Operation
Printed in U.S.A. 93 50940411/G0219
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, Fig. 85) 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:
• 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.
NOTE:
The sprocket tooth wear gauge is double-
sided; one side is marked “16T” and is used for
checking 16 tooth sprockets, the other side is
marked “17T” and is used for checking 17 tooth
sprockets.
• Sprocket wear is considered excessive if 1/8”
(4mm) of material is worn from any point along
the sprocket tooth profile.
• 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 ser-
vice 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 sur-
face profiles are matched.
Always replace sprocket mounting hardware
when replacing or re-attaching sprockets.
Fig. 85 – Sprocket Tooth Wear Gauge
B
C
C
A
A
B
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