2. Remove 2 / 3 of the brake fluid from the master cylinder reservoir using a clean syringe or equivalent. Install the reservoir cap.
3. Raise and safely support the vehicle with jackstands.
4. Mark the relationship of the wheel to the hub and bearing assembly.
5. Remove the tire and wheel assembly.
6. Remove the caliper, as outlined later, and suspend from the strut with a wire hook or suitable piece of wire. Do NOT disconnect the brake hose or allow the caliper to hang from the brake line!
Click image to see an enlarged view
Fig. Fig. 1: Suspend the caliper from the strut with a suitable piece of wire. Do NOT allow the caliper to hang by the brake line
7. Remove the outboard shoe and lining (pad) by using a prytool to disengage the buttons on the shoe from the holes in the caliper housing.
Click image to see an enlarged view
Fig. Fig. 2: Use a prytool to release the outboard pad retaining buttons
Click image to see an enlarged view
Fig. Fig. 3: Remove the outboard brake pad from the caliper
8. Remove the inboard shoe and lining (pad) from the caliper.
Click image to see an enlarged view
Fig. Fig. 4: Slide the inboard pad out, disengaging the retaining clip ears.
Click image to see an enlarged view
Fig. Fig. 5:. And remove the inboard pad from the caliper
9. Before installing new pads, clean the outside surface of the caliper boot with denatured alcohol, or equivalent.
To install:
10. On 1987-90 vehicles, install new sleeves and bushings. Lubricate the sleeves with a light coating of silicone grease before installation. These parts must always be replaced when the pads are replaced. The parts are usually included in the pad replacement kits.
11. Bottom the piston into the caliper bore, using a C-clamp, adjustable pliers, or a tool specifically designed for that purpose. Position the tool over the caliper and piston, tightening it slowly to press the piston into the bore. Be careful not to damage the piston or piston boot.
Click image to see an enlarged view
Fig. Fig. 6: There is a special tool available to compress the caliper piston into its bore (inboard pad installed)
12. After bottoming the piston, use a small plastic or wooden tool to lift the inner edge of the boot next to the piston, and press out any trapped air. Make sure the boot lies flat and that the convolutions are tucked back into place.
Click image to see an enlarged view
Fig. Fig. 7: Carefully lift the edge of the piston boot to release any trapped air
13. Install the inboard pad by snapping the pad retainer spring into the caliper piston. The shoe portion must lay flat against the piston. After installing the shoe and lining (pad), check that the boot is not touching the shoe. If it is, remove the pad and reseat or reposition the boot.
Click image to see an enlarged view
Fig. Fig. 8: Install the inboard pad, making sure the retainer spring is fastened securely in the caliper piston
14. Install the outboard pad with the wear sensor at the trailing edge of the pad during forward wheel rotation. The back of the shoe must lay flat against the caliper.
Click image to see an enlarged view
Fig. Fig. 9: The outboard pad must be installed with the wear sensor at the trailing edge of the pad
Click image to see an enlarged view
Fig. Fig. 10: Exploded view of the disc brake pads and caliper
15. Install the caliper, as outlined later in this section.
16. Install the wheel and tire assembly, then carefully lower the vehicle. Tighten the wheel lug nuts to 100 ft. Lbs. (136 Nm).
17. Fill the master cylinder with the proper amount of brake fluid from a fresh, sealed container. Install the reservoir cap.
18. Apply about 175 lbs. (778 N) of force to the brake pedal, three times, to seat the pads.
Images (Click to make bigger)
SPONSORED LINKS
Saturday, February 5th, 2011 AT 4:34 AM
