TM 9-2330-357-14&P
Table 4-2. Organizational Troubleshooting (Con't).
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
Step 2. Coat emergency relay valve with soapy water (Item 9, Appendix E) and check for leaks.
Emergency relay valve is defective and must be replaced (para 4-34) if bubbles form.
Disregard leakage from bleeder valve.
Step 3. Coat fail-safe airbrake chamber with soapy water (Item 9, Appendix E) and check for leaks.
Fail-safe airbrake chamber is defective and must be replaced (para 4-43) if bubbles form.
WARNING
DO NOT handle brakeshoes, brakedrums, or other brake components unless area has
been properly cleaned. There may be asbestos dust on these components which can
be dangerous if you touch it or breathe it. Wear an approved filter mask and gloves.
Never use compressed air or a dry brush to clean brake components. Dust may be
removed using an Industrial-type vacuum cleaner. Clean dust or mud away from brake
components with water and a wet, soft brush or cloth. Failure to follow this warning
may result In serious Illness or death to personnel.
Step 4. Remove wheel and brakedrum, and check for weak, distorted, or broken brakeshoe return
spring.
Replace weak, distorted, or broken brakeshoe return spring (para 4-32).
5. NO BRAKES OR WEAK BRAKES.
Step 1. Check for low air pressure or air leaks.
Repair or replace leaking air lines or connectors (para 4-37).
Step 2. Check emergency relay valve by applying brakes and listening for emergency relay valve to
operate.
Replace emergency relay valve if it does not respond immediately (para 4-34).
Step 3. Check for air pressure in air reservoir by pulling air reservoir drain handle (para 3-9).
Replace emergency relay valve if air is not released from air reservoir (para 4-34).
Step 4. Coat fail safe airbrake chamber and airbrake chamber with soapy water (Item 9, Appendix E),
and check for leaks.
Fail-safe airbrake chamber is defective and must be replaced (para 4-43) if bubbles form.
Airbrake chamber is defective and must be replaced (para 4-42) if bubbles form.
Disregard leakage from bleeder valve.
4-11