BOBCAT B730 & B750 Backhoe Loader Service Manual PDF DOWNLOAD

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BOBCAT B730 & B750 Backhoe Loader Service Manual PDF DOWNLOAD

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BOBCAT B730 & B750 Backhoe Loader Service Manual PDF DOWNLOAD

Language : English
Pages : 856
Downloadable : Yes
File Type : PDF

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TABLE OF CONTENTS:

BOBCAT B730 & B750 Backhoe Loader Service Manual PDF DOWNLOAD

B730 S/N B4B611001 & Above
B750 S/N B4BM11001 & Above

MAINTENANCE SAFETY………………………………………………………………… 3
CONTENTS…………………………………………………………………………. 5
GENERAL INFORMATION……………………………………………………………….. 7
MACHINE INFORMATION……………………………………………………………. 9
B730 Specification…………………………………………………………. 9
B750 Specification…………………………………………………………. 11
TECHNICAL PROPERTIES…………………………………………………………… 13
B730 Specifications………………………………………………………… 13
Engine……………………………………………………………………. 13
Electrical System………………………………………………………….. 13
Hydraulic System…………………………………………………………… 13
Transmission………………………………………………………………. 13
Axle / Brakes……………………………………………………………… 14
Tires…………………………………………………………………….. 14
Loader……………………………………………………………………. 14
Backhoe…………………………………………………………………… 14
Cab / Canopy………………………………………………………………. 14
Steering………………………………………………………………….. 15
Capacities………………………………………………………………… 15
Weights…………………………………………………………………… 15
B750 Specifications………………………………………………………… 16
Engine……………………………………………………………………. 16
Electrical System………………………………………………………….. 16
Hydraulic System…………………………………………………………… 16
Transmission………………………………………………………………. 16
Axle / Brakes……………………………………………………………… 17
Tires…………………………………………………………………….. 17
Loader……………………………………………………………………. 17
Backhoe…………………………………………………………………… 17
Cab / Canopy………………………………………………………………. 17
Steering………………………………………………………………….. 17
Capacities………………………………………………………………… 18
Weights…………………………………………………………………… 18
POSITION OF MACHINE……………………………………………………………. 21
Loader Attachment Position………………………………………………….. 21
Backhoe Attachment Position…………………………………………………. 21
SAFETY INSTRUCTION…………………………………………………………….. 23
General Safety Information………………………………………………….. 24
Crushing And Burning Prevention……………………………………………… 25
Fire And Explosion Prevention……………………………………………….. 25
Hydraulic Lines And Hoses…………………………………………………… 26
STORAGE………………………………………………………………………. 27
Preparing The Machine For Storage……………………………………………. 27
Preparing The Machine For Work After A Long Period Of Storage…………………… 27
LUBRICATION AND MAINTENANCE………………………………………………………… 29
LIFTING AND BLOCKING THE BACKHOE LOADER………………………………………….. 31
Procedure…………………………………………………………………. 31
APPROVED LIFT ARM SUPPORT DEVICE………………………………………………… 33
Description……………………………………………………………….. 33
TOWING THE BACKHOE LOADER………………………………………………………. 35
Procedure…………………………………………………………………. 35
AXLE TOE-IN ADJUSTMENT…………………………………………………………. 37
Procedure…………………………………………………………………. 37
LUBRICATION…………………………………………………………………… 39
General Safety Information………………………………………………….. 39
Lubricant And Operating Materials Specifications………………………………. 40
Diesel Fuel:………………………………………………………………. 41
Engine Coolant…………………………………………………………….. 42
Hydraulic / Hydrostatic Fluid Chart………………………………………….. 43
Brake Oil (For B730 S/N B4B611001 – B4B611134)………………………………… 44
Transmission Fluid…………………………………………………………. 44
Front Axle Oil…………………………………………………………….. 44
Rear Axle Oil……………………………………………………………… 44
Lubrication Chart (B730 And B750)……………………………………………. 45
Diesel Engine……………………………………………………………… 46
Checking The Engine Oil Level……………………………………………….. 46
Draining The Engine Oil…………………………………………………….. 46
Replace The Oil Filter Element………………………………………………. 46
Adding Engine Oil………………………………………………………….. 47
Cooling System…………………………………………………………….. 48
Checking The Coolant Level………………………………………………….. 48
