YANMAR ViO70 US EXCAVATOR SERVICE MANUAL – PDF DOWNLOADย
YANMAR VIO70 US EXCAVATOR SERVICE MANUAL – PDF DOWNLOAD:
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YANMAR ViO70 US EXCAVATOR SERVICE MANUAL – PDF DOWNLOADYANMAR ViO70 US EXCAVATOR SERVICE MANUAL – PDF DOWNLOAD
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YANMAR ViO70 US EXCAVATOR SERVICE MANUAL – PDF DOWNLOAD
Correct work means the quickest possible completion of according to the correct procedures and the specified standards.
It is important when conducting certain operations always to bear in mind the equipment, tools, gauges, materials, oil and grease, etc. that you must have ready, as well as items to be checked, adjusted, or disassembled, and cautions to watch out for.
(1) Never attempt servicing while engine is running or immediately after stopping operation. (2) Wear work cloths, safety shoes and helmet. (3) Check the equipment and tools before use. Especially, be sure to check the crane, lifting equipment and tools.
(4) When working together with other persons, allocate everyoneโs share of job, arrange the signals and act in concert with the other persons. (5) The operation of the crane and slinging work must be performed by qualified persons.
(6) Do not enter or pass under the raised load. (7) Lift and support the massive parts by crane before removing the installation bolts. (8) Disconnect cables from battery before repairing the electric system.
(9) Remove the battery when welding the machine. (1) Check the service record of the machine. (That is, check how many months or hours the machine has been used since the preceding overhaul, what was the trouble then and what parts were replaced.)
(2) Have all servicing tools ready, i.e., tools, measuring devices (which have received periodic maintenance), containers, oil & grease, etc. (3) Have the service literature (operation manual, parts catalog, etc.) ready.
(1) Clean the machine before disassembly. (2) Check and record the condition of the machine before disassembly : โข Model, machine number, operation hours โข Reasons for repair, history of repair โข
Contamination of filters โข Fuel and oil condition โข Damage to parts, etc. (3) Place alignment marks on the necessary parts to facilitate reassembly. (4) Clean all the removed parts and new replacement parts and put them in order. (5) Use new seals, split pins, etc. for reassembly.
TABLE OF CONTENTS:
YANMAR ViO70 US EXCAVATOR SERVICE MANUAL – PDF DOWNLOADย
Vio70(US)................................................................................ 1
FOREWORD................................................................................. 2
CONTENTS................................................................................. 3
1 GENERAL CAUTIONS FOR MAINTENANCE WORK.................................................. 5
1-1 Correct Work..................................................................... 6
1-2 Safety Precautions............................................................... 6
1-3 Preparations..................................................................... 6
1-4 Cautions for Disassembly and Reassembly.......................................... 6
1-5 Cautions for Attaching and Detaching Hydrauplic Equipment........................ 7
1-6 Cautions for Attaching and Detaching Hydraulic Piping............................ 7
1-7 Cautions for Handling Seals...................................................... 7
1-8 Correct Installation of Hydraulic Hose........................................... 8
1-9 Specifications of Hydraulic Hose................................................. 10
1-10 Air-Venting of Hydraulic Equipment.............................................. 13
2 TECHNICAL DATA......................................................................... 14
2-1 Specifications................................................................... 15
2-2 External Drawings and Working Ranges............................................. 21
2-2-1 Canopy Type Specifications................................................. 21
2-3 Weight of Main Parts............................................................. 22
2-4 Lifting Capacities............................................................... 23
3 SERVICING STANDARDS.................................................................... 24
3-1 Machine Performance.............................................................. 25
3-2 Engine........................................................................... 29
3-3 Undercarriage.................................................................... 33
3-3-1ใRubber Track Specifications................................................ 33
3-3-2ใSteelใTrack Specifications................................................. 34
3-3-3 Steel & Rubber Track Common Specifications................................. 35
3-4 Control Devices.................................................................. 36
3-5 Hydraulic Equipment.............................................................. 37
3-5-1 Hydraulic Cylinder......................................................... 37
3-6 Work Implement................................................................... 38
3-6-1 Front Attachment........................................................... 38
3-6-2 Blade Moving Device........................................................ 39
3-6-3 Bucket Teeth............................................................... 39
3-7 Torque Specifications............................................................ 40
3-7-1 Machine.................................................................... 40
3-7-2 Engine..................................................................... 42
3-7-3 Tightening Torque of General Bolts and Nuts................................ 42
4 HYDRAULIC SYSTEM....................................................................... 43
4-1 Outline.......................................................................... 44
4-1-1 Function of Control Valve Operation........................................ 47
4-1-2 Additional Operation of Control Valve...................................... 49
4-2 Hydraulic Circuit Schematic...................................................... 50
4-3 Operating Circuit................................................................ 51
4-3-1 Boom....................................................................... 51
