There are some elementary steps that need to be observed to repair brake cylinder of the car. The brake cylinder of a car is the central storage of brake fluid. The piston, fitted into the central bore of the cylinder, is pushed in by pressing the brake pedal resulting into a hydraulic pressure in the fluid. This hydraulic pressure halts the automobile by transferring this pressure into the brake system. Many things can cause damage to the brake cylinder, however. Most frequent is wear and tear in the long run. To repair the cylinder, some specific tools are needed and a keen observation to comprehend the automotive parts arrangement. Though this article will look at a rear drum brake system. However, a car using a disc brake and caliper has a similar theory behind it. The only difference being is that to get to the piston, you only need to take out the caliper from the disc rather than have to disassemble an entire drum brake. In most cases it is recommended to replace the entire brake cylinder rather than repair a faulty one.
Removing the Tire
Use the tire iron to unscrew the screws on the wheel in which the brake cylinder has to be replaced. When nuts on the wheel are not completely loose then use the car jack to put the car on the jack stand. Now remove the nuts from the wheel, remove the wheel and put everything on one side.
Take out the Brake Drum
The outer brake drum is seen once the wheel is removed from the axle. Align the access orifice of the drum with the screw for adjustment on the inner side by turning the drum. Use a screwdriver to loosen up the screw so that the drum is retracted. If this does not work then use a hammer to hit it out of its position, but don’t hit it too hard on the drum. If this doesn’t do the work then use the brake drum puller to take out the brake drum.
You can see smaller parts of the brake drum once it is taken out. There are two brake shoes with springs and a wheel cylinder within. The other vital parts include emergency brake arm and a return spring for the brake shoe.
Open Brake Shoes
To gain access to the wheel cylinder remove brake shoes or replace them if they are completely worn out. Check for leakage from wheel cylinder, if there is found any then change it immediately. Use a brake spring remover to remove the return springs from the brake shoe. Now with the brake shoe remover, take out one of the shoes while leaving the other undisturbed for reference.
Replace Brake Cylinder
Use line wrench to dislodge the wheel assembly from the brake line. Keep the drain pan under the brake cylinder for overflowing fluid. Loosen the nuts from the cylinder and pull it out of place. Install the new cylinder using the reverse method.
Reassemble the Brake Line
Use the line wrench to re-attach the brake line assembly. Put back the wheel assembly in its place as it was before.
Replace the Brake Shoes and Tire
Put back the retainer and return springs with the brake shoes. Depress the brake pedal a few times to push any air from the system. Place the wheel back on the car and drive slowly in an open area to check if everything is working fine