For 1990-2009 cars only
- Drill (2) out the oil pan gasket retaining rivets (1), if required.
- Remove the gasket (426) from the oil pan.
- Remove the oil pan cover (434), nuts (452) and gasket (433).
- Remove the oil filter fitting (438) and bypass valve (436), if required.
- Remove the oil transfer tube bolts (435), studs (451), and gaskets (445).
- Remove the oil transfer tube (447).
- Inspect the tube for damage or restrictions.
- Remove the oil pan baffle bolts and baffle.
- Remove the plugs (449) from the oil galleries.
- Remove the oil pan drain plug.
- Clean the oil pan in solvent. Be sure to thoroughly clean all of the oil passages and recesses of the pan.
- Clean the oil pan gasket surfaces.
- Dry the oil pan with compressed air.
- Inspect the oil pan for the following conditions:
- Inspect the oil filter fitting (438) for a loose fit or damaged threads.
- Inspect the oil filter bypass valve (436) for proper operation.
Important:
• Do not use the oil pan cover or oil transfer tube gaskets again. Install
NEW gaskets during assembly. • Do not use the oil pan to engine block gasket again. Install a NEW gasket
during assembly. • When installing a NEW oil pan gasket, it is not necessary to install the
rivets that retain the NEW gasket to the pan.
Refer to Replacing Engine Gaskets .
Caution: Refer to Safety Glasses Caution in the Preface section.
| • | Gasket sealing surfaces for excessive scratches or gouging |
| • | Oil pan drain plug and threaded drain hole for damaged threads |
| • | The drain plug O-ring seal may be used again if it is not cut or damaged. |
| • | Oil filter sealing surface for scratches or gouging |
| • | Oil passages for restrictions |
Lightly push the bypass valve into the bore. The valve spring should seat the valve to the proper position.
