Maeda CC423S-1, Operation Manual

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[6] INSPECTION/ADJUSTMENT OF CRAWLER BELT TENSION
Since the abrasion state of the pins and bushes on the undercarriage changes depending on working
conditions and soil quality, check the tension of the crawler belt at all times, and keep the standard
tension.
Conduct inspection/adjustment on hard level ground.
INSPECTION
1. Set the engine to the low idling and move the machine
forward by the contact length and stop slowly.
2. Put a square timber (3) reaching from the idler (1) to
the upper track roller (2) on the crawler belt.
3. Measure the maximum slack between the upper side
of the rubber track and the lower side of the lumber.
• Reference value for amount of slack
Slack amount a is normal if it is between 5 and 15
mm.
If the tension is not within the standard, make adjustments as below.
ADJUSTMENT
Do not loosen the plug (1) for more than one rotation.
If it is loosened more than one rotation, the plug (1)
can pop out due to the high-pressured grease inside.
Do not loosen any other parts than the plug (1). Also,
make sure you are not facing the mounting direction
of the plug (1).
If the crawler belt is not loosened after performing the
procedures above, ask us or our sales service agency
for repair.