TM9-2330-372-14&P
TABLE 3-1. OPERATOR TROUBLESHOOTING TABLE-continued
Malfunction
Test or Inspection
Corrective Action
Step 3.
Check connection of air hoses from trailer to towing vehicle.
a. If air hoses are not properly connected (Emergency to Emergency, Service to Service) shut
off towing vehicle air supply at towing vehicle shut-off valve, disconnect air hoses, and
properly reconnect.
b. If air hoses are properly connected and malfunction still exists, notify organizational
maintenance as towing vehicle air filter may be clogged or brakes may be out of adjustment.
8. SLOW APPLICATION OR SLOW RELEASE OF BRAKES.
Check air pressure gage on towing vehicle.
a. If pressure is low, check that drain cock on air reservoir is closed.
b. If air reservoir drain cock is closed, and pressure is low, notify organizational maintenance of
possible clogged air filter on towing vehicle.
9. GRABBING BRAKES.
WARNING
Wear protective goggles when operating drain cock and avoid air blast or eye injury may occur.
Check for moisture in air tank by opening drain cock.
a. If moisture is in tank, allow to drain.
b. If tank is dry and malfunction still exists, notify organizational maintenance as brakes may be
out of adjustment.
10. BRAKES DRAG.
Check parking brake for proper release.
a. If parking brake does not fully release, see Malfunction 5 above for corrective action.
b. If the above procedure fails to correct malfunction, notify organizational maintenance as
brakes may be out of adjustment.
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