44 SENR9977 Testing and Adjusting Section i01126690 Excessive Bearing Wear - Inspect When some components of the engine show bearing wear in a short time, the cause can be a restriction in an oil passage. An engine oil pressure indicator may show that there is enough oil pressure, but a component is worn due to a lack of lubrication. In such a case, look at the passage for the oil supply to the component. A restriction in an oil supply passage will not allow enough lubrication to reach a component. This will result in early wear.
i01794028 Excessive Engine Oil Consumption - Inspect g00985780 Illustration 51 Clearance for the inner rotor (2) Measure the clearance of the inner rotor to the outer rotor. 4. Measure the clearance of the inner rotor to the outer rotor (2). Engine Oil Leaks on the Outside of the Engine Check for leakage at the seals at each end of the crankshaft. Look for leakage at the gasket for the engine oil pan and all lubrication system connections. Look for any engine oil that may be leaking from the crankcase breather. This can be caused by combustion gas leakage around the pistons. A dirty crankcase breather will cause high pressure in the crankcase.
A dirty crankcase breather will cause the gaskets and the seals to leak. Engine Oil Leaks into the Combustion Area of the Cylinders Engine oil that is leaking into the combustion area of the cylinders can be the cause of blue smoke. There are several possible ways for engine oil to leak into the combustion area of the cylinders: g00989217 Illustration 52 Leaks between worn valve guides and valve stems 5. Measure the end play of the rotor with a straight edge and a feeler gauge (3). Worn components or damaged components (pistons, piston rings, or dirty return holes for the engine oil) 6. Clean the top face of the oil pump and the bottom face of the cover. Install the cover on the oil pump.
Install the oil pump on the engine. Refer to Disassembly and Assembly, “Engine Oil Pump - Install”. Incorrect installation of the compression ring and/or the intermediate ring Leaks past the seal rings in the turbocharger shaft