Komatsu Utility PC26MR-3, Operation & Maintenance Manual

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MAINTENANCE PROCEDURES
WEAM009500 215
4.9.5.h DRAINING THE HYDRAULIC OIL TANK
(Only for machines in which synthetic biodegradable oil type HEES is used)
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
Let the oil cool down until it reaches 40÷45°C before carry-
ing out this maintenance operation.
q
Immediately clean any area dirty with oil.
q
Oils, filters, the coolant and the battery are considered spe-
cial waste and must be collected and disposed of accord-
ing to the regulations in force.
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. Open the engine hood and the radiator cover (1). For details,
see paragraph "3.2.7 RADIATOR COVER"
6. Loosen the screws (1), remove the plate (2) and slowly loos-
en the filler cap (F) to release the residual pressure from the
tank.
7. Remove the drain plug (P) and let all the condensate flow out
of the tank. Collect the condensate in a container with suita-
ble capacity.
8. Put back the filler cap (F).
9. Close the radiator housing and the engine bonnet.
IMPORTANT
q
The tank must be drained before starting the engine, with
temperatures exceeding 0°C; when the temperature is be-
low 0°C, the tank must be drained at the end of work or in
any case with the machine at operating temperature, to
prevent the condensate from freezing.