New Holland LB75.B Service Manual Download | Manualshive

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Summary of Contents for LB75.B

Page 1: ...CONSTRUCTION CONSTRUCTION SERVICE MANUAL LB75 B LB90 B LB95 B LB110 B LB115 B 4WS BACKHOE LOADERS 6036702103 ...

Page 2: ... your machine and thereby affect its safety The Company is not liable for any damage caused by the use of non genuine parts and accessories MODEL CODES The complete range of Backhoe Loaders described in this manual are identified below EUR NA FB 695 FB FB LB LB 100 2 200 2 LB LB LB LB 580 590 SM 110 2 LB 95 B LB 115 B 895 4WS 115 B 90 B 95 B 110 B 4WS SR SR 75 B 110 B 4WS 695 8200 LB 8100 8110 SR ...

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Page 4: ... 4 SECTION 21 TRANSMISSIONS CHAPTER 1 4x4 Compact Shuttle Description Page General Specifications 1 Description and Operation 5 Overhaul 28 CHAPTER 2 Powershift Introduction Description Page General Specifications 1 Description and Operation 2 Removal 35 CHAPTER 3 Powershift Operating Lever Description Page General Specifications 1 Fault Finding 14 CHAPTER 4 Powershift Overhaul includes 4 Wheel St...

Page 5: ...ication 1 Overhaul 4 CHAPTER 7 Front Axle Description Page Identification 1 Overhaul 4 CHAPTER 10 Front Axle Description Page Identification 1 SECTION 27 REAR AXLES CHAPTER 1 Rear Axle with Foot Operated Diff Lock for 2 and 4 Wheel Drive Only Description Page General Specifications 1 Overhaul 6 CHAPTER 2 Rear Axle with Electrically Operated Diff Lock for 2 and 4 Wheel Drive Only Description Page G...

Page 6: ...n Page General Specifications 1 Overhaul 5 SECTION 35 HYDRAULIC SYSTEMS CHAPTER 1 Hydraulic Circuits and Components for HUSCO Only Description Page General Specifications 2 Hydraulic Valve Spool Seals 15 Stabliliser and Extendible Dipper Control Valves 21 Loader Control Valve 33 Backhoe Control Valve 49 CHAPTER 2 Fault Finding Pressure and Flow Testing for HUSCO Only Description Page General Speci...

Page 7: ... Relief Valve 9 Dipperstick Bucket and Boom Relief Valves 9 Flow Testing Pump Performance Test 10 CHAPTER 5 Control Valves for REXROTH with Mechanical or Hydraulic Control Description Page General Specifications 1 Loader Control Valve Overhaul 2 Backhoe Control Valve Overhaul 3 Control Valve Disassembly 4 Control Valve Section Disassembly 8 CHAPTER 6 Swing System and Hydraulic Cylinders Descriptio...

Page 8: ...ening torques 1 Exploded Wiew of the Lever 2 Overhaul of the Control Block 5 SECTION 39 VEHICLE CHASSIS CHAPTER 1 CHASSIS COMPONENTS Description Page General Specifications 1 Overhaul 6 SECTION 41 STEERING SYSTEMS CHAPTER 1 Steering for 2 and 4 Wheel Drive Only Description Page General Specifications 1 Fault Finding 7 Overhaul 8 CHAPTER 2 Steering for 4 Wheel Steer Only Description Page General Sp...

Page 9: ... wiring harness repair 2 Electrical System General Fault Finding 3 CHAPTER 2 1 Powershuttle Wiring Diagrams N A and Europeen Model Description Page Fuses and Relays 2 Components 3 Connector 4 Wiring Diagrams N A and Europeen Model 6 Connectors Details 18 CHAPTER 2 2 Powershift Wiring Diagrams N A and Europeen Model Description Page Fuses and Relays 2 Components 3 Connector 4 Wiring Diagrams N A an...

