5 - 46 BRAKES

removal will be necessary. Remove the shoe and lining assemblies (see Brake Shoe Removal).

Combined shoe and lining thickness should be measured at the thinnest part of the assembly.

When a shoe and lining assembly is worn to a thickness of approximately 7.0 mm (9/32 inch) it should be replaced.

Replace both shoe assemblies (inboard and outboard) on both wheels whenever shoe assemblies on either side are replaced.

If a shoe assembly does not require replacement. Reinstall it, making sure each shoe assembly is returned to its original position on the wheel of the vehicle from which it was removed. (See Brake Shoe Installation).

SERVICE PRECAUTIONS

WARNING: DUST AND DIRT ON BRAKE PARTS GENERATED DURING THE NORMAL USE AND WEAR OF MOTOR VEHICLE BRAKE SYSTEMS CAN CONTAIN ASBESTOS FIBERS. BREATHING EXCESSIVE CONCENTRATIONS OF ASBESTOS FIBERS CAN CAUSE SERIOUS BODILY HARM, SUCH AS ASBESTOSIS AND CANCER. EXTREME CARE SHOULD BE EXERCISED WHILE SERVICING BRAKE ASSEMBLIES OR COMPONENTS.

DO NOT CLEAN BRAKE ASSEMBLIES OR COMPONENTS WITH COMPRESSED AIR OR BY DRY BRUSHING; USE A VACUUM CLEANER SPECIFICALLY RECOMMENDED FOR USE WITH ASBESTOS FIBERS. IF A SUITABLE VACUUM CLEANER IS NOT AVAILABLE, CLEANING SHOULD BE DONE WET USING A WATER DAMPENED CLOTH.

DO NOT CREATE DUST BY SANDING, GRINDING,AND/OR SHAVING BRAKE LININGS OR PADS UNLESS SUCH OPERATION IS DONE WHILE USING PROPERLY EXHAUST VENTILATED EQUIPMENT.

DISPOSE OF ALL DUST AND DIRT SUSPECTED TO CONTAIN ANY ASBESTOS FIBERS IN SEALED BAGS OR CONTAINERS TO MINIMIZE DUST EXPOSURE TO YOURSELF AND OTHERS.

FOLLOW ALL RECOMMENDED PRACTICES PRESCRIBED BY THE OCCUPATIONAL SAFETY AND HEALTH ADMINISTRATION AND THE ENVIRONMENTAL PROTECTION AGENCY. FOR THE HANDLING, PROCESSING, AND DISPOSITION OF DUST OR DIRT WHICH MAY CONTAIN ASBESTOS FIBERS.

Grease or any other foreign material must be kept off the caliper assembly, surfaces of the braking disc and external surfaces of the hub, during service procedures.

Handling the braking disc and caliper should be

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done in such a way as to avoid deformation of the disc and scratching or nicking the brake linings (pads).

During removal and installation of a wheel and tire assembly, use care not to strike the caliper.

Before vehicle is moved after any brake service work, be sure to obtain a firm brake pedal.

BRAKE SHOE REMOVAL

(1)Raise vehicle on jackstands or centered on a

hoist.

(2)Remove rear wheel and tire assemblies.

(3)Remove caliper attaching bolts (Fig. 2).

Fig. 2 Removing Caliper Attaching Bolts

(4) Lift caliper away from adapter rails (Fig. 3).

Fig. 3 Removing Caliper

(5) Remove outboard shoe. By prying the shoe retaining clip over the raised area on the caliper. Then slide the shoe down and off the caliper (Fig. 4).

Fig. 4 Removing Outboard Shoe

(6) Pull inboard shoe away from piston, until the retaining clip is free from the cavity in the piston. (Fig. 5).

Fig. 5 Removing Inboard Shoe

CLEANING AND INSPECTION

Check for piston seal leaks (brake fluid in and around boot area and inboard lining) and for any ruptures of piston dust boot. If the boot is damaged, or fluid leak is visible, disassemble caliper assembly and install a new seal and boot (and piston if scored). Refer to procedure titled Disassembling Caliper.

BRAKE SHOE INSTALLATION

(1)Retract piston.

(2)Install inboard brake shoe by inserting shoe retaining clip into piston cavity. Be sure brake shoe is seated squarely on the face of the piston. (Fig. 6).

Fig. 6 Installing Inboard Shoe

(3) Install outboard shoe by sliding retaining clip over caliper fingers. Be sure the brake shoe is installed on the caliper, so the retaining clip is past the raised area on the caliper fingers (Fig. 7).

Fig. 7 Installing Outboard Shoe

(4)Install lower end of caliper on to adapter. Make sure the lower tabs on the brake shoes and the casting projections on the caliper are under the adapter rail (Fig. 8).

(5)Rotate caliper down over rotor.