Drum brake maintenance
Drum brake linings should be inspected every 20,000 km for wear. Riveted linings must be renewed, before the friction lining has worn down to the heads of the rivets. Bonded linings must be replaced, when the remaining lining thickness reaches 2 mm. The complete brake should be inspected, whenever the drums are removed. Worn drums must be replaced by new drums.
The manual adjustment system must be undamaged and must move freely. Wheel cylinders must be checked for damage and leaks and replaced if necessary. The return springs should be replaced every time the shoes are replaced. When carrying out cleaning work, use only brake cleaning fluid or pure methyl alcohol. Never use petrol or paraffin.