Page 10: ... Fault Finding 3 7 Exploded Wiew of the Starter 6HA CHAPTER 4 Alternator 90A Description Page General Specifications 1 Fault Finding 4 Exploded Wiew of the Alternator 6 CHAPTER 5 Battery Description Page General Specifications 1 Removal and Installation 2 Battery Maintenance and Tests 3 Battery Charging 4 Common Causes of Battery Failure 6 CHAPTER 6 Service Diagnostics Calibration and Immobiliser ...

Page 11: ...cifications 2 Description and Operation 5 Overhaul Loader Controls 6 CHAPTER 2 Loader Frame Controls and Buckets for 4 Wheel Steer Only General Specifications 2 Description and Operation 4 Overhaul Loader Controls 5 SECTION 84 BACKHOE CHAPTER 1 Backhoe Boom and Dipperstick assembly Description Page General Specifications 1 Description and Operation 7 Backhoe Control Linkage Overhaul 15 Component R...

Page 12: ...e seal Coat the sealing lip with a thin layer of lubricant oil rather than grease and fill with grease the gap between the sealing lip and the dust lip of double lip seals Insert the seal into its seat and press it down using a flat punch Do no tap the seal with a hammer or a drift Take care to insert the seal perpendicularly to its seat while you are pressing it Once the seal is settled ensure th...

Page 13: ...ns we also remind the Repair Personnel that having these equipment means work in optimal technical conditions obtain best results save time and effort work more safely NOTICES Wear limits indicated for some details should be intended as advised but not binding values The words front rear right hand and left hand referred to the different parts should be intended as seen from the operator s seat or...

Page 14: ...ne is sitting on the operator s seat except if they are certified operators to assist in the op eration to be carried out Never operate the machine or use attachments from a place other than sitting at the operator s seat Never carry out any operation on the machine when the engine is running except when specifi cally indicated Stop the engine and ensure that all pressure is relieved from hydrauli...

Page 15: ... spillage of wa ter or oil Do not pile up grease or oil soaked rags as they constitute a great fire hazard Always place them into a metal container Before starting the Machine or its attachments check adjust and block the operator s seat Also 05 2003 ensure that there are no persons within the Ma chine or attachment operating range Do not keep into your pockets any object which might fall unobserv...

Page 16: ... result Always take system pressure readings using the appropriate gauges WHEELS AND TYRES Check that the tyres are correctly inflated at the pressure specified by the manufacturer Periodi cally check possible damages to the rims and tyres Keep off and stay at the tyre side when correcting the inflation pressure Check the pressure only when the Machine is un loaded and tyres are cold to avoid wron...

Page 17: ...LPFUL HINTS 1 Avoid filling tanks using jerry cans or inappropri ate pressurised fuel delivery systems which may cause considerable spillage 2 In general avoid skin contact with all fuels oils acids solvents etc Most of them contain sub stances which can be harmful to your health 3 Modern oils contain additives Do not burn con taminated fuels and or waste oils in ordinary heating systems 4 Avoid s...

Page 18: ...v ity of the components being served Connectors which show signs of movement from the original swagged position have failed and will ultimately sep arate completely A hose with a chafed outer cover will allow water entry Concealed corrosion of the wire reinforcement will subsequently occur along the hose length with resultant hose failure Ballooning of the hose indicates an internal leakage due to...

Page 19: ...t 82995768 Thread locking compound 82995773 HARDWARE TORQUE VALUES Check the tightness of hardware periodically Use the following charts to determine the correct torque when checking adjusting or replacing hard ware on the Backhoe Loader IMPORTANT DO NOT use the values listed in the charts if a different torque value or tightening pro 05 2003 TRADE DESCRIPTION LOCTITE GASKET ELIMINATOR 518 LOCTITE...

Page 20: ...12 115 13 150 17 124 14 159 18 195 22 248 28 274 31 354 40 21 28 27 36 32 43 41 56 45 61 58 79 36 49 46 63 55 75 72 97 79 107 102 138 89 121 117 158 137 186 177 240 196 266 254 344 175 237 226 307 277 375 358 485 383 519 495 671 303 411 392 531 478 648 619 839 662 897 855 1160 NOTE Torque values shown with are inch pounds IDENTIFICATION HEX CAP SCREW AND CARRIAGE BOLTS CLASSES 5 6 AND UP MANUFACTU...