Coolant Reservoir………………………………………………………….. 48
Changing The Coolant……………………………………………………….. 49
Draining Coolant…………………………………………………………… 49
Cleaning The Radiator And Adding Coolant……………………………………… 49
Hydraulic System…………………………………………………………… 50
Check Hydraulic Oil Level…………………………………………………… 50
To Drain Oil………………………………………………………………. 51
Replacing The Internal Hydraulic Filter………………………………………. 51
To Clean The Suction Strainer……………………………………………….. 52
Adding Hydraulic Oil……………………………………………………….. 53
The Fuel System……………………………………………………………. 54
Fuel Specifications………………………………………………………… 54
Biodiesel Blend Fuel……………………………………………………….. 54
Drain The Contaminant From The Fuel Filter……………………………………. 55
Drain The Contaminant From The Fuel Tank……………………………………… 55
Clean Fuel Tank Breather……………………………………………………. 55
Adding Fuel……………………………………………………………….. 56
Transmission………………………………………………………………. 56
Checking Transmission Oil Level……………………………………………… 56
Drain Transmission Oil……………………………………………………… 57
Add Transmission Oil……………………………………………………….. 57
Front Drive Axle And Reduction Gears…………………………………………. 58
To Drain Oil………………………………………………………………. 58
To Add Oil………………………………………………………………… 58
Reduction Gears……………………………………………………………. 59
To Check Reduction Gear Oil Level……………………………………………. 59
To Drain Reduction Gear Oil…………………………………………………. 59
Add Reduction Gear Oil……………………………………………………… 59
Rear Axle…………………………………………………………………. 60
To Check Rear Axle Oil Level………………………………………………… 60
Clean The Rear Axle Breather………………………………………………… 60
Drain Rear Axle Oil………………………………………………………… 60
Add Rear Axle Oil………………………………………………………….. 61
Brake Fluid……………………………………………………………….. 61
Checking Brake Fluid Reservoir Level…………………………………………. 62
Add Brake Oil……………………………………………………………… 62
Draining The Brake System…………………………………………………… 62
Bleeding The Brake System…………………………………………………… 62
Service Schedule…………………………………………………………… 63
AIR CLEANER SERVICE……………………………………………………………. 65
Engine Air Intake System……………………………………………………. 65
Cleaning The Primary Element………………………………………………… 66
Replacing The Air Filter Elements……………………………………………. 67
Cab Air Intake Filter………………………………………………………. 67
BACKHOE BOOM / SWING LOCK………………………………………………………. 69
Engaging And Disengaging……………………………………………………. 69
ENGINE ALTERNATOR / FAN BELT AND AIR CONDITIONER BELT (IF EQUIPPED)…………………. 71
Checking The Fan Belt………………………………………………………. 71
Replacing Fan And Alternator Belt……………………………………………. 71
TIRE MAINTENANCE………………………………………………………………. 73
Maintenance Instruction…………………………………………………….. 73
Type Of Tires……………………………………………………………… 73
To Replace A Wheel…………………………………………………………. 73
Wheel Nut Torque Settings…………………………………………………… 74
LUBRICATION OF THE BACKHOE LOADER……………………………………………….. 75
Lubrication Locations………………………………………………………. 75
HYDRAULIC SYSTEM………………………………………………………………….. 81
HYDRAULIC / HYDROSTATIC SCHEMATICS………………………………………………. 83
HYDRAULIC SYSTEM INFORMATION……………………………………………………. 87
Glossary Of Hydraulic / Hydrostatic Symbols…………………………………… 87
HYDRAULIC SYSTEM………………………………………………………………. 91
Tests and Hydraulic Pressure Test (B730)……………………………………… 91
Tests and Hydraulic Pressure Test (B750)……………………………………… 92
Test Ports………………………………………………………………… 93
Hydraulic Tank And Return Filter…………………………………………….. 94
Fixed Displacement Tandem Pump………………………………………………. 95
Blocks……………………………………………………………………. 96
ON-OFF Solenoid Valve………………………………………………………. 98
ON-OFF Pressure Reducing Valve………………………………………………. 99
Loader Control Valve………………………………………………………..100
Unloading Valve Test………………………………………………………..107
Steering Priority Valve……………………………………………………..108
Backhoe Control Valve……………………………………………………….109
Steering Pressure Test………………………………………………………112
Pilot Pressure Test (B750)…………………………………………………..113
Priority Valve……………………………………………………………..114
