Installation

For additional information see Notes, Warnings, and Hints.

Brake Components:

1. Clean the ledge pads on the backing plate. Sand lightly to bare metal.
2. Apply a light coating of caliper slide grease at the points where the brake shoes touch the backing plate.
3. Before installing the rear brake shoes, assemble the parking brake lever on the secondary shoe and secure with the spring washer and retaining clip.

Brake Assembly:

4. Position the brake shoes on the backing plate, and install the hold-down spring pins, springs, and cups using a hold down spring tool. Install the parking brake link, spring, and washer. Connect the parking brake cable to the parking brake lever.

NOTE: For additional information see Brake Spring Removal and Installation Notes.

Installing The Anchor Pin Plate:

5. Install the anchor pin plate. if equipped. Place the cable anchor over the anchor pin with the crimped side toward the backing plate.

Installing Springs:

6. Install the primary shoe-to-anchor spring using a brake spring removal/installation tool.
7. Install the cable guide on the secondary shoe web with the flanged holes fitted into the hole in the secondary shoe web. Thread the cable around the cable guide groove.

NOTICE: Make sure the cable is positioned in this groove, and not between the guide and the shoe web.

8. Install the secondary shoe-to-anchor (long) spring.

NOTICE: Make sure the cable end is not cocked or binding on the anchor pin when installed. All parts should be flat on the anchor pin.

9. Remove the brake cylinder clamp.
10. Apply a long-life grease to the threads and the socket end of the adjusting screw. Turn the adjusting screw into the adjusting pivot nut to the end of the threads and then loosen it one-half turn.

Adjusting Screw Identification:

CAUTION: Install the adjusting screw assembly in the same location from which it was removed. Interchanging the brake shoe adjusting screw assemblies from one side of the vehicle to the other will cause the brake shoes to retract rather than expand each time the automatic adjusting mechanism is operated.

NOTICE: To prevent incorrect installation, the socket end of each adjusting screw is stamped with R or L to indicate their installation on the right or left side of the vehicle. The adjusting pivot nuts can be distinguished by the number of lines machined around the body of the nut. Two lines indicate a right-hand nut; one line indicates a left-hand nut. Another way to identify adjusters is to check thread pitch. The right side adjuster has right-hand threads while the left side adjuster has left-hand threads. The adjuster will also increase in length when the lever is operated if properly installed.

Installing Adjusting Assembly:

11. Place the adjusting socket on the screw and install the assembly between the shoe ends with the adjusting screw nearest the secondary shoe.
12. Hook the cable hook into the hole in the adjusting lever from the outboard plate side. The adjusting levers are also stamped with an R or L to indicate their installation on the right or left hand brake assembly.
13. Place the hooked end of the adjuster spring in the large hole in the primary shoe web. Connect the loop end of the spring to the adjuster lever hole.

Checking Adjustment Lever Operation:

14. Pull the adjuster lever, cable and automatic adjuster spring down toward the rear to engage the pivot hook in the large hole in the secondary shoe web.
15. Check the action of the adjuster by pulling cable toward secondary shoe, activating lever. Lever should snap in behind the next tooth of adjuster. Release cable to return adjuster lever to original position and the adjuster should turn one notch.

If pulling the cable does not produce the action described, or if lever action is sluggish instead of positive and sharp, check the position of the lever on the adjusting screw toothed wheel. The lever should contact the adjusting wheel one tooth above the center line of the adjusting screw. If the contact point is below this center line, the lever will not lock on the teeth in the adjusting screw wheel, and the screw will not be turned as the lever is actuated by the cable.