This is a high-level overview; consult a detailed repair manual specific to your 1995 Chevrolet Caprice (such as a Haynes or Chilton manual) for precise instructions, torque specifications, and diagrams. Those manuals will also specify whether you have a specific type of rear main seal (e.g., rope seal or lip seal). The procedure varies slightly depending on the type.
General Steps (Highly Simplified):
1. Preparation: Disconnect the battery negative terminal. Drain the engine oil and transmission fluid (if automatic).
2. Access: This is the most labor-intensive part. You'll likely need to:
* Remove the driveshaft: This requires supporting the transmission or rear end.
* Remove the transmission (automatic): This typically involves disconnecting the torque converter, driveshaft, shift linkage, cooling lines, and electrical connectors. A transmission jack is crucial here.
* Remove the starter: Often necessary for better access.
* Possibly remove the oil pan: Depending on access, removing the oil pan may make the job easier. This means replacing the oil pan gasket.
3. Seal Removal: Once you have access to the rear main seal, carefully remove the old seal. This might involve using special tools to pry it out without damaging the crankshaft. Take note of its orientation.
4. Seal Installation: Clean the crankshaft thoroughly. Install the new rear main seal, ensuring it's seated correctly and evenly. Again, special tools may be required to install the new seal properly and avoid damaging it.
5. Reassembly: Reinstall all components in the reverse order of removal. Pay close attention to torque specifications for all bolts and nuts. Double-check all connections.
6. Refilling Fluids: Add new engine oil and transmission fluid to the proper levels.
7. Testing: Start the engine and check for leaks. Allow the engine to run for a while to ensure the seal is seating properly. Check the oil level again.
Important Considerations:
* Transmission Removal: The complexity heavily depends on whether you have an automatic or manual transmission. Automatic transmission removal adds significant difficulty.
* Torque Specifications: Improper torque can lead to stripped bolts and damaged components. Use a torque wrench and consult your repair manual.
* Seal Type: Different engines use different rear main seal types, affecting the removal and installation process.
* Professional Help: If you are not comfortable with this level of automotive repair, take your vehicle to a qualified mechanic. The cost of repair will likely be significantly less than the cost of a major engine failure due to an improperly installed seal.
This is a very simplified overview. Again, obtain a detailed repair manual specific to your 1995 Chevrolet Caprice before attempting this repair. The manual will provide detailed diagrams, torque specifications, and step-by-step instructions critical to successfully completing the job. Underestimating the difficulty of this job could lead to costly mistakes.
