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TRD-54-T (22.5)
Maintenance
2.7 Brake System
An air brake system is installed on your trailer. The front and rear axles (tandem) or
center and rear axles (triple) have brake cylinders with spring brake chambers. Vehicle
safety is enhanced through the use of an Anti-Lock Braking System (ABS) that controls
the brakes on the front axle (tandem) or center axle (triple). Automatic slack adjusters
are used so that optimal braking effectiveness is maintained throughout the life of the
linings.
ASBESTOS DUST HAZARD!
Since some brake shoe friction materials contain asbestos, certain pre-
cautions 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.)
RISK OF PERSONAL INJURY!
Whenever it becomes necessary to jack the trailer it is up to you to
ensure that the trailer or axle is supported securely. Use blocks or jack
stands on solid ground, especially if you are going to be working under
the trailer.
Preventive Maintenance
1. Every three months or 25,000 miles check the condition of the foundation brakes,
including drums, shoes and linings, cams, rollers, bushings, etc.
2. Check for structural damage of the housing, worn clevis, worn clevis bushings
and condition of the boots for cuts or tears. Replace if necessary.
3. After allowing the brake drums to cool to room temperature, check for correct
chamber stroke as follows:
CAUTION
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CAUTION
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