Komatsu Utility 69001, Operation & Maintenance Manual

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MAINTENANCE
SERVICE PROCEDURE
4-27
12. Drain the coolant from sub-tank (4), clean the inside of the
sub-tank, then add water until the coolant level is between
the FULL and LOW marks.
13. Stop the engine, wait for approx. 3 minutes, then add cool-
ant until the coolant level is near the coolant filler port, and
tighten the cap. Check the coolant level and add coolant if
necessary.
CHECK TRACK SHOE TENSION, ADJUST 4
The wear of pins and bushings on the undercarriage will vary with the working conditions and types of soil. It is
thus necessary to continually inspect the track tension so as to maintain the standard tension.
Carry out the check and adjustment under the same conditions as when operating (on jobsites where the track
becomes clogged with mud, measure with the track clogged with mud).
INSPECTION
Stop the machine on level ground (stop with the transmission in
FORWARD without applying the brake). Then place a straight
bar on the track shoes between the carrier roller and the idler
as shown in the figure, and measure the clearance between
the bar and the grouser at the midpoint. If the clearance (a) is
20 to 30 mm, the tension is standard.
If the track tension is not at the standard value, adjust it in the
following manner.
ADJUSTMENT
WARNING
There is danger of plug (1) flying out under the high inter-
nal pressure of the grease. Never loosen plug (1) more
than 1 turn.
Never loosen any part other than plug (1). Never put your
face in the mounting direction of plug (1).
If the track tension cannot be loosened with the procedure
given here, please contact your Komatsu distributor.