Komatsu D475A-5E0, Operation & Maintenance Manual

Page: 291 / 405

.
MAINTENANCE
SERVICE PROCEDURE
Inspection and Maintenance Items
Check, maintenance items Content of check, maintenance Guideline for maintenance time
Refrigerant (gas) Charge amount Twice a year (spring, autumn)
Air conditioner condenser Clogged fins Every 500 hours
Compressor Operating condition Every 4000 hours
V-belt Damage, tension Every 250 hours
Blower motor, fan
Operating condition
(does it make abnormal noise?)
When required
Control mechanism Operating condition (does it function normally?) When required
Piping mounts
Mounting condition, looseness at tightening or
connecting portions, leakage of gas, damage
When required
LUBRICATE DOOR HINGE
If the door makes a squeaking noise when it is opened or closed,
spray lubricant in through the split in the hinge bushing.
If the bushing is worn, replace the hinge.
CHECK DOOR LATCH
WARNING
If the control lever is touched by accident during checking, the machine
moves off suddenly, and this may lead to serious injury or death.
Before checking door latch, stop the engine and set the parking brake lever
securely to LOCK position.
Check
Hold the door open-locked, and check that there is still grease
inside the latch. If the amount of grease is low or there is no more
grease, coat the inside of the latch with grease from portion (1).
REMARK
If there is no more grease inside the latch, the movement will
become poor because of dust inside the latch, and the handle may
be stiff when opening the door.
4 - 48