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7.2 Drive belt maintenance
Even though a belt drive generally has a longer service life, you should have it serviced regularly and regularly replace
the components.
1. Check the pulleys for damages like bends or cracks.
2. Check the belt for:
• Broken or missing teeth,
• Cracks at the base of the teeth,
• Frayed belt fibres,
• Deformed and worn teeth.
It is normal that the coat of paint peels off when breaking in the belt.
3. The belt tension should be checked during servicing (see “7.1 Bike servicing“ on page 21).
7.3 Belt tension adjustment
A correct belt tension significantly contributes to a perfect functioning of the belt. If the tension is too low, the belt
may slip; if the tension is too high, it may damage the bearings and lead to reduced performance. Thus, you should
regularly check the belt for proper tension. For more information see the manual of your Gates Carbon Drive. If you
lack experience or if you have any questions or doubts, you should have the belt tension checked by a qualified bicycle
mechanic.
The CPTL comes with an eccentric bottom bracket to adjust the belt tension.
1. Turn the bolt (1) of the left-side eccentric (non-drive side) 3 turns in clockwise direction using a 5mm hex wrench.
Make sure to hold the drive-side bolt in position.
→
The eccentric is released.
2. Insert the hex wrench into one of the holes (2) and turn the eccentric.
→
The more you turn the crank axle in the direction of travel, the higher is the tension of the belt.
3. Turn the clamp bolt (1) anti-clockwise with a 5mm hex wrench once you’ve adjusted the belt tension and tighten it
to a torque of 8 Nm. Make sure to hold the drive-side bolt in position.
→
The eccentric is locked in the adjusted position.
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