(Table 59, contd)
Troubleshooting Test Steps Values Results
6. Engine Oil Relief Valve
A. Inspect the engine oil relief valve for damage.
Damage Result: The engine oil relief valve is damaged.
Replace the oil relief valve. Refer to Disassembly and Assem-
bly, “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.
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 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.
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.
Install a new piston cooling jet. Refer to Disassembly and As-
sembly, “Piston Cooling Jets - Remove and Install”.
Result: The piston cooling jets are OK.
Proceed to Test Step 10.
10. Engine Oil Suction Tube
A. Check the inlet screen on the oil suction tube and remove
any material that may be restricting oil flow.
B. Check the joints of the oil suction tube for cracks or a dam-
aged joint.
Note: Cracks or damage may allow air leakage into the supply
to the oil pump.
Oil suction tube Result: The inlet screen on the oil suction tube is blocked with
debris.
Remove the debris from the inlet screen.
Result: The oil suction tube is cracked.
Install a new oil suction tube.
The oil suction tube is OK.
Proceed to Test Step 11.
(continued)
116 UENR0612
Symptom Troubleshooting
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