B
104
Repair and Service Manual
MECHANICAL BRAKES
Read all of SAFETY and this section before attempting any procedure. Pay particular attention to Notices, Cautions, Warnings and Dangers.
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6.
Install the actuator components, adjuster compo-
nents and brake shoes (See Brake Shoe and Adjuster
Replacement on page 104).
7.
If the brake shoes and drum are not to be replaced,
sand the friction surfaces lightly with an emery cloth
to remove any foreign material.
Be sure that the adjusting screw is
screwed into the star wheel nut until
only 1 - 2 threads are exposed (Ref
Fig. 24). If the brake shoes are replaced, replace the
three brake springs and the adjuster components.
8.
Replace the springs one side at a time, using the
other side as a guide.
9.
Install the brake drum (See Brake Drum Removal
and Installation on page 102).
10. Repeat on the opposite side of vehicle.
11. Adjust the brake pedal free travel.
Backing Plate/Entire Wheel Brake Assembly
Removal and Installation
Tool List
Qty.
Socket, 1/2” ................................................................. 1
Wrench, 1/2” ................................................................ 1
Floor Jack .................................................................... 1
Jack Stands, ................................................................ 2
Torque Wrench, ft. lbs.................................................. 1
1.
Lift and support the rear of the vehicle (See LIFTING
THE VEHICLE on page 9).
2.
Remove the brake drum (See Brake Drum Removal
and Installation on page 102).
3.
Remove the clevis pin securing the brake cable to
the brake lever.
4.
Remove the bolts (7) and lock nuts (8) securing the
wheel brake backing plate to the flange (10) on the
axle tube (Ref Fig. 22).
Fig. 22 Backing Plate Removal and Installation
Installation is the reverse of removal using new lock
nuts. Tighten all hardware to the torque values below.
Brake Shoe and Adjuster Replacement
Tool List
Qty.
Pliers, Needle Nose .....................................................1
Floor Jack ....................................................................1
Jack Stands .................................................................2
Multi-Purpose Grease..............................................A/N
NOTICE: It is recommended that when brake shoes
are replaced, the adjusters and springs also be
replaced. It is good practice to do one side at a time,
using the other side for reference.
1.
Lift and support the rear of the vehicle (See LIFTING
THE VEHICLE on page 9).
2.
Remove the brake drum (See Brake Drum Removal
and Installation on page 102)
3.
Remove the three brake shoe springs (11, 12, 13).
Note the location of the heavy spring and the
adjuster spring (Ref Fig. 23).
4.
Hold the shoe clamp pin (14) and compress and
rotate the shoe clamp (16) 90° to release it from the
shoe clamp pin.
5.
Remove the brake shoes (15), adjuster (20) and
remaining components.
6.
Clean the backing plate with a commercial brake
cleaner and allow to dry completely.
7.
Lubricate the friction points of the shoes and moving
anchor with multi purpose grease (MPG) lubricant
(Ref Fig. 21).
8
7
10
Front of Vehicle
Item
Torque Specification
7
23 - 27 ft. lbs. (31 - 36.5 Nm)
PRELIMINARY
