Tools Required
• | J 29840 Brake
Spring Remover and Installer |
• | J 8049 Brake
Spring Remover and Installer |
Removal Procedure
- Raise and support the
vehicle. Refer to
Lifting and Jacking the Vehicle
in General Information.
- Remove the tire and wheel assembly. Refer to
Tire and Wheel Removal and Installation
in Tires and Wheels.
Important: Mark the relationship of the brake drum to the axle flange in order
to ensure proper wheel balance upon assembly.
- Remove the brake drum. If removing the brake drum is difficult, perform
the following steps:
• | Ensure that the parking brake is released. |
• | Back off the parking brake adjustment cable. |
• | Tap gently on the outer rim of the drum and/or around the inner
drum diameter by the spindle. Do not use excessive force, which may deform
the drum. |
- Remove the return springs (26, 27) using J 8049
or J 29840
.
- Remove the hold-down springs (22) and the pins (10).
- Remove the actuator link (28) while lifting up on the actuator
lever (19).
- Remove the following components:
7.1. | The actuator lever (19) |
7.2. | The lever return spring (20) |
7.3. | The actuator lever sleeve (18) |
- Remove the parking brake strut (5) and the strut spring (4).
- Disconnect the parking brake cable.
- Remove the shoe and lining assemblies (29, 17).
- Remove the adjusting screw assembly (21, 23, 24).
- Remove the following components:
12.3. | The parking brake lever |
- Remove the retaining ring (15), the pin (30), and
the parking brake lever (16) from the secondary shoe (17). If
any parts are of doubtful strength or quality due to discoloration from
heat, overstress, or wear, replace the parts.
- Lubricate the 6 contact areas where the brake shoes contact the
backing plate with high temperature silicone brake lubricant.
- Inspect the threads of the adjusting screw for smooth rotation
over the full length of the screw.
Installation Procedure
- Install the parking brake
lever (16) into the secondary shoe (17) with the pin (30)
and the retaining ring (15).
- Install the adjusting
screw assembly (1, 2, 3) and the adjusting screw spring (4).
- Attach the parking brake
cable.
- Install the shoe and lining assemblies (17, 29).
- Install the parking brake strut (5) and the strut spring (4),
by spreading the shoes (17, 29) apart. Verify that the shoes are positioned
correctly:
• | The end without the strut spring (4) should engage the
parking brake lever (16) and the secondary shoe and lining (17). |
• | The end with the strut spring (4) should engage the primary
shoe and lining (29). |
Important: Install the actuator lever sleeve (18) between the secondary
shoe and lining (17) and the actuator lever (19).
- Install the following components:
6.1. | The actuator lever sleeve (18) |
6.2. | The actuator lever (19) |
6.3. | The lever return spring (20) |
- Install the hold-down
pins (10) and the hold-down springs (22).
- Install the actuator link (28) on the hold-down pin (19)
while you hold up on the lever.
- Install the shoe return springs (26, 27) using J 8057
.
- Adjust the drum brakes. Refer to
Drum Brake Adjustment
.
- Install the brake drum. Align the previous marks.
- Adjust the park brake system. Refer to
Park Brake Adjustment
in Park Brake.
- Install the tire and wheel assembly. Refer to
Tire and Wheel Removal and Installation
in Tires and Wheels.
- Remove the safety stands. Lower the vehicle.