the spiral bevel driven gear Align the assembly mark fasten the spiral bevel driven gear rear axle is left lateral and front axle is right lateral on the right shell of differential mechanism with bolt washer and nut then tighten the nut m Tightening torque of nut 3054 25Nm 1 Coat certain 1262 screw locking sealant on the bolt And the length is about 12mm from screw bottom of bolt 1262 screw lock fix sealant 2 The judgment method of left and right lateral Face to the front of gear the helical teeth extend from smaller end to bigger end according to clockwise named right lateral conversel
14. Planet gear l Gasket NINI 2 Install the planet gear frame assembly Planet U oy gear axis o a Rolling needle Steel bal Shield ring l Planet gear frame 2 1 Glue needle rollers 28 for each on the internal holes wall of planet gear with lubricating grease Install shield ring on both ends of needle roller and install gaskets on both ends of planet gear hole Finally install the whole in the seat hole of planet gear frame 41 3T LOADER DRIVING AXLE SERVICE MANUAL 2 2 Install steel ball which aligns to the semicircular cavity of planet gear frame in the hole of planet gear axis Then install them and planet gear axis passing through the inner hole of planet gear and gasket on the planet gear frame After assembling completely the planet gear should rotate flexibly and has no jamming phenomenon 42 3T LOADER DRIVING AXLE SERVICE MANUAL 3 Install the main drive assembly Input Flange Washer Sealing Cover O ring shield ring Nut Oil Seal Gasket ALY VA Ta Bolt Washer w N Spiral Bevel TRS AY Active Gear at an pica N Locking plate Assembly N way PSEA Bolt Nut a ee ea a Adjusting Gasket N h N ik N TX Sleeve X Bracket RIN j PA 4 RS 1 Adjusting Nut m ms mt Bearing Seat Locking Plate Bolt Washer Bolt Washer Differential Assembly 3 1 1 Press the external ring of rolling bearing 3 in the seat hole at the big end of bearing sle
15. Service Manual 3T WHEEL LOADER DRIVING AXLE Applicable Scope LG938 LG936 LG933 Series Wheel Loader Driving Axle SHANDONG LINGONG CONSTRUCTION MACHINERY CO LTD 3T LOADER DRIVING AXLE SERVICE MANUAL Driving Axle Service Manual 2008 9 Version 2008 9 Printed 1 SHANDONG LINGONG CONSTRUCTION MACHINERY CO LTD Address Lingong Industry Park Linyi Economic Development Zone Shandong china Tel 86 539 8785597 Fax 86 539 8785618 Email service sdlg cn Website http www sdlg cn 3T LOADER DRIVING AXLE SERVICE MANUAL Service Manual Concise Guide All reasonable steps have been taken to ensure that this publication is correct and complete but should any user be in doubt about any detail clarification may be sought from Shandong Lingong construction machinery Co Ltd or their accredited representative The information in this document is subject to change without notice and should not be construed as commitment by Shandong Lingong construction machinery Co Ltd Shandong Lingong construction machinery Co Ltd accepts no responsibility for any errors that may appear in this document Shandong Lingong construction machinery Co Ltd P R China All rights reserved The contents of this publication may not be reproduced in any form or communicated to a third part without prior written permission of Shandong Lingong construction machinery Co Ltd M 3T LOADER DRIVING AXLE SERVICE MANUAL PREFRACE
16. TENTION Forgiving without further notice about the specification s changing of the parts in this manual which are caused by the complete appliance development The latest information could be get from Shandong Lingong Construction Machinery CD LTD 3T LOADER DRIVING AXLE SERVICE MANUAL Table of Contents CAPRERA T ORDU Ee ten tae teers Oe Ue rR E See l biS aC ons deri ONS eene A AA l k Oiled Coant Matrali osci eee ee Bone leee tie Boye lables Madea el leans 3 kS MATKE Canmore EE nnn err ny Meee Teese ner Merete Meee et reer ert em a ree 4 TA FA OMS UM Oe Te pana O teases tase te seen ciate tn lacsenede E E EAEE 4 kS Table or Common Screw Tighten Torque eseria A E tuted lee 6 CHAPTER I CONSTRUCTION AND WORKING PRINCIPLE OF THE DRIVING AXLE 7 2 Outside Graphi Cercerai e EEEE EEE E es eben de A E E E E E eteneee 7 POE eneral G65 8 a CREO ERE SE e e aa er eer ene 8 2 3 The Internal Construction of Driving Axle s iascwasasesendavioncwaradeaswibanesheddietsecdecebbeedsdetsncdededbeededetsmouteads 9 2A Workme Principle Of the DIVNE A E e aA ols isle ca taabites tizsiesetaetidea estes oes 10 CHAPTER II DISASSEMBLY OF DRIVING AXLE cccccccccccccsseccessseeceesseecessseeceeesseeceesseeseessaeeeeees 13 3 1 Transmission Net Graphic corresponding to disassembly of driving axle ccccccccccccceeeeeeees 13 3 2 Disassemibiy ol transmisso keraren o a a o a N Adee teasdeetim Mees a ana a 15 33 Disassem ite or as
17. Warning Fasten every bolt on principle of symmetric and cross Tightening torque 45 5Nm kgm aN 1262 screw lock fix sealant 39 3T LOADER DRIVING AXLE SERVICE MANUAL 4 4 Partial assemble the assembly 1 Install the hub assembly Hub i i Rolling bearn Bolt washer Rolling bearing i _ skeleton oil seal End cover of the oil seal a 7 i ee Brake disk p b I gt Gasket Bol washer 1 1 Put the hub with bigger end upward and install the external ring of bearing 32220 Then turnover let the smaller end upward and install the external ring of bearing 32021 and then install the internal ring of bearing 32021 1 2 Coat lubricating oil on the end cover of oil seal and check the integrality of oil seal Then coat lubricating oil in the groove of skeleton oil seal uniformly and then install the skeleton oil seal in the end cover of oil seal 40 3T LOADER DRIVING AXLE SERVICE MANUAL 1 3 Install gasket on the smaller end surface of hub then install the end cover of oil seal on the smaller end of hub and tighten with bolt M8 45 and washer oa Tightening torque 22 25Nm x Warning Fasten every bolt on principle of symmetric and cross 1 4 Install brake disc on the hub then tighten with bolt M8 1 5 50 and washer wm Tightening torque 200 250Nm t ma Brake disc Warning Fasten every bolt on principle of symmetric and cross
