TM 10-4610-239-24
TM 08580B-24/3
operation or maintenance of the ROWPU group or its assemblies. Perform the tests/inspections and corrective
actions in the order listed.
NOTE
This manual cannot list all malfunctions that may occur, nor all
tests or inspections and corrective actions. If a malfunction is
not listed or is not corrected by listed corrective actions, notify
your supervisor.
Table 2-2. Unit Troubleshooting
Malfunction
Test or Inspection
Corrective Action
AIRBRAKE SYSTEM
NOTE
Connect trailer coupling halves to towing vehicle with towing vehicle running.
Ensure that towing vehicle brakes are operating properly.
Refer to figure 2-3 for airbrake system support diagram.
1. POOR OR NO BRAKING ACTION
Step 1.
Check all compressed air system tubes, fittings, and components for leaking air.
If compressed air system is not losing air pressure, go to step 2.
If compressed air tube or fitting is leaking air, repair airbrake system tubing. Refer to
If coupling half is leaking air, repair brake line air filter. Refer to paragraph 2-49.
If brake line air filter is leaking air, repair brake line air filter. Refer to paragraph 2-
55.
If reservoir is leaking air, replace reservoir. Refer to paragraph 2-50. If reservoir
drain cock is leaking air, replace reservoir drain cock. Refer to paragraph 2-51.
If air chamber assembly is leaking air, replace air chamber assembly.
Refer to
If airbrake relay valve is leaking air, repair airbrake, relay valve. Refer to paragraph
2-20
