GRACE MX Manual 2013 Page | 69
Tensioning and aligning the drive belt
The Gates carbon drive belt is very resilient and durable. However, before and during its
installation, extreme caution must be exercised in order to avoid damaging the carbon
fibres, which constitute the actual strength of the drive belt. Excessive bending and twisting
could cause tears that can lead to a defect in the belt, if it is under great strain.
Please take note of instructions for proper handling of the belt of the Gates
CARBON DRIVE system
If the tension of the drive belt is set too low, this can lead to the drive belt’s
slipping on the sprockets.
In this way, the carbon fibres on the inside of the drive belt can be damaged.
If the drive belt has slipped, you should have it replaced at a qualified
specialist workshop.
If the tension of the drive belt is too high, bearings and seals in the wheel hub
can be damaged. In addition, the whole drive belt is affected by greater loss
due to wear and friction.
Loosen the 4 Allen head screws at the drop out on the right and left side and the screw of
the braking torque support. (SW5)
Tighten the belt tensioners on both dropouts
with a (10 mm) open-end spanner until the belt
has the proper tension. The adjustment screw
can be secured by using a wrench SW10.
Press down the top of the belt in the middle
between the front and rear sprockets with your
finger.
The belt is correctly tensioned, if it can be
pressed down approximately 12 mm with the
pressure indicated.