18. alant 3 3 5 Adjust the spiral bevel gear Engagement status adjustment of spiral bevel gear is to adjust the area of engagement and engagement clearance When adjusting the engagement clearance of spiral bevel gear press the contacts of percent meter on the bigger end edge of driven spiral bevel gear then turn the driven spiral bevel gear to measure the clearance directly The clearance should be 0 1 0 35mm The way to adjust engagement clearance is turn the adjusting nuts to change the position of driven spiral bevel gear move the driving spiral bevel gear assembly for adjustment if necessary If the clearance is greater than the regular value move the driven spiral bevel gear to the active spiral bevel gear Otherwise far away To keep the pretightening of differential tapered roller bearing which has been adjusted the number of inserting the adjusting nuts on one end should be equal to the cycle number of wringing adjusting nuts out on the other end When adjusting the contacting area of spiral bevel gear engagement pair firstly coat red pigment red lead powder and etc on the teeth of driven spiral bevel gear 3 teeth should be coated generally then turn the driven spiral bevel gear reciprocating by hand and check the touching imprint The right position of the spiral bevel gear imprint is no less than 50 along the direction of tooth depth and tooth length the imprint of spiral bevel gear is near to the centre and
19. ant sediment on the component must be cleaned out There must be no corrosion scratch or damage on the mating surface and friction surface The oil holes and groove should be clean and unobstructed 2 During assembling do not damage the thread on the screws 3 The end face of screw and nut should be in uniform contact with the fastened parts neither inclination nor hammering the faces into contact is allowed No bending deformation occurs to the screws 4 The connected parts should be under uniform compression closely jointed and connected firmly 5 It is forbidden to use inappropriate wrench or sleeve when tightening the screws and nuts 6 Assemble strictly with the fastener of right grade according to the above regulation It s not allow to use low performance fastener instead of high performance ones or use high performance fastener instead of low performance ones in principle 7 Coat proper amount of sealant for locking screws on the external thread of screw fastener cycle by cycle Don t coat onto the first two pitches of the thread and the width of sealant coated would be 3 to 5 pitches then screw into internal thread to the regular moment When the internal hole is a blind hole coat proper amount of sealant onto the bottom and then tighten 8 In the assembly of screws and bolts insert them for more than 2 3 pitches then preload with tools and finally tighten to regular moment with proper specification torque wrench
20. d the right shell of differential mechanism and disassemble the driven spiral bevel gear Before take down driven spiral bevel gear check or mark the assembly label first to reinstall the part to initial position 3 Dismount the bearings on the left and right shells of differential mechanism 4 Loose off the nuts connect left and right shells and separate the left and right shells of differential mechanism Before separate left and right shells check or mark the assembly label first to reinstall the part to initial position 5 Take down half axle gear gasket and half __ axle gear 26 3T LOADER DRIVING AXLE SERVICE MANUAL 6 Take down the cross and differential gear together then take down the differential gear gasket and differential gear from the cross 7 Take down the axle shaft gear gasket and axle shaft gear 3 3 5 Disassemble the spiral bevel driving gear assembly l Put the spiral bevel driving gear assembly on the proper worktable and put up the flange of bearing sleeve and then exert pressure on the thread end of spiral bevel driving gear During exerting pressure the pressure should not be so high to prevent destroying the flange If so the spiral bevel driving gear will be pulled off by the bearing sleeve 2 Remove the bearing 27 3T LOADER DRIVING AXLE SERVICE MANUAL 3 Remove the bearing sleeve 4 Remove the adjusted gasket 5 Remove the sleeve
21. e crack wear 54 3T LOADER DRIVING AXLE SERVICE MANUAL elliptic collision or fatigue delamination on the meting surface or spigot 9 Never further use the gaskets for planet gears and bevel gears which have serious wear crack and collision or fatigue delamination 10 Never further use pins with serious wear collision or crack 11 Never further use the parts in the following conditions wheel side supporting shafts half shafts and flanges have collision serious wear and crack on the spline or teeth the working surfaces of oil seal and bearing for assembling have crack 12 Never further use the parts with large bending moment such as axle shell supporting shaft and half shaft which have crack or mini crack on the arc chamfer transition area of spline and the area nearby 55 3T LOADER DRIVING AXLE SERVICE MANUAL IV If it is hard to judge by watching or touching check by measuring The common easily wear parts are listed in the following table Unit mm Parts catego inate chee Judgment Standard Oversize ales Size Tolerance Allowable Limits Measurement l tolerance Bearings Outer diameter u About 0 0 02 0 04 tolerance Wear of tooth 12 of tooth thickness thickness of reference circle About 0 0 10 2i generally Replaced 2 0 for spiral bevel gear Bevel gear gasket 1 6 0 06 Replaced gasket Cross shaft o eyaincles 0 0 021 024 93 Replaced Bevel gear re ameter 0 117 0 065 025 17 Replaced
