GENERAL INSPECTION INSTRUCTIONS

TM 9-2320-366-20-3

2-44. GENERAL INSPECTION INSTRUCTIONS

Cleaning. Clean all parts before inspection. Check for defects such as physical distortion, wear, cracks, and pitting.

b. Sealing Surfaces. Inspect all surfaces in contact with gaskets, packings, or seals for nicks and burrs. If any defect

is found, remove it before assembly.

c. Bearings. Inspect bearings for rusted or pitted balls, races, or separators. Inspect balls and races for brinelling,

abrasion, and serious discoloration. The following are conditions for bearing rejection:

(1)

Cuts or grooves parallel to ball or roller rotation.

(2)

Fatigue pits (not minor machine marks or scratches).

(3)

Cracks.

d. Gears and Splined Shafts. Inspect gears and splined shafts for wear, pittings, rolling, peening, scoring, burning,

brinnelling and fatigue cracks.

e. Tubing and Hoses. Inspect all hose surfaces for broken or frayed fabric. Check for breaks caused by sharp kinks

or contact with other parts of the vehicle. Inspect copper tubing lines for kinks. Inspect fitting threads and mating

surfaces for damage. Replace any defective part. After assembly and during initial vehicle operation period, check for

leaks.

f. Electrical Parts. Inspect all wiring harnesses and cable assemblies for broken, chafed, or burned wiring. Inspect

all terminal connectors for loose connections and broken parts.

g. Metal Parts. Visually inspect all castings and weldments for cracks. Parts that carry a great load should receive

magnetic particle inspection. Critical non-ferrous parts may be inspected with fluorescent penetrant.

h. Drain Plugs. When removing drain plugs from transmission, engine, hydraulic system components, or axle

differential and planetary hubs, check amount of sediment on plugs. Accumulations of grit or fine metal particles may

indicate actual or potential component failure. A few fine particles are normal. This inspection helps to determine if there

are defective parts prior to internal inspection of the component and to predict degradation of the equipment.

2-45. GENERAL REPAIR INSTRUCTIONS

Burrs. Remove burrs from surface teeth with a fine-cut file or crocus cloth.

b. Exterior Parts. Chassis and exterior painted parts may be resurfaced when paint is damaged, or where parts have

been repaired (TB 43-0242).

NOTE

Polished and machined steel parts not protected by cadmium, tin, copper, or other

plating or surface treatment require protection. Bare metal parts must be free of

moisture when protective coating is applied.

c. Protecting Parts. Protect bare steel surfaces from rust when not actually undergoing repair work. Dip parts in, or

spray them with, corrosion preventive compound (Item 18, Appendix D). Aluminum parts may require protection in

atmospheres having a high salt content.