Table of Contents
Advertisement
Read all of SAFETY and this section before attempting any procedure. Pay particular attention to Notices, Cautions, Warnings and Dangers.
Figure 20 Checking Parking Brake Latching Pressure
Brake Drum Removal and Installation
Remove the dust cap, to gain access to the castellated
nut (2) and cotter pin (3) (Figure 21).
Front of Vehicle
5
3
2
4
Figure 21 Brake Assembly
Remove the cotter pin (3) and castellated nut.
NOTICE: Do not apply the brake when removing the
nut as the shoes may not fully retract, preventing
removal of the brake drum.
Remove the washer (4).
Slide the brake drum (5) from the axle shaft. If required,
tap the drum with a plastic faced hammer to loosen it from
the axle shaft or use drum puller (P/N 15947G1).
Be careful when raising the adjuster
arm. Excessive force will damage
the adjuster and necessitate both
wheel brake assemblies be replaced.
If the drum does not slide from the brake assembly, the
brake shoes must be retracted. Rotate the hub so that the
653045
Loosen Jam Nut
Spherical Nut
6
Repair and Service Manual
hole in the drum is directly over the brake mechanism.
Use a small straight blade screwdriver to raise the
adjuster arm just above the star wheel.
Loosen the star wheel to retract the brake shoes and
remove the brake drum.
NOTICE: Pay particular attention to the location of
the inner brake drum washer (6) inside the brake
drum. It may be on the axle shaft or attached to the
rear of the drum hub. This washer must be rein-
stalled when the brake is reassembled.
To install the brake drum, clean the axle shaft and the
splines on the brake drum to remove debris and grease.
Apply a small amount of anti-seize compound to the axle
spline.
Install the inner brake drum washer (6) and slide the
brake drum (5) into place (Figure 21).
Make sure the nose of the drum hub is beyond the end of
the axle splines. If not, remove the drum and install one
additional inner brake drum washer (total of two) to obtain
required spacing.
Do not back off the nut to install the
cotter pin.
Install the remaining hardware, Continue to tighten until a
new cotter pin can be installed through the castellated nut
and the hole in the axle. Maximum torque is 140 ft. lbs.
(190 Nm). Install the hardware to the torque value speci-
fied below.
Item
Torque Specification
2
80 - 90 ft. lbs. (108 - 122 Nm)
Wheel Brake Service
Wheel brake service consists of disassembly, cleaning,
inspection, lubrication and reassembly of the wheel
brake. Worn or damaged components must be replaced.
Wheel brake service is required ally as a preventive main-
tenance measure (see SCHEDULED MAINTENANCE
section). The wear rate of brake shoes and required ser-
vice intervals will vary based on usage, terrain and other
conditions.
Remove the brake drum as described in See the Brake
Drum Removal and Installation..
BRAKES
B
53
Advertisement
Table of Contents