Page 21: ...7 159 45 61 64 88 60 81 77 104 92 125 120 163 130 176 169 229 65 88 92 125 83 112 107 145 128 174 165 224 180 244 233 316 90 122 127 172 146 198 189 256 226 306 293 397 319 432 413 560 160 217 226 306 142 193 183 248 365 495 473 641 515 698 667 904 258 350 364 494 213 289 275 373 547 742 708 960 773 1048 1000 1356 386 523 545 739 NOMINAL SIZE 1 4 5 16 3 8 7 16 1 2 9 16 5 8 3 4 7 8 1 NOTE Torque va...

Page 22: ...Hydraulic Tests Tachometer Setting 2000 revs min Test temperature oil 80 85 C 176 185 F Cold Start Valve For reference only 26 bar 377 psi System Pressure Test 13 7 15 2 bar 198 220 psi Torque Converter 7 11 bar 101 159 psi Sealant Gasket sealant 82995774 Thread sealant 82995768 Item Description Cooler return pipe union Cooler return pipe elbow Stator support retaining bolt Flywheel to flex plate ...

Page 23: ...SECTION 1J I_Z_ JT 02_ R QllJ __QQ ff illIB_ H r UE _c_o_N_V E RT O R CHAPTER 1 2 1 0S 2003 ...

Page 24: ...he front and rear cover being welded together form the housing When the engine is running the oil in the converter flows from the impeller 1 to the turbine 2 and back to the impeller through the stator 3 This flow pro duces a maximum torque increase When enough oil flow is developed by the impeller the turbine begins to rotate driving the front input shaft The torque multiplication gradually decre...

Page 25: ... and correct output Replace Check pump output Replace seals Replace Torque Convector The torque converter is a welded unit and cannot be disassembled The only maintenance performed on the converter other than the stall test is cleaning and visual inspection A commercial torque converter cleaner may be used to clean the converter How ever if a commercial cleaner is not available the converter shoul...

Page 26: ...41 Nm 30 lbf ft STALL TEST The purpose of this test is to determine if the torque converter and hydraulic clutch assemblies are oper ating satisfactorily For the test to be conclusive the transmission hydraulic pump and pressure regulat ing valve must be operating correctly They can be checked by performing the Line Pressure Test The engine and brakes must also be in good working order 1 Check the...

Page 27: ...r one minute 6 The engine speed noted in Step 4 stall speed for both the front and rear clutch assemblies should be within 150revs min of each other Ifthe stall speed is not within these limits refer to the diagnosis guide for possible causes 7 With the gearshift lever and power reversing lever in neutral set the engine speed at 600 800 revs min then shift into any gear ratio If the gears clash ei...

Page 28: ...rator s Manual Hydraulic Tests Tachometer Setting 2200 revs min Test temperature oil 82 93 C 180 200 F Torque Converter relief valve 1Obar 101 159 psi Oil temperature converter out Normal operating range 80 90 C 175 193 F Maximum temperature 120 c 284 F Sealant Gasket sealant 82995774 Thread sealant 82995768 Item Description Cooler return pipe union Cooler return pipe elbow Stator support retainin...

Page 29: ... pressure test ports 1 System pressure port 4 Oil temperature converter out port 2 Torque converter in port 5 Oil temperature cooler out port 3 Torque converter out port 6 Lubrication pressure port Left Hand Side View 1 Pressure test port Convertor in 5 11 bar 73 159 psi 05 2003 1 2 ...

Page 30: ...he front and rear cover being welded together form the housing When the engine is running the oil in the converter flows from the impeller 1 to the turbine 2 and back to the impeller through the stator 3 This flow pro duces a maximum torque increase When enough oil flow is developed by the impeller the turbine begins to rotate driving the front input shaft The torque multiplication gradually decre...

