Final Drive Belt; Final Drive Belt Tension Inspection - Triumph Thunderbird Commander Handbook

Maintenance and Adjustment

Final Drive Belt

For safety and to prevent excessive wear the
drive belt must be checked, adjusted and
renewed in accordance with scheduled
maintenance requirements. Checking and
adjustment must be carried out more
frequently for extreme conditions such as
salty or heavily gritted roads.
If the drive belt is badly worn or incorrectly
adjusted (either too loose or too tight) the
belt could jump off the drive belt pulleys or
break. Therefore, always replace worn or
damaged drive belts using genuine Triumph
parts supplied by an authorised Triumph
dealer. The drive belt requires no lubrication.
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Final Drive Belt Tension Inspection

Drive belt tension must be measured using
Triumph service tool T3880126, which is
available from your Triumph dealer.
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Service Tool T3880126
1. Load scale - 4.5 kgf (10 lbf) mark
2. O-ring
3. Deflection slider
4. Deflection scale (0.5 mm (0.020 in)
increments)
5. O-ring
6. Belt cradle
7. Load scale (zero position)
Drive belt tension can be measured with the
motorcycle on the side stand, or if available,
on support stand T3880803 (available from
your Triumph dealer). The method of
measurement and adjustment is identical, but
the belt tension specification for each method
is different.
Drive belt tension must be measured with the
drive belt cold (at ambient temperature).
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