Land Pride BH3512 User's Manual
Contents
1. aN Rear Front or Tractor Suction Filter Qa tant i Press PEON Tank A oT B Pump Jm Return Outlet O oe Quick Coupler Return Port Female RR L A ao Backhoe Tractor 4 gt Valve Return Hose a cy R OO Tractor Loader Valve was gt Quick Coupler Power Beyond Port map lt 19548 Inlet of Valve Backhoe Independent Hydraulic Systems Figure 1 4 Testing Procedure for Hydraulic Circuits Identification of terminology 1 PSI Pounds per square inch Represents Power 2 GPM Gallons per minute Represents Speed A glycerin filled hydraulic pressure gauge located on the right hand side of the valve is factory installed on your Land Pride Backhoe for your convenience in testing and diagnosing any problem that may arise in the backhoe hydraulic system The gauge indicates only PSI but with proper use one can diagnose almost any hydraulic problem in a backhoe s hydraulic system The first thing to remember is the backhoe hydraulic valve is made of six individual valves each doing a single function The only thing that is common to the valve bank is the hydraulic valve and the master relief valve Testing Open Center System Check the pump and master relief If a problem exists on all hydraulic circuits the pump or master relief usually cause2. ELECTROCUTION UTLITY HAZARD UNDER ROND OR OVERFEAD UTLITIes To prevent serious injury or death Do not dig where there are underground wires 838 379C Check with local authorities before digging Danger Overhead asia Underground Utilities 4 BH3512 Backhoes 340 131M 7 14 08 Table of Contents Land Pride Important Safety Information Warning High Pressure 818 339C f f f a DRS g LTE LIS 933C 839 Warning General 932C Caution Watch your step 839 ING ON OFF MACH I I WATCH YOUR STEP WHEN GE OR NE 5 BH3512 Backhoes 340 131M 7 14 08 Table of Contents Introduction Land Pride welcomes you to the growing family of new product owners This Backhoe has been designed with care and built by skilled workers using quality materials Proper assembly maintenance and safe operating practices will help you get years of satisfactory use from the machine Application The BH3512 Backhoe is the ideal tool for farms drainage ditches nurseries golf courses utilities and cemeteries An unobstructed view of the work area comfortable positioning of the controls and walk through platform allow for hours of fatigue free work Stabilizer legs provide a stance of 10 7 assuring more stability and safer operational control Optional rubber shoe
3. 21 Lubrication ia ee eee 22 Bucket Pivot 0020020000ee 22 Bucket Cylinder Base End 22 Dipper Stick Pivots 05 22 Boom Cylinder Rod End 23 Boom PIVOt aedade ew eee 23 Boom Cylinder Base End 23 Stabilizer ArMS 0 0 0 cee 24 Boom Swing Cylinder Rod End 24 Boom Swing Cylinder Base End 24 Section 4 Specifications amp Capacities 25 Section 5 Features and Benefits 26 Section 6 Troubleshooting 27 Section 7 Appendix 29 Torque Values Chart 000 0c eee 29 NOIES mora cacactaec a a a 30 Warranty 0 0 cee 31 Land Pride provides this publication as is without warranty of any kind either expressed or implied While every precaution has been taken in the preparation of this manual Land Pride assumes no responsibility for errors or omissions Neither is any liability assumed for damages resulting from the use of the information contained herein Land Pride reserves the right to revise and improve its products as it sees fit This publication describes the state of this product at the time of its publication and may not reflect the product in the future Land Pride is a registered trademark All other brands and product names are trademarks or registered trademarks of their respective holders Printed in the United States of America BH3512 Backhoes 340 131M
4. 7 14 08 Land Pride Important Safety Information Table of Contents These are common practices that may or may not be applicable to the products described in this manual Safety at All Times Thoroughly read and understand the instructions given in this manual before operation Refer to the Safety Label section read all instructions noted on them Do not allow anyone to operate this equipment who has not fully read and comprehended this manual and who has not been properly trained in the safe operation of the equipment A Operator should be familiar with all functions of the unit A Operate implement from the driver s seat only A Make sure all guards and shields are in place and secured before operating the implement A Do not leave tractor or implement unattended with engine running A Dismounting from a moving tractor could cause serious injury or death A Do not stand between the tractor and implement during hitching A Keep hands feet and clothing away from power driven parts A Wear snug fitting clothing to avoid entanglement with moving parts A Watch out for wires trees etc when raising implement Make sure all persons are clear of working area A Turning tractor too tight may cause implement to ride up on wheels This could result in injury or equipment damage equipment Be Aware of Signal Words A Signal word designates a degree or level of hazard serious
5. and remove the key A Detach and store implements in a area where children normally do not play Secure implement by using blocks and supports 7 14 08 BH3512 Backhoes 340 131M 1 Important Safety Information Table of Contents Land Pride These are common practices that may or may not be applicable to the products described in this manual Use Safety Lights and Devices A Slow moving tractors self propelled equipment and towed implements can create a hazard when driven on public roads They are difficult to see especially at night A Flashing warning lights and turn signals are recommended whenever driving on public roads _ wala ONYT _ _ i Le ZININN ZINN Transport Machinery Safely A Comply with state and local laws A Maximum transport speed for implement is 20 mph DO NOT EXCEED Never travel at a speed which does not allow adequate control of steering and stopping Some rough terrain require a slower speed A Sudden braking can cause a towed load to swerve and upset Reduce speed if towed load is not equipped with brakes A Use the following maximum speed tow load weight ratios as a guideline Q Yi avil 20 mph when weight is less than or equal to the weight of tractor 10 mph when weight is double the weight of tractor IMPORTANT Do not tow a load that is more than double the weight of tractor Transporting the Loade
6. operate and transport the backhoe away from your work area 7 When traveling on highways and roads be sure the 25 Keep your work area clear of obstacles at all times boom and stabilizers are in the fully raised position and transport lock is in the transport lock position 26 oe should never be permitted to operate the 8 When traveling on a road with your backhoe use proper safety lights and warning sign Check local 27 Do not attempt any repairs maintenance or regulations adjustments of your backhoe while it is in operation Always turn off your tractor before making repairs or 9 When traveling with your backhoe do not make adjustments or performing maintenance procedures sudden starts stops or turn at high speeds Do not exceed safe speed limits on rough ground Do not 28 When the use of hand tools is required to perform make sudden starts when climbing grades any part of assembly installation removal or adjustment of the backhoe be sure that the tools are 10 Always wear protective headgear while operating designed and recommended by the tool backhoe manufacturer for the specific task in which they are 11 Be sure to lower the stabilizers to the ground before being used operating the backhoe 29 Keep all bolts and nuts tight Replace any damaged 12 Lookout for overhead low hanging wires Do not or worn parts such as hydraulic hoses and fittings touch wires with any part of the backhoe immediately Always use Land Pr
