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4.9.8 MAINTENANCE EVERY 2000 HOURS OF OPERATION
Carry out these operations together with those to be performed every 500 HOURS and every 1000 HOURS.
4.9.8.a
CHANGING THE OIL IN THE HYDRAULIC TANK AND CLEANING THE FILTER
To carry out this maintenance operation it is necessary to tilt the cab floor. Carefully follow the instruc-
q
tions given in paragraph "3.2.9 TILTING THE CAB FLOOR (machines with canopy)" or have this opera-
tion carried out by your Komatsu Distributor.
Retract the arm and bucket cylinders completely, rest the bucket teeth on the ground and, after stopping
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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).
Soon after the machine has been stopped, the hydraulic oil is very hot and may cause burns; let it cool
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down to 40–45° C before carrying out this maintenance operation.
Immediately clean any area dirty with oil.
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Oils, filters, the coolant and the battery are considered special waste and must be collected and dis-
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posed of according to the regulations in force.
On machines containing synthetic biodegradable hydraulic
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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.
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.
Shift the safety lever to the "locked" position (L).
6.
Tilt the cab floor (see "3.2.9 TILTING THE CAB FLOOR (ma-
chines with canopy)").
CAUTION
WEAM012405
WARNING
MAINTENANCE PROCEDURES
RKA23090
RKA23010
237
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