Tools You'll Likely Need:
* Wheel Chocks and Jack Stands: Absolutely essential for safety.
* Lug Wrench: To remove the wheel.
* Impact Wrench (highly recommended): Makes the job significantly easier. A breaker bar and socket will work, but will require considerably more effort.
* Appropriate Sockets and Wrenches: Sizes will vary depending on your truck; consult your manual.
* Penetrating Oil (like PB Blaster): Soaking nuts and bolts beforehand is crucial.
* Hammer and Punch: Possibly needed to break loose stubborn parts.
* C-Clamp or Wheel Hub Puller: A hub puller is usually necessary.
* Torque Wrench: For proper reassembly.
* Gloves and Safety Glasses: Protect yourself.
Steps (General Outline - Consult your repair manual for specifics!):
1. Safety First: Secure the truck on jack stands and chock the wheels. Disconnect the negative battery terminal.
2. Remove the Wheel: Remove the lug nuts and take off the wheel.
3. Remove the Brake Drum (if applicable): On some 1987 Chevy one-ton trucks, you'll need to remove the brake drum before accessing the hub. This often involves using a drum puller or carefully tapping the drum with a hammer and punch. Be mindful of the brake shoes and hardware.
4. Remove the Axle Nut (or Nuts): This is usually a large nut on the end of the axle shaft. Use an impact wrench if possible. Penetrating oil applied well in advance is highly beneficial here. This nut may be very tight.
5. Remove the Cotter Pin and Washer (if applicable): There may be a cotter pin securing the axle nut.
6. Remove the Brake Backing Plate: This is often held on by several bolts.
7. Remove the Hub: This is where the hub puller comes in. The puller will press the hub off the axle shaft. If you don't have a puller, you may be able to carefully use a large C-clamp and strategically placed pry bars (but this is risky and could damage components).
8. Inspect and Replace as Necessary: Once the hub is off, inspect all components for wear and tear. Replace any worn or damaged parts, including bearings and seals.
Reassembly: Follow the steps in reverse order, remembering to tighten bolts and nuts to the correct torque specifications (found in your repair manual). Pay close attention to the proper installation of bearings and seals to prevent premature failure.
Important Considerations:
* Axle Configuration: The specific procedure will depend on the type of rear axle your truck has. A 10-bolt axle will be different from a 14-bolt.
* Repair Manual: A factory service manual or a Haynes/Chilton repair manual specific to your 1987 Chevy one-ton truck is invaluable. It will provide detailed instructions, torque specifications, and diagrams.
* Professional Assistance: If you are uncomfortable with any of these steps, it is best to seek professional help from a qualified mechanic. Improperly removing or reinstalling the hub can lead to serious damage to your truck's drivetrain.
This is a complex job. Take your time, be careful, and consult your repair manual. Safety should always be your top priority.
