Use solvent to clean the oil cooler housing and cover.
NOTE: Replace the lubricating oil cooler if any debris is found or if the engine has had a debris-generating failure.
Clean the sealing surfaces.
When cleaning the oil cooler cover, be sure to clean the lubricating oil bypass valve.
If any debris is suspected to have gone through the engine or troubleshooting a lubricating oil pressure issue, remove
and inspect the lub.ricating oil pressure regulator located in the lubricating oil cooler cover. Replace if necessary.
Refer to Procedure 007-029 in Section 7.
If any debris is suspected to have gone through the engine, inspect the oil filter bypass valve located in the
lubricating cooler cover. Make sure the valve is fully seated and opens and closes freely. Replace if necessary.
The bypass valve requires a 345 kPa [50 psi) pressure differential to open.
