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I just finished replasing the front brake pads and rotors on my Chevy Malibu and everything was a success except there is air in the line. For some reason I cant figure out how to bleed the two front calipers. I need your help
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Air in the system is what usually causes a caliper to lock up when everything else is functioning properly. If you can't get the air out of the system you will continue to have issues because when the brake system starts getting hot, the air expands inside the brake system causing the weakest brake to be applied. You will need to bleed the brakes once you fix the caliper that is not able to be bled. Remember, bleed the brakes from the farthest wheel from the master cylinder first and then continue to the nearest wheel last.
First you want to remove brake fluid from brake resovoir, raise front wheels off ground and set park brake or block rear wheels. Remove front wheels, keep steering wheel unlocked so you can turn rotors side to side. Loosen bolts that hold caliper end gently pry caliper free from rotor, remove caliper and remove pads, use bungy cord to hang caliper away from rotor, have rotors measured to see if they are thick enough to have machined, replace if out of specs. Match up pads with old ones, use anti- squeak red liquid and put layer on back of pads, let dry. Use tool to put pistons back into calipers, slowly put pistons back into bore while opening up bleeder screw so ABS won't be damaged. After rotors resurfaced, wash with rubbing alchohal to remove any oils from hands, install rotors and reverse putting pads back onto caliper and reinstall, torque caliper bolts to factory specs and tighten bleeder screws. Install wheels, torque lug nuts to factory specs and replace brake fluid in resovoir. Lower car carefully to ground and press brake peddle without pumping it. Any air in system should bleed out, if not get someone to help with bleeding system. Road test to ensure no squeaks or pulling, burn brakes in slowly.
no,to gravity beed just open bleeder remove master cylinder cap & dont let it go empty. if you only opened the front you may just need to bleed the front.some times pumping up brakes before bleeding will help start the gravity bleed.
YOU NEED A PISTON COMPRESS TOOL TO PRESS PISTON BACK IN THE BORE WITH THE BLEEDER SCREW OPEN ON THE CALIPER*.CLOSE BLEEDER SCREW JUST BEFORE THE CALIPER PISTON IS PUSHED FULLY INTO CALIPER.THIS WILL ALLOW ROOM FOR NEW BRAKE PADS AND CALIPER FIT OVER THE BRAKE ROTOR.WHEN FINISH.PUTTING BRAKE PADS ON YOU HAVE TO BLEED BRAKE SYSTEM.DONT DRIVE VECHICLE IF YOU CANT GET A GOOD FIRM BRAKES.
Take off wheels, using a screwdriver pry between pad and rotor to push cylinder into caliper. Remove bolts holding caliper on rotor, remove old pad, replace with new pad, put caliper back on rotor. replace wheel, repeat other side. Als check rotor for wear, if bad get new rotors, always replace as a set
Buy a repair manual for the vehicle from your local auto parts store...they are under $20. The repair manual will show you step by step what needs to be done and more than likely has a few pictures to help out. Trying to write it out step by step here would take a long time and would be at least a few pages long.
Stuff to buy: New Calipers New Rotors New Brake Pads Brake Fluid Brake Cleaner Repair Manual If the pads do not come with new clips, you may have to buy 2 of them. Grease
Basic Tools needed: Hex Wrench Set Basic wrench set Socket Set Tire Iron Floor Jack and Jack Stands Hammer might come in useful, along with a bigger regular screw driver. C-Clamps Sand Paper/Steel Brush Rags A helper to bleed the brakes.
If vehicle has ABS, that system also might need to be bled...repair manual will let you know.
Before installing the new rotors, spray/wipe them down good with brake Cleaner...they are oiled for storage/shipping.
Check for clearance between the rotor and the caliper,and caliper to the rim.Make sure one ,or more of the brake pads where not accidently put on backwards,with the metal on the rotor,it happens sometimes.
disc brakes on the rear of a vehicle have a screw out mechanism that attaches to the ebrake . this means that you must turn the caliper piston to recess into the cylinder.
open the bleed screw to make it move eazier.
The binding of the brakes is causing the pads to overheat, which is causing the smoke. You need pull the wheel and check things out. Your caliper must be bad (not releasing). You need to replace the caliper, brake pads, and have the rotor cut (a full service parts store or shop cuts the rotor perfectly smooth on both sides), or replaced (it may be cheaper to just buy a new rotor). You should also always change the pads (and check everything else) on the opposite side. So, if u do the brakes on the driver side front, always do the front pass. side at the same time, likewise if u do rear brakes. Whenever you do brakes u should also flush out the brake lines (by bleeding the brakes) until the brake fluid flows absolutely clear. Old brake fluid is the #1 reason for caliper failure. I've seen many times people replace brake components w/out changing the brake fluid, only to have the brakes wear out very quickly, or not function properly. good luck! hope this helps> please rate this!couontrycurt0
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