Timing Belt Tension - Brother PR655 Service Manual

Adjustment
[Standard]
The belt slack should be 3.5 to 4.0 mm when pushing the center of the timing belt with a force of 1.96N (200g).
[Adjustment]
1. Remove the 4 screws of the main PCB and the 2 PCB supporters to remove the main PCB.
2. Loosen the screw 1 of the tension pulley.
3. Adjust the tension on the timing belt by moving the position of the motor holder left or right.
4. Tighten the screw 1 of the tension pulley to secure the tension pulley.
5. Attach the main PCB with the 4 screws and the 2 PCB supporters.
1
XC2277001
Push-pull gauge

Timing belt tension

1.96N (200g)
Timing belt tension
Screw, Pan (S/P washer)
M4X10DB
Push-pull gauge (5N)
Timing belt
1
4 - 16
3.5 - 4.0 mm
Tension pulley