Tools You'll Need:
* Wheel wrench: To remove the wheel.
* Jack and jack stands: To safely lift the truck. Never work under a vehicle supported only by a jack.
* Lug wrench: For removing lug nuts.
* Hammer: For persuasion (gentle persuasion!).
* Screw driver (flathead and possibly Phillips): For various fasteners.
* C-clamp or brake spring compressor: Essential for compressing the brake springs. A C-clamp works, but a dedicated spring compressor is safer and easier.
* Socket wrench set (metric): You'll likely need various sizes.
* Wrench set (metric): For various nuts and bolts.
* Penetrating oil (PB Blaster or similar): To loosen rusted bolts.
* Gloves: To protect your hands.
* Wire brush: To clean rusted surfaces.
* Brake cleaner: To clean brake parts.
* Shop towels or rags: To clean up spills and keep things tidy.
Procedure:
1. Safety First: Park on a level surface, engage the parking brake, and chock the front wheels. Use jack stands to securely support the truck after lifting it with the jack.
2. Remove the Wheel: Loosen the lug nuts slightly before jacking up the truck. Once lifted and secured, remove the lug nuts completely and carefully remove the wheel.
3. Remove the Drum: You should now see the brake drum. Sometimes it can be stubborn. Try tapping it gently all around with a hammer to break it loose. If it's really stuck, you may need to use a drum puller (available at auto parts stores).
4. Inspect the Brake Shoes: Once the drum is off, inspect the brake shoes for wear. They should have sufficient lining remaining. Replace if necessary.
5. Compress the Spring(s): This is the trickiest part. You absolutely need a brake spring compressor or a strong C-clamp to safely compress the springs holding the brake shoes in place. Improperly compressing the springs can cause them to snap back and injure you. Follow the instructions that come with your compressor carefully. The springs will be under significant tension.
6. Remove the Brake Shoes: Once the springs are compressed, you should be able to remove the brake shoes. Note the position and orientation of each component – it will help with reassembly. You may need to remove retaining clips or pins.
7. Remove the Wheel Cylinders: These are usually held on by bolts. Be prepared for brake fluid leakage. Have rags ready to soak up the fluid. Once removed, inspect the wheel cylinders for leaks or damage. Replace if necessary.
8. Remove the Adjuster: There's a mechanism for adjusting the brake shoes. This is usually a star-shaped wheel or similar mechanism. You may need to loosen or remove it.
9. Clean and Inspect: Thoroughly clean all parts with brake cleaner. Inspect all components for wear, damage, or corrosion.
10. Reassembly: Reassembly is the reverse of disassembly. Pay close attention to the order and placement of all components. Make sure the springs are properly compressed and seated before releasing the compressor. Ensure the brake shoes are properly adjusted.
11. Bleed the Brakes: After reassembly, you'll need to bleed the brakes to remove any air that may have entered the system. This is best done with a helper.
Important Notes:
* Metric Tools: Remember that most Chevy Luv parts use metric measurements.
* Brake Fluid is Hazardous: Brake fluid is corrosive and harmful to your skin and paint. Use gloves and clean up any spills immediately.
* If Unsure, Seek Professional Help: If you're not comfortable working on brakes, it's best to take your truck to a qualified mechanic. Improperly functioning brakes are extremely dangerous.
This guide provides a general overview. The exact procedure may vary slightly depending on the specific model and condition of your 1981 Chevy Luv. Consult a repair manual specific to your vehicle for the most accurate and detailed instructions. A Haynes or Chilton manual is a good investment for any DIY mechanic.
