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brake plate hub and lever and remove the brake
plate assembly. The brake
pad is not replaceable
separately. Instead, use a complete brake plate
assembly.
10.
If
necessary, remove the flanged head capscrew
securing the brake lever and hub to the housing.
CAUTION! The brake plate lever is under some
spring loading. Heavy gloves and eye
protection are recommended when removlng
the brake plate lever.
NOTE: Do not use an air wrench on the brake
lever self-tapping screw as thread damage
to the
housing may result.
11. Remove the brake plate and hub assembly from
the housing and disassemble
the seal, or 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. See Figure
94.
Figure 94
12. Complete disassembly of the brake plate by
removing the brake plate screws and the bearing
block.
13. 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
28 mm (1-1/8'") socket.
14. inspect all parts for damage and/or wear and
replace as necessary.
BBC Under Deck Components Assembly
1.
Check to make sure that the brake plate seal is
in good condition, then stretch onto the brake
plate bushing. See Figure 95.
Vacu-Power
ower
55
BRAKE PLATE BUSHING BUSHING
Figure 95
Hook the control link in the slot on the brake lever.
Place the spring and
the bushing onto the brake
rod then slip the bushing and brake rod through
the hole provided in the brake lever. Finally, install
the bushing hub and flanged head self-tapping
screw with washer through the brake lever.
Brake Plate Capscrew Torque:
25.5 N-m (225 in Ibs)
NOTE: If the self-tapping screw strips
the threads
in the housing, do not helicoil, rather, place a
hexnut in the recess provided in the top side of
the deck.
Loosely secure the brake plate, complete with
brake pad to the brake lever and brake hub
as
shown in Figure 96. Note that the carriage bolt
should go through the brake plate first. Secure
with a nylon locknut
but
do not tighten
a t
this
time. This will allow proper alignment
of the idler
pulley later.
Install an idler hub into each side of the
idler
pulley bearing, then slip the belt onto the idler
pulley. Slip the entire assembly between the
brake plate and brake lever. Secure with the
carriage bolt and nylon locknut
as shown in
Figure 96.
Tighten both idler pulley carriage bolts. Make
sure that the idler pulley spins
freely.
Idler Pulley Bolt Torque:
11.33 N-m
(100
in Ibs)
Install the BBC flywheel onto the crankshaft,
making certain that the slots
in the BBC flywheel
align with the tabs on the bottom
of the
self-propel pulley.
BBC System
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