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 524 of 926

TM 9-2320-283-20-1

GENERAL MAINTENANCE INSTRUCTIONS.

3-5.

INSPECTION (Continued).

I

(2) Inspect gear teeth for wear, sharp fins, burrs, and galled or pitted surfaces.

(3) Check keyway slots for wear and/or damage.

f.

Bushings and Bushing Type Bearings.

(1) Check all bushings and bushing type bearings for secure fit, evidence of heating, wear, burrs, nicks, and out-of-

round conditions.

(2) Check for dirt in lubrication holes or grooves.

Holes and grooves must be clean and free from damage.

g.

Oil Seals.

Oil seals are mandatory replacement items.

3-6.

REPAIR.

a.

General Instructions.

Repair of most parts and components is limited to procedures outlined in applicable

maintenance instructions and the following general procedures detailed in "b" through "h" below.

CAUTION

Repaired items must be thoroughly cleaned to remove metal chips and abrasives

to prevent them from entering working parts of vehicle.

b.

Castings.

(1) All cracked castings will be replaced.

(2) Only minor repairs to machined surfaces, flanges, and gasket mating surfaces are permitted.

Remove minor

nicks, burrs, and/or scratches with:

(a)

Fine mill file.

(b)

Crocus cloth dipped in cleaning solvent.

(c)

Lapping across a surface plate.

(3) Remachining of machined surfaces to repair damage, warpage, or uneven surfaces is not permitted.

(4) Repair damaged threaded holes with a thread tap.

Repair oversize holes with threaded inserts.

c.

Ball-Roller Bearings.

Refer to TM 9-214.

3-6