The fuel spray prevention caps (10 places) on the fuel injection piping and both ends of the high-pressure piping
act to prevent the fuel from coming into contact with high-temperature parts of the engine and causing a fire if
the fuel should leak or spray out.
Check visually and touch by hand to check that there are no missing fuel spray prevention cap, loose bolts or
hardening of the rubber.
If there is any problem, the replacement must be performed. Ask your Komatsu distributor for replacement.
EVERY 4500 HOURS MAINTENANCE
Maintenance for every 100, 250 and 500 hours should be performed at the same time.
REPLACE KCCV HOSE
Ask your Komatsu distributor for replacement of the KCCV hose.
METHOD FOR CLEANING DEF TANK
Ask your Komatsu distributor for cleaning of the DEF tank.
EVERY 5000 HOURS MAINTENANCE
Maintenance for every 100, 250, 500 and 1000 hours service should be performed at the same time.
METHOD FOR CHANGING OIL IN HYDRAULIC TANK
• 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 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 (4-12)”.
Refill capacity: 69 ℓ
Items to be prepared
• Container to catch drained oil
• Socket wrench handle
1.
Swing the upper structure so that the drain plug of the hy-
draulic tank comes to the middle between the right and left
tracks.
2.
Retract the arm and bucket cylinder rods, then lower the
boom to lower the teeth to the ground.
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