Here's what you'll likely need to do to fix it, but strongly consider taking it to a qualified mechanic. Working on brakes is dangerous if done improperly. A mistake could lead to brake failure.
What you'll need:
* New wheel cylinder: This is the most likely culprit. You'll need one for each rear wheel, although if only one side is leaking, you might want to replace both for even braking performance.
* New brake shoes: These often need replacing when you replace the wheel cylinders. They might be damaged or worn, making the repair incomplete if not replaced.
* Brake fluid: DOT 3 brake fluid is usually specified for this vehicle. Make sure you get the correct type.
* Wheel cylinder C-clips: These hold the wheel cylinder in place. They're small, easy to lose, and often break when removing the old cylinder.
* Socket wrench set: Including metric sockets.
* Lug wrench: To remove the wheels.
* C-clamp (optional but recommended): Helpful for compressing the brake shoes.
* Jack and jack stands: Essential for safety when working under the vehicle.
* Wheel chocks: Essential for safety.
* Shop rags or paper towels: To clean up brake fluid spills.
* Gloves: Brake fluid is corrosive.
Steps (Simplified – Consult a Repair Manual):
1. Safety First: Park on a level surface, engage the parking brake, use jack stands, and chock the front wheels.
2. Remove the wheel: Use your lug wrench to remove the wheel nuts and take off the wheel.
3. Remove the brake drum: Sometimes this simply pulls off, other times it might require gently tapping it with a rubber mallet. Be careful not to damage the drum. If it's difficult to remove it, you may need to use a drum puller.
4. Inspect the wheel cylinder: Look for damage, leaks, or corrosion. You'll likely see fluid seeping from it if it's faulty.
5. Remove the wheel cylinder: This usually involves removing the retaining clips (C-clips), and potentially a few other small bolts depending on the design.
6. Compress the brake shoes: Use a C-clamp to push the brake shoes in, this will allow you to install the new wheel cylinder.
7. Install the new wheel cylinder and brake shoes: Install the new parts. Ensure the cylinder is seated correctly and the clips are securely in place.
8. Reinstall the brake drum: Place the drum back on.
9. Reinstall the wheel: Tighten the lug nuts.
10. Bleed the brakes: This is *crucial*. Air in the brake lines can significantly impair braking performance. You'll need a brake bleeder kit and someone to help pump the brake pedal. Bleeding the brakes will remove air from the system. There are many helpful videos showing this process online.
11. Check for leaks: Carefully inspect all connections and the wheel cylinder for any leaks.
12. Lower the vehicle and test the brakes: Test the brakes very carefully in a safe area, ensuring they operate correctly.
Important Notes:
* Consult a repair manual: A factory service manual for your specific year and model of Dodge Ram is highly recommended. It will provide detailed instructions and diagrams.
* Brake system is complex: If you are not comfortable with this type of repair, take your vehicle to a qualified mechanic. A faulty brake repair can have serious consequences.
* Proper bleeding is essential: Improperly bled brakes are extremely dangerous.
This is a complex repair. Safety is paramount. If you're not mechanically inclined or unsure about any step, professional help is strongly recommended. The cost of repair from a professional is far less than the cost of an accident caused by improperly repaired brakes.
