ARMREST AS 1369552 - Caterpillar

Probable Causes
Multiple starts or cold operation
Incorrect maintenance intervals
Contaminated engine oil
Incorrect engine oil
Contaminated air
Contaminated fuel
Low oil pressureRecommended Actions
Multiple Starts or Cold Operation
Frequent starting and stopping of the engine can cause early wear. Also, operation of the engine for short periods of time in cold conditions can cause early wear.Incorrect Maintenance Intervals
If the engine is not correctly maintained, early wear will occur.Make sure that the engine is maintained at the correct maintenance intervals. Refer to the Operation and Maintenance Manual.Contaminated Engine Oil
Check an oil sample for contamination with fuel. If contamination is found, investigate the cause. If necessary, drain the oil from the crankcase and refill the crankcase with clean engine oil. Install new engine oil filters. Refer to the Operation and Maintenance Manual.Incorrect Engine Oil
Use engine oil that is recommended and change the engine oil at the interval that is recommended by the engine's Operation and Maintenance Manual.Contaminated Air
Inspect the air inlet system for leaks. Inspect all of the gaskets and the connections. Repair any leaks.Inspect the air filter. Replace the air filter, if necessary.Contaminated Fuel
Inspect the fuel filter. Replace the fuel filter, if necessary. Refer to the Systems Operation/Testing and Adjusting manual.
Contaminants in the fuel such as hydrogen sulfide and sulfur can lead to the formation of acids in the crankcase. Obtain a fuel analysis.Low Oil Pressure
Refer to the symptom Troubleshooting, "Oil Pressure is Low".Note: When some components of the engine show bearing wear in a short time, the cause can be a restriction in a passage for engine oil. An indicator for the engine oil pressure may indicate sufficient pressure, but a component is worn due to a lack of lubrication. In such a case, look at the passage for the engine oil supply to the component. Refer to the Systems Operation/Testing and Adjusting manual.