2.
Check
that the seals (b) and (c) of the pressure cap (2) are
not deformed nor cracked, and the foreign material such
as the sand is not stuck.
If there is an abnormality, clean or replace the seal.
If the foreign material is stuck, the coolant may be mixed with a significant amount of foreign material. Clean it
according to “METHOD FOR CLEANING INSIDE OF COOLING SYSTEM”.
METHOD FOR CHECKING AND REPLACING RIPPER SHANK
NOTICE
If the wear of the contact face with inside of ripper point at the tip of the ripper shank advances, the
point fixing pin may break due to the load on the ripper point.
1.
Lower the tip of the ripper shank to the ground, and meas-
ure
the minimum clearance (L) between the ripper point
and the point fixing pin.
2.
If the minimum clearance (L) is 0 mm and the ripper point
contacts the point fixing pin, replace the ripper shank.
Ask your Komatsu distributor for replacement of the ripper
shank.
REMARK
When assembling the new ripper shank and the ripper
point, default value of the clearance is 3.1
mm.
CHECKS BEFORE STARTING
For the following items, see OPERA
TION, “METHOD FOR CHECKING BEFORE STARTING”.
• METHOD FOR DRAINING WATER AND SEDIMENT FROM FUEL TANK
• METHOD FOR CHECKING WATER SEPARATOR, DRAINING WATER AND SEDIMENT
• METHOD FOR CHECKING OIL LEVEL IN HYDRAULIC TANK, ADDING OIL
MAINTENANCE PROCEDURE MAINTENANCE
4-46
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