SHOE 2S6356 - Caterpillar

One of the problems in the list that follows will generally be an indication of a problem in the engines lubrication system.
Excessive consumption of engine oil
Low engine oil pressure
High engine oil pressure
Excessive bearing wear
Increased engine oil temperatureExcessive Consumption of Engine Oil
Incorrect Engine Oil Level
Overfilling the crankcase will increase the consumption of engine oil. Make sure that the engine oil level is correct.External Leak
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 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.Measure the crankcase blowby according to the engines Operation and Maintenance Manual, "Crankcase Blowby - Measure/Record".Internal Leak
There are several possible ways for engine oil to leak into the combustion chambers:
Leakage between worn valve guides and valve stems
Worn components or damaged components (pistons, piston rings, or dirty passages for engine oil)
Incorrect installation of the compression ring and/or the intermediate ring
Leakage past the seal rings in the turbocharger
Overfilling of the crankcase
Incorrect dipstick or guide tubeSigns of internal leaks include high consumption of engine oil, blue smoke, and excessive detonation.If the pistons are suspected, check the cylinder compression. Refer to the engines Operation and Maintenance Manual, "Cylinder Pressure - Measure/Record".Worn Components
Excessively worn engine components and damaged engine components can result from the following conditions:
Contaminated engine oil
Incorrect fuel system settings
Contamination from the inlet airExtended Operation with Low Loads
Extended operation at low idle or extended operation at a reduced load will cause increased oil consumption and carbon buildup in the cylinders. This will occur if the engine is usually operated at a torque that is significantly below the rated power.The engine can be operated at a low load. However, engine operation at a low load is limited. For information on operation with a low load, refer to the engines Operation and Maintenance Manual, "Engine Operation".Measuring Engine Oil Pressure
A faulty indicator or a faulty sensor for engine oil pressure can provide a false indication of the engine oil pressure.The 1U-5470 Engine Pressure Group can be used to compare the indicator on the instrument panel and the engine oil pressure that is displayed on the Caterpillar Electronic Technician (Cat ET).
Work carefully around an engine that is running. Engine parts that are hot, or parts that are moving, can cause personal injury.
Check the engine oil pressure to the camshaft and main bearings on the side of the cylinder block at a plug for the main engine oil gallery. With the engine at operating temperature, the minimum engine oil pressure at full load rpm is approximately 400 kPa (58 psi). The minimum engine oil pressure at low idle rpm is approximately 175 kPa (25 psi).Low Engine Oil Pressure
Engine Oil Level
Check the level of the engine oil in the crankcase. Add engine oil, if necessary.It