Komatsu PC118MR-8, Operation And Maintenance Manual

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MAINTENANCE
MAINTENANCE PROCEDURES
4-69
MAINTENANCE EVERY 1000 HOURS OF OPERATION 4
Carry out these operations together with those to be performed every 500 HOURS.
CHANGING THE HYDRAULIC OIL FILTER 4
WARNING
q
Soon after the machine has been stopped, the hydraulic oil is very hot and may cause burns; let it cool
down to 40–45° C before changing the filter.
q
The hydraulic system is under pressure; slowly loosen the filler cap to release any residual pressure.
q
Oils, filters, the coolant and the battery are considered special waste and must be collected and
disposed of according to the regulations in force.
q
On machines containing synthetic biodegradable oil type HEES , this must be changed for the first
time after the first 50 hours of operation and successively every 1000 hours.
NOTICE
If the machine is equipped with hydraulic breaker, the hydraulic oil deteriorates much earlier than during
normal bucket operations. For further details on maintenance, see "MAINTENANCE INTERVALS IN CASE
OF USE OF THE HYDRAULIC BREAKER (4-23)".
The filter is positioned on the hydraulic system drain outlet and
it holds the metal pa rticles that c o me off the various
components due to wear.
To replace the filter, proceed as follows:
1. Retract the arm and bucket cylinders completely and lower
the boom until the bucket teeth rest on the ground.
2. Take the safety device lever to LOCK position (L), stop the
engine and eliminate the remaining pressure of the
equipment (moving the commands many times).
WEAM014802