CONTENTS
Parking and Stopping on a Slope........................ 4-8
Parking the Machine............................................ 4-8
OPERATING THE MACHINE
Control Lever (ISO Excavator Pattern)................ 5-1
Control Lever (SAE-Backhoe Pattern) ................ 5-2
Shifting the Control Lever Control Pattern........... 5-3
Boom-Swing Pedal ............................................ 5-4
Optional Pedal..................................................... 5-5
Blade Lever ......................................................... 5-7
Pilot Control Shut-Off Lever ................................ 5-8
Warming Up Operation ..................................... 5-10
Warming Up in Cold Weather........................... 5-10
Precautions for Operations ............................... 5-11
Avoid Tipping..................................................... 5-12
Operating Backhoe............................................ 5-13
Grading Operation............................................. 5-14
Avoid Abusive Operation................................... 5-14
Select Correct Track Shoes .............................. 5-15
Operating Tips................................................... 5-15
Object Handling --- If Equipped......................... 5-16
Avoid Hitting Blade with Front Attachment........ 5-17
Avoid Hitting Blade with Bucket......................... 5-17
Avoid Striking the Blade into a Rock ................. 5-17
Boom Cylinder May Hit Track............................ 5-18
Precautions for Installing Wide Bucket
or Special Type Bucket ............................... 5-18
Operate the Machine Safely.............................. 5-19
Using Rubber Crawler....................................... 5-20
Traveling and Other Cautions ........................... 5-21
Emergency Stop Procedure to
Lower Front Attachment.............................. 5-22
Hydraulic Breaker Operating Tips
--- Optional .................................................. 5-23
Replacement of Hydraulic Oil
and Filter Element....................................... 5-25
Operating Hydraulic Crusher --- If Equipped..... 5-26
After Finishing Work.......................................... 5-27
TRANSPORTING
Transporting by Road.......................................... 6-1
Transporting the Machine by Truck..................... 6-1
Precautions for Transporting Machines
with Rubber Tracks ....................................... 6-3
Lifting the Entire Machine with a Crane............... 6-5
MAINTENANCE
Correct Maintenance and
Inspection Procedures .................................. 7-1
Service Your Machine at Specified Intervals....... 7-2
Check the Hour Meter Regularly......................... 7-2
Prepare Machine for Maintenance ...................... 7-3
Hood and Access Covers.................................... 7-4
Daily Inspection ................................................... 7-5
Daily Inspection Check List ................................. 7-6
Periodic Replacement of Parts............................ 7-7
Maintenance Guide..............................................7-8
The Brand Names of Recommended
Oils and Lubricants......................................7-10
A. Greasing ......................................................7-11
Front Joint Pins............................................7-11
Bucket and Link Pins...................................7-13
Precautions for Front Attachment and
Blade Removal.......................................7-13
Swing Bearing..............................................7-14
Swing Internal Gear.....................................7-15
Control Lever Universal Joint.......................7-16
B. Engine..........................................................7-17
Engine Oil Level...........................................7-17
Change Engine Oil.......................................7-18
Replace Engine Oil Filters ...........................7-18
C. Transmission...............................................7-20
D. Hydraulic System.........................................7-22
Inspection and Maintenance of
Hydraulic Equipment..............................7-22
Check Hydraulic Oil Level............................7-23
Drain Hydraulic Tank Sump.........................7-24
Change Hydraulic Oil...................................7-25
Replace Hydraulic Oil Tank Filter................7-29
Check Hoses and Lines...............................7-34
E. Fuel System.................................................7-38
Drain Fuel Tank Sump.................................7-39
Check Water Separator...............................7-40
Replace Fuel Filter.......................................7-41
F. Air Cleaner...................................................7-42
Clean the Air Cleaner Element....................7-42
G. Cooling System............................................7-44
Check Coolant Level ...................................7-45
Check and Adjust Fan Belt Tension ............7-46
Change Coolant...........................................7-47
Clean Radiator Core....................................7-49
H. Electrical System .........................................7-50
Replacing Fuses..........................................7-52
Electical Socket ...........................................7-53
I. Miscellaneous..............................................7-54
Check Bucket Teeth....................................7-54
Replace Bucket ...........................................7-56
Adjusting Bucket Linkage ............................7-57
Check Track Sag (rubber crawler) ..............7-58
Replace Rubber Track.................................7-60
Check Track Sag (steel crawler) .................7-61
Check and Replace Seat Belt......................7-64
Check Fuel Injection Nozzles ......................7-64
Check and Adjust Valve Clearance.............7-64
Check Injection Timing ................................7-65
Measure Engine Compression pressure .....7-65
Check Starter and Alternator.......................7-65
Check Radiator Cap ....................................7-65
Check Tightening Torque of
Bolts and Nuts .......................................7-66
Often-Replaced Parts ........................................7-69
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