Here's a general outline. Specific details may vary slightly depending on your exact Grand Cherokee model and engine. Always consult a repair manual specific to your vehicle's year and model for precise instructions and torque specifications.
Tools You'll Need:
* Pitman arm puller: This is absolutely essential and comes in various types (claw-style, slide hammer, etc.). A good quality one is crucial to avoid damaging the steering gear box.
* Socket wrench set (metric): You'll need various sizes to remove and reinstall bolts.
* Torque wrench: Essential for tightening bolts to the correct specification. Incorrect torque can damage components or lead to unsafe operation.
* Wheel chocks: To secure the vehicle.
* Jack and jack stands: To safely lift the vehicle.
* Penetrating oil (like PB Blaster): To help loosen rusted or seized bolts.
* Wrench for the pitman arm nut (usually a large open-ended or box-end wrench): Size will depend on your specific vehicle.
* Pry bar (optional): Can assist in separating the pitman arm from the steering linkage.
* Safety glasses and gloves: Always wear appropriate safety gear.
Procedure:
1. Safety First: Park the vehicle on a level surface, engage the parking brake, and chock the wheels. Disconnect the battery's negative terminal.
2. Prepare the Vehicle: Raise the front end of the vehicle using a jack and securely support it with jack stands. Remove the front wheels.
3. Disconnect Steering Linkage: Locate the nut securing the pitman arm to the steering gear box. Apply penetrating oil liberally and let it soak for some time. Use the wrench to loosen the nut. *This nut is often very tight and may require significant effort.*
4. Remove the Pitman Arm: This is where the pitman arm puller comes in. Follow the instructions for your specific puller. The process typically involves attaching the puller to the pitman arm and using force to separate it from the steering gear box. Be patient and avoid applying excessive force that could damage the steering gear box.
5. Install New Pitman Arm: Carefully align the new pitman arm with the steering gear box splines. Tighten the nut to the manufacturer's specified torque.
6. Reconnect Steering Linkage: Reconnect any other steering components that were disconnected.
7. Lower Vehicle: Slowly lower the vehicle from the jack stands.
8. Check for Leaks and Proper Alignment: Inspect the connections for any leaks and ensure everything is properly tightened. You'll likely need a wheel alignment after this repair.
9. Reconnect Battery: Reconnect the negative battery terminal.
Important Considerations:
* Steering Gear Box Damage: Be extremely careful during the removal and installation process to avoid damaging the steering gear box. If you are not comfortable with this, take it to a professional.
* Torque Specifications: Follow the manufacturer's torque specifications precisely. Over-tightening or under-tightening can lead to failure.
* Alignment: After replacing the pitman arm, you will almost certainly need a professional wheel alignment.
* Repair Manual: Using a repair manual specific to your 1997 Jeep Grand Cherokee is highly recommended. It will provide detailed diagrams, torque specifications, and other essential information.
This is a simplified overview. Consult a repair manual and/or seek professional help if you're not comfortable performing this repair yourself. Incorrectly completing this task can lead to unsafe driving conditions and potentially serious injury.
