(4) Inspect the inlet valve seat in the body
361. Carrier Trailer Brake Valve Reassembly and
and the exhaust valve seat in the piston
Installation
for grooves, pitting, corrosion, wear, and
a. Reassembly. Reassemble the carrier trailer
other damage. Replace defective body
brake in the reverse of the numerical sequence as
and piston.
instructed on figure 101.
(5) Inspect all parts for cracks, breaks, bends,
b. Installation. Install the carrier trailer brake valve
damaged threads, corrosion, distortion,
on the crane carrier (TM 53810-207-20).
and other damage. Repair or replace
damaged parts as necessary.
Section VIII. CARRIER AIR BRAKE PROTECTION VALVE ASSEMBLY
363. Carrier Air Brake Protection Valve Assembly
362. General
The carrier air brake protection valve assembly and
Removal and Disassembly
the carrier air brake protection control valve assembly
a. Removal.
Remove the carrier air brake
form the carrier air brake protection system. The trailer
protection valve assembly (TM 5-3810-207-20).
service and emergency lines pass through the carrier
b. Disassembly. Disassemble the carrier air brake
protection valve. Should a condition arise resulting in
protection valve assembly in numerical sequence as
air loss from either the carrier or trailer system, with the
illustrated on figure 102.
carrier protection control valve in the "Normal" position,
the carrier protection valve will automatically close the
364. Carrier Air Brake Protection Valve Assembly
air lines leading to the trailer and apply the trailer
Cleaning, Inspection, and Repair
brakes. During the initial charging of the air brake
a. Cleaning. Clean all parts with an approved
system, the carrier air brake protection valve remains
cleaning solvent and dry thoroughly.
closed until 24 pounds per square inch air pressure is
b. Inspection and Repair. Inspect all parts for
reached in the air receiver tanks. Until 24 psi air
excessive wear and damage. Replace or repair all
pressure is developed in the air receiver tanks, no air
defective parts.
pressure is supplied to the trailer through the trailer
emergency brake line. When approximately 24 psi of
365. Carrier Air Brake Protection Valve Assembly
carrier air tank pressure is reached, the carrier
Reassembly and Installation
protection valve opens and remains open, allowing air
a. Reassembly. Reassemble the carrier air brake
pressure to be delivered through the emergency line
protection valve assembly in the reverse of the
charging the trailer air brake system. Normal and
numerical sequence as illustrated on figure 102.
emergency braking functions are maintained as long as
b. Installation.
Install the carrier air brake
carrier air receiver tank pressure is above 24 psi.
protection valve assembly (TM 5-3810-207-20).
Section IX. CARRIER AIR BRAKE PROTECTION CONTROL VALVE ASSEMBLY
of the carrier operator's position. When the protection
366. General
control valve is in the "Normal"' position, the service and
The carrier air brake protection control valve
emergency braking functions of the carrier and the
assembly and the carrier air brake protection valve
trailer brake systems are normal. When the protection
assembly form the carrier air brake protection system.
control valve is in the "Emergency" position, the trailer
Manual control of the protection valve is through the
emergency line is vented to the atmosphere
two-way protection control valve mounted within easy
reach
TAGO 5030A
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