HOSE AS 2928663 - Caterpillar

Probable Causes
Multiple starts or cold operation
Incorrect maintenance intervals
Dirt in engine oil
Incorrect oil
Contaminated oil
Leaks in air intake system
Dirt in 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, "Maintenance Interval Schedule".Dirt in Engine Oil
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 for more information. Incorrect Oil
Check that the engine is filled with oil of the correct specification. Refer to the Operation and Maintenance Manual, "Refill Capacities and Recommendations".
If necessary, drain the engine oil system and refill the engine oil system. Refer to Operation and Maintenance Manual, "Engine Oil and Filter - Change". Contaminated Oil
Check an oil sample for contamination with fuel. If contamination is found, investigate the cause.Leaks in Air Intake System
A leak in the air intake system may allow unfiltered air into the engine. Inspect the air intake system for streaks which may indicate a leakage of unfiltered air. Inspect all of the gaskets and the connections. Repair any leaks. Refer to Systems Operation, Testing and Adjusting, "Air Intake System" for more information.Dirt in Fuel
Remove the fuel filters. Inspect the fuel filters for contamination. Install new fuel filters. Refer to the Operation and Maintenance Manual, "Fuel System Filter- Replace" and Operation and Maintenance Manual, "Fuel System Primary Filter (Water Separator) Element - Replace". Determine the cause of the contamination.
Check the diesel fuel for contamination. Refer to Systems Operation, Testing and Adjusting, "Fuel Quality - Test". Low Oil Pressure
Refer to Troubleshooting, "Low Engine Oil Pressure" for the testing procedure. Repair any identified faults.