7. Assembly and Set Up Table of Contents 9 Attach the backhoe to the lower lift arms of the tractor using the pins that are attached to the pallet Refer to Figure 1 9 10 Remove the two 7 8 bolts in order to free the top link Refer to Figure 1 9 11 Mount the top link to the tractor There is no correct side up for the top link There are four different offset positions for the top link s vertical and horizontal adjustment to match backhoe frame depending on your tractor s 3 point 12 Mount the top link of the backhoe to the main frame of the backhoe To do this maneuver the backhoe until you can align two holes in the backhoe frame with a set of holes in the top link It is important to pick a set of holes that places the backhoe in a vertical position in relationship to the ground with a 10 to 12 ground clearance There are four possible positions 7 8 Bolts Mounting Top Link Figure 1 9 13 If you have to make adjustments make sure that the backhoe tilts towards the tractor rather than away If you cannot find a satisfactory set of holes turn the top link upside down and try again In some cases it may be necessary to drill additional holes in the top link or to shorten the top link 14 Once an appropriate set of holes is found secure the backhoe to the top link using the two 7 8 x 2 1 2 bolts and hardware that were removed in Step 20 Ay warnine Tractor roll bars and tractor cabs c
8. O Ring fittings a Insert the filter into the SUCTION PORT of the reservoir This is the port that is located on the left side of the reservoir 7 14 08 BH3512 Backhoes 340 131M 9 Table of Contents Section 1 Assembly and Set Up Land Pride b Attach the 1 2 street ell to the RETURN PORT on the reservoir This is the port located on the right side of the reservoir c Attach the reservoir to the backhoe as shown in the drawings that come with the pump kit d Bolt the torque bar to the flange mounting of the pump Use the bolts lock washers and nuts supplied e Connect all fittings as illustrated in the instruction with the PTO hydraulic pump kit for your backhoe A CAUTION Do not connect the pressure supply hose to return port of the backhoe valve This will destroy a hydraulic pump in seconds A CAUTION This power beyond circuit should be used only when powering your tractor and backhoe from a tractor internal system where you have relief valve protection of the pump If it is used on an external pump disconnection of any quick coupler with the engine running will result in almost certain pump damage Circuit When Backhoe is Removed A CAUTION The hydraulic valve can be damaged by 1 2 3 Reversing the flow of oil through the valve Hydraulic lines disconnected during transport Disconnecting the return line while the tractor is running A faulty quick coupler More than 12 GPM
9. Pride Solution Adjust RPM s Defective pump Check pressure or replace performance Load too heavy Check line pressure Faulty main relief valve Clean or replace main relief valve Internal valve crack Replace valve section Suction line filter plugged Oil too heavy for cold weather use Replace with lighter oil Power supply may not be plumbing Use a flow meter to check out whether 4 8 GPM flow rate enough oil is being achieved Low oil level Pressure line restricted Check for obstruction Collapsed suction line Check for damage Valve spool not at full stroke Check movement and linkage Backhoe does not hold Cylinder seals leaking Replace seals up load Valve spool leaking Replace seals Oil bypassing valve spool Replace valve bank Load drops when valve Dirt in load check valve Disassemble and clean spool moved from neutral Excess oil heat Damaged or worn pump Repair or replace Too fast of an engine speed Reduce throttle Main relief bypass valve improperly set Draft control lever not all the way down Check relief setting Position correctly Oil leakage Independent Hydraulic system pump failure Valve spool seals Loose hose fittings Broken oil line Improperly set relief valve Replace seals Tighten just enough to stop leakage Replace hose or line Set relief at 1400 PSI Independent Hydraulic system pump Noisy Suct
10. Safety Labels Your backhoe comes equipped with all safety labels in place They were designed to help you safely operate your implement Read and follow their directions 1 Keep all safety labels clean and legible 2 Replace all damaged or missing labels To order new labels go to your nearest Land Pride dealer 3 Some new equipment installed during repair requires safety labels to be affixed to the replaced component as specified by Land Pride When ordering new components make sure the correct safety labels are included in the request 4 Refer to this section for proper label placement To install new labels a Clean the area the label is to be placed b Spray soapy water on the surface where the label is to be placed c Peel backing from label Press firmly onto the surface Squeeze out air bubbles with the edge of a credit card AC AUTION To Avoid Injury or Machine Damage Transport lock s must be engaged During transport When maintenance is being performed 838 380C 838 380C Caution Lock For Transport ASW ARNING PINCH POINT OR CRUSHING HAZARD To prevent serious injury or death from pinching or crushing Stand clear from implement while Folding Raising Unfolding e Lowering 838 3 78 C Warning Pinch or Crush Hazard ADANGER HOR oo S Unumes
11. cylinder at end of stoke Next take another pressure reading at high speed If the pressure increases with speed it would indicate a faulty cylinder For other hydraulic problems refer to Troubleshooting Section Before calling your dealer fill in the Hydraulic Testing Chart below The chart below will enable the service man to diagnose nearly all hydraulic problems you may be having with your backhoe Be certain that the cylinder is at the end of the stroke when the readings are taken Hydraulic Testing Chart Cylinder Function PSI Idle Speed PSI Full Speed Stabilizer Up R H Stabilizer Down R H Stabilizer Up L H Stabilizer Down R H Dipper Stick In Dipper Stick Out Swing Left Swing Right Bucket Open Bucket Closed Boom Up Boom Down Reder to Figure 1 5 on Page 13 for Cylinder Locations 12 BH3512 Backhoes 340 131M 7 14 08 Land Pride Section 1 Assembly and Set Up Table of Contents Using Tractor Hydraulics All Tractors If you wish to use the tractor hydraulic system consult the dealer of your tractor for a safe and proper method of connecting the Land Pride BACKHOE to your tractor Using Tractor Hydraulics John Deere The return hose supplied with your Backhoe will not be long enough You will have to purchase a 1 2 return hose with a length suitable for the following procedure Purchase a Port Filter Cover JOHN DEERE Part number AT30197
12. front of you there are four control levers Right and Left are determined from a seated position in the operator s seat Refer to Description of Major Backhoe Parts Figure 1 5 on page 13 for the following controls Stabilizers To the outside of the operator s console are the controls for the stabilizers The left lever controls the left stabilizer and the right lever controls the right stabilizer To raise the stabilizers pull the levers towards yourself To lower the stabilizers push the levers forward away from yourself Boom The center lever on the left side of console controls the boom up and down Pulling the lever towards you raises the boom pushing the lever forward lowers the boom Pushing the lever further into detent float position renders the valve functions inoperable Moving this lever to the left swings the boom to the left moving the lever to the right swings the boom to the right Dipper Stick And Bucket The centered lever on the right side of console controls the dipper stick in and out and the bucket curl and uncurl Pulling lever towards yourself moves the dipper stick in pushing the lever forward moves the dipper stick out Moving this lever to the left curls the bucket moving the lever to the right uncurls the bucket Familiarize yourself with these controls before beginning to operate the backhoe After a little experience you will be able to operate the unit with a smooth steady moti
