AIR BRAKE CHAMBERS REPLACEMENT
Ground Boards Emplaced
Sealant, Silicone (WP 0086 00-3)
Landing Legs Down
Locknuts (WP 0080 00-11)
Universal Joint, Vehicular (WP 0080 00-11)
Semitrailer Disconnected from Prime Mover
Air Brake Reservoirs Drained
General Mechanic's Tool Kit (WP 0077 00-9)
Before performing any maintenance tasks on brake system,
disconnect trailer air lines from towing vehicle and open
draincock to release air pressure from system. Serious
injury may result from failure to do so.
Wear protective goggles when underneath semitrailer and opening
drain valve. Avoid the air stream. Ensure all pressurized air has
been drained from system. Failure to do so could result in injury to
There are six air brake chambers and they are removed and installed the same
way. This procedure covers one air brake chamber.
If slack adjusters cannot be adjusted properly or the hex nut is damaged,
brakes must be caged according to WP 0007 00-14.