Table of Contents
Advertisement
MAINTENANCE PROCEDURE
METHOD FOR CHECKING WATER PUMP
Check for play of the pulley, oil leakage, water leakage, and
clogging of weep hole (drain hole) (A). If anything abnormal is
found, ask your Komatsu distributor for disassembly and repair
or replacement.
METHOD FOR CHECKING VIBRATION DAMPER
Ask your Komatsu distributor for inspection of the vibration damper.
METHOD FOR CHECKING STARTING MOTOR
Ask your Komatsu distributor to have the starting motor checked.
If the engine is started frequently, have this inspection performed every 1000 hours.
METHOD FOR REPLACING ACCUMULATOR (FOR CONTROL CIRCUIT)
The accumulator is charged with high-pressure nitrogen gas, so improper operation may cause an ex-
plosion, which will lead to serious injury or death. When handling, always observe the following.
•
The pressure in the hydraulic circuit cannot be completely removed. When removing the hydraulic
equipment, do not stand in the direction that the oil spurts out when performing the operation. In
addition, loosen the bolts slowly when performing the work.
•
Do not disassemble it.
•
Do not bring open flame close to it or do not dispose of it in fire.
•
Do not perform drilling, welding or flame-cutting.
•
Do not hit or roll it, or subject it to any impact.
•
When disposing of it, the gas must be released. Ask your Komatsu distributor to have this work per-
formed.
NOTICE
If the nitrogen gas charge pressure in the accumulator is low and operations are continued, it becomes
impossible to release the remaining pressure inside the hydraulic circuit if a failure occurs on the ma-
chine.
Replace the accumulator every 2 years or every 4000 hours, whichever comes sooner. Ask your Komatsu dis-
tributor for replacement.
4-84
k
k
WARNING
MAINTENANCE
Advertisement
Chapters
Table of Contents
