Land Pride BH3512 Operator'S Manual Download Page 1

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Table of Contents

20555

340-131M

7/14/08

BH3512

Backhoes

Operator’s Manual

Summary of Contents for BH3512

Page 1: ...ight 2008 Printed Read the Operator s manual entirely When you see this symbol the subsequent instructions and warnings are serious follow without exception Your life and the lives of others depend on it Table of Contents 20555 340 131M 7 14 08 BH3512 Backhoes Operator s Manual ...

Page 2: ...Power Beyond Closed Center Kit Part No 340 084A 8 Power Beyond Hydraulic System 9 Power Beyond Closed Center Kit Part No 340 084A 9 Choose the Appropriate Hosing 9 Independent P T O Hydraulic Pump System 9 Testing Procedure for Hydraulic Circuits 11 Testing Open Center System 11 Checking a Single Circuit 11 Checking the Cylinders 12 Return Hose 12 Testing Closed Center System 12 Checking a Single ...

Page 3: ...TY 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 oper...

Page 4: ... tiedowns and chains Use towing vehicle and trailer of adequate capacity Use Safety Lights and Devices 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 Flashing warning lights and turn signals are recommended whenever driving on public roads Practice Safe Maintenance Understand procedure...

Page 5: ... operator Avoid wearing radio headphones while operating machinery These are common practices that may or may not be applicable to the products described in this manual Avoid High Pressure Fluids Hazard Escaping fluid under pressure can penetrate the skin causing serious injury Avoid the hazard by relieving pressure before disconnecting hydraulic lines Use a piece of paper or cardboard NOT BODY PA...

Page 6: ... 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...

Page 7: ...5 Important Safety Information 7 14 08 BH3512 Backhoes 340 131M Land Pride Table of Contents 19366 818 339C Warning High Pressure 19366 839 933C Warning General 19366 839 932C Caution Watch your step ...

Page 8: ...ainage 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 shoes can be added to the stabilizer legs for working on concrete Selected skid steer...

Page 9: ...r 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 19 Do not attempt to raise the tractor off the ground or move the tractor forward or backward using the boom or stabilizers 20 When leaving the backhoe for any reason lower the bucket to the ground for safety 21 Neve...

Page 10: ...revent sudden shock loads on the cylinders pins hoses seals etc This results in a smooth operation and reduced maintenance costs and down time NOTE In order to maintain steering control on your tractor 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 Open Center System Remove cap from the 1 2 high pressure hose conn...

Page 11: ...t is located on the left side of the reservoir Power Beyond Hydraulic Systems Figure 1 2 19386 B A 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 ...

Page 12: ...ny quick coupler with the engine running will result in almost certain pump damage CAUTION The hydraulic valve can be damaged by 1 Reversing the flow of oil through the valve 2 Hydraulic lines disconnected during transport 3 Disconnecting the return line while the tractor is running 4 A faulty quick coupler 5 More than 12 GPM of oil flow while operating the backhoe 6 By connecting the backhoe to a...

Page 13: ...ly 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 lbs then the backhoe s master relief is set too low See HOW TO SET PRESSURE ON MAIN RELIEF VALVE section CAUTION Never attempt to adjust any relief valve without a gauge in a press...

Page 14: ...linder 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 lbs and the gauge reads less the tractor s hydraulic system is faulty or...

Page 15: ...mission sump 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 trans...

Page 16: ...until the rod end lines up with the holes in the dipper stick re install pin 3 bolt 1 lock nut 2 Refer to Figure 1 7 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 7 Extend boom and lower dipper stick until they contact the ground 8 By manipulati...

Page 17: ...te 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 WARNING Tractor roll bars and tractor cabs can 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 WARNING Tractors with cabs must have at ...

Page 18: ... 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 Bucket Installation Figure 1 10 19369 Sea...

Page 19: ...he 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 Transporting The Backhoe 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 a...

Page 20: ...t 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 M...

Page 21: ...uctions If there is any doubt call your public service agency 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 CAUTION Be extra careful when working on hillsides and or close to ditches It is always extremely dangerous to work in a position where the danger of tipping or sliding exists ...

Page 22: ...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 Correct Angle 19376 In...

Page 23: ...r Lubrication this section starting on page 22 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 co...

Page 24: ...rpose Grease Quantity As required 25 25 Bucket Pivot Type of Lubrication Multipurpose Grease Quantity As required 50 Multipurpose spray lube Multipurpose grease lube Multipurpose oil lube Intervals at which lubrication is required Lubrication Legend Lubrication 20555 25 Dipper Stick Pivots Type of Lubrication Multipurpose Grease Quantity As required 20556 ...

Page 25: ...e Table of Contents Boom Pivot Type of Lubrication Multipurpose Grease Quantity As required 25 Boom Cylinder Rod End Type of Lubrication Multipurpose Grease Quantity As required 25 20557 20555 Boom Cylinder Base End Type of Lubrication Multipurpose Grease Quantity As required 25 20556 ...

Page 26: ...f Contents 20555 Boom Swing Cylinder Base End Type of Lubrication Multipurpose Grease Quantity As required 25 25 Stabilizer Arms Type of Lubrication Multipurpose Grease Quantity As required Boom Swing Cylinder Rod End Type of Lubrication Multipurpose Grease Quantity As required 25 20555 20558 ...

Page 27: ... Minimum 8 0 GPM Hydraulic Fluid Maximum 11 0 GPM Boom Lifting Power boom straight out dipper stick at 90 deg 1729 lbs less bucket Boom Lifting Power boom and dipper stick extended 900 lbs Bucket Cylinder Digging Force 5 500 lbs Dipper Stick Cylinder Digging Force 3 300 lbs Bucket Pryout Power partially curled 12 500 lbs Tractor 3 Point Hitch Cat 2 3 Hydraulic Cylinders Equipped with NitroSteel co...

Page 28: ...orrosive resistance over chrome shafts High quality internal seals for dependable long life performance Six spool valve 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 Patented swing cushion slows down and stops swin...

Page 29: ...O Ring seals Make sure all connections are as shown in the assembly section of this manual Return line was replaced with high pressure hose Replace O Ring seals Remove high pressure hose and replace it with correct low pressure hose Valve used in power beyond applica tion without installation of power beyond sleeve Replace O Ring seals Install power beyond sleeve as shown in assembly section of th...

Page 30: ... valve spool moved from neutral Dirt in load check valve Disassemble and clean Excess oil heat Damaged or worn pump Repair or replace Too fast of an engine speed Reduce throttle Main relief bypass valve improperly set Check relief setting Draft control lever not all the way down Position correctly Oil leakage Valve spool seals Replace seals Loose hose fittings Tighten just enough to stop leakage B...

Page 31: ...30 405 300 3 4 10 235 170 360 265 510 375 M18 X 1 5 220 165 350 260 485 355 3 4 16 260 190 405 295 570 420 M20 X 2 5 280 205 440 325 610 450 7 8 9 225 165 585 430 820 605 M20 X 1 5 310 230 650 480 900 665 7 8 14 250 185 640 475 905 670 M24 X 3 480 355 760 560 1050 780 1 8 340 250 875 645 1230 910 M24 X 2 525 390 830 610 1150 845 1 12 370 275 955 705 1350 995 M30 X 3 5 960 705 1510 1120 2100 1550 1...

Page 32: ...30 Section 7 Appendix BH3512 Backhoes 340 131M 7 14 08 Land Pride Table of Contents Notes ...

Page 33: ...versely 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...

Page 34: ...Corporate Office PO Box 5060 Salina Kansas 67402 5060 USA www landpride com ...

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