Komatsu Galeo PC800LC-8, Operation & Maintenance Manual

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MAINTENANCE PROCEDURE
MAINTENANCE
4-28
Order for Tightening
Tighten the bolts in the order shown in the diagram on the right.
After tightening, check that the nut and shoe are in close con-
tact with the link mating surface.
CHECK AND ADJUST TRACK TENSION 4
WARNING
For details of starting the engine and operating the work equipment, see “BEFORE STARTING ENGINE (3-
76)“, “STARTING ENGINE (3-92)“, “AFTER STARTING ENGINE (3-95)“, and “WORK EQUIPMENT CON-
TROLS AND OPERATIONS (3-112)“ in the OPERATION section.
The wear of the pins and bushings on the undercarriage will vary with the working conditions and type of soil, so
inspect the track tension frequently in order to maintain the standard tension.
Stop the machine on firm, horizontal ground when carrying out the inspection and maintenance.
Checking
1. Run the engine at low idle, then move the machine forward
for a distance equal to the track length on ground, and
slowly stop the machine.
2. Place wooden bar (3) on top of the track from No. 2 roller
(1) to No. 3 roller (2).
3. Measure the maximum deflection between bottom surface
of the wooden bar and top surface of the track shoe.
Deflection “a“ should be 10 - 30 mm.
Adjustment
WARNING
There is danger of plug (1) flying out under the high internal 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 dis-
tributor.