22. ear is connected with half axle by spline Internal gear ring is fixed on the wheel side supporting axis which on two ends of driving axle shell Planetary gears mesh with solar gear and internal gear ring The planetary gears are installed on the 11 3T LOADER DRIVING AXLE SERVICE MANUAL planetary gear carrier by steel balls and planetary gear axis Planetary gear carriers are fixed with hub as one system by the bolts So planetary gear carriers and hub rotate together For improving the meshing condition between solar gear and planetary gears and contributing the meshing load equally half axle is in condition of floating state but not fixed 4 Transmission principle of driving axle As shown in the graphic 2 1 the main internal structure of driving axle shown The left and right shells of the differential mechanism are connected by bolts The driven spiral bevel gear of the main transmission is fixed on the flange edge of the differential right shell Journals of the cross axis inlay in the holes which are formed by the relevant groove which on the joint face between left and right shells One planetary gear incases on the journal of cross axis without fixed Both of the gear and cross axis mesh with the two straight tooth conical half axle gears The journals of the two half axle gears install on the left and right base holes on the differential shell and connect with half axle by splines Half axle is solid shaft between differential mec
23. el Side Bearing Base ip aa gc ade K Lap died A Ea 0il Shel Supporting ded sea haf Driving y Foa l l Shaft Planetary spiral Bevel eH Whee Gear iH Carrier T Half al is a _Shaft ah o oe oes ed ie ee a aaa i pml ee Half Cai yo Shaft f Gear Te F oe G nn at i i i ae E T Planetary k E J E Steel db Air wail S Ball B A sas cting Release Cede i 7A Adjusting ORT te j pope Planetary Nut Pipe AA l E a T 2 ae ar Oil Seal oer Star E Brake Oi ee Shaft ross Planetary Half Driven Spiral Plate Seal ai Shaft Bevel Gear Axle Bevel Gear Inner ievel Gear Gear Graphic 2 1 3T LOADER DRIVING AXLE SERVICE MANUAL 2 4 Working Principle of the Driving Axle Driving axle assembly function of increasing torque reducing speed and differencing speed are realized by differential mechanism and wheel side reducer Working principle will be introduced as followed 1 Working principle of differential mechanism Motion Characteristic The symmetrical bevel gear differential mechanism used in driving axle assembly is a kind of planetary gear mechanism Planetary 1s composed with differential gear shell and cross shaft both of which are connected together At the same time differential gear Shell is driving part because it connects with driven spiral bevel gear We assume that the angle speeds of differential gear shell and two side half axle gears are o revolution per minute is no and w revolut
24. embly Hang transmission assembly off ms Main transmission assembly In the process of hanging main transmission assembly the hanging tool should be kept above the transmission assembly to avoid hurting internal parts in the process 3 3 Disassembling of assemblies 3 3 1 Disassemble planetary wheel carrier assembly l Put planetary carrier on working plate horizontally 2 Knock the planetary wheel carrier out with the copper bar 3 Take out the steel balls 19 3T LOADER DRIVING AXLE SERVICE MANUAL 4 Take down the planetary gears and gasket 5 Disassemble the shield ring first And then take down the noodle roller on the internal wall of planetary gears 3 3 2 Disassemble the hub assembly l Put hub assembly on working plate horizontally 2 Loose off the bolts connect brake plate and hub with relevant tool 20 3T LOADER DRIVING AXLE SERVICE MANUAL 3 Take down the brake plate 4 Loose off the bolts connect the oil seal end cover and the hub Take down oil seal end Cover 5 Take down gasket 6 Take down frame oil seal 21 3T LOADER DRIVING AXLE SERVICE MANUAL 7 Get the bearing out 3 3 3 Disassemble main transmission assembly l Fixed the main transmission face the input flange up on the carrier horizontally tool Take down input flange gasket O sharp ring and the shield ring 3 Loose off the bolts connect seal cover and bearin
25. ength of 15mm along the end of the screw Then fasten main driver assembly and axle shell assembly with bolt and washer Tightening torque 110 130Nm kgm aT 1262 screw lock fix sealant Warning Fasten every bolt on principle of symmetric and cross 14 Install the sun gear Install sun gear on the end with shield ring groove of the half shaft 15 Install the shield ring Install the shield ring with axial circlip plier A Make sure the circlip plier is clamped firmly during using to avoid bouncing off during assembling to form hidden danger 38 3T LOADER DRIVING AXLE SERVICE MANUAL 16 Install the half shaft assembly After installing sun gear on the half shaft install the half shaft assembly in the hub pay attention to assembling the half shaft spline and gear 17 Install the locating block Rivet the steel ball on locating block The steel ball can rotate flexibly after riveting 18 Install the steel ball Install the locating block which has been riveted steel ball on the end cover Ifthe locating block doesn t install to the desired position beat it lightly with proper tool until the steel ball can rotate flexibly 19 Install the end cover Install O ring on the end cover and coat 1262 screw lock fix sealant in the screw M10 30 in which install the washer The position of coating sealant is 15mm along the end of screw Then tighten the cover with the bolt and washer
