how to repair a leaking power steering pump on a Volvo XC90

Solution

1. Preparation

• Park the vehicle on a level surface and ensure the engine is off.
• Disconnect the negative battery terminal to prevent electrical shorts.
• Gather tools and parts needed for the repair.

2. Drain Power Steering Fluid

• Place a drain pan under the power steering pump.
• Disconnect the return hose from the pump and allow the fluid to drain completely.
• Dispose of the old fluid according to local regulations.

3. Remove the Power Steering Pump

• Disconnect the inlet and outlet hoses from the power steering pump using a wrench.
• Remove any retaining bolts securing the pump to the engine bracket using a socket set.
• Carefully lift the pump out of its mounting location.

4. Inspect and Replace Seals

• Inspect the pump for damaged seals or o-rings.
• If necessary, replace the worn seals with new ones.
• Clean the pump mounting area to ensure a proper seal.

5. Install the New or Repaired Pump

• Position the power steering pump back into its mounting location.
• Reinstall the retaining bolts and torque them to the manufacturer’s specifications (typically around 18-25 ft-lbs).
• Reattach the inlet and outlet hoses, ensuring they are securely tightened.

6. Refill Power Steering Fluid

• Fill the power steering reservoir with the appropriate type of power steering fluid (check the owner’s manual for specifications).
• Start the engine and turn the steering wheel from lock to lock several times to purge air from the system.

7. Check for Leaks

• Inspect the pump and hoses for any signs of leaking fluid after the engine has run for a few minutes.