Cant compress rear caliper cylinder on 2001 Kia Optima
I am trying to change the brake pads on my sons 2001 Kia Optima. When I try to compress the caliper piston it does not move. I have gotten conflicting information saying that thes calipers require them to be turned at the same time they are being pushed in. The piston does not have any notches which typically indicate they require turning. Any help would be greatly appreciated!
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Re: Cant compress rear caliper cylinder on 2001 Kia...
Hi if the hand brake is operated with the brake caliper too then yes it will be a wind back if you do not have a tool you can use large grips and turn the piston clockwise beingcarfull not to damige the dust seal and after a few turns then push the piston back it will move but slowly
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i hope you took the caliper off the bike otherwise youll never get the pad in there. caliper rides on bushings that should be greased anyway. youll see when you get it offa there. thats how the caliper floats.
1. Park on a flat and level surface. Apply the parking brake. Secure the vehicle by wedging something behind the wheels to prevent the vehicle from rolling. 2. Use a syringe, turkey baster or similar tool to siphon out the brake fluid from the master cylinder reservoir until it's approximately one third full. You can't reuse the old fluid, so you'll need to dispose of it. 3. Remove the wheel and the caliper guide pin bolts. Lift the caliper away from the rotor. Suspend the caliper from the frame using mechanics wire. Remove the brake pads and retainer spring from the caliper. Compress the caliper piston into the bore. 4. Reinstall the brake pads. Place an anti-squeak product on the outside of the brake pads, making sure not to get any of this on the inside of the brake pads. Reinstall the retainer spring to the caliper. Reinstall the caliper in position on the caliper support bracket. Reinstall the guide pin bolts. Reinstall the wheels. 5. Add brake fluid. Start the engine and pump the brakes 3 to 4 times.test drive at slow to moderate speeds to ensure worked correctly.
Did you notice the brake fluid level in the master cylinder before you tried to collapse the calipers? You should see a rise in level as you collapse them (however far they did collapse). If you're not seeing any change in the level (it should fill up) you might have a plugged valve between the caliper and the master cylinder. Loosen the brake fluid line to the caliper and try collapsing it again. If still no go, start dismantling the caliper and look for bent, broken, stuck or mal-adjusted pieces.
no that is only the older rear calipers on gm and others. the fronts do not have that style caliper and sound like the calipers are frozen and may be way your changing the pads. try opening the bleeder screw and then compressing them if they go then you need need brake hoses and if not you need calipers. god luck man
IF THERE ARE 2 PRONG OR TAB LOOKING THINGS IN THE PISTON THEN THE PISTONS NEED TO BE SCREWED IN TO MOVE BACKWARDS TO ALLOW BRAKE PAD TO FIT..DO NOT COMPRESS THEM WITH A C-CLAMP OR IT IS BAD..ANY AUTO PARTS STORE CAN LOOK AT THIS AND TELL YOU FOR SURE..SREW TO THE RIGHT TO COMPRESS