55. Oil Pan Cleaning and Inspection

Oil Pan Cleaning and Inspection





1. Important: When installing a NEW oil pan gasket, it is not necessary to install the rivets that retain the NEW gasket to the pan.

Remove the oil filter fitting and bypass valve, as required.
2. Remove the drain plug (430) and O-ring (429).
3. Remove the oil level sensor (727), bolt (751), and O-ring (728).

4. Caution: Refer to Safety Glasses Caution in Service Precautions.

Clean the oil pan in solvent. Be sure to thoroughly clean all of the oil passages and recesses of the pan.
5. Dry the oil pan with compressed air.
6. Inspect the oil pan for the following conditions:
^ Damaged gasket surfaces
^ Restrictions within the oil passages of the pan
^ Threaded bolt holes for damage





7. Inspect the displacement on demand oil pressure relief valve for proper operation. Lightly depress the valve (2). The valve spring (1) should seat the valve to the proper closed position.





8. The valve (455) is press-fit in the oil pan and is serviceable separately.