26. eve Press the external ring of rolling bearing 2 in the hole at the small end of bearing sleeve 3 1 2 Install the rolling bearing 1 in the end journal of the spiral bevel active gear front axle is left lateral Ralline beans rasket and rear axle is right lateral with Beating sleeve ra mechanical press and then install the Toe v easy ae Anis Se Ze shield ring in order sleeve Fite S 3 1 3 Turnover press the internal Roling l l l bearing 2 ring of rolling bearing 2 in the other opiral bevel end of spiral bevel active gear with active gear mechanical press Rolling bearing 1 Shield ring 43 3T LOADER DRIVING AXLE SERVICE MANUAL Install the axis sleeve in order Install the gasket Then install the bearing sleeve Finally press the inner ring of rolling bearing 31310 44 3T LOADER DRIVING AXLE SERVICE MANUAL Warning When assemble the main reducer the tapered roller bearing should have certain assembly preloading degree that is to say after eliminating clearance between the bearings load certain pre tightening force in order to reduce axial displacement caused by the axial force produced during the transmission and increase the brace stiffness of the axis to assure the normal mesh of bevel gear pair However if too tight the tapered roller bearing s wear will speed up Load and keep the pressure P 5420kg on the inner ring at up end of rolling bearing 31310 then hook the
27. g sleeve and take the seal cover down 22 3T LOADER DRIVING AXLE SERVICE MANUAL 4 Take down frame oil seal from seal cover with specific tool 5 Take down the gasket by hands 6 Turn the main transmission 180 7 Disassemble locking iron wire disassembling process 23 3T LOADER DRIVING AXLE SERVICE MANUAL 8 Loose off the bolts fix locking plate and take down locking plate 9 Mark the part for reinstalling it to the original position 10 Loose off the bolts connect the bearing base and dismount the bearing base 11 Dismount adjusting nuts with hands 24 3T LOADER DRIVING AXLE SERVICE MANUAL 12 Knock down the locking plate of stop pushing bolt and dismount the nuts Take down locking plate and disassemble stop pushing bolt 13 Hang out the differential mechanism assembly 4 ft l A Differential mechanism assembly A Keep balance in the hanging progress to avoid bringing potential safety hazard 14 Separate driving spiral bevel gear assembly and bracket with copper bar Don t knock the spiral bevel gear assembly too abruptly to avoid it falling down to scratch parts or bring potential safety hazard 3 3 4 Disassemble the differential mechanism assembly 1 Put differential mechanism assembly on the working plate vertically and firmly 25 3T LOADER DRIVING AXLE SERVICE MANUAL 2 Loose off the nuts connect the driven 5 spiral bevel gear an
28. ght shell of the differential mechanism Bolts of sealing cover for main driver Bolts connecting bracket and axle housing End cover bolts connecting wheel side oil seal Table for axle screw fastener of grade B a Bolts for fastening flanges Bolts connecting bracket and bearing seat Table for axle screw fastener of grade C Bolts for bracket locking tablets Plug for the center of axle 3 Plog atboth sides ofwheet Plug at both sides of wheel Assembling methods of A grade screw fastener 1 1 1 Firstly screw the bolts for more than 2 3 pitches manually 1 1 2 Then preload with gas trigger of low velocity and small torque on the principle of symmetry and cross 1 1 3 Finally turn 30 at least with a proper torsion wrench to reach the median of regular moment 1 1 4 An intelligent tightening machine could instead of step 1 1 3 so long as the median of regular moment can be reached and the accuracy of the machine is ensured Principle for tightening B C grade screw fasteners 1 2 1 Firstly screw the bolts for more than 2 3 pitches manually 1 2 2 Secondly preload diagonally with gas trigger of same specification or one grade 31 3T LOADER DRIVING AXLE SERVICE MANUAL smaller specification 1 2 3 At last tighten the screw to reach the median of regular moment with gas trigger of appropriate specification 4 2 2 Points for attention in assembling the axle l Before assembling the scrap iron burrs oil contamin
29. hanism and wheel side reducer Its inside end connects with half axle fear by spline and its outside end connects with shield ring and solar gear of wheel side reducer by splines The left and right half axles of loader are full floating structure Two ends of half axle bear torque mainly because of the kind of structure For avoiding half axle motions along axis the end which connects with wheel side reducer solar gear 1s limited by steel balls The torque and speed are transmitted to half axle by differential mechanism And then they will be transmitted to wheel side reducer by half axle Solar gear connects with half axle by spline Internal gear ring is fixed on the two ends wheel side bearing shafts of driving axle shell by splines They are fixed The planetary gears which mesh with solar gear and internal gear ring are installed on the planetary carrier by steel balls and planetary gear axis Planetary carrier and hub are connected by hub bolts So planetary carrier and hub will rotate together Transmission way will be get from the above structure Transmission power Transmission shaft Input flange Driving spiral bevel gear Driven spiral bevel gear Left and right shells of differential mechanism Half axle gear Half axle Solar gear Planetary gears Planetary carrier Hub assembly Driving wheels 3T LOADER DRIVING AXLE SERVICE MANUAL CHAPTER III DISASSEMBLY OF DRIVING AXLE 3 1 Transmissi
