Periodic Inspection
94
22. Checking and adjusting the
crawler
Jack up the chassis and the lower part of transmission
to adjust the gap between the 4th track roller and the
crawler to 12.5±2.5mm.
<Adjusting>
Jack up the machine on a level ground. The jack
capacity must be over 3 tons. Support the chassis
(pipe) , left and right sides of chassis.
Add a buffer (wood plank) between the jack and
transmission
<Adjusting>
1- Remove the adjust nut stopper.
2- Loosen the lock nuts.
3- Turn the adjusting nut to set the gap.
[Precaution]
Do not tension the crawler too tight (gap below 12.5
±
2.5mm)
The crawler will be lengthened within a short time if it is
excessively tensioned. As a result, the gap between the
driving sprocket and the crawler will be widened, and
the crawler iron core may be in contact with the driving
sprocket, causing abnormal wear and damage.
Left side of chassis
Right side of chassis
Gap
Tension
bolt
Adjusting
nut
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