TM-9-2320-283-20-1

TRUCK TRACTOR, LINE HAUL, 50,000 GVWR, 6X4, M915A1

TECHNICAL MANUAL; ORGANIZATIONAL MAINTENANCE PART 1 OF 3

DECEMBER 1983

TM-9-2320-283-20-1 - Page 525 of 926

TM 9-2320-283-20-1

GENERAL MAINTENANCE INSTRUCTIONS.

3-6.

REPAIR (Continued).

d.

Studs.

Repair minor thread damage with a thread chaser.

Replace all bent, stretched, stripped, or damaged

studs as outlined below:

(1) Remove with a stud remover.

Back studs out slowly to avoid heat buildup and seizure which can cause studs to

break off.

(2) If a stud is broken off too short to use a stud remover, use an extractor or the "welding method" to remove.

CAUTION

Refer to TM 9-237 (Welding Instructions) to avoid damage to castings if "welding method"

is used.

(3) A broken stud can be removed by welding bar stock or a nut to stud and removing with wrench.

NOTE

Standard studs may have a coarse thread on one end and a fine thread on the other end.

The coarse thread end is installed in the aluminum casting.

Studs having coarse threads

on both ends are used in some applications.

The shorter threaded end goes into the

casting.

Refer to TM 9-2320-283-20P for correct part numbers.

(4) All replacement studs have special coating and must have a small amount of anti-seize compound (MIL-A-13881)

applied on threads before stud is installed.

Install replacement studs slowly to prevent heat build-up and snapping

off.

e.

Gears.

(1) Remove gears using suitable pullers.

(2) Use the same methods described in paragraph 3-6 b (2) to remove minor nicks, burrs, or scratches on gear teeth.

f.

Bushings and Bushing Type Bearings.

When bushings and bushing type bearings seize to a shaft and spin in

the bore, the associated parts must also be replaced.

3-7