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 498 of 1313

FIELD MAINTENANCE

HARD SHIFTING OF TRANSFER CASE

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

0307

Volume 3, WP

0352

Volume 3, WP

0396

Volume 5, WP

0820

Equipment Condition

Vehicle parked and engine shut down.

(TM

9-2320-272-10)

TROUBLESHOOTING PROCEDURE

HARD SHIFTING OF TRANSFER CASE

NOTE

Conduct these malfunction tests if transfer case is hard shifting or will not shift. This procedure

will check transfer case for fluid level, transfer case shift linkage for damage or missing parts,

proper lubrication, and defective linear valve transfer case shift lever switch and wiring.

TM 9-2320-272-23-1

0040

0040-1