BBC / BOS / BCS
7.
8.
Again, pivot the brake plate counterclockwise and
remove the BBC flywheel.
11. Remove the brake plate and hub assembly from the
housing and disassemble the seal/oil impregnated
bushing, the hub, self-tapping capscrew, and washer
from the brake lever. Be careful not to lose the
plastic bushing which fits on the end of the brake
spring rod (Fig. 172).
BBC Belt or Idler Pulley Replacement: If the BBC
belt or idler pulley requires replacement, it can be
done without removal of the brake plate. Remove
the idler pulley capscrew and nylon locknut then
pull the belt and pulley from the brake plate as an
assembly.
Note: The hubs of the pulley are replaceable,
however, the bearing inside the idler pulley is
not replaceable separately.
9.
If the brake pad has reached its service life or if the
brake plate has been damaged, remove the other
capscrew securing the brake plate to the brake plate
hub and lever and remove the brake plate assembly.
The brake pad is not replaceable separately.
B
A
10.
If necessary, remove the flanged head capscrew
securing the brake lever and hub to the housing.
CAUTION! The brake plate lever is under
moderate spring-loading. Heavy gloves and eye
protection are recommended when removing the
brake plate lever.
Fig 172
3428-0106
A. Plastic bushing
B. Brake rod
Note: Do not use an air wrench on the brake lever
self-tapping screw as thread damage to the
housing may result.
12. Complete disassembly of the brake plate by
removing the brake plate screws and the bearing
block.
13.
14.
Remove the two bearings from the bearing block by
pressing the bearings out on an arbor press. Press
only on the outer race to prevent bearing damage
(use an appropriately sized arbor or a 1-1/8” (28mm)
socket.
Inspect all parts for damage and/or wear and replace
as necessary.
6-16
WPM Drive Systems Manual
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| Language | English |
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