13. of oil flow while operating the backhoe By connecting the backhoe to a tractor valve and actuating the valve in the wrong direction causing a reverse flow through the backhoe valve IMPORTANT If removing backhoe from tractor quick coupler reconnections should be made with tractor engine off Pressure Line Power Beyond Outlet Inlet Valve of i item A wes Backhoe Valve Male Female Oil Reservoir Backhoe Loader or Tractor Sump Quick Coupler Return Hose From Backhoe Valve Power Beyond Independent Hydraulic Systems Quick Coupler a CN a X PAON Tank Va ae Loader or Backhoe Tractor Loader p Valve a O Return Hose From Tractor Valve To Sump aO Pump ENS Inlet Tee E f I Suction Hose To Pump Suction Filter Pressure Hose From The Pump 19388 Figure 1 3 10 BH3512 Backhoes 340 131M 7 14 08 Land Pride Section 1 Assembly and Set Up Table of Contents Pressure Line Inlet Valve of Quick Coupler Backhoe Valve aa s Circuit when Backhoe is removed is Female J o O 3 e ae Oil Reservoir a Backhoe or 4 iia Tractor Sump o ale 1 Female cO o
14. 0 from your dealer if filter cover is not already ported for an auxiliary return line Install it on your tractor NOTE Many newer John Deere tractors will already be equipped for this return hose porting through filter cover cap back to transmission sump Attach the backhoe s pressure hose to the tractor quick coupler Attach the backhoe s return hose to the port filter cover that you installed Move the control lever on Dipper Stick Cylinder Stabilizer Cylinder R H Bucket Cylinder Boom Description of Major Backhoe Parts the tractor so that it starts a flow to the backhoe valve and secure it in full open position The above procedure results in a direct connection to the JOHN DEERE master pump and eliminates a return into the rear transfer pump chamber The problem with returning oil into the rear transfer pump chamber is that if the tractor engine RPM is throttled down to a point at which the oil transfer pump cannot supply sufficient oil to the main system pump the main pump runs out of oil in its sump and starts chattering Mounting The Backhoe IMPORTANT Make sure that there is sufficient clearance for the operator if the backhoe is mounted to a tractor with a cab or is equipped with a ROPS The ROPS may need to be extended or flipped around to obtain sufficient clearance Description of Major Backhoe Parts Refer to Figure 1 5 1 Familiarize yourself with all of the term
15. 0 131M 7 14 08 Land Pride Introduction Table of Contents Backhoe Operation Maintenance amp Sa 1 fety Tips Your backhoe must be mounted only on a tractor equipped with a Category 1 or 2 hitch or Skid Steer Hitch Failure to do so may result in serious injury 19 20 Do not attempt to raise the tractor off the ground or move the tractor forward or backward using the boom or stabilizers When leaving the backhoe for any reason lower the bucket to the ground for safety 2 When servicing the backhoe make sure all moving 21 Never leave the backhoe unattended with tractor parts are on the ground engine running 3 To avoid injury from escaping pressurized hydraulic 22 To prevent injury during assembly installation fluid move the control levers in all directions before operation adjustment or removal of the backhoe it disconnecting any hoses steel lines or couplers is recommended that gloves safety glasses or face reas shield and safety toe shoes be worn 4 Keep footpads clean to prevent feet from slipping while mounting backhoe 23 Do not wear loose clothing while operating or working near the backhoe Keep hair and clothing 5 sa hio transport your backhoe with the bucket fully away from all moving parts of the backhoe _ 24 Only the operator should be near the backhoe during 6 Be sure your tractor has sufficient front end weight to operation Keep all others a minimum of fifty feet
16. 0__ 705__ 1510 1120 2100 1550 1060 1240 2320 1 1 8 12 785 1680 1710 1730 1270 2650 1950 3660 2700 Wes 7 1 1 4 12 1 3 8 6 1240 2730 2010 1470 3230 1 3 8 12 1670 3680 11 2 6 TARE 1330 980 2970 1950 4290 2190 4820 3560 Torque tolerance 0 15 of torquing values Unless otherwise specified use torque values listed above 1880 1380 2960 2190 4100 3220 1 in tpi nominal thread diameter in inches threads per in 2 N m newton meters 3 ft Ib foot pounds 4mm x pitch nominal thread diameter in millimeters x thread pitch 7 14 08 BH3512 Backhoes 340 131M 29 Table of Contents Land Pride Section 7 Appendix Notes 30 8H3512 Backhoes 340 131M 7 14 08 Land Pride Table of Contents Section 7 Appendix Warranty Land Pride warrants to the original purchaser that this Land Pride product will be free from defects in material and workmanship beginning on the date of purchase by the end user according to the following schedule when used as intended and under normal service and conditions for personal use Overall Unit One year Parts and Labor Hydraulic Cylinder One year Parts and Labor Hoses and Seals Considered wear items This Warranty is limited to the replacement of any defective part by Land Pride and the installation by the dealer of any such replacement part and does not cover common wear items such as blad
17. Backhoes BH3512 340 131M Operator s Manual n re serious follow ithout exception Your life and the lives o Copyright 2008 Printed 7 14 08 Cover photo may show optional i i structions an others depend on it y ead the Operator s manual entire en ou see is symbol e subsequen in i i i wi i Table of Contents Important Safety Information 1 Safety at All Times 00 cee eens 1 Look For The Safety Alert Symbol 1 Safety Labels wasseidorairoe enw ade de a a a 4 Introduction 2 staid cect cenatdeawnd ees 6 Application 0000 eee 6 Using This Manual 0 0 6 Terminology os saaa 6 DENMUONS 3 ii ect ae ah ae ed ee oe DS 6 Owner Assistance 00 cece eee eaae 6 Serial Number Plate 000005 6 Further Assistance 2 0005 6 Backhoe Operation Maintenance amp Safety Tips 7 Section 1 Assembly and Set Up 8 Tractor Requirements 005 8 Hydraulic System Requirements 8 Open Center System 00 cece eaee 8 Closed Center System 0000 ee aae 8 Power Beyond Closed Center Kit Part No 340 084A 0 0 0 0 8 Power Beyond Hydraulic System 9 Power Beyond eean Center Kit Part No 340 084A 204 9 Choose the neni HOSING akaaaaaaaanan cs 9 Independent P T O Hydraulic Pump System 4 9 Testing Procedure for Hydrau
18. actor ballast may need to be added to your tractor To determine whether or not to add the ballast refer to your tractor s operator manual Hydraulic System Requirements Ay CAUTION The backhoe valve must be compatible with the hydraulic system that will power it Make sure that if you are powering the backhoe with an open center hydraulic system the backhoe is set for open center operation If you are using a closed center hydraulic system the valve must be set for closed center operation If you are using a power beyond setup the valve must be converted for this use See the appropriate section of this manual on how to convert your valve If you do not know how your valve is currently setup check with your Land Pride dealer Your backhoe cylinders have been filled with oil at the factory The oil in the unit is compatible with most tractor manufacturers oil Do not move any control levers on the unit until after hydraulic connections to the tractor or the independent hydraulic system have been made The Land Pride Backhoe has been designed to be operated at a flow rate of 8 11 GPM Since many tractor systems exceed a flow rate specified for your backhoe the flow may have to be adjusted by throttling the engine RPM down to obtain an acceptable flow rate By adjusting the flow rate correctly you will prevent sudden shock loads on the cylinders pins hoses seals etc This results in a smooth operation and reduced main
