Corrosion - Steel Control Cable.

(1) Checking for corrosion on a control cable is normally accomplished during the preventative maintenance check. During preventative maintenance, broken wire and wear of the control cable are also checked.

(2) If the surface of the cable is corroded, carefully force the cable open by reverse twisting and visually inspect the interior. Corrosion on the interior strands of the cable constitutes failure and the cable must be replaced. If no internal corrosion is detected, remove loose external rust and corrosion with a clean; dry, coarse weave rag or fiber brush.

CAUTION: Do not use metallic wools or solvents to clean installed cables.

Metallic wools will embed dissimilar metal particles in the cables

and create further corrosion. Solvents will remove internal cable

lubricant, allowing cable strands to abrade and further corrode.

(3) After thorough cleaning of exterior cable surfaces, if the cable appears dry, the lubrication originally supplied on the cable has probably oxidized and needs to be replaced with a light oil (5w motor oil, "3 in 1" oil, LPS-2, WD-40 or Diesel Fuel). Apply the oil with a cloth and then rub

the cable with the cloth to coat the cable with a thin layer of oil. Excessive oil will collect dust

and be as damaging to the cable as no lubrication.

D. Piano Type Hinges.