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 620 of 1313

FIELD MAINTENANCE

WINCH OPERATES IN ONE DIRECTION ONLY

INITIAL SETUP:

Tools and Special Tools

Tool Kit, General Mechanic's: Automotive

(Volume 5, WP

0826, Table 1, Item 56)

Test Set, Electronic Systems

(Volume 5, WP

0826, Table 1, Item 51)

Personnel Required

(2)

References

Point to Point Schematics

References (cont.)

TM 9-2320-272-10

Volume 4, WP

0677

Volume 4, WP

0680

Volume 4, WP

0681

Equipment Condition

Vehicle parked and engine shut down.

(TM

9-2320-272-10)

TROUBLESHOOTING PROCEDURE

WINCH OPERATES IN ONE DIRECTION ONLY

NOTE

Conduct these malfunction tests if winch operates in one direction only. This procedure will

check for damage to the winch control cable (front winch), in and out movement of winch

check valve, damaged or leaking control valve, rear winch tensioner released and rear winch

control lever engaged.

TM 9-2320-272-23-1

0060

0060-1