19. an present a danger in the operation of a three point mounted backhoe We do not recommend the use of a three point backhoe in conjunction with either a roll bar and or a tractor cab Ay warnine Tractors with cabs must have at least 24 minimum clearance between the end of lower links and tractor cab Operator must have at least 8 clearance between his back and tractor cab Ay warnine Tractor should be equipped with a front end loader or equivalent front end weight for safe and stable operation A CAUTION No warranty shall be allowed as to the attachment of the backhoe to specific tractors It is beyond our control that tractor manufacturers make changes which may require minor alterations of the BH3512 A CAUTION For tractors with a top link draft control system make sure the draft control is in its heavy position It is very important to prevent the top link from exerting pressure that may activate the draft control system Continued operation with the draft control system activated can cause overheating of the hydraulic fluid and can cause tractor hydraulic pump failure Put the draft control lever to the bottom of the quadrant Ay warnine You must secure the backhoe top link to the main backhoe frame with TWO 7 8 x 2 1 2 bolts and hardware EXTREME DANGER exists to the operator if the procedure is not properly followed 7 14 08 BH3512 Backhoes 340 131M 15 Table of Contents Section 1 Assembly
20. and Set Up Land Pride Bucket Installation Refer to Figure 1 10 Assemble the bucket 1 with the pins 2 and roll pins 3 as shown Bucket Installation Figure 1 10 19369 Locking Bar Installation Optional 1 After the backhoe is attached to the tractor in working position proceed with the following steps to install the lower drawbar link locks in Figure 1 9 2 Install pins 3 through eyebolt 2 with the eyebolts being located on each side of backhoe lower link sockets Secure pins in place with lynch pins 4 3 Install lower link lock angles right J and left K as indicated in the drawing Place lockwashers L and install nuts M on eyebolts and snug nuts in place 4 Adjust the 3 4 bolt against the tractor drawbar link Lock adjustment screw N with locknut O 5 Tighten eyebolt 2 with nut and jam nut Tractor Lower Link Locking Bar Installation Figure 1 9 Seat Assembly Refer to Figure 1 11 Assemble the seat as shown with the 3 8 flange nuts Adjust seat positioning to your comfort by releasing latch located beneath the front of the seat Seat Assembly Figure 1 11 19368 16 BH3512 Backhoes 340 131M 7 14 08 Land Pride Section 2 Operating Instructions Table of Contents IMPORTANT When loading or unloading dipper stick Must be extended to avoid contact with ground Failure to do so may result in serious damage to backhoe assembly Refer to Fig
21. andy A Keep emergency numbers for doctor ambulance hospital and fire department near phone Keep Riders Off Machinery A Riders obstruct the operator s view they could be struck by foreign objects or thrown from the machine A Never allow children to operate equipment a o Wear Protective Equipment A Protective clothing and equipment should be worn A Wear clothing and equipment appropriate for the job Avoid loose fitting clothing A Prolonged exposure to loud noise can cause hearing impairment or hearing loss Wear suitable hearing protection such as earmuffs or earplugs A Operating equipment safely requires the full attention of the operator Avoid wearing radio headphones while operating machinery ait Z Avoid High Pressure Fluids Hazard A Escaping fluid under pressure can penetrate the skin causing serious injury A Avoid the hazard by relieving pressure before disconnecting hydraulic lines A Use a piece of paper or cardboard NOT BODY PARTS to check for suspected leaks A Wear protective gloves and safety glasses or goggles when working with hydraulic systems A If an accident occurs see a doctor immediately Any fluid injected into the skin must be surgically removed within a few hours or gangrene may result WT 7 14 08 BH3512 Backhoes 340 131M Table of Contents Land Pride Important Safety Information
22. cheme If you have any questions concerning the specifics for your situation please contact your dealer before attempting operation Power Beyond Closed Center Kit Part No 340 084A For power beyond applications a Power Beyond and Closed Center Kit Part 340 084A must be purchased from your Land Pride Dealer then perform the following steps 3 Remove return hose and elbow only if it was installed at point B 4 Remove plug 4 from port A and install Power beyond sleeve 1 in port B as shown in Figure 1 2 5 Install a 8 O Ring ell Part 839 882C 2 into closed center sleeve 1 opening This converts it to a power beyond sleeve 6 Install a high pressure hose going to the inlet of another valve front loader valve This hose is not furnished 7 Ifthe return hose was installed at Point B it must be relocated and installed at point A of the outlet section Remove the O Ring plug and install one 839 768C adapter Connect the return hose to the elbow and the other end to the oil sump of the tractor a Power Beyond Hydraulic Systems Figure 1 2 Choose the Appropriate Hosing Independent P T O Hydraulic Pump System Install the independent hydraulic system onto the backhoe according to the following procedures Refer to Figure 1 3 and Figure 1 4 for the identification of the parts During the assembly use pipe compound on all pipe fittings None is required on the
23. close to ditches It is always extremely dangerous to work in a position where the danger of tipping or sliding exists A CAUTION Digging on a slope should be done from the top down When digging across a slope use the stabilizers to keep the backhoe level and ALWAYS dump uphill Use caution when digging under these conditions Move the unit carefully and at a safe ground speed The following suggestions should aid you in gaining maximum efficiency with your backhoe Digging at the Correct Angle Dipper Stick amp Boom To obtain the best penetration the dipper stick should be at an angle Do not extend the boom and the dipper stick out into a straight line See Figure 2 4 Incorrect Angle Dipper Stick amp Boom Digging Angle Figure 2 4 7 14 08 BH3512 Backhoes 340 131M 19 Table of Contents Section 2 Operating Instructions Land Pride Bucket After you have filled the bucket do not pull the dipper stick any closer to the boom than is necessary in order to clear the hole When the bucket is clear swing it to the side to dump Always start dumping far enough to the side so as not to run out of dumping room It is desirable while swinging to the side to make contact with the already removed material in order to lessen shock on the machine This also aides the operator in pushing the material away from the working area 19376 Correct Angle Incorrect Angle 19377 Bucket Digging Angle Figur
24. e 2 5 The length of the pass should be just long enough so that the bucket will be full at the end of the pass The depth of the pass will depend upon the type of soil Do not drag a full bucket of dirt After making a pass you will be able to determine how deep you will be able to dig To control the depth of the pass work the bucket and dipper stick controls alternately In this way you can take an even bite each time you make a pass and obtain a full bucket Refer to Figure 2 6 When loading trucks curling the bucket close to the dipper stick will prevent undue spillage when the bucket is raised so that it can be dumped in the truck bed To obtain a level bottom set the bucket teeth at a slight angle Keep this angle as you drag the bucket with the dipper stick by gradually uncurling the bucket Intermittently pull the boom lever at the same time to maintain a level bottom P ay Myth ty Ma ae ght LUT z ri GAL SUNGI myg Ob Md 0 UG 19371 Level Bottom Figure 2 6 20 BH3512 Backhoes 340 131M 7 14 08 Land Pride Section 3 Maintenance and Lubrication Table of Contents Maintenance Proper servicing and adjustment can increase the life of any implement With careful and systematic inspection you can avoid costly maintenance time and repair A CAUTION For safety reasons each maintenance operation must be performed with the backhoe lowered completely to the ground or f
