TM 9-2330-390-14&P
Table 3-1. Operator/Crew Troubleshooting (Con't).
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
7. BRAKES DO NOT RELEASE.
Step 1.
Check air gage in towing vehicle to ensure that adequate air pressure has been built. Air gage
should read at least 80 psi (552 kPa).
If air gage reading is low, notify Unit Maintenance.
Step 2.
Check air valves at rear of towing vehicle to ensure that they are open.
Open air valves (see towing vehicle Operator’s Manual).
Step 3.
Check for open air reservoir draincocks.
Close air reservoir draincocks (see paragraph 3-6).
Step 4.
Check parking brake lever for correct position.
Set parking brake lever to OFF position.
Step 5.
If tandem towing, check that shutoff valves at rear of towing dolly set are open.
Open shutoff valves (see paragraph 2-19).
Step 6.
Check intervehicular and intradolly service and emergency air hoses for proper connection.
Properly connect intervehicular and intradolly service and emergency air hoses (see
paragraph 2-11).
Step 7.
Check inter-vehicular, intradolly, and all other air lines for kinks, cuts, breaks, or loose connections.
Be alert for sound of leaking air.
Remove kinked intervehicular or intradolly air hoses, remove kinks, and connect.
If air hoses are damaged, notify Unit Maintenance.
8. BRAKES GRAB.
If operating in extreme cold, check for moisture in air reservoirs.
Drain moisture from air reservoirs (see paragraph 3-6). Notify Unit Maintenance.
TIRES
9.
TIRES SCUFFED OR UNEVEN OR ABNORMAL WEAR.
Step 1.
Check for correct tire inflation.
Inflate tires to 110 psi (758 kPa) for highway, cross-country, or mud.
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