Rear brake drum

REAR BRAKE DRUM

Service repair no - 70.10.03

Remove

1. Raise rear of vehicle.

WARNING: Support on safety stands.

2. Remove road wheel(s).
3. Release handbrake.

4. Remove wheel spacer from rear hub.
5. Remove screw securing brake drum to hub.
6. Loosen brake shoe adjuster.
7. Withdraw brake drum from hub.

Inspect

1. Clean backplate and brake drum with brake cleaning fluid.

WARNING: Do not use an air line to blow dust from brake assembly. Do not use petroleum based fluid as damage will occur to rubber components.

2. Renew brake drum if scored, grooved or cracked.

3. Measure inside diameter of drum at 2 points. Drum internal diameter: New = 177.75 - 177.85 mm Service limit = 179 mm Drum ovality limit = 0.012 mm Renew drum if outside limits.
4. Examine wheel cylinder dust seals for signs of brake fluid leakage, a certain amount of dampness is usual. However, if free fluid is apparent, lift dust seal and check for excessive leakage. Renew wheel cylinder if brake linings have become contaminated.
5. Check wheel cylinder pistons for freedom of movement.

Refit

1. Apply Molycote 111 grease to brake shoe and spring contact points.
2. Fit brake drum, tighten screw to 7 Nm.

NOTE: Clean inside of NEW brake drum with brake cleaning fluid.

3. Fit wheel spacer to rear hub.
4. Fit road wheel and tighten nuts.
5. Remove stand(s) and lower vehicle.
6. Adjust rear brakes. See MAINTENANCEMaintenance.