TM-9-2320-272-23-1

TRUCK, 5-TON, 6X6, M939, M939A1, AND M939A2 SERIES TRUCKS (DIESEL)

TECHNICAL MANUAL; FIELD MAINTENANCE MANUAL; VOLUME 1 OF 5

SEPTEMBER 2012

TM-9-2320-272-23-1 - Page 452 of 1313

LOSS OF COOLANT - Continued

CONDITION/INDICATION

IS THERE EVIDENCE OF LEAKS OR DAMAGE TO TRANSMISSION OIL COOLER?

DECISION

YES - Loose hoses and/or clamps. Tighten or replace hoses and clamps (Volume 3, WP

0382). Go to Step (4)

to verify problem is solved.

YES - Coolant present in transmission oil. Notify supervisor. Action may not be possible at this level of

maintenance.

YES - Damaged and leaking transmission oil cooler. Replace transmission oil cooler

M939/A1 (Volume 3, WP

0380), M939A2 (Volume 3, WP

0383). Go to Step (4) to verify problem is solved.

NO - Go to Step (3).

TM 9-2320-272-23-1

0029

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