TM-9-2320-272-24-2

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

TECHNICAL MANUAL; UNIT, DIRECT SUPPORT, AND GENERAL SUPPORT MAINTENANCE MANUAL; VOLUME 2 OF 4

JUNE 1998

TM-9-2320-272-24-2 - Page 871 of 991

4-26. ENGINE

TM 9-2320-272-24-2

13.

Inspect drive gear (1) and coupling halfshaft (10) for breaks, cracks, and galling in bore. Replace if

cracked, broken, or bore shows galling.

14.

Inspect drive gear (1) and coupling halfshaft (10) for chipped and broken teeth. Replace drive

gear (1) and coupling halfshaft (10) if teeth are broken or chipped.

15.

Inspect thrust washers (5) and (8) for cracks and scoring. Replace if cracked, broken, or scored.

16.

Replace both thrust washers (5) and (8) if end play measured in task b., step 1, is greater than

0.012 in. (0.3 mm).

17.

Inspect two dowel pins (2) and (4) for burrs or cracks. Replace if cracked or burred.

4-189