Changing The Rubber Tracks - Komatsu PC18MR-3 Operation & Maintenance Manual

MAINTENANCE PROCEDURES
4.9.1.h

CHANGING THE RUBBER TRACKS

This operation must be carried out by two persons. One operator must be seated in the cab and ma-
q
noeuvre the machine following the signals of the other operator who carries out the change and the ad-
justment.
The track must be changed with the frame raised from the ground; be careful not to shift any control le-
q
ver while the operator is working.
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 Komat-
q
su Distributor for the necessary repairs.
IMPORTANT
It is possible to switch over from rubber to steel tracks. However, the idler protection must be removed
q
and the shock absorber, adjusted. This operation can be performed only by specialized personnel at any
Komatsu Distributor.
REMOVING THE RUBBER TRACK
The grease contained in the hydraulic cylinder is pressu-
q
rized. For this reason, do not give the grease valve (1) more
than one turn when loosening it; in fact, if the valve is loos-
ened 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, con-
tact your Komatsu Distributor.
It is extremely dangerous to let the grease out following
q
any procedure different from the one indicated below.
When installing or removing the tracks, before turning the
q
sprocket make sure that the grease contained in the cylin-
der has been removed.
If the resistance met when injecting the grease is exces-
q
sive, move the machine forward and backward covering a
short distance.
224
DANGER
WARNING
WARNING
WEAM012101