25. e backhoe in a clean dry place Bucket Tooth Replacement To remove a tooth 1 Heat the tooth with a torch at point A this is the compressed area that overlaps B 2 Hammer at the top of the tooth until the tooth comes free from the shank To replace a tooth 1 Hammer the tooth onto the shank 2 Heat at point A and hammer the heated section into recess B Bucket Tooth Replacement 19305 Figure 5 1 7 14 08 BH3512 Backhoes 340 131M 21 Table of Contents Land Pride Section 3 Maintenance and Lubrication Lubrication Lu brication 0 Multipurpose Multipurpose i Multipurpose Intervals at which spray lube grease lube oil lube lubrication is required Legend Bucket Pivot Type of Lubrication Multipurpose Grease Quantity As required Bucket Cylinder Base End Type of Lubrication Multipurpose Grease Quantity As required Dipper Stick Pivots Type of Lubrication Multipurpose Grease 20556 Quantity As required 22 BH3512 Backhoes 340 131M 7 14 08 Land Pride Table of Contents Section 3 Maintenance and Lubrication FN Boom Cylinder Rod End Type of Lubrication Multipurpose Grease Quantity As required Boom Pivot Type of Lubrication Multipurpose Grease Quantity As required FN Boom Cylinder Base End Type of Lubrication Multipurpose Grease Quantity As required 7 14 08 BH3512 Backhoe
26. e you with quality customer service If customer service or repair parts are required contact a Land Pride dealer A dealer has trained personnel repair parts and equipment needed to service the backhoe The parts on your backhoe have been specially designed and should only be replaced with genuine Land Pride parts Therefore should your backhoe require replacement parts go to your Land Pride Dealer Serial Number Plate For prompt service always use the serial number and model number when ordering parts from your Land Pride dealer Be sure to include your serial and model numbers in correspondence also Refer to Figure 1 for the location of your serial number plate Serial Number Plate Location Figure 1 Further Assistance Your dealer wants you to be satisfied with your new backhoe If for any reason you do not understand any part of this manual or are not satisfied with the service received the following actions are suggested 1 Discuss the matter with your dealership service manager making sure he is aware of any problems you may have and that he has had the opportunity to assist you 2 If you are still not satisfied seek out the owner or general manager of the dealership explain the problem and request assistance 3 For further assistance write to Land Pride Service Department 1525 East North Street P O Box 5060 Salina Ks 67402 5060 E mail address lpservicedept landpride com 6 BH3512 Backhoes 34
27. embly section of this manual Return line was replaced with high pressure hose Valve used in power beyond applica tion without installation of power beyond sleeve Poppet stuck open or dirt under seat Pilot poppet seat damaged Poppet sticking in relief valve housing Wear due to dirt Locknut and adjustment screw loose Damaged seats worn O Rings parts sticking due to dirt Replace O Ring seals Remove high pressure hose and replace it with correct low pressure hose Replace O Ring seals Install power beyond sleeve as shown in assembly section of this manual Check for foreign matter between poppets and their mat ing members Members must slide freely Remove and clean dirt out If parts are damaged replace complete relief valve See How to Set Pressure Check seats for scratches nicks or other marks Replace valve if damaged Replace worn or damaged O Rings and back up rings Inspect for free movement of components check seat for scratches nicks or other marks Replace complete relief if metal parts are damaged Backhoe does not Low oil supply Add oil operate Hoses not properly connected Check hose connections Worn or damaged pump Replace or repair pump Broken line Check for leaks Replace line 7 14 08 BH3512 Backhoes 340 131M 27 Table of Contents Section 6 Troubleshooting Problem Slow operation and poor Hydraulic System Engine speed too low Land
28. es belts tines etc Land Pride reserves the right to inspect any equipment or parts which are claimed to have been defective in material or workmanship This Warranty does not apply to any part or product which in Land Pride s judgment shall have been misused or damaged by accident or lack of normal maintenance or care or which has been repaired or altered in a way which adversely affects its performance or reliability or which has been used for a purpose for which the product is not designed Misuse also specifically includes failure to properly maintain oil levels grease points and driveline shafts Claims under this Warranty must be made to the dealer which originally sold the product and all warranty adjustments must be made through such dealer Land Pride reserves the right to make changes in materials or design of the product at any time without notice This Warranty shall not be interpreted to render Land Pride liable for damages of any kind direct consequential or contingent to property Furthermore Land Pride shall not be liable for damages resulting from any cause beyond its reasonable control This Warranty does not extend to loss of crops any expense or loss for labor supplies rental machinery or for any other reason No other warranty of any kind whatsoever express or implied is made with respect to this sale and all implied warranties of merchantability and fitness for a particular purpose which exceed the obligat
29. ide replacement 13 Do not operate from any position other than the parts backhoe s operator s seat 30 Perform all maintenance procedures as 14 Before swinging the backhoe for any reason make recommended sure you have room to swing and that all persons are 31 Anytime hoses are disconnected from your backhoe clear of the backhoe cover all open ports with protective caps or plugs in 15 Be extra careful when working on hillsides and close order to prevent contamination of the oil supply to alte le Dr any pace wiere Ranger eulpping or IMPORTANT Make sure that there is sufficient sliding is possible 7 clearance for the operator if the backhoe is mounted 16 Do not dig under the stabilizers or backhoe as a to a tractor with a cab or is equipped with a ROPS cave in could occur The ROPS may need to be extended or flipped 17 Be sure you are not digging over underground wiring around to obtain sufficient clearance or other underground obstructions 18 When digging to either side and close to the tractor be extremely careful that the backhoe does not contact the stabilizers as serious damage could occur 7 14 08 BH3512 Backhoes 340 131M 7 Table of Contents Section 1 Assembly and Set Up Tractor Requirements Ay CAUTION Your backhoe must be mounted only on a tractor equipped with a Category 2 and 3 hitch Failure to do so may result in serious injury NOTE In order to maintain steering control on your tr
30. ion line filter plugged Clean filter Oil too heavy Use a lighter oil Jerky or erratic action Blown Return Valve Air in system Wrong type of oil Check for loose connections and or cycle all valves to remove air Check tractor manual For Independent Hydraulic System use Type A non foaming hydraulic oil Foamy oil Improperly connected Check tractor manual For Independent Hydraulic System use a Type A non foaming hydraulic oil Make sure all connections are as shown in the assembly section of this manual 28 BH3512 Backhoes 340 131M 7 14 08 Land Pride 1 4 20 Section 7 Appendix Table of Contents Torque Values Chart Bolt Head Identification Grade 2 Grade 5 Bolt Head Identification 1 4 28 8 5 5 16 18 5 16 24 3 8 16 15 17 4 3 6 5 9 7 7 5 11 8 15 11 17 12 26 19 36 27 3 8 24 7 16 14 7 16 20 1 2 13 33 24 52 39 72 53 39 29 61 45 85 62 M12 X 1 75 58 42 91 67 125 93 mxs feo faa fos lro fiso for 1 2 20 9 16 12 9 16 18 5 8 11 90 66 105 77 145 105 92 68 145 105 200 150 99 73 155 115 1215 160 5 8 18 3 4 10 3 4 16 7 8 9 155 115 1240 180 335 245 195 145 310 230 405 300 220 165 350 260 485 355 7 8 14 Tae ene P7 310 230 650 480 900 665 480 355 760 560 780 525 390 830 610 1150 845 IM30xX3 5__ 96