RETURN LINE CHECK VALVE…………………………………………………………117
Removal And Installation…………………………………………………….117
HYDRAULIC CYLINDERS…………………………………………………………….119
Basic Type Cylinder Assembly…………………………………………………119
Nut Type Cylinder Montage……………………………………………………126
Loader Lift Cylinder………………………………………………………..130
Loader Bucket (Tilt) Cylinder………………………………………………..133
Clampshell Cylinder…………………………………………………………136
Backhoe Boom Cylinder……………………………………………………….139
Backhoe Arm Cylinder………………………………………………………..142
Backhoe Bucket Cylinder……………………………………………………..145
Backhoe Extendible Arm Cylinder………………………………………………148
Backhoe Swing Cylinder………………………………………………………151
Backhoe Stabilizer Cylinder………………………………………………….154
HYDRAULIC PUMP…………………………………………………………………157
Removal And Installation…………………………………………………….157
BACKHOE CONTROL VALVE (B750)…………………………………………………….159
Removal And Installation…………………………………………………….159
BACKHOE CONTROL VALVE (B730)…………………………………………………….167
Removal And Installation…………………………………………………….167
BOOM CYLINDER………………………………………………………………….173
Removal And Installation…………………………………………………….173
BUCKET CYLINDER………………………………………………………………..175
Removal And Installation…………………………………………………….175
CLAMP CYLINDERS………………………………………………………………..177
Removal And Installation…………………………………………………….177
CLAMSHELL CYLINDER……………………………………………………………..179
Removal And Installation…………………………………………………….179
LIFT CYLINDERS…………………………………………………………………181
Removal And Installation…………………………………………………….181
STABILIZER CYLINDERS……………………………………………………………183
Removal And Installation…………………………………………………….183
STICK CYLINDER…………………………………………………………………185
Removal And Installation…………………………………………………….185
SWING CYLINDERS………………………………………………………………..187
Removal And Installation…………………………………………………….187
TILT CYLINDERS (b750)…………………………………………………………..191
Removal And Installation…………………………………………………….191
TILT CYLINDERS (b730)…………………………………………………………..193
Removal And Installation…………………………………………………….193
BRAKE PEDAL AND BOOSTER…………………………………………………………195
Removal And Installation (B730 S/N B4511155 & Above) (B750 S/N B45211080 & Above)….195
HYDRAULIC RESERVOIR…………………………………………………………….199
Removal And Installation…………………………………………………….199
LOADER CONTROL VALVE (B750)……………………………………………………..203
Removal And Installation…………………………………………………….203
LOADER CONTROL VALVE (B730)……………………………………………………..207
Removal And Installation…………………………………………………….207
STEERING COLUMN AND UNIT………………………………………………………..211
Removal And Installation…………………………………………………….211
ELECTRICAL SYSTEM………………………………………………………………….213
ELECTRICAL SCHEMATICS…………………………………………………………..215
ELECTRICAL SYSTEM – B730………………………………………………………..231
Fuses……………………………………………………………………..231
Relays…………………………………………………………………….232
ELECTRICAL SYSTEM – B750………………………………………………………..233
Fuses……………………………………………………………………..233
Relays…………………………………………………………………….234
ELECTRICAL SYSTEM………………………………………………………………235
Component Location………………………………………………………….235
Component Location – ZF In B730 And B750………………………………………241
BATTERY……………………………………………………………………….245
Removal And Installation…………………………………………………….245
FUSE………………………………………………………………………….247
Fuse Location………………………………………………………………247
RELAY…………………………………………………………………………249
Relay Location……………………………………………………………..249
INSTRUMENT CLUSTERS…………………………………………………………….251
Removal And Installation…………………………………………………….251
AXLES…………………………………………………………………………….257
SAFTEY INSTRUCTIONS…………………………………………………………….259
General Safety Recommendations……………………………………………….259
FRONT AXLE – B730 AND B750………………………………………………………261
Description………………………………………………………………..261
Disassembly………………………………………………………………..262
Reassembly…………………………………………………………………278
FRONT SHAFT……………………………………………………………………313
Removal And Installation…………………………………………………….313
REAR SHAFT…………………………………………………………………….315
Removal And Installation…………………………………………………….315
