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MAINTENANCE
124
Drive Chain and Sprocket Wear
Inspection
Never neglect drive chain maintenance
and always have drive chains installed
by an authorized Triumph dealer.
Use a genuine Triumph supplied drive
chain as specified in the Triumph Parts
Catalog.
The use of non-approved drive chains
may result in a broken drive chain or
may cause the drive chain to jump
off the sprockets leading to loss of
motorcycle control or an accident.
If the sprockets are found to be worn,
always replace the sprockets and drive
chain together.
Replacing worn sprockets without also
replacing the drive chain will lead to
premature wear of the new sprockets.
1.
Measure across 20 links
2.
Weight
Warning
Caution
1
2
To inspect the drive chain and sprocket
wear:
Remove the chain guard.
▼
Stretch the chain taut by hanging a
▼
20 - 40 lb (10 - 20 kg) weight on the
chain.
Measure the length of 20 links on
▼
the straight part of the chain from
pin center of the 1st pin to the pin
center of the 21st pin. Since the
chain may wear unevenly, take
measurements in several places.
If the length exceeds the maximum
▼
service limit of 12.56 in (319 mm), the
chain must be replaced.
Rotate the rear wheel and inspect
▼
the drive chain for damaged rollers,
and loose pins and links.
Also
inspect
▼
unevenly or excessively worn or
damaged teeth.
Worn Tooth
(Engine Sprocket)
(Sprocket wear exaggerated for
illustrative purposes)
ccol
If there is any irregularity, have the
▼
drive chain and/or the sprockets
replaced by an authorized Triumph
dealer.
Reinstall the chain guard, tightening
▼
the fixings to 53 lbf in (6 Nm).
the
sprockets
for
Worn Tooth
(Rear Sprocket)
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