31. ions set forth in this written warranty are hereby disclaimed and excluded from this sale This Warranty is not valid unless registered with Land Pride within 30 days from the date of purchase by the end user 7 14 08 BH3512 Backhoes 340 131M 31 Corporate Office PO Box 5060 Salina Kansas 67402 5060 USA www landpride com
32. lic Circuits 2 2 0 0 eee 11 Testing Open Center System 11 Checking a Single Circuit 11 Checking the Cylinders 12 Return Hose 2 0000ee eee eee 12 Testing Closed Center System 12 Checking a Single Circuit 12 Checking the Pump 4 12 Checking The Cylinders 12 Using Tractor Hydraulics All Tractors 13 Using Tractor Hydraulics John Deere 13 Mounting The Backhoe 13 Description of Major Backhoe Parts 13 Bucket Installation 0005 16 Locking Bar Installation Optional 16 Seat Assembly 00020000 aes 16 Copyright 2008 All rights Reserved Section 2 Operating Instructions 17 Preparing For Operation 4 17 Preparing The Backhoe 17 Preparing The Tractor 17 Operating The Backhoe 055 17 Transporting The Backhoe 17 Control Functions 00 cece eens 18 Stabilizers ee ciwewiwrwwruraiaaiawiwulauiurabawtarabewtara 18 BOOM sxc tcteice modi ncaa e od 18 Dipper Stick And Bucket 18 Digging Suggestions 00 05 19 Digging at the Correct Angle 19 Section 3 Maintenance and Lubrication 21 Maintenance 000 eee eee 21 Storage cc ee 21 Bucket Tooth Replacement
33. mbly and Set Up Table of Contents Refer to Figure 1 1 1 Adjust the Valve Bypass for Closed Center Conversion only a Remove the cover nut 3 from the valve bypass This exposes a socket head screw b Loosen locknut and turn socket head screw in approximately four complete turns then tighten locknut c Replace cover nut Be sure to replace the washer with the cover nut as it acts as a gasket 2 Installing the Closed Center Sleeve a Return hose must be connected to the return section of the valve at point A and with the other end to the tractor b Remove elbow at point B and install the closed center sleeve 1 Use the plug 2 that was removed from port A to plug the sleeve c Withthe removal of the O Ring plug from the front of outlet section of the valve Point A and replace with a 839 768C O Ring adapter Connect return line to the adapter and return to oil sump of the tractor 19516 Closed Center Hydraulic Systems Figure 1 1 This procedure converts the valve to a closed center operation If the valve is set for closed center operation it may be converted back to open center by reversing the above procedure Power Beyond Hydraulic System If you wish to run both a loader and a backhoe from the same hydraulic system make your connection as illustrated in Figure 1 2 Since there are so many variations for this type of setup we are showing only a generalized hosing s
34. ness The signal words are A DANGER Indicates an imminently hazardous situation which if not avoided will result in death or serious injury This signal word is limited to the most extreme situations typically for machine components that for functional purposes cannot be guarded Look For The Safety Alert Symbol The SAFETY ALERT SYMBOL indicates there is a potential hazard to personal safety involved and extra safety precaution must be taken When you see this symbol be alert and carefully read the message that follows it In addition to design and configuration of equipment hazard control and accident prevention are dependent upon the awareness concern prudence and proper training of personnel involved in the operation transport maintenance and storage of WARNING Indicates a potentially hazardous situation which if not avoided could result in death or serious injury and includes hazards that are exposed when guards are removed It may also be used to alert against unsafe practices A CAUTION Indicates a potentially hazardous situation which if not avoided may result in minor or moderate injury It may also be used to alert against unsafe practices For Your Protection A Thoroughly read and understand the Safety Label section read all instructions noted on them Shutdown and Storage A Lower machine to ground put tractor in park turn off engine
35. olded with the transport boom lock engaged and the tractor engine shut off with ignition key removed e After using the backhoe for several hours check all bolts to be sure they are tight e Lubricate items as listed under Lubrication this section starting on page 22 e Replace any worn damaged or illegible safety labels by obtaining new labels from your Land Pride Dealer Information about labels is located under Safety Labels in the Important Safety Information section starting on page 1 Storage For short periods coat all exposed cylinder shafts with grease or a corrosion preventive Install dust caps on the quick couplers if equipped to prevent dirt contamination of the hydraulic system Or if possible connect the quick couplers together At the end of the working season or when the backhoe will not be used for a long period it is good practice to clean off any dirt or grease that may have accumulated on the backhoe and any of the moving parts It may be necessary to scrape off compacted dirt from the bucket then use a garden hose to thoroughly clean the surface Inspect the backhoe for loose damaged or worn parts and adjust or replace if needed Lubricate as noted in the Lubrication portion of this section starting on page 22 Repaint parts where paint is worn or scratched to prevent rust Aerosol touch up paint is available from your Land Pride dealer Order Land Pride part 821 002C for Black Stor
36. on UNLOAD C STABILIZER DOWN BOOM DOWN SWING LEFT SWING LEFT RIGHT STABILIZER UP BOOM UP Ne DIPPER STABILIZER i OUT DOWN BUCKET CURL BUCKET UNCURL RIGHT DIPPER IN STABILIZER UP J Control Levers Figure 2 3 18 BH3512 Backhoes 340 131M 7 14 08 Land Pride Section 2 Operating Instructions Table of Contents Digging Suggestions A CAUTION Always be sure that the stabilizers maintain contact with the ground during digging operations Take the time to readjust the stabilizers when necessary during digging Before you begin digging extend the stabilizers so that they make a firm contact with the ground This is essential in order to gain the necessary stability and weight transfer to insure safe digging Observe the following cautions while digging A CAUTION Before swinging the backhoe make sure you have room to swing and that all people are clear of the backhoe For added protection place a barricade around the swing area before commencing operation A CAUTION Be sure that you are not digging over any underground wiring pipes or other obstructions If there is any doubt call your public service agency A CAUTION When digging to either side and or close to the tractor be extremely careful that the bucket does not contact the stabilizers as serious damage may occur A CAUTION Be extra careful when working on hillsides and or
