Brake Calipers:
The brake caliper is the assembly that houses the restraint and pistons. The pistons are usually the product of plastic, aluminum, or chrome-plated steel. Calipers are of two types, floating or fixed. A set caliper doesn’t move relative to the disc and is thus less tolerant of disc imperfections. It uses one or more pairs of opposing pistons to clamp from all sides of the disc and is more complex and expensive than a floating caliper.
Floating Caliper:
A floating caliper (also called a “sliding caliper”) moves concerning the disc, along a line parallel to the axis of rotation of the disc. A piston on one side of the disc pushes the inner brake pad until it makes contact with the braking surface, then pulls the caliper body with the outer brake pad the pressure is applied to either side of the disc. Floating caliper (single piston) designs are subject to sticking failure, caused by dirt or corrosion entering a minimum of one mounting mechanism and stopping its normal movement. This causes the caliper’s pads to rub on the disc when the brake isn’t engaged or engaging it at an angle. Sticking may result from infrequent vehicle use. Failure of a seal or rubber protection boot allowing debris entry, dry-out of the grease within the mounting mechanism, and subsequent moisture incursion resulting in corrosion, or some combination of those factors.
Consequences:
Consequences may include reduced fuel efficiency, extreme heating of the disc, or excessive wane of the affected pad. A sticking front caliper may additionally cause steering vibration. Another variety of floating caliper is a swinging caliper. Rather than a pair of horizontal bolts that allow the caliper to maneuver straight in and out respective to the car body, a swinging caliper utilizes one, vertical pivot bolt located somewhere behind the axle centerline. When the motive force presses the brakes, the brake piston pushes on The within piston and rotates The full caliper inward, when viewed from the highest.
When you think of how to change brake caliper, it might look difficult and consider as a major repair. But in actual sense it is not at all hard and in fact can be repaired in a few hours. The reason behind changing the brake calipers is due to caliper’s cylinder boot breaks. The cylinder boot is a part of the caliper. It is a fluid that is essential when the cylinder pushes the brake pads. It is against the rotors to make the vehicle stop.
Following are the steps to change the brake calipers
Set up
Before replacing the brake calipers there is an essential and utmost requirement that is set up. Where we are replacing the brake caliper, we need to jack the vehicle up on the side. Secondly, we need to place the jacks stands beneath the vehicle. Then remove the wheel and place container under the brakes to nab the brake fluid.
Removal of old calipers
Next is to remove the brake calipers. We need to remove the bolt that attaches the brake line to the caliper. To hold the caliper, there are basically two bolts. If there is any difficulty in removing the bolts due to insufficient space.
You can turn the steering wheel to make sufficient space. After the bolts are out, take a rubber mallet and carefully tap the caliper off the rotor. Then remove the old brake pads and keep them aside.
Replace new caliper
You need a C-clamp and small board and place the board over a cylinder. Take off the c clamp and tighten it until the cylinder is properly placed in. The utmost requirement is to insert the bleeder nut which is alike grease fitting into the hole of the caliper.
Then put the brake pads back into the caliper in the same way they come out. Then replace the bolts and reattach the brake line into the caliper.
Bleeding the brakes
We need someone to get inside the vehicle when we bleed the brakes. We need to identify the area where we can add brake fluid and begin adding fluid. The person inside the car needs to compress the brakes three times.
They have to hold the pedal all the way down on the third pump. After that, we can lose the bleeder nut not much but a little. The requirement is to allow the air to come out of the line.
We have to repeat the steps until we are successful in removing air from the line. Then take a test of your brakes and top off the brake fluid in your driveway before you enter traffic.
Extremities to note down:
- Do not drive hastily especially when you are testing the brakes.
- Turn on the hazard lights while testing in case there is an emergency.
- Do not drive a vehicle on a busy street as there are chances of any sort of mishappenings if the brakes are not working properly.
- If you feel your brakes are soft, just press them till it touches the floor and needs to bleed the air out.
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