Lubrication System

PURPOSE
Provide sufficient lubrication to protect turbocharger bearings from damage and premature failure.

OPERATION
The turbocharger is lubricated by engine oil. Because it operates at speeds up to 150,000 rpm, bearing lubrication is necessary for cooling and friction reduction.

Turbocharger oil pressure is obtained through an adapter fitting on the rear of the engine. Oil enters the turbocharger through an inlet fitting in the center housing. Center housing bearings are lubricated through oil passages which direct oil to the bearing housings. These bearings are cooled by engine coolant. Bearings are drilled to improve oil circulation. Lip ring seals are used on both turbine and compressor wheel shaft ends to prevent engine oil leakage into turbine wheel and compressor wheel housing. Oil returns from turbocharger and to engine through a return hole in the center housing.

Accelerating the engine to high rpm immediately after starting can damage engine and/or turbocharger. Immediately shutting down an engine that has been operating at high rpm for an extended period of time can damage the engine and/or turbocharger.