37. r and Attachment A Always drive up the ramp with heavy end uphill Engage parking brake A Secure loader and attachments using tiedowns and chains Use towing vehicle and trailer of adequate capacity Practice Safe Maintenance A Understand procedure before doing work Use proper tools and equipment refer to Operator s Manual for additional information A Work in a clean dry area A Lower the implement to the ground put tractor in park turn off engine and remove key before performing maintenance A Allow implement to cool completely A Do not grease or oil implement while it is in operation A Inspect all parts Make sure parts are in good condition amp installed properly A Remove buildup of grease oil or debris A Remove all tools and unused parts from implement before operation by Le Tractors With Cabs Tractors Equipped With ROPS A There should be sufficient clearance for the operator when mounted to a tractor with a cab or that is equipped with ROPS A The ROPS may need to be extended or flipped around to obtain sufficient clearance 2 BH3512 Backhoes 340 131M 7 14 08 Land Pride Table of Contents Important Safety Information These are common practices that may or may not be applicable to the products described in this manual Prepare for Emergencies A Be prepared if a fire starts A Keep a first aid kit and fire extinguisher h
38. rformance Two lever hydraulic valve with excellent feathering characteristics and minimum cylinder cavitation for easy operation and control Safety Boom Lock Standard on all models for transportation safety Hydraulic Swing Cushion Protection Two Double Acting Swing Cylinders Patented swing cushion slows down and stops swing automatically prevents shock loads at the end of arm travel One cylinder pushing and one pulling for a powerful smooth and controllable swing arch Lower Drawbar Link Locks Hydraulic Hose Protection Standard on all models for more stability in operation and less stress in transportation Abrasive resistant coverings for longer life Adjustable Folding Seat Offering more comfort and room for operation and less operator fatigue Hydraulic Pressure Gauge Kit Independent Hydraulic System Standard equipment and positioned on control valve for easy observation Optional with 540 gear type pump Bucket Options 12 to 36 Bucket options Power Beyond Option Digging Depth Maximum Range Control valve adaptability available as an optional kit Maximum Reach from Swing Point Swing Arch 180 degrees Bucket Rotation 172 degrees Bucket Pry Out Power 12 500 Ibs 26 8BH3512 Backhoes 340 131M 7 14 08 Land Pride Section 6 Troubleshooting Table of Contents Problem Sticking plungers in Hydraulic Valve Ca
39. rt Lock Safety transport boom flip over lock Replaceable steel at all major pivot points Hydraulic Pressure Gauge Standard Adjustable Hinged Seat Standard Ripper Tooth Optional Locking Bar Mount Optional 7 14 08 BH3512 Backhoes 340 131M 25 Section 5 Features and Benefits Table of Contents BH35 Series Backhoes Tractor HP range 50 150 HP Hitch 3 Point Rigid Hitch Mount with Stabilizing Kit for Maximum digging stability Tubular Construction Relief Valve Protection Tubular and box designed frame on boom and dipper stick assemblies for added strength and longer life One master and four circuit relief valves with anti cavitation feature to protect against accidental overloads and errors in operation Wide Stance Stabilizer Legs Optional Rubber Street Pads Wide support base with large steel foot pads for more stable and safer operational control Rubber pads can be added to steel stabilizer pads when using on concrete to keep from sliding Plated and Locked Wear Pins Pivot Point Replaceable Bushings Plated and locked pins on all pivot points for added safety All pivot points have replaceable and greaseable plated wear bushings for longer life Double Acting Cylinders Six spool valve With Nitro Steel black piston rods for superior wear and corrosive resistance over chrome shafts High quality internal seals for dependable long life pe
40. s 340 131M 23 Table of Contents Land Pride Section 3 Maintenance and Lubrication Stabilizer Arms Type of Lubrication Multipurpose Grease Quantity As required Type of Lubrication Multipurpose Grease Quantity As required Boom Swing Cylinder Base End Type of Lubrication Multipurpose Grease Quantity As required 24 BH3512 Backhoes 340 131M 7 14 08 Land Pride Table of Contents Section 4 Specifications amp Capacities BH35 Series Backhoes BH3512 Tractor Horse Power Rating 50 150 Maximum Digging Depth 12 6 Digging Depth 2 Flat Bottom Reach from Swing Pivot 14 6 Bucket Clearance or Loading Height 9 2 Swing Arc 180 deg Stabilizer Spread Folded Down Operating Position 10 7 Stabilizer Spread Folded Down Transport Position 6 5 Hydraulic System Four Lever 6 spool control valve Main Circuit Relief 2250 PSI four individual circuit reliefs Hydraulic Fluid Minimum 8 0 GPM Hydraulic Fluid Maximum 11 0 GPM Boom Lifting Power 1729 lbs less bucket boom straight out dipper stick at 90 deg boom and dipper stick extended Bucket Cylinder Digging Force 5 500 lbs Bucket Pryout Power partially curled 12 500 Ibs Hydraulic Cylinders Equipped with NitroSteel corrosive resistant black shafting Swing Shock Absorbers Hydraulic swing cushion protection Locked in place grease zerks at pivot points Transpo
41. s can be added to the stabilizer legs for working on concrete Selected skid steer loader mounting kits are available for added versatility See Features and Benefits Section 6 for additional information Using This Manual e This Operator s Manual is designed to help familiarize you with safety assembly operation adjustments troubleshooting and maintenance Read this manual and follow the recommendations to help ensure safe and efficient operation The information contained within this manual was current at the time of printing Some parts may change slightly to assure you of the best performance To order a new Operator s or Parts Manual contact your authorized dealer Manuals can also be downloaded free of charge from our website at www landpride com or printed from the Land Pride Service amp Support Center by your dealer Terminology Right or Left as used in this manual is determined by facing the direction the machine will operate while in use unless otherwise stated Definitions NOTE A special point of information that the operator must be aware of before continuing IMPORTANT A special point of information related to its preceding topic Land Pride s intention is that this information should be read and noted before continuing Owner Assistance The Warranty Registration card should be filled out by the dealer at the time of purchase This information is necessary to provid
42. s in the following instructions Description of Major Backhoe Boom Cylinder Inside Boom Main Frame Stabilizer 20555 Figure 1 5 7 14 08 BH3512 Backhoes 340 131M 13 Table of Contents Land Pride Section 1 Assembly and Set Up 2 Back tractor against backhoe in mounting position 6 Remove the pin 3 and extend the dipper stick 3 Connect tractor s upper 3 point to backhoe cylinder until the rod end lines up with the holes in the ree dipper stick re install pin 3 bolt 1 amp lock nut 4 Apply hydraulic power to the backhoe 2 Refer to Figure 1 7 5 Raise the boom to take the tension off of the boom lock so you can release the lock Figure 1 6 Dipper Cylinder Installation Figure 1 7 20559 A CAUTION Keep all people clear of your work area during the next steps Until the backhoe is securely mounted the operator should make sure that no portion of his body is beneath any part of the backhoe K S VA NY gt X SN 7 Extend boom and lower dipper stick until they contact the ground 8 By manipulating the cylinder and placing down pressure on the boom and stabilizers lift the backhoe vertically to approximately 10 to 12 of ground clearance A xX ys N F K A Z 20557 Transport Lock Transport Lock Q Figure 1 6 19380 Ground Clearance Figure 1 8 14 BH3512 Backhoes 340 131M 7 14 08 Land Pride Section 1
