Section LIX. CARRIER AIR BRAKE PROTECTION VALVE ASSEMBLY
522. General
The carrier air brake protection valve assembly and
the carrier air brake protection control valve assembly
form the carrier air brake protection system. The trailer
service and emergency lines pass through the carrier
protection valve. Should a condition arise resulting in the
air loss from either the carrier or trailer system, with the
carrier protection control valve in the NORMAL position,
the carrier protection valve will automatically close the air
lines leading to the trailer and apply the trailer brakes.
523. Carrier Air Brake Protection Valve Assembly
Removal and Disassembly
a. Removal. Remove the carrier air brake protection
valve assembly (para. 236).
b. Disassembly. Disassemble the carrier air brake
protection valve assembly in numerical sequence as
illustrated on figure 255.
524. Carrier Air Brake Protection Valve Assembly
Cleaning, Inspection, and Repair
a. Cleaning. Clean all parts with an approved
cleaning solvent and dry thoroughly.
b. Inspection and Repair. Inspect all parts for
excessive wear and damage. Replace or repair all
defective parts.
525. Carrier Air Brake Protection Volvo Assembly
Reassembly and Installation
a. Reassembly. Reassemble the carrier air brake
protection valve assembly in the reverse of the numerical
sequence as illustrated on figure 255.
b. Installation. Install the carrier air brake protection
valve assembly (para. 236).
Figure 255. Carrier air brake protection valve
assembly
AGO 6819A
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