7.8.3 Copper and Alloys

Reciprocating engine: Bearings; wrist pin and valve train bushings; other bushings and thrust washers; oil cooler tubing. Also may be present as on oil additive or a crossover contaminant from a leaking transmission seal.

Turbine engine: Some main and accessory bearing retainers; bushing and nuts; some oil control valves.

Transmission: Discs; bearings; bushings and thrust washers; oil cooler tubing.

Torque converter: Retainers and separators.

Differential: Bearings; bushings; retainers, and thrust washers.

Final drive/reduction gearbox: Bearings; bushings, retainers and thrust washers; oil cooler tubing.

Hydraulic: Bearings and bushings; swash plate cups; valves; some pistons; some pump cylinders; oil cooler tubing.

Compressors:
Bearings; bushings, thrust washers and retainers; oil cooler tubing.
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