BENDIX A2LS HYD DRUM BRAKES W-PARKING Manual - Página 6
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REMOVAL
BRAKE SHOE REMOVAL
The removal, disassembly, cleaning and reassembly
instructions presented are primarily for reference.
Disassembly, particularly of the wheel cylinders and
expanders, should not be attempted without the proper
maintenance kits on hand. Damage to some parts may
occur as a result of disassembly. Maintenance kits are
available from your local authorized Bendix parts outlet.
1. Park the vehicle on a level surface and prevent vehicle
movement by a means other than with the parking brake.
Shut off engine.
2. Manually cage all hydraulic spring actuators, raise the
axle and remove the wheels and tires using the procedure
recommended by the vehicle manufacturer 's
maintenance manual.
3. Un-adjust the vehicle brake shoes as follows:
A. Remove the rubber grommets from the manual
override access holes marked "ADJ" in the backing
plate (dirtshield), and insert a blunt screwdriver, or
adjusting tool, until it engages the manual override
wheel. Refer to Figure 10.
B. Using the backing plate (dirtshield) as a fulcrum,
Figure 11, turn the override wheel in a CLOCKWISE
direction, as viewed from the override wheel end until
the lining clears the lip in the drum. Watch the lining
through the lining inspection hole, Figure 26.
C. Repeat this procedure with the other brake shoe and
remove the drum. IMPORTANT: Do not apply
service or park brake after drums have been
removed.
COUNTER CLOCKWISE
TO ADJUST UP
CLOCKWISE TO
DE-ADJUST
FIGURE 11 - ADJUSTING ADJUSTER MECHANISM
6
DO NOT ALLOW SPRING END
TO ENGAGE INSIDE HOLE
FIGURE 12 - SHOE RETURN SPRING REMOVAL
SPRING REMOVAL TOOL MADE
FROM 0.375 IN. DIA. TOOL STEEL
A = 3/8 IN. (9.5 mm)
B = 1/2 IN. (12.7 mm)
C = 0.1 IN. (2.54 mm)
D = 0.15 IN. (3.8 mm)
E = 0.2 IN. (5 mm)
FIGURE 13
A
D
C
B
1/8 IN. THK.
3/8 IN. DIA.
1 IN.
E