Welds

TM 9-2330-385-14

4-7. GENERAL MAINTENANCE PROCEDURES (CONT).

CARC paint contains isocyanate (HDI) which is highly irritating to skin and respiratory

system. High concentrations of HDI can produce symptoms of itching and reddening of

skin, a burning sensation in throat and nose and watering of the eyes. In extreme

concentrations, HDI can cause cough, shortness of breath, pain during respiration,

increased sputum production, and chest tightness. The following precautions must be

taken whenever using CARC paint:

NEVER weld or cut CARC-coated materials.

DO NOT grind or sand painted equipment without high-efficiency air purifying

respirators in use.

BE AWARE of CARC paint exposure symptoms; symptoms can occur a few days

after initial exposure. Seek medical help immediately if symptoms are detected.

Unsafe welding practices can cause serious injury from fire, explosions, or harmful agents.

Allow only authorized personnel to weld or cut metals, and follow safety precautions in

TC 9-237. Protective clothing and goggles must be worn; adequate protective equipment

used, a suitable fire extinguisher kept nearby; and requirements of TC 9-237 strictly followed.

c. Welds. Look for loose or chipped paint, rust or gaps where parts are welded together. If a bad weld is found,

report it.

d. Electrical Wires and Connectors. Look for cracked or broken insulation, bare wires and loose or broken

connectors. Tighten loose connectors and make sure the wires are in good shape. If a bad wire or connector is found,

report it.

e. Air Lines, Hoses and Fittings. Look for wear or damage, listen for leaks and make sure that clamps and

fittings are tight. If an air leak comes from a loose fitting or connector, tighten it. If something is broken or worn out,

report it. Inspect all hoses, lines and fittings for cracks, bends, nicks, dents, stripping threads and cuts. Replace all

damaged parts.

f. Unusual Environment. When the trailer is being used in an unusual environment such as extreme heat, cold,

wet and dry conditions, PMCS should be performed more often than indicated on the PMCS table.

g. First Use Inspections. When the trailer is first being put into use or is being used for the first time after a

long period of non-use, perform all the PMCS inspections.

h. Damage. Damage is defined as any condition that affects safety or would make the trailer unserviceable for

mission requirements.

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