Here's a general outline of the process. Specifics may vary slightly depending on your exact Venture model and trim level. Always consult a repair manual specific to your vehicle for detailed instructions and torque specifications.
Tools You'll Need:
* Jack and jack stands (Crucial for safety)
* Lug wrench
* Wheel chocks
* Socket wrench set (metric)
* Hammer
* Pry bar or brake drum puller (highly recommended)
* C-clamp (optional, for stubborn drums)
* Wire brush
* Brake cleaner
* New brake drums
* New brake shoes (almost certainly needed; drums and shoes are usually replaced together)
* Possibly new wheel cylinders (inspect carefully; they are often damaged when removing old drums)
* Grease
* Torque wrench
Procedure:
1. Safety First: Park on a level surface, engage the parking brake, and chock the front wheels. Raise the vehicle securely using the jack and support it with jack stands. Never work under a vehicle supported only by a jack.
2. Remove the Wheel: Remove the lug nuts and carefully take off the wheel.
3. Inspect the Brake System: Examine the brake shoes, wheel cylinders, and other components for wear and tear. Replace any parts that show significant wear, damage, or leakage. Pay close attention to the wheel cylinders; leaks here can cause brake failure.
4. Remove the Drum: This is often the most challenging part. Sometimes you can tap the drum gently with a hammer to loosen it. However, a brake drum puller is highly recommended as it avoids potential damage to the brake shoes or drum. If you use a hammer, protect the drum's surface with a piece of wood or metal to avoid damage. If the drum is really stuck, a C-clamp may help to carefully spread the drum slightly to release it from the backing plate.
5. Inspect and Replace Brake Shoes: Once the drum is off, inspect the brake shoes for wear. They'll likely need replacing; they're usually sold as a set. Note the orientation of the shoes before removal – they go back in the same way. Clean the backing plate thoroughly with a wire brush.
6. Clean and Inspect Wheel Cylinders: Clean the wheel cylinders thoroughly with brake cleaner. Check for leaks and damage; replace if necessary. Lightly lubricate the wheel cylinder boots with brake grease.
7. Install New Brake Shoes: Install the new brake shoes, ensuring they're correctly positioned. Adjust the brake shoes so they are properly centered against the drum. Refer to your repair manual for the proper adjustment procedure.
8. Install the New Drum: Slide the new drum onto the backing plate. It should fit snugly.
9. Reassembly: Reinstall the wheel, tighten the lug nuts to the manufacturer's specified torque (consult your repair manual). Lower the vehicle.
10. Test the Brakes: Pump the brake pedal several times to make sure the brakes are working correctly and check for any leaks. If everything seems okay, test drive the vehicle carefully. If the brake pedal feels spongy or the brakes are ineffective, immediately stop driving and have the brakes checked by a professional.
Important Notes:
* Repair Manual: A repair manual specific to your 1999 Chevy Venture is invaluable. It will provide detailed diagrams, torque specifications, and step-by-step instructions.
* Safety: Always prioritize safety. If you are unsure about any part of this process, do not attempt it yourself. Have a qualified mechanic perform the repair.
* Bleeding Brakes: After replacing components, you may need to bleed the brakes to remove any air that has entered the system. This involves opening bleed valves on the calipers to let out trapped air.
This guide provides a general overview. Consult a repair manual for your specific vehicle before beginning this repair. Improper brake repair can lead to serious injury or death.
