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  • Chapter 7: Propellers › Servicing Propellers › Propeller Lubrication

    this reason, the propeller manufacturer’s greasing schedule must be followed to ensure proper lubrication of moving parts and protection from corrosion. Observe overhaul periods because most defects in propellers are not external but unseen internal corrosion. Dissimilar metals…

  • Chapter 9: Aircraft Electrical System › Wire Installation & Routing › Wire Shielding

    attachment surface to be contacted by the bonding terminal. Electrical wiring should not be grounded directly to magnesium parts. • Corrosion protection—one of the more frequent causes of failures in electrical system bonding and grounding is corrosion. The areas around ... taken. Aluminum alloy jumpers are recommended for most cases; however, copper jumpers should be used to bond together parts made of stainless steel, cadmium-plated steel, copper, brass, or bronze. Where contact between dissimilar metals cannot be avoided, the choice…

  • Chapter 6: Lubrication & Cooling Systems › Recommendations for Changing Oil › Oil Filter/Screen Content Inspection

    adjustment. Draining Oil Oil, in service, is constantly exposed to many harmful substances that reduce its ability to protect moving parts. The main contaminants are: • Gasoline, • Moisture, • Acids, • Dirt, • Carbon, and • Metallic particles. Because of the accumulation of these harmful…