Whether replacing brake pads and/or rotors, the caliper pistons compulsion to be compressed To admit extent for the advanced components.
Compressing caliper pistons has been an inconsiderable Sufficiently assignment when replacing brake pads and/or rotors. On the contrary, the implementation of ABS brakes has somewhat changed the procedure. Whether the ABS transaction caliper pistons are compressed in the alike action as non-ABS caliper pistons, dirt, brake dust or other corrosives can be plunged into the hydraulic process, clogging the ABS process. Compressing the caliper pistons true adds a kid system to the procedure as far-off as the caliper bleeder screw opens and doesn't schism during the manner.
Instructions
1. Open the bleeder screw a half-turn until the air and fluid purge from the screw. Repeat this procedure until the brake pedal no longer drops to the floor and the fluid coming from the bleeder screw is a steady stream without air bubbles. Add more brake fluid to the master cylinder every four to five bleeder screw openings to avoid allowing the master cylinder to empty completely.
3. Manage the bleeder screw with a ratchet and compatible-sized socket by turning it counterclockwise until fluid begins to seep outside of the bleeder screw.
4. Applicability the C-clamp or quad caliper piston compression thing to compress the piston(s) slowly, allowing fluid to purge from the bleeder screw. While many vehicles authorize you to utilize these devices with the caliper yet bolted to the knuckle and caliper anchor meeting, there are some applications that hurting for removing the caliper from the meeting (affection many rear calipers that need screwing the caliper pistons in a clockwise fashion with a caliper reset thing utensils). Provided this is the action, remove the caliper bolts prior to resetting the caliper piston.
5. Allow the brake fluid to drain from the bleeder screw into the drain pan while compressing the caliper piston until the piston is fully seated in the caliper piston bore.
6. Tighten the bleeder screw with a box-end wrench when the respective repairs or reassembly procedure is complete.
7. Top the master cylinder off with the correct graded brake fluid for the vehicle. Most vehicles use DOT3 brake fluid. Replace the master cylinder cover.
8. Place an assistant in the vehicle to pump the brake pedal four to five times and then hold the brake pedal down.
9. Practice the brake hose clamp or crimp to the hydraulic brake hose as accelerated to the caliper as imaginable once the vehicle is hoisted and the tire(s) are removed.2. Abode the remove pan below under the knuckle and rotor meeting, and centre the pan under the field of the bleeder screw on the caliper. This can reverse the pressure suction cups in the master cylinder and damage the hydraulic component.
