MAINTENANCE PROCEDURES
198
WEAM009300
4.9.1.h CHANGING THE RUBBER TRACKS
WARNING
q This operation must be carried out by two persons. One operator must be seated in the cab and ma-
noeuvre the machine following the signals of the other operator who carries out the change and the ad-
justment.
q The track must be changed with the frame raised from the ground; be careful not to shift any control le-
ver 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 Komat-
su Dealer for the necessary repairs.
IMPORTANT
q 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 Dealer.
REMOVING THE RUBBER TRACK
DANGER
q The grease contained in the hydraulic cylinder is pressu-
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 Dealer.
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 cylin-
der has been removed.
WARNING
q If the resistance met when injecting the grease is exces-
sive, move the machine forward and backward covering a
short distance.
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