BREATHER AS 3362236 - Caterpillar

Illustration 1 g02856758
Diagnostic code 100-17 Engine Oil Pressure versus Engine Speed
Illustration 2 g02856759
Diagnostic code 100-18 Engine Oil Pressure versus Engine Speed
Illustration 3 g02856760
Diagnostic code 100-1 Engine Oil Pressure versus Engine Speed
Probable Causes
Engine oil level
Oil specification
Aerated oil
Engine oil pressure
Engine oil filter
Engine oil cooler
Fuel in the engine oil
Piston cooling jets
Engine oil suction tube
Engine oil pump pressure relief valve
Engine oil pump
Bearing clearanceRecommended Actions
Note: The procedures have been listed in order of probability. Complete the procedures in order.
Table 2
Troubleshooting Test Steps Values Results
1. Engine Oil Level
A. Check the engine oil level.
Oil level
Result: The engine oil level is low.
Repair: Fill the oil system to the full mark on the dipstick.
Result: The engine oil level is OK.
Proceed to Test Step 2.
2. Oil Specification
A. Check that engine oil of the correct specification is being used. Refer to the Operation and Maintenance Manual, "Refill Capacities and Recommendations".
Oil specification
Result: An incorrect specification of engine oil is being used.
Repair: Drain the oil system and refill the oil system with engine oil of the correct specification. Refer to Operation and Maintenance Manual, "Engine Oil and Filter - Change".
Result: The engine contains oil of the correct specification.
Proceed to Test Step 3.
3. Aerated Oil
A. Sample the engine oil for aeration.
Note: Foamy oil on the dipstick is a good indication of aeration.
Aeration
Result: The oil is aerated.
Proceed to Test Step 9.
Result: The oil is not aerated.
Proceed to Test Step 4.
4. Engine Oil Pressure
A. Check the actual engine oil pressure with a calibrated test gauge. Compare the oil pressure reading from the electronic service tool to the pressure on the test gauge.
Oil pressure
Result: The oil pressure reading from the electronic service tool and the pressure on the test gauge are different.
Repair: Install a new oil pressure transmitter. Refer to Disassembly and Assembly, "Engine Oil Pressure Sensor - Remove and Install".
Result: The oil pressure reading from the electronic service tool and the pressure on the test gauge are similar.
Proceed to Test Step 5.
5. Engine Oil Filter
A. Remove the engine oil filter. Refer to the Operation and Maintenance Manual, "Engine Oil and Filter - Change".
B. Inspect the engine oil filter for evidence of blockage.
Oil filter
Result: The oil filter is blocked.
Repair: Investigate the cause of the filter blockage.
Install a new oil filter. Refer to the Operation and Maintenance Manual, "Engine Oil and Filter - Change" for further information.
Result: The oil filter is OK.
Repair: Install a new oil filter. Refer to the Operation and Maintenance Manual, "Engine Oil and Filter - Change" for further information.
Proceed to Test Step 6.
6. Engine Oil Cooler
A. Check the oil cooler for signs of damage or restrictions.
Oil cooler
Result: The oil cooler has signs of damage or restriction.
Repair: Install a new oil cooler. Refer to Disassembly and Assembly, "Engine Oil Cooler - Remove" and Disassembly and Assembly, "Engine Oil Cooler - Install".
Result: The oil cooler is OK.
Proceed to Test Step 7.
7. Fuel in the Engine Oil
A. Check fuel contamination of the engine oil. Refer to Troubleshooting, "Oil Contains Fuel".
Oil contamination
Result: The oil contains fuel.
Repair: Refer to Troubleshooting, "Oil Contains Fuel".
Result: The oil is not contaminated.
Proceed to Test