4-3-2 Arm........................................................................ 53
4-3-3 Bucket..................................................................... 55
4-3-4 Swing...................................................................... 57
4-3-5 Boom Swing................................................................. 59
4-3-6 Blade...................................................................... 61
4-3-7 Traveling.................................................................. 63
4-3-8 Simultaneous Operation of Travel and Boom/Bucket........................... 65
4-3-9 Simultaneous Operation of Travel and Arm/Boom Swing........................ 67
4-3-10 Simultaneous Operation of Boom-Up and Arm-Down............................ 69
4-3-11 Simultaneous Operation of Boom-Up and Bucket.............................. 71
4-3-12 Simultaneous Operation of Boom-Up and Swing............................... 73
4-3-13 Hydraulic P.T.O........................................................... 75
4-4 Pressure Adjustment.............................................................. 77
4-4-1 Relief Valves.............................................................. 77
4-4-2 Swing Brake Valve.......................................................... 79
4-4-3 Cut-off Valve.............................................................. 80
5 HYDRAULIC EQUIPMENT.................................................................... 82
5-1 Hydraulic Pump................................................................... 83
5-2 Control Valve....................................................................122
5-3 Pilot Valve......................................................................167
5-4 Swing Motor......................................................................194
5-5 Travel Motor.....................................................................227
6 ADJUSTMENT PROCEDURES FOR EACH EQUIPMENT...............................................267
6-1 Electric Equipment of the Machine................................................268
6-1-1 Arrangement of Electrical Equipment and Names of Parts.....................268
6-1-2 Monitor and Alarm Systems..................................................269
6-1-3 Electric Wiring Diagram....................................................273
6-2 Undercarriage....................................................................274
6-2-1 Outline....................................................................274
6-2-2 Major Parts................................................................274
6-2-3 Cautions for Reassembly (Rubber Track).....................................275
6-2-4 Cautions for Reassembly (Steel Track)......................................276
6-2-5 Disassembly and Reassembly of Idler........................................278
6-2-6 Assembly of Idler..........................................................280
6-2-7 Disassembly and Reassembly of Track Roller.................................281
6-2-8 Disassembly and Reassembly of Carrier Roller...............................283
6-3 Controls ........................................................................284
6-3-1 Control Train..............................................................284
6-3-2 Disassembly and Reassembly of Mecahnical Control Linkages..................285
6-3-3 Adjustment of Implements Control Levers....................................287
6-3-4 Adjustment of Travel Levers................................................289
6-3-5 Adjustment of 2-Speed Pedal................................................290
6-3-6 Adjustment of Boom Swing Pedal.............................................291
6-3-7 Adjustment of Blade Lever..................................................292
6-3-8 Adjustment of Lock Lever...................................................293
6-3-9 Adjustment of Engine Speed Control Lever...................................294
6-4 Swing System.....................................................................295
6-4-1 Swing Bearing..............................................................295
6-5 Hydraulic Equipment..............................................................297
6-5-1 Precautions for Removal and Installation,and Assembly of Hydraulic Pump....297
6-5-2 Disassembly and Reassembly of Hydraulic Cylinder...........................305
6-5-3 Swivel Joint...............................................................306
6-5-4 Hydraulic Oil Tank.........................................................310
6-5-5 Hydraulic Piping Layout....................................................312
6-6 Cabin and Cab guard..............................................................322
6-6-1 Weight of Components.......................................................322
6-6-2 Disassembly Procedure for Cab guard........................................323
6-6-3 Reassembly Procedure for Cab guaed.........................................328
6-6-4 Disassembly and Reassembly Procedure for Cabin.............................329
7 PERIODIC INSPECTION AND SERVICING......................................................339
7 List of Periodic Inspection and Servicing..........................................340
8 FUEL,LUBE OIL AND GREASE RECOMMENDED...................................................342
8-1 Fuel,Lube Oil and Grease Recommended by Yanmar...................................343
8-2 Cooling Water Recommended by Yanmar..............................................344
9 TROUBLESHOOTING........................................................................345
9-1 Non-breakdowns...................................................................346
9-1-1 Natural Release of Bucket..................................................346
9-1-2 Discontinuous Arm Movement.................................................346
9-1-3 Thermal Shock of Travel Motor..............................................347
9-1-4 Elongation of Boom Swing Cylinder on 68 degrees Swing......................348
9-1-5 Time Lag on Switching Travel Speed.........................................349
9-1-6 Hydraulic Oil Tank Oil Level Fluctuation Through Temperature Change........350
9-2 Thoubleshooting..................................................................351
9-2-1 Machine and Engine.........................................................351
9-2-2 Electrical Equipment on Panel..............................................372