SAFETY INSTRUCTIONS…………………………………………………………….317
General Safety Recommendations……………………………………………….317
REAR AXLE – B730 AND B750……………………………………………………….319
Preface……………………………………………………………………319
Lubrication And Maintenance Instructions………………………………………320
Service Brake – Brake Wear Measurement On The ZF- Axle MT-B 3070…………………322
Instructions For The Displacement Resp. Emergency Towing Of The Vehicle…………..324
Technical Data……………………………………………………………..325
Disassembly – Output Unit……………………………………………………327
Service Brake (Multi-Disc Brake)……………………………………………..332
Differential……………………………………………………………….335
Disassembly – Input…………………………………………………………340
Disassembly – Parking Brake “Multi-Disc Brake”…………………………………343
Disassembly – Parking Brake “Disc Brake”………………………………………346
Reassembly – Input………………………………………………………….347
Reassembly – Differential……………………………………………………354
Assembly Service Brake (Multi-Disc Brake)……………………………………..363
Reassembly – Output Unit…………………………………………………….371
Parking Brake Version “Multi-Disc Brake”………………………………………376
Reassembly Of Parking Brake Version “Disc Brake”……………………………….383
Completion Of Axle………………………………………………………….386
SERVICE BRAKE………………………………………………………………….389
Description………………………………………………………………..389
Bleeding The Brake Circuitry…………………………………………………390
Test Procedure……………………………………………………………..390
Brake System Troubleshooting…………………………………………………392
TRANSMISSION………………………………………………………………………393
MANUAL USE…………………………………………………………………….395
Maintenance………………………………………………………………..395
Repair…………………………………………………………………….395
Agreements And Definitions…………………………………………………..395
Typographic Agreements………………………………………………………395
Measurements……………………………………………………………….395
General Description…………………………………………………………395
Recommendations For Repair Operations…………………………………………396
Transmission Installation On The Machine………………………………………397
SAFETY INSTRUCTIONS…………………………………………………………….399
General Safety Recommendations……………………………………………….399
TRANSMISSION – B730 AND B750…………………………………………………….401
Serial Number Plate Location…………………………………………………401
Preface……………………………………………………………………401
General……………………………………………………………………402
Schematics…………………………………………………………………403
Measuring Points For Pressure Oil And Temperature………………………………407
Solenoid / Gear Activation…………………………………………………..409
Hydraulic Schematic…………………………………………………………410
Disassembly………………………………………………………………..411
Reassembly…………………………………………………………………450
ENGINE SERVICE…………………………………………………………………….515
GENERAL INFORMATION…………………………………………………………….519
Introduction……………………………………………………………….519
Engine Views……………………………………………………………….520
Engine Identification……………………………………………………….521
Safety Precautions………………………………………………………….522
Engine Lift Equipment……………………………………………………….524
Viton Seals………………………………………………………………..525
POWERPART Recommended Consumable Products……………………………………..526
SPECIFICATIONS…………………………………………………………………529
Basic Engine Data…………………………………………………………..529
Data And Dimensions…………………………………………………………530
Thread Sealant……………………………………………………………..548
Standard Torque Values………………………………………………………549
Specific Torque Values………………………………………………………550
Compression Test Data……………………………………………………….553
CYLINDER HEAD………………………………………………………………….555
General Description…………………………………………………………555
Atomiser Cover……………………………………………………………..555
Rocker Cover……………………………………………………………….556
Rocker Arm…………………………………………………………………558
Valve Tip Clearances………………………………………………………..560
Valve Springs………………………………………………………………561
Removal……………………………………………………………………563
Installation……………………………………………………………….565
Valve And Valve Springs……………………………………………………..568
Valve Guides……………………………………………………………….571
Inspection And To Correct……………………………………………………574
PISTON AND CONNECTING ROD ASSEMBLIES……………………………………………..577
General Description…………………………………………………………577
Big End Bearing…………………………………………………………….578
