Here's a general outline of the process. Specific procedures and torque specifications will vary, so consult a repair manual specific to your vehicle's year and engine. A Haynes or Chilton manual is a good investment for DIYers.
1. Preparation:
* Safety First: Wear safety glasses and gloves. Work in a well-ventilated area. Properly dispose of used oil and filter according to local regulations.
* Gather Tools and Supplies: You'll need jack stands, a jack, socket set (including metric sizes), wrenches, oil pan gasket (the correct one for your engine!), new oil filter, new oil, drain pan, rags, putty knife or plastic scraper, possibly a torque wrench.
* Warm Up the Engine: Run the engine briefly to warm the oil, making it less viscous and easier to drain. Turn it off and let it sit for a few minutes to cool slightly before starting the work.
2. Drain the Oil:
* Position the drain pan under the oil pan.
* Locate the oil drain plug (usually on the bottom of the oil pan).
* Carefully loosen and remove the drain plug, letting the oil drain completely.
* Replace the drain plug once the oil is drained.
3. Remove the Oil Pan:
* Support the Engine: Securely support the engine using jack stands before proceeding. This is crucial to prevent damage.
* Remove the Skid Plate (if applicable): Many vehicles have a skid plate protecting the oil pan. You'll need to remove the bolts securing it.
* Disconnect Components: Depending on the specific engine layout, you might need to disconnect various sensors, wiring harnesses, or other components attached to the oil pan. Carefully note their locations for reassembly.
* Remove Oil Pan Bolts: Carefully remove the bolts securing the oil pan to the engine block. They are often located around the perimeter of the pan. Work systematically, loosening them slightly before fully removing them.
* Separate the Oil Pan: Once all bolts are removed, gently lower the oil pan. It may be stuck due to old gasket material. Use a putty knife or plastic scraper to carefully separate the pan from the engine block. Avoid damaging the engine block surfaces.
4. Clean and Inspect:
* Carefully clean both the engine block mating surface and the oil pan surface. Remove any old gasket material thoroughly. Use a gasket scraper or a plastic putty knife to avoid scratching the surfaces. Use a clean rag and solvent to remove any oil residue.
5. Install the New Gasket:
* Carefully position the new oil pan gasket onto the engine block. Ensure it's seated correctly. Some gaskets may require a small amount of sealant (check the gasket instructions).
6. Install the Oil Pan:
* Carefully lower the oil pan onto the gasket, ensuring it's properly aligned.
* Install the oil pan bolts, tightening them in a star pattern (or as specified in your repair manual) to distribute pressure evenly and prevent warping. Do not overtighten. Use a torque wrench to achieve the correct tightening torque.
7. Reassemble:
* Reconnect any components that were disconnected earlier.
* Reinstall the skid plate (if applicable).
* Add new oil filter.
* Add new oil (refer to your owner's manual for the correct amount and type of oil).
8. Check for Leaks:
* Run the engine for a few minutes, then check for leaks around the oil pan.
Important Considerations:
* Repair Manual: A service manual is absolutely essential for accurate procedures, torque specifications, and diagrams.
* Torque Wrench: Using a torque wrench is crucial to avoid damaging the engine block or oil pan.
* Cleanliness: Cleanliness is paramount during this process to prevent debris from contaminating the new oil.
Again, this is a general overview. Consult a repair manual specific to your 2004 Chrysler Sebring 2.7L engine for detailed instructions and torque specifications. If you're uncomfortable performing this repair yourself, it's strongly recommended to seek professional help. A botched oil pan gasket replacement can lead to serious engine damage.
