1. Safety First:
* Park on a level surface, engage the parking brake firmly.
* Chock the front wheels. This is crucial to prevent the truck from rolling.
* Wear safety glasses. Brake dust is irritating.
* Use jack stands. Never work under a vehicle supported only by a jack.
2. Prepare the Wheel:
* Loosen the lug nuts slightly before jacking up the truck.
* Safely jack up the truck and securely support it on jack stands.
* Remove the wheel.
3. Access the Brake Drum:
* Inspect the brake drum for any obvious obstructions like excessive rust or debris.
* You may need to clean the area around the drum.
4. Remove the Drum:
* This is where it gets tricky. Sometimes, the drum simply slides off after you've removed the wheel. Often, however, the drum is seized to the backing plate due to rust or corrosion.
* Try gently tapping the drum with a rubber mallet all around its circumference. Start with light taps and increase gradually. Avoid damaging the drum or backing plate.
* If tapping doesn't work, you might need to use a brake drum puller. These tools are designed to gently separate the drum from the backing plate. Using a screwdriver or other pry bar can damage the drum or backing plate and is not recommended. Rent or buy a suitable puller if necessary.
* Once the drum is loose, it should slide off.
5. Inspect and Replace Components (if necessary):
* Once the drum is off, inspect the brake shoes, wheel cylinders, and other components. Look for wear, damage, or leaks.
* Replace worn or damaged components before reinstalling the drum. This is a good time to clean and lubricate the backing plate.
6. Reinstallation:
* Reinstallation is the reverse of removal.
* Ensure that the brake shoes are properly adjusted.
* Tighten the lug nuts to the manufacturer's specifications.
* Lower the vehicle safely.
* Test the brakes carefully before driving.
Important Notes:
* If you're not comfortable performing this repair yourself, take your truck to a qualified mechanic. Brake work is critical for your safety.
* Rust and corrosion are common issues. Penetrating oil applied several hours before attempting removal can help loosen seized components.
* Never force anything. If you encounter excessive resistance, stop and reassess the situation. Using too much force can cause damage.
This is a general guide. Refer to a repair manual specific to your 1995 Isuzu truck model for detailed instructions and diagrams. Improper brake repair can be dangerous. If unsure, seek professional help.
