Here's a general procedure. Specific steps and torque specifications might vary slightly depending on the exact engine in your car (3.8L V6 is most likely but it could be a different engine). Consult a repair manual specific to your vehicle's year, make, and model for detailed instructions and diagrams. A Haynes or Chilton manual is a good investment.
Steps:
1. Drain the Power Steering Fluid: Locate the power steering fluid reservoir. Carefully drain the fluid into a suitable container. You'll need to find the drain plug or otherwise empty the reservoir.
2. Disconnect the Battery: Disconnect the negative battery cable.
3. Remove the serpentine belt: Use a belt wrench or suitable tool to loosen the tensioner and remove the serpentine belt. This will give you access to the power steering pump pulley. Take note of the belt routing before removing it.
4. Disconnect the Pressure Hose: Locate the high-pressure hose connecting to the pump. There's likely a retaining clip or clamp. Loosen this and carefully remove the hose. Be prepared for some fluid leakage. Have rags ready.
5. Disconnect the Return Hose: Locate the low-pressure return hose. Remove the hose clamp and disconnect the hose. Again, be prepared for some fluid leakage.
6. Remove the Power Steering Pump Pulley (If Necessary): Some pumps have a pulley that needs to be removed separately. This may require a pulley puller. If the pulley is attached to the pump with bolts, simply remove them.
7. Remove the Power Steering Pump Mounting Bolts: Locate the bolts holding the power steering pump to the engine block. These are typically located on the sides or bottom of the pump. Use a socket wrench to remove them.
8. Remove the Power Steering Pump: Once the bolts are removed, carefully remove the power steering pump from the engine. It may be slightly stubborn due to corrosion or sealant. Gently rock and wiggle it free.
9. Inspect the Pump and Seals (Optional): Before installing a new pump, inspect the old one for any signs of damage or wear. Pay attention to the seals and the pump shaft.
10. Install the New Pump (Reverse Procedure): Follow the steps above in reverse order to install the new power steering pump. Make sure to use new gaskets and seals as needed. Torque the bolts to the manufacturer's specifications (consult your repair manual).
11. Refill the Power Steering Fluid: Once the new pump is installed, refill the power steering fluid reservoir to the proper level. Consult your owner's manual for the correct type of fluid.
12. Check for Leaks: Start the engine and check for any leaks around the power steering pump and hoses.
13. Reconnect the Battery: Reconnect the negative battery cable.
Important Considerations:
* Repair Manual: A repair manual specific to your 1995 Oldsmobile 88 Royale is highly recommended. It will provide detailed diagrams and torque specifications.
* Fluid Type: Use the correct type of power steering fluid.
* Bleeding the System: After installation, you may need to bleed the power steering system to remove any air bubbles. Your repair manual will explain this process.
* Professional Help: If you are not comfortable performing this repair yourself, it's best to take your vehicle to a qualified mechanic.
This information is for general guidance only. Always consult your vehicle's repair manual for specific instructions and safety precautions. Improper repair could lead to damage to your vehicle or personal injury.