Piston And Connecting Rod……………………………………………………580
Piston Rings……………………………………………………………….583
Piston And Connecting Rod Assembly……………………………………………584
Piston And Piston Rings……………………………………………………..586
Connecting Rod……………………………………………………………..587
Partially Finished Small End Bush…………………………………………….588
Piston Cooling Jets…………………………………………………………589
CRANKSHAFT ASSEMBLY…………………………………………………………….591
General Description…………………………………………………………591
Crankshaft Pulley…………………………………………………………..592
Rear End Oil Seal Assembly…………………………………………………..593
To Remove And To Fit A Wear Sleeve……………………………………………597
Thrust Washers……………………………………………………………..598
Main Bearings………………………………………………………………601
Crankshaft…………………………………………………………………603
Balancer Unit………………………………………………………………607
TIMING CASE AND DRIVE ASSEMBLY…………………………………………………..611
General Description…………………………………………………………611
Timing Cover……………………………………………………………….612
Mechanical Fuel Pump Gear……………………………………………………614
Electronic Fuel Pump Gear……………………………………………………617
Idler Gear and Hub………………………………………………………….619
Heavy Duty Idler Gear……………………………………………………….622
Camshaft Gear………………………………………………………………624
Front Oil Seal……………………………………………………………..625
Timing Case………………………………………………………………..628
Crankshaft Gear…………………………………………………………….631
Camshaft and Tappets………………………………………………………..632
CYLINDER BLOCK ASSEMBLY…………………………………………………………633
General Description…………………………………………………………633
Cylinder Block……………………………………………………………..633
Cylinder Bore………………………………………………………………635
ENGINE TIMING………………………………………………………………….637
General Description…………………………………………………………637
To Set Number 1 Piston To TDC On The Compression Stroke…………………………638
To Check The Timing Of The Bosch VP30 Fuel Injection Pump……………………….639
To Check The Timing Of The Bosch EPVE Fuel Injection Pump……………………….640
To Adjust The Timing Of The Bosch EPVE Fuel Injection Pump………………………641
To Check The Timing Of The Delphi DP210 Fuel Injection Pump……………………..643
To Check The Valve Timing……………………………………………………644
ASPERATION SYSTEM………………………………………………………………645
General Description…………………………………………………………645
Exhaust Elbow………………………………………………………………646
Turbocharger Side Mount……………………………………………………..647
Turbocharger Faults…………………………………………………………650
Open Engine Breather………………………………………………………..652
Natural Aspirated Engine Breather…………………………………………….653
Closed Engine Breather………………………………………………………654
LUBRICATION SYSTEM……………………………………………………………..655
General Description…………………………………………………………655
Lubrication System Flow Diagram………………………………………………656
Canister Type Oil Filter…………………………………………………….657
Element Type Oil Filter……………………………………………………..658
Filter Head………………………………………………………………..659
Sump………………………………………………………………………660
Dipstick Tube………………………………………………………………662
Oil Strainer And Suction Pipe………………………………………………..663
Lubricating Oil Pump Assembly………………………………………………..664
Relief Valve……………………………………………………………….666
FUEL SYSTEM……………………………………………………………………669
General Description…………………………………………………………669
Cold Start Advance Unit (KSB)………………………………………………..671
Typical Fuel System…………………………………………………………672
Fuel Filter Assembly………………………………………………………..673
Atomizers………………………………………………………………….674
Fuel Lift Pump And Filter Assembly……………………………………………677
Removing Air From The Fuel System…………………………………………….679
Bosch VP30 Fuel Injection Pump……………………………………………….680
Bosch EVPE Fuel Injection Pump……………………………………………….685
Delphi DP210 Fuel Injection Pump……………………………………………..688
COOLING SYSTEM…………………………………………………………………693
General Description…………………………………………………………693
Coolant Flow Diagram………………………………………………………..694
Thermostat…………………………………………………………………695
Coolant Pump……………………………………………………………….698
Fan……………………………………………………………………….702
Fan Drive………………………………………………………………….702
Lubricating Oil Cooler………………………………………………………703
Coolant Bypass Pipe…………………………………………………………705
