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Page Title:
FRONT AXLE PARKING BRAKES WILL NOT APPLY |
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 TM 9-2320-279-20-1
Troubleshooting Malfunctions (Cent)
2-9.
Test or Inspection
Corrective Action
DUAL AIR BRAKE SYSTEM
FRONT AXLE PARKING BRAKES WILL NOT APPLY
).
N
E
AUXILIARY FRONT BRAKE VALVE
RELAY VALVE
Step 1. Remove cover from auxiliary front brake valve (para 11-21.2). Check air line 536A from
auxiliary front brake valve to service brake relay valve for breaks, kinks, or leaks.
Tighten or replace damaged or leaking line.
Step 2. Apply front axle brakes (TM 9-2320-279-10). Loosen line 788 at inversion valve.
11-2
If no air comes out of inversion valve, replace inversion valve
Step 3. Apply front axle brakes (TM 9-2320-279-10). Loosen line 789 at air brake valve.
11-2 1.2).
If no air comes out of air brake valve, replace air brake valve
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