- 1 How do you remove a drum brake assembly?
- 2 How do you loosen a drum brake adjuster?
- 3 How do I disconnect my parking brake?
- 4 How do you know when drum brakes need replacing?
- 5 What is the biggest disadvantage of the drum brake system?
- 6 Why are drum brakes still used?
- 7 What would cause a rear drum brake to lock up?
- 8 What would cause a rear wheel to lock up?
- 9 How do you fix a stuck brake drum?
- 10 How do self adjusters work on drum brakes?
- 11 Which way tightens drum brakes?
- 12 How often should you adjust drum brakes?
How do you remove a drum brake assembly?
Unscrew the brake drum if needed.
- Use a screwdriver to remove the screws securing the brake drum to the wheel.
- Draw the brake drum forcefully towards you.
- Use a screwdriver and rubber mallet or a brake drum puller to take the drum off of the wheel if you are unable to remove the drum by unscrewing it and pulling it.
How do you loosen a drum brake adjuster?
Which way do you loosen drum brake adjuster?
- Locate the access hole on the outside of the brake drum.
- Turn the brake drum so that the access hole is aligned with the drum’s adjuster screw.
- Turn the adjuster screw counterclockwise until it comes to a halt.
- Pull the drum off of the wheel.
How do I disconnect my parking brake?
How to Remove an Emergency Brake Cable From a Caliper
- Lift the rear end of the vehicle using a jack then place it on jack stands.
- Locate the rear brake caliper.
- Hold down the locking tabs on the emergency brake cable using a flat head screwdriver then pull the cable out of the emergency brake bracket.
How do you know when drum brakes need replacing?
- Inconsistent brake pedal feel. If the rear brakes are drum brakes, the driver may feel vibrations under braking.
- Hand brake feels loose. If the hand brake requires a hard yank to keep the car from rolling off, chances are the brake shoes need replacing.
- Scraping noise while braking.
What is the biggest disadvantage of the drum brake system?
Drum brake disadvantages
- Excessive heating can happen due to heavy braking, which then can cause the drum to distort, and thus cause vibration under braking.
- Under hard braking, the diameter of the drum increases slightly due to thermal expansion, the driver must press the brake pedal farther.
Why are drum brakes still used?
Drum brakes lock-up the wheels easier and make better parking brakes than disc brakes. Those who enjoy doing handbrake turns may also favour rear drum brakes since they lock-up easier (self-energizing). Drum brakes are also smaller and lighter but these are not reasons why modern cars still use them.
What would cause a rear drum brake to lock up?
Rear drum brakes can lock for several reasons. One reason could be a defective wheel cylinder, which is part of the brake system. Your parking brake cable could also be adjusted too tight. The slightest pressure on the brake pedal, will then cause the brakes to work at full force, causing the lock up.
What would cause a rear wheel to lock up?
Brake shoe contamination can be the cause of rear wheel lockup. If an axle seal or wheel cylinder leaks and contaminates the brake shoe(s) it changes the coefficient of friction. If it is mild contamination then the friction is increased while severe contamination will cause a reduction in friction (See Figure 61.9).
How do you fix a stuck brake drum?
How to Troubleshoot Sticking Drum Brakes
- Park the automobile on a flat, level surface.
- Set the parking brake.
- Release the parking brake.
- Remove the drums on both rear wheels.
- Carefully examine the brake mechanisms on both wheels.
- Hold the adjuster lever off of the adjuster wheel and turn the wheel back and forth.
How do self adjusters work on drum brakes?
The adjuster uses the self-actuation principle we discussed above. As the pad wears down, more space will form between the shoe and the drum. Each time the car stops while in reverse, the shoe is pulled tight against the drum.
Which way tightens drum brakes?
Turning the nut on the cable adjuster clockwise will shorten the cable assembly, making it taut. Do this in a few increments at a time, as you don’t want to tighten the cable so much that it makes the shoes drag against the drum. You only want the shoes to engage when the parking brake lever is engaged.
How often should you adjust drum brakes?
So manual adjustment is usually necessary every 15k miles. You don’t have to pull off the drum to adjust drum brakes..