Service Manual

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 Mower
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 at 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