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Inspect for loose bolts using this procedure:
1.
Mark bolt head and the adjacent surface of the track shoe.
2.
Loosen bolt approximately 1/8 of a turn (45°).
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3.
Tighten bolt until the two marks align.
4.
Read the torque at this point. If the torque is below 400 N·m (300 lb-ft), loosen all four bolts and retighten by the torque-turn method. If the torque is higher, it is acceptable.
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