30. he tightening torque is 450 550Nm Place the locking plate rightly then fix the locking plate on the bearing seat with locking plate fixed bolt and washer and tighten the locking plate fixed bolt Tightening torque 40 50Nm 450 550Nm kgm X Warning Coat proper amount of 1262 screw lock fix sealant on length of 5 10mm along screw end of locking plate fixed bolt lt N 1262 screw lock fix sealant 52 3T LOADER DRIVING AXLE SERVICE MANUAL 3 3 7 Install the stop push bolt Turnover the bracket press the copper sleeve in the end of the stop push bolt then screw them in the bracket let the copper sleeve contact with the back of driven spiral bevel gear in the differential assembly Then overturn 1 6 1 4 circle and tighten with nut and locking plate a 1567F sealant Fold bending one tooth of locking plate to avoid the nut s loosing Then tighten the fixed bolt of seal cover Tightening torque of bolt M14 55 124 165Nm M12 55 78 104Nm __ kgm Warning Tighten the fixed bolt of the seal cover should according to the principle of symmetric and cross successive 53 3T LOADER DRIVING AXLE SERVICE MANUAL CHAPTER V JUDGEMENT STANDARDS OF MAINTENANCE AND CHANGING PARTS IN SERVICE MANUL FOR DRIVING AXLE After disassembling identify the parts whether write off The basis for identifying is whether the parts are lose their function completely service performance and whether cou
31. int to the bracket with bolt and washer preload the bolt M14 55 and M12 55 Install the input flange 49 3T LOADER DRIVING AXLE SERVICE MANUAL Install the shield ring and O shape seal ring Coat sealant on one end surface of gasket and then install the gasket with coating surface downward rv N 609 sealant 5 Coating route p of washer Install the nut M33 1 5 and tighten Tightening torque of nut 320 400Nm kgm Warning Before installing the flange install the flange on the spline of spiral bevel active gear and measure the radial pulsation of flange to assure not more than 0 08 and make matching and assembling mark If more than 0 08 rotate the flange to a certain angle and install it then measure again until satisfy the requirement Otherwise replace the flange 2 Coat a glue line whose coarseness is 2 3 on the washer as close to external circular as possible according to the line showed in the graphic 3 3 4 Assemble the differential assembly Turnover the bracket install the differential assembly in the bracket lt 2 Differential assembly Install the bearing seat with washer and bolt the bolt is tight lightly then install the adjusting nut 50 3T LOADER DRIVING AXLE SERVICE MANUAL Warning 1 The two bearing seats could not be exchanged lock fix sealant on the length of 15 25mm along the screw end surface of bolts s lt N 1262 screw lock fix se
32. ion wrest wrenches to reach the torque demanded 16 When release the oil in the driving axle releasing screw should be loosen off slowly to avoid the oil blowout The oil drained out should be get with special vessel to prevent the environment pollution 3T LOADER DRIVING AXLE SERVICE MANUAL 1 2 Oil and Coating Materials Kinematic The similar foreign oil brands Be classified by the U A API GL S Viscosity Domestic oil brands 100 C mm s MOBIL CALTEX ESSO SHELL Mobilube 1 SHC synthetic oil Heavyduty motor MOBIL Auto gear oil Mls Spirax EP Auto oil HD80W 90 Gear oil GX Heavyduty o Purpose 85w 90 GL 5 20 40 C a 85W 90 HD90 GB13895 1992 MOBIL Auto gear oil Thuban EP HD85W 140 HD80W 90 10 50 C Domestic oil The similar foreign oil brands brands MOBIL CALTEX CASTROL ESSO SHELL 2 or 3 lithium MOBIL Marfak l MP Energrease l l grease grease multi Retinax A Alvania Beacon L GB7324 1994 XHP222 Purpose ap It s suitable to be used to seal the pipe thread of 1545 oxygen weary type l E E ee pe Hydraulic system and pneumatic system or be used on PIP the surface with little oil Sealant 1262 pipe thread fixed sealant It s used to fix and seal the M10 M20 screws and the ones be endured intense vibration and impact 1596 silicone rubber surface It s used to seal the joint face on the parts of reductor sealant water pump valve and gas engine ap It s suitable to be used t
33. ions per minute are n and n2 then the following equations will be right 2M0 1 2 2no n n2 These equations are the motion characteristic equations of symmetrical bevel gear differential mechanism with two same diameter half axle gears They show that the sum speed of left and right half axle gears is same as two times of the speed of differential gear shell but isn t relation with the speed of planetary gears So when the loader turns or drives on other condition roads the planetary gears can rotate on their own speed to make the wheels on two sides rotate in different speed but not slide The up equations show that 1 When one side half axle speed is zero the other speed is two times of the differential gear shell 2 In the condition that the speed of differential gear shell is zero when one side half axle is rotated by external power the other side will reverse rotate in the same speed 2 Working principle of differential mechanism Torque Distribution Assume The torque from main reducer to symmetrical bevel gear differential mechanism is Mo inside and outside of half axle torques which are distributed by the differential gear are M and M3 internal friction torque of differential gear is M M2 M1 Mo M2 M M The followed conclusions will be get from the equations When the torques from left and right half axle are different the difference value of them works on the planetary gears and overcome the internal friction
