CLEANING AND TOUCHUP PAINTING.

TM 11-5820-670-12

ORGANIZATIONAL PREVENTIVE MAINTENANCE CHECKS AND SERVICES. (CONT)

3-6.

PULLOUT INTERVAL

Radio Set AN/ARC-131 will be removed from aircraft every 300 flight-hours and checked by direct

support (aviation intermediate) maintenance personnel. Instructions for performing required checks

are identified as pullout checks in direct support (aviation intermediate) maintenance manuals.

3 - 7 . CLEANING AND TOUCHUP PAINTING.

This paragraph provides procedures for cleaning exterior surfaces of the radio set and instructions for

touchup, refinishing, or repainting as required.

CLEANING

WARNING

Fumes of TRICHLOROTRIFLUOROETHANE are poisonous. Provide adequate ventilation

whenever you use TRICHLOROTRIFLUOROETHANE. Do not use solvent near heat or open

flame. TRICHLOROTRIFLUOROETHANE will not burn, but heat exchanges the gas into

posionous, irritating fumes. DO NOT breathe the fumes or vapors. TRICHLOROTRl-

FLUOROETHANE dissolves natural skin oils. DO NOT get the solvent on your skin. Use

gloves, sleeves, and an apron which the solvent cannot penetrate. If the solvent is taken

internally, consult a physician immediately.

CAUTION

Use only clear water and a rag to clean plastic surfaces. Do not paint a plastic surface.

Damage to plastic will result if cleaned with solvents or painted. Do not press on meter

face when cleaning, meter face may become damaged.

Remove moisture and loose dirt with a clean, dry, soft cloth. If dirt is difficult to remove, dampen cloth

with water; if necessary, use mild soap. Oil and greases can be removed by damping cloth with clean-

ing solvent.

Excessively dirty intake and exhaust grills on the exterior of the receiver-transmitter can be cleaned by

brushing off loose dirt with a dry brush, or vacuuming if a vacuum cleaner is available.

TOUCHUP PAINTING

CAUTION

Do not paint plastic surfaces. If plastic is accidentally painted, do not try to remove paint

as damage to plastic will occur.

When the radio set requires repainting, refinishing, or touchup painting, use a lusterless aviation

black paint, color no. 37038 as listed in Federal Standard No. 595a, or equivalent. Refer to applica-

ble painting and refinishing instructions given in SB 11-573 and TB 43-0118.

Remove rust and corrosion from metal surfaces by lightly sanding with fine sandpaper. Brush two thin

coats of paint on bare metal to protect it from further corrosion.

A perfect match with exact shade of original paint may not be possible. The prevention of corrosion

and deterioration is the most important consideration. This, however, should not be taken to mean

appearance is not important. Touchup paint should be accomplished neatly and in a good workman-

ship-like manner.

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