Rear brake drum (page 2 of 2)

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 = 203.20 - 203.33 mm Service limit = 204 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. Check adjuster cam and if necessary set to minimum adjustment position as follows: Lever leading shoe away from wheel cylinder. Move adjuster cam back fully and ease shoe back into position.
2. Apply Molykote 111 grease to brake shoe and spring contact points.
3. Fit brake drum, tighten screws to 7 Nm.

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

4. Fit road wheel(s) and tighten nuts to correct torque. See INFORMATION, Torque wrench settings.
5. Remove stand(s) and lower vehicle.
6. Check handbrake operation, adjust if necessary. See Adjustments.