43. s it To check these operate the tractor at a very low speed while actuating the stabilizer control in the UP position until the cylinder is entirely collapsed continue holding the control lever and read the PSI on the gauge Next speed the tractor up If the PSI increases as the speed increases this indicates a worn pump If the PSI remains steady but less than 2250 Ibs then the backhoe s master relief is set too low See HOW TO SET PRESSURE ON MAIN RELIEF VALVE section A CAUTION Never attempt to adjust any relief valve without a gauge in a pressure line Checking a Single Circuit If the power or speed goes down on one function the problem is in that valve section circuit relief cylinder or a restriction in the hoses The boom and stick are restricted to prevent sudden drop To check the individual circuit move the cylinder to the end of its stroke and continue holding the valve then take a pressure reading and compare the readings they should be the same If they are not the same it could be a faulty circuit relief Circuit reliefs are on the down stroke of the 7 14 08 BH3512 Backhoes 340 131M 11 Table of Contents Section 1 Assembly and Set Up Land Pride boom the power crowd side of the dipper stick and both sides of the swing If the circuit relief is faulty it could be caused by dirt This could be rectified by removing and cleaning the circuit relief See instructions for Circuit Relief Val
44. tenance costs and down time Open Center System Remove cap from the 1 2 high pressure hose connected to the right hand side of backhoe valve The high pressure hose may be connected to any high pressure outlet in the tractor system A tractor remote hydraulic valve is usually the preferable source An oil quick coupler that is compatible to the oil coupler on the tractor valve is permissible The return hose must be connected so that the oil returns directly to the tractor oil sump DO NOT connect the return hose directly to the tractor remote valve If the operator would be reversed This could result in damage to the return hose or the backhoe s hydraulic valve A CAUTION The hydraulic valve can be damaged by reverse flow of oil through the valve disconnecting the return hose while the tractor is running and by using more than 12 GPM of oil flow while operating The valve manufacturer will not warrant the valve when damaged under these circumstances Closed Center System Power Beyond Closed Center Kit Part No 340 084A A CAUTION If you are going to use a closed center tractor hydraulic system to power your Land Pride Backhoe A Power Beyond and Closed Center Kit must be purchased from your Land Pride Dealer then you must follow carefully the directions below Failure to do so may cause extensive damage to your tractor and or Land Pride Backhoe 8 BH3512 Backhoes 340 131M 7 14 08 Land Pride Section 1 Asse
45. ting The Backhoe A CAUTION While traveling with the backhoe the tractor must have at least 20 of the combined tractor and backhoe weight on its front wheels Add additional front end weight if necessary to meet this requirement This is necessary in order to maintain complete control of the tractor during travel When loading or unloading from the trailer you may need to extend the dipper stick out to keep the bucket from dragging Refer to Figure 2 1 Your backhoe comes equipped with a transport lock See Figure 1 6 on page 14 This transport lock should be put into proper position anytime you are transporting your backhoe To ready your backhoe for transport perform the following 7 14 08 BH3512 Backhoes 340 131M 17 Table of Contents Section 2 Operating Instructions Land Pride When hauling the backhoe on a trailer lower the dipper stick to the trailer if possible See Figure 2 2 GCOHOP a a ee 19564 Transporting on Trailer Figure 2 2 Observe the following precautions while transporting the backhoe with tractor 1 When traveling on roads use the proper safety lights and warning signs Check your local regulations 2 When traveling over rough ground do not exceed safe speed limits 3 Do not make sudden starts or stops 4 When climbing grades be particularly careful not to make sudden starts Control Functions Refer to Figure 2 3 In
46. ure 2 1 Unloading Backhoe From Trailer Figure 2 1 Preparing For Operation Preparing The Backhoe Unlock the boom lock You may have to raise the boom in order to relax the tension on the lock Preparing The Tractor Move the tractor s gearshift lever to a neutral position Set the engine throttle to the correct RPM For added stability lower the front end loader to the ground if equipped Move the draft control lever to the bottom most position Refer to your Tractor Operator s Manual for Draft Control Terminology If you are using an independent hydraulic system engage the PTO Operating The Backhoe A CAUTION Operate the backhoe only from the backhoe operator s seat Be sure to place your feet on the footpads during operation This protects them from injury that could result from moving parts A CAUTION For tractors with a top link draft control system make sure the draft control is in its heavy position It is very important to prevent the top link from exerting pressure that may activate the draft control system Continued operation with the draft control system activated can cause overheating of the hydraulic fluid and can cause tractor hydraulic pump failure Put the draft control lever to the bottom of the quadrant IMPORTANT If you are not familiar with the operation of the Backhoe DO NOT PROCEED until you have studied the following Transporting the Backhoe section Transpor
47. use Solution Excessively high oil temperature Eliminate restrictions in pipe lines and filtering system Dirt in oil Change oil clean system Pipe fittings too tight Check torque Valve warped from mounting Loosen valve and check Excessively high pressure in valve Check with gauge on inlet and cylinder lines Handle or linkage binding Plunger bent Return spring damaged Free up linkage Replace valve or section Replace faulty parts Spring or detent cap binding Loosen cap re center and re tighten Valve not at thermal equilibrium Let system warm up Leaking Seals in Hydraulic Valve Paint on or under seal Remove and clean Excessive back pressure Open or enlarge line to reservoir Dirt under seal Remove and clean Scored plunger Loose seal plates Replace valve or section Clean and tighten Cut or scored seal Replace faulty parts Unable to move plunger in Hydraulic Valve Blown or leaking O ring seals between valve sec tions in Hydraulic Valve Can t get pressure in Relief Valve Erratic pressure in Relief Valve Pressure setting not correct in Relief Valve Relief Valve leaks Dirt in valve Clean and flush out Plunger cap full of oil Bind in linkage Replace seals Free up linkage Improperly connected Replace O Ring seals Make sure all connections are as shown in the ass
48. ve Checking the Cylinders Take a reading at idle speed with cylinder at end of stoke Next take another reading at high speed If the pressure increases with speed it would indicate a faulty cylinder Return Hose If the return hose bursts check to see if the high pressure line is connected to pressure port of the backhoe or if the return hose is restricted usually by an oil coupler Testing Closed Center System On aclosed center system the gauge will read the same as the tractor s system pressure rating e i older Closed Center John Deere s will read 2200 to 2250 PSI Checking a Single Circuit If there is a loss of power on one circuit it may be checked by actuating the valve The pressure should drop until the end of cylinder stroke if the pressure does not return to the original reading this would indicate a faulty cylinder or circuit relief Circuit reliefs are on the down stroke of the boom the power crowd side of the dipper stick and both sides of the swing If the circuit relief is faulty it could be caused by dirt This could be rectified by removing and cleaning the circuit relief Checking the Pump If the tractor s PSI is rated at 2250 Ibs and the gauge reads less the tractor s hydraulic system is faulty or the backhoe s valve is improperly set for closed center operation See Closed Center Hydraulic System Section Checking The Cylinders Take a pressure reading at idle speed with
Download Pdf Manuals
Related Search