| Component | Maintenance | Malfunction | Causes | Remedies |
|---|---|---|---|---|
| Tube shell Oil Cooler Engine oil coolers | Check gaskets for leaks; test cooling system for oil contamination; test oil for contamination. | Leaking gaskets; tube pack leaks; O-ring leaks; over heats. | Vibration and electrolysis most common, age of o-rings and gaskets; loose bolts. | Repair or replace tube pack; repair or replace o-rings and gaskets. |
| Air to oil tube and fin construction | Clean and straighten damaged fins. | Lack of airflow through cooler; over heating; leaking. | Plugged; vibration; age; stress | Clean and repair or replace. |