Part No. 4801-5154 Rev 4-08
500 ST Door
Page 17 of 25
9.2
Adjustment of Brake
After extended operation of the brake lever, the brake may become worn. As the brake wears, some
adjustment to the brake is required. Lettered diagrams below correspond to lettered instructions. Follow
instructions to adjust brake:
1. Close door curtain to fully lowered
position.
2. Engage
Brake
lever.
3. Disconnect
electrical power to motor.
4. Remove four Phillips screws (
A
).
5. Remove
cover
(
B
).
6. Straighten the bent tab (
C
) of spider nut.
.
7. Tighten spider nut (
C
) snuggly against
blower wheel. Make sure a tab of
spider nut is aligned with a notch in the
shaft
8. Bend
tab
(
C
) downward into notch of
shaft.
9. Replace
cover
(
B
).
10. Replace four Phillips screws (
A
).
11. Disengage brake lever (
D
).
12. Adjustment complete.
A
B
C
C
D
Summary of Contents for 500 ST
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Page 23: ...Part No 4801 5154 Rev 4 08 500 ST Door Page 23 of 25 ...
Page 24: ...Part No 4801 5154 Rev 4 08 500 ST Door Page 24 of 25 ...
Page 25: ...NOTES ...