10 REFERENCE DATA........................................................................381
10-1 Specifications for Attachment...................................................382
DIESEL ENGINE............................................................................383
FOREWORD.............................................................................384
For Safe Servicing...................................................................385
Precautions for Safe Servicing.......................................................386
CONTENTS.............................................................................390
1 GENERAL............................................................................391
1-1 How to Read This Manual.....................................................392
1-2 Precautions for Service Work.................................................394
2 TROUBLESHOOTING....................................................................395
2-1 Quick Reference Table for Troubleshooting....................................396
2-2 Troubleshooting By Measuring Compression Pressure............................399
3 ENGINE BODY........................................................................401
3-1 Oil Inspection...............................................................402
3-2 Cooling Water Inspection.....................................................402
3-3 Inspecting Water Leak from Cooling Water System and Radiator.................402
3-4 Fan Belt Tension Inspection and Adjustment...................................403
3-5 Adjustment the Valve Clearance...............................................404
3-6 Inspecting the Fuel Injection Valve Injection Pressure and Pattern ..........404
3-7 Fuel Injection Timing Inspection and Adjustment..............................408
3-8 Sensor Inspection............................................................409
3-9 Battery Inspection...........................................................410
3-10 Adjustment Operation........................................................412
3-11 Long Storage................................................................413
3-12 Periodic Maintenance Schedule...............................................414
4 ENGINE BODY........................................................................415
4-1 Introduction.................................................................416
4-2 Cylinder Head................................................................417
4-3 Gear Train and Camshaft......................................................425
4-4 Cylinder Block...............................................................430
5 LUBRICATION SYSTEM.................................................................442
5-1 Lubrication System Diagram...................................................443
5-2 Trochoid Pump Components.....................................................443
5-3 Disassembly..................................................................444
5-4 Servicing Points.............................................................444
5-5 Parts Inspection and Measurement.............................................444
6 COOLING SYSTEM.....................................................................445
6-1 Cooling Water System.........................................................446
6-2 Cooling Water Pump Components................................................446
6-3 Disassembly..................................................................447
6-4 Servicing Points.............................................................447
7 FUEL INJECTION PUMP/GOVERNOR.......................................................448
7-1 Introduction.................................................................449
7-2 Fuel Injection Pump..........................................................449
7-3 Fuel Injection Valve.........................................................455
7-4 Fuel Feed Pump...............................................................455
7-5 Governor.....................................................................456
7-6 Special Service Tools for Disassembly/Assembly...............................457
8 STARTING MOTOR.....................................................................458
8-1 Specifications...............................................................459
8-2 Components...................................................................460
8-3 Troubleshooting..............................................................461
8-4 Names of Parts and Disassembly Procedure.....................................462
8-5 Inspection and Maintenance...................................................466
8-6 Service Standards............................................................472
8-7 Assembly.....................................................................473
8-8 Characteristic Test..........................................................475
9 ALTERNATOR.........................................................................476
9-1 Specifications...............................................................477
9-2 Section View.................................................................478
9-3 Troubleshooting..............................................................479
9-4 Parts Names and Disassembly Procedure........................................480
9-5 Inspection and overhaul......................................................483
9-6 Assembly.....................................................................487
9-7 Service Standards............................................................488
9-8 Performance Test.............................................................489
10 SPECIAL SERVICE TOOLS.............................................................490
10-1 Special Tools...............................................................491
10-2 Measuring Instruments.......................................................493
11 SERVICE STANDARDS.................................................................496
11-1 Engine Turning..............................................................497
11-2 Engine Body.................................................................498
11-3 Lubricating Oil System (Trochoid pump)......................................502
11-4 Tightening Torques for Main Parts...........................................503
PLEASE NOTE:
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