ELECTRICAL GENERAL MAINTENANCE INSTRUCTIONS - CONTINUED
ELECTRICAL SYSTEM COMPONENTS AND WIRING - CONTINUED
Do not use wire brush or any metal tool to remove corrosion from connector, receptacle or pin. These items
could scratch the surface of the connector, expose metal and cause corrosion.
Clean internal corrosion and other contamination from the connector or receptacle with solvent cleaning com-
pound. Clean external corrosion by scrubbing with abrasive mat.
Rinse away loose corrosion, dirt and other contamination from the connector and pins with solvent cleaning com-
pound. Hold connector pointed slightly downward, if possible, while spraying solvent cleaning compound into
Wipe excess spray with a lint-free cloth.
Perform steps 2 through 4 again, if necessary, to remove corrosion.
Threaded holes in metal must be thoroughly clean when sealing compounds are used to lock screws in place. Clean
old sealing compound out of threads with tap and tap wrench. Blow loose particles out of holes with compressed
air and clean threads with cleaning compound MIL-C-81302 and acid-swabbing brush. Let holes dry before put-
ting in screws.
When cleaning and inspecting ground points, take off ground contact from mounting point. Clean ground point
bolt, nut and contact with cleaning compound MIL-C-81302 and acid-swabbing brush. If corrosion is present,
clean with wire brush and abrasive cloth. Look at all parts for cracks, looseness or stripped threads. Replace dam-
aged or cross-threaded screws and nuts. Check for torn or stretched gaskets and leaks. Turn in bad parts. Be sure to
tighten all nuts when mounting ground contacts.
Rub corrosion off connector contacts and other parts with pencil eraser. Remove rust by scraping, wire brushing or
both. If rust damage is too great or on small thin parts that would be weakened by rust, you may need to replace the
part. Find the cause of the rust and correct the problem.
Disconnect the electrical connector to be inspected.
Use a good light source to look at electrical contacts.
Look for white powdery or granular material anywhere on the outer or inner surfaces of the connector and recepta-
cle. Look at the male and female sockets for signs of blue-green discoloration at the base of the pins or sockets.
Clean off surface corrosion before assembling. Electrical contacts corroded badly enough to destroy the outer
metal coating should be replaced. Any part corroded badly enough to weaken it should be replaced.
Look for bent, broken, missing or pushed-in contacts. Straighten bent pins with long, round-nosed pliers. Other
damage should be repaired or parts replaced.