34. ld not be repaired Il There are two ways to identify the parts which are disassembled 1 watch amp touch 2 measure III Judge the parts which are disassembled by watching and touching firstly the part in the following condition must be replaced 1 Never further use the components which are seriously knocked have fracture and crack or lose function 2 Never further use the oil seals dust ring O ring and seal gasket which are disassembled because of leakage If use again low reliability and short service life will occur 3 Never further use the bolts nuts washers plug screws pipe joints which have the following condition serious corrosion the thread doesn t work well in tightening operation the thread 1s damaged worn out or slipping 4 Never further use the looseness proof wire which is disassembled form the connection of bolt 5 Never further use the bearings if they could not be turned by hand smoothly crack exists on each component the race way is seriously worn or the balls are broken 6 Never further use the gears and splines which have crack fatigue delamination collision or over worn on the teeth 7 Never further use the parts in the following conditions boxes or shells with crack shell bearing with crack wear elliptic or fatigue delamination in the installing holes and shell screw which does not work well in tightening operation 8 Never further use the bearing seats and oil seal seats which hav
35. ly 4y When pushing planetary carrier with pusher screw the carrier must be pushed carefully for avoiding too fast to fall it down bringing potential safety hazard 11 O shape ting Take off the O shape ring from planetary wheel carrier by hands 12 Disassemble round screws Loosen off the looseness proof bolts of the circle nut And then disassemble the circle nut with hands 17 3T LOADER DRIVING AXLE SERVICE MANUAL 13 Disassemble internal gear ring am Try H Sz N hh 5 s RF W Take off the internal gear ring y P i gt NNF a 5 a ta ri ael ao AN iia te 14 Disassemble rolling bearing Rock the hub assembly slowly Separate the internal ring of 32221 away from wheel side supporting and get off the internal ring 15 Disassemble hub assembly Take down the hub assembly from wheel side _ 4 support axis _s Hub assembly lt a In the process of hanging disassembling keep the axis of hub assembly and the axis of wheel side support axis being in the same line approximately to avoid hurting the oil sealing face and the internal parts 16 Disassemble the sleeve gasket Take down the sleeve gasket Remark Disassemble all the parts on the other side of driving axle in the same way 18 3T LOADER DRIVING AXLE SERVICE MANUAL 17 Disassemble main transmission assembly Loose off the bolts connecting the main transmission and axle shell ass
36. n one end of the hook the wire rope may drop from the hook and that may cause serious accident The biggest 3T LOADER DRIVING AXLE SERVICE MANUAL strength is in the middle of the hook As shown in graphic 1 1 2 One single wire rope is forbidden Make sure that two or more ropes are used in hoisting the heavy 100 88 79 71 41 Gr 1 1 A Hoisting with one wire rope may cause the heavy rotates and then the wire rope looses or the heavy slides from the fixed location which will cause serious accidence 3 The hoisting angle between wire rope and hook should not be oversize when hoist the extremely heavy loading When the hook hoists heavy loading with two or more ropes the bigger of angle between wire rope and hook is the heavier of each rope loads The graphic 1 2 shows the changes of allowed loading kg in different angles when hoisting with two ropes The limited vertical hoist loading of each rope is 1000 kg It can hoist 2000kg when two ropes in the vertical location But when the angle reaches to 120 the ropes can only hoist 1000kg Another hand the force of the ropes would be 4000kg when the angle reaches 150 although the loading is only 2000kg Load qauntity Eg Hanging angle qd Gr 1 2 3T LOADER DRIVING AXLE SERVICE MANUAL 1 5 Table of Common Screw Tighten Torque Screw Screw Nominal Diameter mm Grades ia m e a aa S e es fao j ro jora f es f sen f oaa 88 640 9 12 22530 45 59
37. o lubricate the fiction position Be OU Te tent ees 2 rolling bearing and sliding bearing of any kinds of 7324 1994 engineering machinery between 20 120 C It s used to clean the surface of metals and enhance the 1755 cleaning agent adhesion strength between repair agent pope thread fixed sealant and substrate Grease Cleaning agent 3T LOADER DRIVING AXLE SERVICE MANUAL 1 3 Marker To make this manual to be more useful these markers following are used to mark the important safety and quality Safety Take care in the operation OE chee Pay attention to the technical requirements and make sure the operations reach the requirements in operation Choose the appropriate spreader by the parts and their heavy And choose the right assembly way by the spreader s conditions in operation Tighten Pay more attention to the parts tighten torque in assembly torque operation The location where need to be coated with adhesive and grease A 7 E a Inject required volume of lubricating oil water or fuel oil E oe Outpour required volume of oil or water or 1 4 Hoisting Explanation 1 When it is not easy to assemble the parts from driving axle assembly check the following items Check that whether all of tightening bolts of the part have been assembled Check whether the parts being disassembled are hindered by some other parts 2 Wire Rope 1 Wire rope should be in the middle of the hook If be i
