- Tue Jul 21, 2015 7:44 am
#49511
As mentioned by others, both cam housings must be free to JUST slide on the brake plates.
Both cables must be adequately lubricated, and adjusted so that the compensator beam is sitting square to the pivot.
If you have fitted new Indian shoes, it is advised to check that the Pivots and Cam faces are true and square to each other? (Pattern shoes are often rubbish). Sit the shoes onto the pivot with just one spring to locate the shoes; do both pivots sit flush? Next look at the shoes cam faces and see if they are sitting square onto the cam? Work the brake arm slowly to ensure that the cam is evenly 'wiping' across the face.
Have you deglazed the drum surfaces?
The Cam housing, Cam shafts, and pivots all need a THIN smear of HMP grease...
Have the leading edges of all four shoes been slightly chamfered? (needed to minimize 'grab")
No matter what, all new brake shoes need to be progressively bedded in via series of repeated and controlled stops. Starting from a low speed: 30mph to a complete stop, 50mph to 20mph, 60mph to a stop. Allow to the Hub and linings to cool somewhat between each series stops, and progression of increased speed and applied pressure.
Even so, brake shoes often need some time to fully bed in. Mechanical drum brakes are not like disc brakes and need a wee bit of patience before they become fully effective...
The Shoes that you have bought have NOT been radiused to match you drum, so be prepare for it take a while (a few days) for the linings to bed onto the drums.
