Komatsu PC118MR-8, Operation And Maintenance Manual

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MAINTENANCE
MAINTENANCE PROCEDURES
4-89
MAINTENANCE EVERY 5000 HOURS OF OPERATION 4
Carry out simultaneously with the maintenance operations scheduled every 100; 250; 500 and 1000 hours.
CHANGING THE HYDRAULIC OIL AND CLEANING THE INTAKE FILTER 4
WARNING
q
Retract the arm and bucket cylinders completely, rest the bucket teeth on the ground and, after
stopping the engine, eliminate the residual pressures from the equipment (by shifting the controls
more than once) and from the tank (by slowly loosening the filler cap).
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 carrying out this maintenance operation.
q
Do not start the engine with empty tank, since this would certainly damage the pump.
q
Immediately clean any area dirty with oil.
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.
CAUTION
On machines containing synthetic biodegradable hydraulic oil type HEES, this must be changed after the
first 500 hours of operation and successively every 2000 hours, and in any case at least once a year.
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)".
1. Turn the turret so that the lower part of the hydraulic oil
tank is not covered by the tracks.
2. Retract the arm and bucket cylinders completely and lower
the boom until the bucket teeth rest on the ground.
3. Lower the blade to the ground.
4. Stop the engine and eliminate the residual pressure from
the work equipment (by shifting the controls more than
once).
5. 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