38. on Net Graphic corresponding to disassembly of driving axle Brake pliers assembly i End a A i fl Cyoer F i D ii Shield i y ring fi fi Fa r r f Fs of 7 ni rd a bof ig Halar l r ZeAr fie i ae ae Uff as F T Half Make bracket Ay a alae assembly to ileal _ up Fix fe driving axle assembly on it Be A aes Planetary 10 josh wane s assembly MA k x ae i Y 4 i 4 a w J Round ra i LO A mte p LG938 Driving dele Assembly Fluz Lacrew 1 a te a 4 EAr Sey wO ee i L pi 3 a YRolling d 4 y y bearing ps l L 4 5 w yi Hub 15 4 assembly YOy v A Sleeve 16 gasket i Main transmission assembly 1T 13 3T LOADER DRIVING AXLE SERVICE MANUAL Tools and Equipments of Disassembling Name of Specification Nuaiber Application position corresponding to net general tools graphic number or assembly name LB10 LB16A LB20A Choose different specification by size of Gas trigger M1 20P Screws S 13 16 17 18 21 24 Choose different specification by size of as 27 30 34 41 50 group screws Cosoerbar In the process of hanging flick the firm parts PP by it Flick bearings when disassembly them Hexagonal wrench Name of Specification Nowiber Application position corresponding to net special tools graphic number or assembly name Assembly Prepare assembly carrier of platform when no one l driving axle with t
39. ost important parts in transmission system The main function of driving axle are turning the rotation speed slower and increasing torque from transmission The axle brings differential speed function to the two side wheels Bearing load and transmitting power are also the functions of driving axle Driving axle of loader is made up of axle shell main transmission driver including differential mechanism half axis wheel side reducer and brake clip assemblies The parts with the function of reducing or differencing speed are main transmission driver and wheel side reducer Main transmission driver is made up of input flange oil seal cover bearing sleeve driving spiral bevel gear driven spiral bevel gear bracket differential mechanism planetary wheels cross shaft half axis gear left shell of differential mechanism right shell of differential mechanism gasket bearings adjusting shim stop pushing bolts and framework oil seal Wheel side reducer is made up of internal gear ring planetary wheel carrier planetary wheel solar wheel and shims The main internal structures are shown in Graphic 2 1 The power transmission between main transmission driver and wheel side reducer is realized by half axle The splines on the two end of half axle mesh with the half axle gears in differential mechanism and the solar gear in wheel side reducer and it connect the power between main transmission driver and wheel side reducer Frame Axle Whe
40. ransmission Shield ring pliers for axis Each with 1 Disassemble the shield ring hole A a special tools Replace it by common Screw pusher bolts according to size 3 10 17 of screw holes Explanation about Disassembling Part 1 Do not reuse the disassembled parts and replace them with the new 2 Magnitude of reference of part bearings are relatively large because they were assembled by heated and pressed assembling in factory which will bring injury to bearings The bearings whose faces are damaged in disassembling could be reused in condition of being repaired and achieving the standard Otherwise scrap the bearings 3 When the copper bar is used knock the parts as lightly as possible to avoid the debris splashing into the assembly Or you can choose rubber hammer plastic hammer or other press assembly method Preparative work 1 Clean the soil and fouling on the duplex transmission assembly completely 2 Prepare firmly driving axle assembling carrier 3T LOADER DRIVING AXLE SERVICE MANUAL 3 2 Disassembly of transmission 1 Place the driving axle assembly on carrier horizontally Make the main transmission assembly up a Driving Axle Assembly 2 Disassemble the brake clip assembly Use relevant tools Such as sleeve and open end wrench the following conditions are similar and won t be explain again Loose off the bolts connect the brake clip assembly and carrier Disassemble the brake clip assembly
41. rol gasoline and water base oil cleaner 7 Check the spreaders whether were broken before operate the cranes and other hoisting equipments The quantity of the spreader must be big enough For avoiding collisions between parts spreaders should been operated slowly and located in the correct region Make sure no one work under the part lifted 8 When two or more workers will work together the operation procedure abided by all of who should be made before work for avoiding the accidence caused by out of steps 9 All tools should be been familiar with and kept carefully 10 When align two holes the workers make sure their hands and figures are not in the holes Pay attention to whether the hands would be extruded when assemble parts with hands directly 11 The disassembled parts must be checked The parts which have poor properties should be changed and the standard of criterion could be found in chapter 5 Standard of criterion for repairing and replacing the parts of the driving axle 12 There should be no interference after assembling each part 13 Protection measures must be operated when the oil seal and seal ring across key seats screw holes and steps to protect the oil seal and seal ring 14 To protect screw fasteners all the tools must be suitable to the screw fasteners when assemble the parts 15 The gas trigger is forbidden when tighten the screws Tighten them with hands first and then tighten them with some specificat
