CONTENTS
Boom-Swing Pedal ..............................................5-4
Auxiliary Pedal (Optional).....................................5-5
Blade Lever..........................................................5-6
Precautions for Blade Operation..........................5-7
Side Frame Extend/Retract Lever........................5-8
Pilot Control Shut-Off Lever...............................5-10
Warming Up Operation......................................5-11
Warming Up In Cold Weather............................5-11
Precautions for Operations................................5-12
Operate Machine Safely.....................................5-12
Operating Backhoe............................................5-13
Grading Operation .............................................5-14
Avoid Driving Bucket Teeth Into Ground............5-14
Avoid Abusive Operation....................................5-14
Avoid Striking with Bucket..................................5-15
Avoid Excavation Using Upperstructure
and/or Boom Swing Power ..........................5-15
Use Correct Track Shoe ....................................5-15
Avoid Other Than Specified Machine
Operations ...................................................5-16
Precautions for Using Bucket Hook...................5-17
Boom Cylinder May Hit Blade ............................5-17
Avoid Hitting Blade With Bucket ........................5-18
Avoid Colliding Blade Against Rocks.................5-18
Avoid Colliding Boom Cylinder With Track ........5-18
Using Rubber Crawler........................................5-19
Hydraulic Breaker (Optional)..............................5-21
Crusher Operation (Optional).............................5-24
Precautions for After Operating the Machine.....5-25
TRANSPORTING
Transporting by Road ..........................................6-1
Trailer Loading/Unloading....................................6-1
Loading ................................................................6-2
Securing the Machine to the Trailer
for Transportation ..........................................6-3
Unloading.............................................................6-4
Lifting Machine with Crane...................................6-5
MAINTENANCE
Procedures...........................................................7-1
Prepare Machine for Inspection/Maintenance .....7-2
Opening/Closing Engine Access Covers .............7-3
Opening/Closing Right Side Covers ....................7-4
Daily Inspection....................................................7-5
Periodic Replacement of Parts ............................7-6
Maintenance Guide..............................................7-7
The Brand Names of Recommended Oils
and Lubricants .............................................7-10
A. Greasing ....................................................7-11
Front Joint pins ............................................7-11
Bucket and Link Pins ...................................7-14
Swing Bearing..............................................7-15
Swing Internal Gear.....................................7-16
Control Lever Universal Joint.......................7-16
B. Engine ......................................................... 7-17
Engine Oil.................................................... 7-17
Change Engine Oil ...................................... 7-17
Replace Engine Oil Filter............................. 7-17
C. Transmission ............................................. 7-19
Travel Reduction Gear................................ 7-19
D. Hydraulic System ........................................7-21
Inspection and Maintenance
of Hydraulic Equipment......................... 7-21
Check Hydraulic Oil Level ........................... 7-22
Drain Hydraulic Oil Tank Sump................... 7-23
Change Hydraulic Oil .................................. 7-24
Clean Suction Filter..................................... 7-26
Replace Full-Flow Filter............................... 7-27
Replace Pilot Filter ...................................... 7-28
Check Hoses and Lines .............................. 7-30
E. Fuel System ................................................ 7-34
Check Water Separator .............................. 7-35
Drain Fuel Tank Sump ................................ 7-35
Replace Fuel Filter ...................................... 7-36
Check Fuel Hoses....................................... 7-37
F. Air Cleaner .................................................. 7-38
Clean the Air Cleaner Element.................... 7-38
Replace the Air Cleaner Elements.............. 7-38
G. Cooling System ........................................... 7-39
Check Coolant Level................................... 7-40
Check and Adjust Fan Belt Tension............ 7-40
Change Coolant .......................................... 7-42
Clean Radiator ............................................ 7-43
H. Electrical System ....................................... 7-44
Batteries ...................................................... 7-44
Replace Fuses ............................................ 7-47
I. Miscellaneous ............................................ 7-48
Check Bucket Teeth for Looseness
and/or Wear .......................................... 7-48
Replace Bucket ......................................... 7-50
Adjust Track Sag (rubber crawler)
and Check for Damage......................... 7-51
Replace Rubber Track ................................ 7-53
Check Track Sag (steel crawler)................. 7-55
Check and Replace Seat Belt ..................... 7-58
Check Bucket Hook (Optional).................... 7-58
Check Injection Nozzle................................ 7-59
Adjust Valve Clearance............................... 7-59
Check and Clean Injection Device .............. 7-59
Measure Engine Compression Pressure .... 7-59
Check Starter and Alternator....................... 7-59
Check Radiator Cap.................................... 7-59
Check Tightening Torque of Bolts and Nuts... 7-60
CONSUMABLE PARTS LIST ......................8-1
MAINTENANCE UNDER SPECIAL
ENVIRONMENTAL CONDITIONS
......9-1
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