Komatsu HD785-5, Operation & Maintenance Manual

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MAINTENANCE
SERVICE PROCEDURE
EVERY 4000 HOURS SERVICE
Carry out the EVERY 100 HOURS MAINTENANCE, EVERY 250 HOURS MAINTENANCE, EVERY 500 HOURS
MAINTENANCE, EVERY 1000 HOURS MAINTENANCE, and EVERY 2000 HOURS MAINTENANCE at the same
time.
CHECK WATER PUMP
Check for play in the pulley, leakage of grease or water, or clogging of the drain hole. If any problem is found, contact
your Komatsu distributor for disassembly and repair or replacement.
CHECK AIR COMPRESSOR
Ask your Komatsu distributor to carry out this work.
CHECK FAN PULLEY AND TENSION PULLEY
Check for play of the pulley and leakage of grease. If any problem is found, please contact your Komatsu distributor.
CHECK VIBRATION DAMPER
There is the possibility of drop in the level of the damper fluid and runout of the concave surface. So, please contact
your Komatsu distributor to inspect or replace.
CHECK INJECTION PUMP RACK RUBBER BOOT, REPLACE
Check the injection pump rack rubber boot for cracks and oil
leakage. If any abnormality is found, please contact your Komatsu
distributor for replacement.
REPLACE INJECTION PUMP SCREEN FILTER
Remove injection pump cap (1), then replace screen filter (2) with
a new part.
The side of the screen filter with the holes is assembled facing the
inside.
Tightening torque of cap (1): 22.1
±
2.45 N
·
m (2.25
±
0.25 kgf
·
m,
16.3
±
1.8lbft)
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