Oil Cooler / Radiator Removal And Installation…………………………………706
FLYWHEEL AND HOUSING……………………………………………………………709
General Description…………………………………………………………709
Flywheel…………………………………………………………………..709
Ring Gear………………………………………………………………….710
Flywheel Housing……………………………………………………………711
ELECTRICAL SYSTEM………………………………………………………………713
General Description…………………………………………………………713
Alternator…………………………………………………………………713
Starting Aid (Glow Plug)…………………………………………………….719
Electrical Components……………………………………………………….721
Engine Control Module (ECM)………………………………………………….723
Voltage Load Protection Module……………………………………………….725
Programming A New ECM……………………………………………………….726
Speed And Timing Sensor……………………………………………………..727
Pressure Sensor…………………………………………………………….728
Temperature Sensor………………………………………………………….730
Wiring Harness……………………………………………………………..732
AUXILIARY EQUIPMENT…………………………………………………………….739
General Description…………………………………………………………739
Power Steering Pump…………………………………………………………739
Adaptor For A Hydraulic Pump Or A Steering Pump………………………………..739
Exhauster………………………………………………………………….742
SPECIAL TOOLS………………………………………………………………….743
List Of Special Tools……………………………………………………….743
REAR HAND THROTTLE LEVER………………………………………………………..747
Cable Adjustment Procedure…………………………………………………..747
ACCELERATOR PEDAL………………………………………………………………749
Removal And Installation…………………………………………………….749
Cable Adjustment Procedure…………………………………………………..751
EXHAUST……………………………………………………………………….753
Removal And Installation…………………………………………………….753
AIR FILTER…………………………………………………………………….755
Housing Removal And Installation……………………………………………..755
ENGINE………………………………………………………………………..757
Removal And Installation…………………………………………………….757
HEATING, VENTILATION AND AIR CONDITIONING (HVAC)………………………………………765
HVAC UNIT……………………………………………………………………..767
Removal……………………………………………………………………767
Installation……………………………………………………………….773
MAIN FRAME………………………………………………………………………..787
BACKHOE BOOM / SWING LOCK……………………………………………………….789
Removal And Installation…………………………………………………….789
BACKHOE BUCKET TEETH……………………………………………………………791
Removal And Installation…………………………………………………….791
LOADER BUCKET TEETH…………………………………………………………….793
Removal And Installation…………………………………………………….793
BOOM………………………………………………………………………….795
Removal And Installation…………………………………………………….795
CAB (B750)…………………………………………………………………….797
Removal And Installation…………………………………………………….797
CAB (B730)…………………………………………………………………….809
Removal And Installation…………………………………………………….809
COUNTERWEIGHT………………………………………………………………….821
Removal And Installation…………………………………………………….821
ENGINE COVER…………………………………………………………………..823
Removal And Installation…………………………………………………….823
ENGINE SIDE COVERS……………………………………………………………..825
Removal And Installation…………………………………………………….825
FRONT MUDGUARD…………………………………………………………………827
Removal And Installation…………………………………………………….827
PARKING LEVER………………………………………………………………….829
Removal And Installation…………………………………………………….829
FUEL TANK……………………………………………………………………..831
Removal And Installation…………………………………………………….831
GRILL FRAME……………………………………………………………………833
Removal And Installation…………………………………………………….833
GRILL…………………………………………………………………………835
Removal And Installation…………………………………………………….835
KINGPOST………………………………………………………………………837
Removal And Installation…………………………………………………….837
SIDE SHIFT…………………………………………………………………….841
Removal And Installation…………………………………………………….841
STICK…………………………………………………………………………843
Removal And Installation…………………………………………………….843
FRONT CONSOLE………………………………………………………………….847
Removal And Installation…………………………………………………….847
STABILIZER WEAR PADS……………………………………………………………851
Adjustment…………………………………………………………………851
ALPHABETICAL INDEX…………………………………………………………………853

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