Parking Brake Shoe: Service and Repair
1. Remove one wheel nut, mark the wheel relative to the stud, and remove the remaining wheel nuts. Remove the road wheel and tire assembly.
2. Remove the other side road wheel.
3. Remove the caliper and disc assembly.
4. Release the hand brake. Remove the disc securing screw (1) and remove the disc. Taking all necessary safety precautions remove the brake dust from around the caliper area.
5. Align the cut out in the hub to aid removal, fully loosen the adjuster (1) and remove the shoe hold down springs (2).
WARNING: Use of a spring removal tool is recommended. Strong pliers may be used, but there is a risk of both personal injury and loss of components, should the pliers slip.
NOTE: It is necessary to hold a screwdriver against the rear of each spring post to prevent turning.
6. Ease the two shoes (3) complete with adjuster assembly away from the back plate.
7. Remove the adjuster upper return spring (4), brake shoes and lower return spring (5).
Adjuster
1. Dismantle the adjuster assembly. Clean and examine all components for wear or damage, replacing parts as necessary.
2. Reassemble the adjuster, lightly grease the threads using a suitable grease, i.e. a proprietary Mechanical Brake Grease.
3. Ensure that the adjuster is fully closed, i.e. at its shortest length, prior to reassembly of the brake.
Handbrake Operating Mechanism
1. Locate and disconnect the brake cable securing clip (6), ease out the expander assembly and remove the brake cable.
2. Remove the expander assembly together with the rollers (7).
3. Thoroughly clean all the components and examine for wear or damage, renew parts as necessary.
4. Liberally grease the components using a suitable grease, i.e. a proprietary Mechanical Brake Grease and reassemble, referring to Fig. 2.
5. Ensure that the stops are correctly located in their mating slots.
6. Reinstall the brake cable and expander assembly.
Reassembly
1. Lightly grease the shoe tips and back plate contact area.
CAUTION: Do not get any grease onto the lining material. Light surface contamination can be removed with emery cloth, but heavy penetration of grease or fluid will render the material unsuitable for further use and the linings must be replaced.
2. Reinstall the brake shoes with the lower spring in position. Fit the adjuster and upper spring to the brake shoes and secure with the hold down springs.
3. Center the brake shoes (3) and wind out the adjuster (1) until the disc/drum can just be fitted.
4. Install and tighten the disc securing screw to 11-16 Nm (8-11 ft lb).
5. Continue to adjust the shoes until they lock the disc/drum.
6. Ensure that the handbrake lever in the car is fully off and reconnect the hand brake cable to the draw link.
7. Slacken the adjuster until the disc/drum can be rotated without excessive drag. Light running contact is permissible.
8. Install and align the carrier to the vertical link. Tighten the carrier securing bolts to 102-128 Nm (75-94 ft lb), then secure with lock-wire.
9. Place the caliper to the front of the carrier, ensure the caliper piston is fully retracted then fit the brake pads to the caliper.
10. Reposition the caliper/pad assembly to the carrier then fit and tighten the caliper securing bolts to 25-30 Nm (18-22 ft lb).
11. Install and fully seat the dust covers, and the caliper retaining spring.
12. Connect the brake pad sensor harness multi-plug then reposition the plug into the retaining clip.
13. Ensure the harness is correctly routed.
14. Install the wheel/tire assembly, align the wheel with the marked stud, and tighten the securing nuts to [1].
15. Repeat the procedure for the other side brake shoe assembly.
16. Pump the brake pedal several times to center the brake pads.
NOTE: It may be necessary to run the engine to give power assistance to the brake pedal.
WARNING: Application of the brake pedal must be carried out, as the brake will not operate efficiently until the pads are correctly positioned.
[1]
Alloy wheel 88-102 Nm (65-75 ft lb)
Steel wheel 65-85 Nm (48-63 ft lb)