42. semb ES ara o E A A ees 19 CHAPTER IV THE ASSEMBLY OF DRIVING AXLE ccccccccccccccceesseceecsseeceeessaeceeesseeceeeseeeeesseeeeens 29 4 1 Ihe Network Chart of Final Assembly sieer a a a A TE 29 4 2 Assembly specification and points for attention Of axle eeeeeessesessssssseesesssseeseesssesssssesaaas 30 A gt Assemble the divine axle waist le lated eatiaed eetias lace 34 4 4 Partialvassemble the assembly orior a seedcube su a a 40 CHAPTER V JUDGEMENT STANDARDS OF MAINTENANCE AND CHANGING PARTS IN SERVICE MANULFOR DRIVINGAX LE ons hasac aco uattaseatgetodead uathasedgceadsal ugtias otdecachdnay Sothenr ed costae atiomaeeads 54 3T LOADER DRIVING AXLE SERVICE MANUAL CHAPTER EXORDIUM 1 1 Safety Considerations Md important Safety Considerations It s very important to operate the loader safely in the process of maintenance and repairing The related technologies about how to assemble and disassemble the driving axle correctly are described in this manual The safety considerations marked with the security label should be pay more attention when operate it for avoiding hurting workers When coming across this kind of marker workers should operate carefully Workers should keep themselves safe first and take some necessary measures when the potential dangers coming Security Attentions In the process of assembling and disassembling unsafe factors and parts wear life losing properties failure would be caused by
43. the incorrect operation method Please read the contents carefully when the transmission s parts would be assembled or disassembled 1 The parameters graphs and contents in this manual are suitable to the standard configuration products Please consult our company and search data about the information of deformed products 2 In repair shop the region for assembling or disassembling and placing disassembled parts should be marked obviously Mark sure the tools and parts are placed in the right region The clean of operation region must be kept and make sure no oil or pollution in the operation region Fire extinguishing equipments are necessary and smoking is forbidden in the region except the smoking room 3 When welding operation is needed it should be done by expert workers who were trained by professional welding training Welding gloves baffles goggles hats and other work clothes suitable for welding are essential during welding operation 4 Before the driving axle assembly been disassembled the appearance of which must been cleared up to avoid the parts been polluted in the disassembling progress 5 Work clothes not coincide with requirements are forbidden In the progress of l 3T LOADER DRIVING AXLE SERVICE MANUAL operation safety shoes and safety helmets must been worn and the buttons must been attached Goggles should be worn when workers knock the parts with copper rod 6 The disassembled parts could be cleaned by pet
44. torque of 3T LOADER DRIVING AXLE SERVICE MANUAL differential gear to drive the planetary gears This makes the differential action 2 When the speeds of left and right half axle are different torques on them are different too Torque on the slower axle is bigger and that on the faster axle is smaller 3 The sum torque on two half axles is the same as the one on differential gear Because the friction torque of the popular symmetrical bevel gear differential mechanism is very small it could be thought the torque is distributed equally whether the speeds of left and right wheel are same This is the transmission characteristic the same torque but the different speed of common differential mechanism This characteristic 1s suitable for loader when works and drives on the general condition But in the wicked condition the passing capacity will be affected seriously 3 Working principle of the wheel side reducer Wheel side reducer is the last increasing torque and reducing speed mechanism It is a kind of planetary transmission mechanism It is made up of solar gear fixed gear ring driven planetary carrier and planetary gears Working principle is shown as Graphic 2 30 This graphic is not complete the same as the actual structure and here is just the principle introduction Graphic 2 30 Working principle of wheel side reducer 1 Internal gear ring 2 Planetary carrier 3 Half axle 4 Planetary gears 5 Wheel hub 6 Solar gear Solar g
45. y extend from smaller end to bigger end according to anticlockwise 47 3T LOADER DRIVING AXLE SERVICE MANUAL named left lateral 3 2 6 Install the bearing Install rolling bearing on the external end bearing of differential right shell Install rolling bearing on the external end bearing of differential left shell 3 3 1 Install the spiral bevel active gear Measure the size L as the graphic The recommended primary selecting thickness of adjusting gasket is the measured value subtracts 50 9 Fix the bracket on the assembly frame with the smaller end upward Coat sealant on the smaller end surface and install the adjusting gasket Coat sealant line with diameter 2 4mm fy Oil hole on the smaller end uniformly The coating _ ff Coating route route is showed in the graphic The coating route of bearing sleeve the other end of gasket also according to the above requirement 48 3T LOADER DRIVING AXLE SERVICE MANUAL Install the spiral bevel active gear assembly after assembling in the bracket 3 3 2 Assemble the seal cover Press the oil seal in the seal cover x Warning Coat proper lubricating oil on the external diameter when install the oil seal Lubricating oil 3 3 3 Install the input flange Put the gasket on the end surface of bracket then install the seal cover assembly coat lubricating grease according to the general requirement of driving axle and jo

Driving Axle Service Manual

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