TM 55-2210-223-34
TO 45A2-2-14-22
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
11. BRAKE PIPE PRESSURE DOES NOT REDUCE AT EMERGENCY RATE. (cont)
Step 4. Check to see if automatic brake valve is defective. (Refer to malfunctions 21 and 22.)
Disassemble, clean, and repair or replace automatic brake valve (para 4-11).
12. UNABLE TO RECOVER FROM AN EMERGENCY APPLICATION.
Step 1. Brake is open to atmosphere.
Repair or replace piping.
Step 2. Check to see if double check valve in pipes 9 and 35 is defective.
Disassemble, clean, and repair or replace double check valve (para 3-54).
Step 3. Check to see if A-1 charging cutoff pilot valve is defective. (Refer to malfunction 24.)
Disassemble, clean, and repair or replace A-1 charging cutoff pilot valve (para 4-15).
Step 4. Check to see if automatic brake valve is defective.
Repair automatic brake valve (para 4-11).
Step 5. Check to see if #8 vent valve is stuck open.
Disassemble, clean, and repair #8 vent valve (para 4-14).
13. EMERGENCY APPLICATION OCCURS DURING SERVICE APPLICATION.
Step 1. Check to see if front or rear #8 vent valve is defective.
Disassemble, clean, and repair or replace #8 vent valve (para 4-14).
Step 2. Check to see if brake pipe piping and fittings are leaking.
Locate leakage and tighten or replace piping and/or fittings.
Step 3. Check to see if brake pipe exhaust orifice in automatic brake valve is defective.
Replace exhaust orifice (para 4-11).
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