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 638 of 1313

FIELD MAINTENANCE

FRONT WINCH OPERATES AT ONE SPEED 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.)

Volume 2, WP

0270

Volume 4, WP

0680

Equipment Condition

Vehicle parked and engine shut down.

(TM

9-2320-272-10)

TROUBLESHOOTING PROCEDURE

FRONT WINCH OPERATES AT ONE SPEED ONLY

NOTE

Conduct these malfunction tests if winch operates at one speed only. This procedure will

check for a damaged or leaking winch control valve, winch control cable, and throttle control

cable.

TM 9-2320-272-23-1

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0064-1