Sprocket Tooth Wear and Track Life Worn sprockets are a typical cause of track damage and abnormal track noise. Check for sprocket wear often. Sprocket wear (B) normally occurs along the sides and crests of the sprocket teeth (C). Use the sprocket tooth wear gauge (A - Manitou part # 50309811), included with the machine, to determine exact sprocket tooth wear:
B
A
C
B
C
A
Figure 59 – Sprocket Tooth Wear Gauge
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Hold the sprocket tooth wear gauge (A) against the sprocket teeth at the centerline of the sprocket as shown in the photograph. Wear gauge (A) has the same profile as the teeth on a new sprocket.
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Sprocket wear is considered excessive if 1/8” (4mm) of material is worn from any point along the sprocket tooth profile.
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Sprocket wear is considered excessive if 1/8” (4mm) of material is worn from any point along the sprocket tooth profile.
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Worn sprockets cannot be repaired and should be replaced. Refer to the parts manual for your machine for sprocket service part numbers when ordering. Rotating sprockets by swapping them from one side to the other can extend their service life, provided the wear is limited to one direction of travel.
Important: New tracks perform better and last longer with new sprockets because the mating surface profiles are matched.
CAUTION 95
Always replace sprocket mounting hardware when replacing or re-attaching sprockets. 50950264/D0819