Page 31: ...and correct output Replace Check pump output Replace seals Replace Torque Convertor The torque converter is a welded unit and cannot be disassembled The only maintenance performed on the converter other than the stall test is cleaning and visual inspection A commercial torque converter cleaner may be used to clean the converter How ever if a commercial cleaner is not available the converter should...

Page 32: ...41 Nm 30 lbf ft STALL TEST The purpose of this test is to determine if the torque converter and hydraulic clutch assemblies are oper ating satisfactorily For the test to be conclusive the transmission hydraulic pump and pressure regulat ing valve must be operating correctly They can be checked by performing the Line Pressure Test The engine and brakes must also be in good working order 1 Check the...

Page 33: ...gine speed noted in Step 4 stall speed for both the front and rear clutch assemblies should be within 150revs min of each other Ifthe stall speed is not within these limits refer to the diagnosis guide for possible causes 7 With the gearshift lever and power reversing lever in neutral set the engine speed at 600 800 revs min then shift into any gear ratio If the gears clash either the front or rea...

Page 34: ...Testing 15 Shimming procedure 52 SPECIFICATIONS Stall Speeds 95 hp xxxx xxxx revs min 110 hp xxxx xxxx revs min Torque Convertor Ratio Ratio 2 34 1 Gear Ratios Synchronized 4x4 Transmission Forward 1st 4 824 1 Forward 2nd 2 998 1 Forward 3rd 1 408 1 Forward 4th 0 792 1 Lubricant See Operator s Manual Sealant Gasket sealant 82995774 Thread sealant 82995768 Cold Start By pass Valve Spring Reverse 1s...

Page 35: ...Tests Tachometer Setting 2000 revs min Test temperature oil 80 85 C 176 185 F Cold Start Valve For reference only 26 bar 377 psi System Pressure Test 13 7 15 2 bar 198 220 psi Torque Converter 7 11 bar 101 159 psi Reverse Clutch 13 7 15 2 bar 198 220 psi Forward Clutch 13 7 15 2 bar 198 220 psi Four Wheel Drive Drive Supply 13 7 15 2 bar 198 220 psi Cooler Flow Test Oil temperature 80 85 C 176 185...

Page 36: ...SECTION 21 __ TR A N S M IS S 102_ N S P I CHAPTER 7 _ ___ _ _ 33 Apply Loctite 1 05 2003 ...

Page 37: ...ring Compressor Circlip Pliers Feeler Gauges Dial Indicator Bolt 05 2003 SPECIAL TOOLS APPLICATION Counter Shaft Rear Main Shaft and 4WD Bearing Reverse Idler and Front Main Shaft Bearing Front Input Shaft Bearing Rear Input Shaft Bearing Bearing cone removal Pump rod Insertion Tool Shim Adjustment Cover Pump Seal Main Clutches Tool no 380000679 Detent Ball Spring Where applicable Where applicable...

Page 38: ...ower for reverse travel Engage ment of the front and rear clutch is controlled by the operator through the movement of the hand oper ated power reversing lever 1 The gearshift lever 2 is used to select any one of four speeds through an H pattern synchronized gear shift In any gear ratio the operator need only move the shuttle lever to change direction of travel forward or reverse Transmission disc...

Page 39: ... ing The front and rear cover welded together form the housing When the engine is running the oil in the converter flows from the impeller 1 to the turbine 2 and back to the impeller through the stator 3 This flow pro duces a maximum torque increase When enough oil flow is developed by the impeller the turbine begins to rotate driving the front input shaft The torque multiplication gradually decre...

Page 40: ...r bearings Polymer lip seals on the hydraulic pump output and FWD shafts prevent leakage from the sump A breather at the top ofthe filler tube prevents pressure damage to the seals GEAR SHIFT MECHANISM Op 21 136 A mechanical arrangement of shift rails forks and synchronisers allows static or rolling engagement of any of the 4 transmission ratios from a standard H gate pattern lever The synchronise...

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