Tools You'll Need:
* Jack and Jack Stands: Absolutely crucial for safety. Never work under a vehicle supported only by a jack.
* Wheel Chocks: To secure the rear wheels.
* Lug Wrench: To remove the wheel.
* Socket Set and Wrenches: Various sizes, including those to fit your axle nuts, caliper bolts, and possibly ball joint.
* Ball Joint Separator (or Pickle Fork): To separate the ball joint from the steering knuckle. A pickle fork can damage components; a ball joint separator is preferred.
* Hammer: May be needed to help separate components.
* Penetrating Oil (PB Blaster or similar): Soak bolts and joints overnight before attempting removal.
* CV Axle Puller (optional but highly recommended): Makes removing the axle much easier.
* New CV Axle: Ensure you get the correct replacement axle for your truck. Get the part number from a reputable parts store or your repair manual.
* Torque Wrench: Essential for proper tightening of bolts to prevent damage.
* Gloves and Safety Glasses: Protect yourself.
Steps:
1. Safety First: Park on a level surface, engage the parking brake, and chock the rear wheels. Raise the front of the truck securely with the jack and place it on jack stands.
2. Remove the Wheel: Remove the lug nuts and take off the wheel.
3. Remove the Brake Caliper: Unbolt the brake caliper and carefully hang it out of the way using a bungee cord or wire. Do not let the brake line hang freely; it can be damaged.
4. Disconnect the Ball Joint: Use the ball joint separator or pickle fork to separate the lower ball joint from the steering knuckle. This usually requires some force and may require a hammer. Be careful not to damage the ball joint or knuckle.
5. Disconnect the Axle from the Differential: This is where a CV axle puller is very helpful. If you don't have one, you may need to carefully tap on the axle to break it loose from the differential. The axle may have a retaining clip or c-clip you'll need to remove first.
6. Disconnect the Axle from the Wheel Hub: The inner CV joint will be connected to the wheel hub. Some axles have a retaining ring or clip. Others may simply slide out after separating from the differential.
7. Remove the Old Axle: Once disconnected from both ends, carefully remove the old CV axle.
8. Install the New Axle: Carefully install the new CV axle, reversing the removal process. Make sure the splines on the new axle properly engage with the differential and wheel hub.
9. Reconnect Everything: Reconnect the ball joint, brake caliper, and wheel.
10. Lower the Truck: Carefully lower the truck from the jack stands.
11. Torque Specifications: Use a torque wrench to tighten all bolts to the manufacturer's specifications found in your repair manual. This is extremely important for safety and proper function.
12. Test Drive: Take a short test drive to ensure everything is working correctly. Listen for any unusual noises.
Important Considerations:
* ABS Sensors: If your truck has Anti-lock Brakes (ABS), be aware of the ABS sensor ring located on the axle. Handle it carefully and ensure it is properly reinstalled.
* Grease: Pack the CV joints with grease before installation.
* Professional Help: If you're not comfortable performing this repair yourself, it's best to take your truck to a qualified mechanic. Improperly installed CV axles can lead to serious accidents.
This is a simplified overview. Always consult a repair manual specific to your 1997 Chevy Silverado Z71 for detailed instructions and torque specifications. Safety should be your top priority. If you are not comfortable with any of the steps, take it to a qualified mechanic.
