Komatsu PC22MR-3, Operation & Maintenance Manual

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MAINTENANCE
MAINTENANCE PROCEDURES
4-41
CHANGING THE RUBBER TRACKS 4
WARNING
q
This operation must be carried out by two persons. One operator must be seated in the cab and
manoeuvre the machine following the signals of the other operator who carries out the change and the
adjustment.
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The track must be changed with the frame raised from the ground; be careful not to shift any control
lever while the operator is working.
q
During the change do not remove any component apart from the track.
q
If the track tension cannot be reduced by means of the procedure described above, contact your
Komatsu distributor for the necessary repairs.
NOTICE
It is possible to switch over from rubber to steel tracks. In any case, it is necessary to remove and adjust
the shock absorber of the idler roller. This operation can be performed only by specialized personnel at
any Komatsu distributor.
Installing the rubber tracks
DANGER
q
The grease contained in the hydraulic cylinder is
pressurized. For this reason, do not give the grease
valve (1) more than one turn when loosening it; in fact,
if the valve is loosened excessively it may be pushed
out due to the grease pressure and this is very
dangerous for the operator.
Do not loose any component apart from the valve (1). If
the track tension does not decrease after this
operation, contact your Komatsu distributor.
q
It is extremely dangerous to let the grease out
following any procedure different from the one
indicated below.
q
When installing or removing the tracks, before turning
the sprocket make sure that the grease contained in
the cylinder has been removed.
q
If the resistance met when injecting the grease is
excessive, move the machine forward and backward
covering a short distance.
Stop the machine on a firm and level surface and lower the
equipment to the ground.
WEAM014500