PADS-FRONT BRAKE
REMOVAL
NOTE: Before proceeding, (Refer to 5 - BRAKES - WARNING) (Refer to 5 - BRAKES - CAUTION).
1. Raise and support the vehicle. (Refer to LUBRICATION & MAINTENANCE/HOISTING - STANDARD PROCEDURE)
NOTE: Perform STEP 2 through STEP 5 on each side of the vehicle to complete pad set removal.
2. Remove the wheel mounting nuts (3), then the tire and wheel assembly (1).
NOTE: When removing the caliper guide pin bolts (2, 3) note that one (upper) has a special sleeve on the end. It important that his bolt be installed in the upper mounting hole when the caliper is installed.
3. Remove the two brake caliper guide pin bolts (2, 3).
4. Remove the disc brake caliper (4) from the disc brake adapter bracket (1) and hang it 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 pads (4, 5) from the caliper adapter bracket (2).
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 pads for uneven lining wear. Also inspect for excessive lining deterioration. Check the clearance between the tips of the wear indicators (if equipped) on the pads 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 pads from the vehicle.
Measure brake pad minimum thickness. Brake pads must be replaced when usable material on a brake pad lining measured at its thinnest point measures one millimeter (0.04 inches) or less.
NOTE: It is important to inspect both front and rear brake pads during the same inspection. Typically, front and rear brake pads wear out at the same time.
Replace both disc brake pads (inboard and outboard) at each caliper. It is also necessary to replace the pads on the opposite side of the vehicle as well as the pads failing inspection to maintain proper braking characteristics.
If the brake pad assemblies do not require replacement, be sure to reinstall the brake pads in the original position they were removed from.
INSTALLATION
NOTE: Perform STEP 1 through STEP 5 on each side of the vehicle to complete pad set installation, then proceed to STEP 6.
NOTE: Make sure that the audible wear indicators (if equipped) are placed toward the top when the inboard brake pads are installed on each side of the vehicle.
1. Place the brake pads (4, 5) in the abutment shims (3) clipped into the disc brake caliper adapter bracket (2) as shown. Place the pad with the wear indicator attached on the inboard side (2).
2. Completely retract the caliper piston back into the bore of the caliper.
CAUTION: Use care when installing the caliper (4) onto the adapter bracket (1) to avoid damaging the boots.
3. Install the disc brake caliper over the brake pads on the brake caliper adapter bracket.
NOTE: When installing the caliper guide pin bolts (2, 3) make sure that the one that has a special sleeve on the end is installed in the upper mounting hole.
4. Align the caliper guide pin bolt holes with the adapter bracket. Install the upper (with special sleeve) (2) and lower (3) caliper guide pin bolts. Tighten the guide pin bolts to 43 N·m (32 ft. lbs.).
5. Install the tire and wheel assembly (1) (Refer to 22 - TIRES/WHEELS - INSTALLATION). Install and tighten the wheel mounting nuts (3) to 135 N·m (100 ft. lbs.).
6. Lower the vehicle.
7. Pump the brake pedal several times before moving the vehicle to set the pads to the brake rotor.
8. Check and adjust the brake fluid level in the reservoir (2) 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 pads.