Here's a general procedure, but always consult your owner's manual or a repair manual specific to your 1987 Cadillac Brougham for detailed instructions and diagrams. These manuals will show you the exact location of bolts and the correct adjustment procedure. Improper adjustment can damage the pump or belt.
Warning: Working under a car can be dangerous. Use jack stands and ensure the car is securely supported before you begin any work. Disconnect the negative battery terminal before starting.
Steps (general, not specific to your model):
1. Locate the Power Steering Pump: Identify the power steering pump and its mounting bolts. They're usually on the side of the engine, often near the front.
2. Loosen Mounting Bolts: Carefully loosen the bolts that hold the power steering pump to the engine block. You'll likely need a socket wrench and possibly a ratchet. Don't remove the bolts completely, just loosen them enough to allow for adjustment.
3. Adjust Pump Position: The pump will likely have some play. You'll need to carefully move the pump to tighten the belt. The specific direction will depend on your car's setup—you might need to move it slightly towards or away from the engine. This is the critical step and requires careful observation of the belt tension. You're aiming for a slight deflection (about 1/2 inch to 3/4 inch) when you push on the longest span of the belt between pulleys.
4. Tighten Mounting Bolts: Once you've achieved the correct belt tension, carefully tighten the power steering pump mounting bolts. Tighten them in a star pattern (opposite bolts alternately) to ensure even pressure.
5. Check Tension: Recheck the belt tension. If it's still too loose or too tight, repeat steps 3 and 4.
6. Reconnect Battery: Reconnect the negative battery terminal.
7. Test Drive: Start the engine and carefully test drive the car to ensure the power steering is working correctly. Check for any squealing or other unusual noises.
Important Considerations:
* Belt Condition: Before adjusting, inspect the power steering belt for cracks, wear, or glazing. If the belt is damaged, replace it.
* Tools: You'll need the appropriate sockets, wrenches, and possibly a ratchet.
* Safety: Always prioritize safety. Use jack stands, wear safety glasses, and work in a well-ventilated area.
* Professional Help: If you're uncomfortable performing this repair yourself, take your Cadillac to a qualified mechanic.
Again, refer to your vehicle's service manual for precise instructions and diagrams. This procedure is a general guideline; the specifics will vary slightly depending on the exact year and configuration of your 1987 Cadillac Brougham.
