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 285 of 452

AIR SYSTEM AND BRAKES - CONTINUED

MALFUNCTION

Trailer air supply control is not pushed in (ON).

CORRECTIVE ACTION

Check trailer air supply control is pushed in (charging position). Push in air

supply control (WP 0005).

MALFUNCTION

Inter-vehicular air hoses are not securely connected between tractor and trailer.

CORRECTIVE ACTION

Check both inter-vehicular air hoses are connected securely between tractor

and trailer (WP 0012). Connect hoses securely (WP 0012).

MALFUNCTION

Leaks in air system.

CORRECTIVE ACTION

Check for obvious leaks in tractor air system. If any leaks are found, notify

supervisor. If no leaks are found, notify supervisor to troubleshoot trailer.

END OF TASK

DRIVELINE AIR CONTROL SYSTEM

SYMPTOM

Driveline will not disengage (indicator lamp stays on) when differential

LOCK/UNLOCK is moved to UNLOCK position.

MALFUNCTION

Driveline has not had enough time to disengage since activated or excessive

driveline wind up has occurred.

CORRECTIVE ACTION

1. Check system has been unlocked long enough for system to disengage.

Put LOCK/UNLOCK control in UNLOCK position and wait for lamp to

go off (WP 0005).

2. If LOCK indicator lamp stays on, excessive driveline wind up may have

occurred. Back up slowly and check if LOCK indicator lamp goes off. If

indicator lamp stays on, notify supervisor.

END OF TASK

TM 9-2320-273-10

0023

0023-11