TSE DP20-4H, Owner'S Manual

Page: 188 / 242

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Braking Systems - Hydraulic
Most of the brake components are very similar to those used in
electric brakes, and maintenance is comparable for the hub and
drum, shoes and linings, and bearings. Specific maintenance
activities are as follows:
Wheel Cylinders
Inspect for leaks and smooth operation. Clean with brake cleaner
and flush with fresh brake fluid. Hone or replace as necessary.
Brake Lines
Check for cracks, kinks, or blockage. Flush with fresh brake fluid.
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).