Komatsu PC45MR-30403, Operation And Maintenance Manual

Page: 398 / 475

EVERY 2000 HOURS MAINTENANCE
Maintenance for every 100, 250, 500 and 1000 hours should be performed at the same time.
METHOD FOR CHANGING OIL IN HYDRAULIC TANK, CLEANING HYDRAULIC
TANK STRAINER
k k
WARNING
• Immediately after the engine is stopped, its parts and oil are still very hot and may cause burn in-
jury.
Wait for the temperature to go down, and then start the work.
• When removing the oil filler cap, the oil may spurt out. Turn it slowly to release the internal pres-
sure, then remove it carefully.
NOTICE
If the machine is equipped with a hydraulic breaker, the hydraulic oil deteriorates faster than in the nor-
mal bucket digging operation. Accordingly, perform the maintenance by referring to “MAINTENANCE IN-
TERVAL FOR HYDRAULIC BREAKER”.
Hydraulic tank refill capacity: 20 ℓ {5.28 U.S.Gal}
Items to be prepared
• Container to catch the drained oil
• Socket wrench handle
1.
Set the machine in the posture shown in the figure.
1) Start the engine.
2) Set the lock lever to FREE position (F).
Be sure to operate the lock lever by the operating por-
tion on the top.
3) Operate the blade control lever to lower the blade to
the ground.
4) Operate the work equipment control lever to swing the
upper structure.
Bring the drain plug at the bottom of the hydraulic tank
to the middle between the left and right tracks.
5) Operate the work equipment control levers, and re-
tract arm cylinder and bucket cylinder to their stroke end (maximum reach posture of arm and bucket).
6) Operate the boom swing control pedal to swing the boom to the center position.
7) Operate the work equipment control lever slowly to the boom LOWER direction, and lower the boom
and make tooth contact to the ground.
MAINTENANCE MAINTENANCE PROCEDURE
4-89