Tools You'll Likely Need:
* Socket set (metric): Various sizes, including deep sockets for tight spaces.
* Wrench set (metric): Combination wrenches are helpful.
* Power steering pump pulley puller: Essential for removing the pulley without damaging it.
* Torque wrench: Crucial for tightening bolts to the correct specification.
* Drain pan: To catch power steering fluid.
* Funnel: For adding new fluid.
* New power steering pump: Make sure to get the correct one for your van's engine and year.
* New power steering fluid: Use the type specified in your owner's manual.
* Jack and jack stands: Safely support the van.
* Gloves: Protect your hands from power steering fluid.
* Safety glasses: Protect your eyes.
* Rags or shop towels: To clean up spills.
* Possibly a breaker bar: For stubborn bolts.
Steps (General Outline - Consult your repair manual for specifics):
1. Safety First: Disconnect the negative battery cable. Place the van on jack stands securely after safely raising it with a jack.
2. Drain Power Steering Fluid: Locate the power steering fluid reservoir. Remove the cap and carefully drain the fluid into a drain pan.
3. Access the Pump: The power steering pump is usually located on the front of the engine. You'll likely need to remove some components to gain access. This could include:
* Serpentine Belt: Remove the serpentine belt. Refer to your repair manual for the proper procedure; usually involves loosening the tensioner.
* Pulley: Use the power steering pump pulley puller to remove the pulley from the pump. This step is critical to avoid damage.
* Lines and Fittings: Carefully disconnect the power steering pressure and return lines. Have rags ready to absorb any spilled fluid. Mark or photograph the connections to ensure correct reassembly.
4. Remove the Pump: Remove the mounting bolts holding the power steering pump to the engine block. The pump should then come loose.
5. Install the New Pump: Install the new power steering pump, ensuring it's properly aligned. Tighten the mounting bolts to the specifications in your repair manual.
6. Reassembly:
* Install the pulley: Carefully reinstall the pulley onto the new pump.
* Reconnect lines and fittings: Attach the power steering pressure and return lines, ensuring they are securely connected and properly seated.
* Reinstall the serpentine belt: Reinstall the serpentine belt, making sure it's properly routed around all the pulleys.
* Fill the reservoir: Add new power steering fluid to the reservoir, checking the level frequently.
7. Bleed the System (Possibly): Start the engine and check for leaks. Turn the steering wheel lock to lock several times to bleed any air from the system. Check and add fluid as needed.
8. Check for Leaks: Carefully inspect all connections for leaks.
9. Lower the Van: Carefully lower the van from the jack stands.
10. Test Drive: Test drive the van to ensure the power steering is functioning correctly.
Important Considerations:
* Fluid Type: Use the correct type and amount of power steering fluid specified for your vehicle.
* Torque Specifications: Use a torque wrench to tighten all bolts to the manufacturer's specified torque values. This is crucial to prevent leaks and damage.
* Professional Help: If you're not comfortable performing this repair, it's best to take your van to a qualified mechanic. This is a job with potential for significant damage if done incorrectly.
This is a general guide. Always refer to a repair manual specific to your 1997 Chevrolet Express van for detailed instructions and torque specifications. Failure to do so could lead to damage to your vehicle or personal injury.
