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Wheel Cylinders
Inspect for leaks and smooth operation. Clean with brake cleaner and ush with
fresh brake uid. Hone or replace as necessary.
Brake Lines
Check for cracks, kinks, or blockage. Flush with fresh brake uid. Bleed system
to remove all air. Replace as necessary.
Shoes and Linings
A simple visual inspection of your brake linings will tell if they are usable.
Replacement is necessary if the lining is worn (to within 1/16" or less),
contaminated with grease or oil, or abnormally scored or gouged. Hairline heat
cracks are normal in bonded linings and should not be cause for concern. When
replacement is necessary, it is important to replace both shoes on each brake
and both brakes of the same axle. This will help retain the “balance” of your
brakes.
CAUTION
POTENTIAL ASBESTOS DUST HAZARD!
Some older brake linings may contain asbestos dust, which has been
linked to serious or fatal illnesses. Certain precautions need to be
taken when servicing brakes:
1. Avoid creating or breathing dust.
2. Avoid machining, filing or grinding the brake linings.
3. Do not use compressed air or dry brushing for cleaning (dust can
be removed with a damp brush).
After replacement of brake shoes and linings, the brakes must be re-burnished
to seat in the new components. This should be done by applying the brakes 20
to 30 times from an initial speed of 40 m.p.h., slowing the vehicle to 20 m.p.h.
Allow ample time for brakes to cool between applications. This procedure allows
the brake shoes to seat in to the drum surface.
Braking Systems - Hydraulic
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