Komatsu Utility 76243, Operation & Maintenance Manual

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SERVICE PROCEDURE
MAINTENANCE
4-26
CHECK ELECTRICAL INTAKE AIR HEATER
Check before the cold season starts (once a year).
Remove the electric heater from the engine intake manifold and check for wire disconnections and dirt clinging to
it.
When checking and installing the electric heater, replace its gasket with a new one.
CHECK AND ADJUST TRACK TENSION
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.