TM-9-2320-273-10
TRUCK, TRACTOR, LINE HAUL; LIGHT EQUIPMENT TRANSPORTER; TRUCK CHASSIS; MEDIUM EQUIPMENT TRANSPORTER
TECHNICAL MANUAL; OPERATOR’S MANUAL
DECEMBER 2012
TM-9-2320-273-10 - Page 283 of 452
TRANSMISSION - CONTINUED
CORRECTIVE ACTION
Check level on dipstick with engine at idle and vehicle on level ground. If
transmission is 100–250° F (38–121° C) and fluid level is above HOT RUN
band, or if temperature is below 100° F (38° C) and fluid level is below
COLD RUN band, notify supervisor.
END OF TASK
AIR SYSTEM AND BRAKES
SYMPTOM
Low pressure in air system (low air pressure warning lamp and buzzer are on).
MALFUNCTION
Leak in air system.
CORRECTIVE ACTION
1. Check all reservoir drains are closed. Close any open reservoir drains.
2. If tractor is not coupled to trailer, check trailer air supply control is
pulled out (OFF). Pull air supply control out (OFF).
3. Check for possible air leaks at air reservoirs, hoses, fittings, and at
inter-vehicular air hose connections. If any leaks are found, notify
supervisor.
4. If tractor is coupled to trailer, and your test and inspections of tractor do
not reveal any trouble with tractor, troubleshoot trailer. If tests,
inspections, and corrective actions for both tractor and trailer do not
resolve low air pressure problem, notify supervisor.
SYMPTOM
Trailer brakes will not apply when brake pedal is used or hand control on steering
column is used.
MALFUNCTION
Inter-vehicular air hoses are not securely connected or trailer has air system leak.
CORRECTIVE ACTION
Check both inter-vehicular air hoses are connected securely between tractor
and trailer (WP 0012). Connect air hoses securely to trailer. Charge trailer
air system by pushing in (ON) trailer air supply control. If trouble continues,
notify supervisor.
TM 9-2320-273-10
0023
0023-9
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