Troubleshooting

(Table 59, contd)
Troubleshooting Test Steps
Values Results
5. Engine Oil Pressure Switch
A. Ensure that the engine oil pressure switch is operating cor-
rectly. Refer to Troubleshooting, “Switch Circuits - Test (En-
gine Oil Pressure Switch)”.
Engine Oil Pres-
sure Switch
Result: There is a fault with the oil pressure switch circuit.
Repair: Make any necessary repairs. Refer to Troubleshoot-
ing, “Switch Circuits - Test (Engine Oil Pressure Switch)”.
Result: The oil pressure switch circuit is OK.
Proceed to Test Step 6.
6. Engine Oil Relief Valve
A. Inspect the engine oil relief valve for damage.
Damage Result: The engine oil relief valve is damaged.
Repair: Replace the oil relief valve. Refer to Disassembly and
Assembly, “Engine Oil Relief Valve - Remove and Install”.
Result: The engine oil relief valve is OK.
Proceed to Test Step 7.
7. 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 As-
sembly, “Engine Oil Cooler - Remove” and Disassembly and
Assembly, “Engine Oil Cooler - Install”.
Result: The oil cooler is OK.
Proceed to Test Step 8.
8. Fuel in the Engine Oil
A. Check fuel contamination of the engine oil. Refer to Trou-
bleshooting, “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 Step 9.
9. Piston Cooling Jets
A. Inspect the piston cooling jets for cracks, damage, or miss-
ing jets.
Piston cooling
jets
Result: A piston cooling jet is cracked, damaged, or missing.
Result: Install a new piston cooling jet. Refer to Disassembly
and Assembly, “Piston Cooling Jets - Remove and Install”.
Result: The piston cooling jets are OK.
Proceed to Test Step 10.
(continued)
UENR0612-07 119
Symptom Troubleshooting
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