Front
BRAKE PADS/SHOES - FRONT - SRT-4REMOVAL
NOTE: Before proceeding, Refer to WARNING/CAUTION.
1. Raise the vehicle.
NOTE: Perform Step 2 through Step 5 on each side of the vehicle to complete shoe set removal.
2. Remove the front tire and wheel assembly.
3. Remove the two brake caliper guide pin bolts (Fig. 26).
4. Remove the disc brake caliper from the disc brake adapter and hang out of the way using wire or a bungee cord. Use care not to overextend the brake hose when doing this.
5. Remove the brake shoes from the disc brake caliper adapter (Fig. 27).
CLEANING
WARNING: DUST AND DIRT ACCUMULATING ON BRAKE PARTS DURING NORMAL USE MAY CONTAIN ASBESTOS FIBERS FROM PRODUCTION OR AFTERMARKET BRAKE LININGS. BREATHING EXCESSIVE CONCENTRATIONS OF ASBESTOS FIBERS CAN CAUSE SERIOUS BODILY HARM. EXERCISE CARE WHEN SERVICING BRAKE PARTS. DO NOT SAND OR GRIND BRAKE LINING UNLESS EQUIPMENT USED IS DESIGNED TO CONTAIN THE DUST RESIDUE. DO NOT CLEAN BRAKE PARTS WITH COMPRESSED AIR OR BY DRY BRUSHING. CLEANING SHOULD BE DONE BY DAMPENING THE BRAKE COMPONENTS WITH A FINE MIST OF WATER, THEN WIPING THE BRAKE COMPONENTS CLEAN WITH A DAMPENED CLOTH. DISPOSE OF CLOTH AND ALL RESIDUE CONTAINING ASBESTOS FIBERS IN AN IMPERMEABLE CONTAINER WITH THE APPROPRIATE LABEL. FOLLOW PRACTICES PRESCRIBED BY THE OCCUPATIONAL SAFETY AND HEALTH ADMINISTRATION (OSHA) AND THE ENVIRONMENTAL PROTECTION AGENCY (EPA) FOR THE HANDLING, PROCESSING, AND DISPOSING OF DUST OR DEBRIS THAT MAY CONTAIN ASBESTOS FIBERS.
INSPECTION
Visually inspect brake shoes (pads) for uneven lining wear. Also inspect for excessive lining deterioration. Check the clearance between the tips of the wear indicators on the shoes (if equipped) and the brake rotors.
If a visual inspection does not adequately determine the condition of the lining, a physical check will be necessary. To check the amount of lining wear, remove the disc brake shoes from the calipers.
Measure each brake shoe. The combined brake shoe and its lining material thickness should be measured at its thinnest point.
For front disc brake shoes, when a set of brake shoes are worn to a thickness of approximately 7.95 mm (5/16 inch), they should be replaced.
Typically, if front shoes are worn out, both fronts and rears need to be replaced. Make sure to check rears.
Replace both disc brake shoes (inboard and outboard) on each caliper. It is necessary to replace the shoes on the opposite side of the vehicle as well as the shoes failing inspection.
If the brake shoe assemblies do not require replacement, be sure to reinstall the brake shoes in the original position they were remove from.
INSTALLATION
NOTE: Perform Step 1 through Step 5 on each side of the vehicle to complete shoe set installation, then proceed to Step 6. Inboard brake shoes are not identical side-to-side. This is due to placement of the audible wear indicator on the end of each inboard shoe. Make sure that the audible wear indicators are placed toward the top when the inboard shoes are installed on each side of the vehicle.
1. Place the brake shoes in the abutment shims clipped into the disc brake caliper adapter as shown (Fig. 27). Place the shoe with the wear indicator attached on the inboard side.
2. Completely retract the caliper piston back into the bore of the caliper.
CAUTION: Use care when installing the caliper onto the disc brake adapter to avoid damaging the boots on the caliper guide pins.
3. Install the disc brake caliper over the brake shoes on the brake caliper adapter. Make sure the springs on the shoes do not get caught in the hole formed into the center of the caliper housing.
4. Align the caliper guide pin bolt holes with the guide pins. Install the caliper guide pin bolts and tighten them to a torque of 35 Nm (26 ft. lbs.) (Fig. 26).
5. Install the tire and wheel assembly. Tighten the wheel mounting nuts to a torque of 135 Nm (100 ft. lbs.).
6. Lower the vehicle.
7. Pump the brake pedal several times before moving the vehicle to set the shoes to the brake rotor.
8. Check and adjust the brake fluid level as necessary.
9. Road test the vehicle and make several stops to wear off any foreign material on the brakes and to seat the brake shoes.