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 520 of 1313

FIELD MAINTENANCE

EXCESSIVE PROPELLER AND DRIVE SHAFTS NOISE OR VIBRATION

INITIAL SETUP:

Tools and Special Tools

Tool Kit, General Mechanic's: Automotive

(Volume 5, WP

0826, Table 1, Item 56)

Wrench, Torque, Click, Ratcheting, 3/8" Drive,

75 Ft-Lb

(Volume 5, WP

0826, Table 1, Item 62)

Personnel Required

(2)

References

Point to Point Schematics

References (cont.)

Volume 3, WP

0401

Volume 3, WP

0402

Volume 3, WP

0403

Volume 5, WP

0820

Equipment Condition

Vehicle parked and engine shut down.

(TM

9-2320-272-10)

TROUBLESHOOTING PROCEDURE

EXCESSIVE PROPELLER AND DRIVE SHAFTS NOISE OR VIBRATION

NOTE

Conduct these malfunction tests if excessive noise or vibration from propeller and drive shafts

is detected. This procedure will check universal joint lubrication, torque of all propeller shaft

yoke screws, propeller shaft for wear and damage and center bearing for looseness and

damage.

TM 9-2320-272-23-1

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