Komatsu PC490-11, Installation And Instruction Manual

Page: 418 / 492

EVERY 4500 HOURS MAINTENANCE
Maintenance for every 50, 250 and 500 hours should be performed at the same time.
METHOD FOR CLEANING KDPF
Contact your Komatsu distributor for cleaning of the KDPF.
METHOD FOR CLEANING DEF TANK
Ask your Komatsu distributor for cleaning of the DEF tank.
METHOD FOR CLEANING FUEL DOSER
For cleaning the fuel doser, ask your Komatsu distributor.
CHECK FOR MISSING FUEL SPRAY PREVENTION CAP ON FUEL DOSER PIP-
ING, HARDENING OF RUBBER
Check fuel spray prevention caps (1) and (2) visually or with a finger to see if any of them has slipped off, or the
rubber portion is hardened.
If there is any problem, the replacement must be performed. Ask your Komatsu distributor for replacement.
EVERY 5000 HOURS MAINTENANCE
Maintenance for every 50, 250, 500 and 1000 hours service should be performed at the same time.
METHOD FOR CHANGING OIL IN HYDRAULIC TANK
k k
WARNING
• Immediately after the engine is stopped, its parts and oil are still very hot and may cause burn in-
jury. Accordingly, wait until they have cooled down before starting the work.
• When removing the oil filler cap, the oil may spout 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 maintenance referring to “MAINTENANCE INTER-
VAL FOR HYDRAULIC BREAKER (4-13)”.
Refill capacity: 248 ℓ
Items to be prepared
• Container to receive drained oil
MAINTENANCE PROCEDURE MAINTENANCE
4-78