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TM 9-2330-394-13&P
0043 00
Cuts or grooves parallel to ball or roller rotation.
Fatigue pits (not minor machine marks or scratches).
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 trailer. Inspect fitting threads and
mating surfaces for damage. Replace any defective part. After assembly and during initial trailer
operation period, check for leaks.
Electrical Parts. Inspect all wiring harnesses for broken, chafed, or burned wiring. Inspect all
terminal connectors for loose connections and broken parts.
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.
Burrs. Remove burrs from surface teeth with a fine-cut file or crocus cloth.
Exterior Parts. Chassis and exterior painted parts may be resurfaced when paint is damaged,
or where parts have been repaired TB 43-0242m CARC Spot Painting (WP 0123 00).
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..
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 9, WP 0176 00).
Aluminum parts may require protection in atmospheres having a high salt content.
Screws, Nuts and Fittings. Replace any screw, nut, or fitting with damaged threads. Inspect
tapped holes for thread damage. If cross-threading is evident retap the hole for the next oversize
screw or stud. If the retapping will weaken the part, or if the cost of the part makes retapping
impractical, replace the part. Chasing the threads with proper size tap or die may be adequate.
Stud Installation. When installing studs use a proper driver. A worn stud driver may damage
the end thread. Then a chasing die must be used before a nut can be screwed on. This
procedure will remove cadmium plating and allow corrosion. Before installing a stud, inspect the
hole for chips. Blow out foreign matter and start stud by hand. Before final insertion, coat thread
with a film of antiseize compound (Item 3, WP 0176 00). Install stud to proper "setting height",
which is the total projecting length.
Dents. Straighten minor body dents by tapping with a soft-faced hammer while using a wooden
block backing.
Sheet Metal Repair. Repair minor skin cracks by installing patches.
Wire Repair. Replace all broken, worn, or burned electrical wiring. Wires with several broken
strands must be replaced. Broken strands will increase the resistance of the wire and impair
efficiency of electrical components. Wire numbers must be permanently identified on any new
0043 00-5


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