Question about 2002 Kia Sedona

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Changing brake callipers

Cylinder froze I think. I can't press them. Want to put new callipers on. Is it simple

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Pressing by disc brake caliper cylinder by hand unlikely, improbable. Using 10" jaw opening adjustable pliers with 12"~16" handles, with brake pads removed should be able to align a large socket inside the plunger cup and then using the large adjustable pliers, squeeze back very slowly just enough to install new disc pads. Forcing the cylinder cup to its fully retracted position not necessarily a good ideal unless you have some express need or purpose to do so as it will overflow your brake fluid reservoir. So be prepared with a clean new "turkey baster" and a clean jar to suction out of the reservoir of sufficient brake fluid to make room for the fluid you are forcing back to the reservoir. Since the cylinder sets in a rubber collar, very unlikely its rusted "frozen" in position. It is possible for the rubber collar to either deteriorate or be damaged, so look carefully at what you can see of the rubber collar with a magnifying glass, looking for any micro-cracks or signs of rubber dry-rot - - if found, replace, your life may depend upon it.

When finished installing new caliper pads with brake grease properly installed at points of metal to metal movement and retainer bolts properly torqued, and brake fluid reservoir properly filled, your first press of the brake may go all the way to the floor and you may need to pump the brakes several times to fully expand the caliper that you pressed backwards to its proper position. That may require refilling the brake fluid reservoir several times. If after pumping the brakes and getting a solid petal, it may be necessary to drive the vehicle backwards stomping on the brakes several times to set the rear brake shoe adjusters and raise the height of your brake pedal. If after replacing the calipers and adjusting you still have a spongy petal, it may be necessary to bleed air out of the brake lines for which there is an air bleed valve on each brake cylinder. Air bleed easiest accomplished with 2 people though devices are made for one person air bleeding. During air bleeding, the brake petal is slowly depressed and the air bleed valve momentarily opened. The end of the air bleed hose needs to be in brake fluid in a jar so that ejected brake fluid is captured and air cannot return. Using a clear air bleed hose lets you see when a solid flow without bubbles is released, then you have a good air bleed and can retighten the valve. You will need to refill the brake fluid reservoir several times during the air bleeding procedure. All four wheel cylinders must be air bled if any one or more brake cylinder opened or replaced. Any sign of a "wet" looking brake line or cylinder is a good reason to replace it even if you cannot identify the exact leak source.

Posted on Jul 27, 2014

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How to change back brakes? I can't get the brake cylinder to go in.


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To change pads you need to use a rear brake pads changing tool to screw in the calliper piston or if you are experienced enough you could screw in the calliper with a two mm thick piece of metal sheeting that fits into the grove of the piston.
If you need to replace the whole calliper remove the hand brake cable first and clamp the flexible brake hose remove brake hose, remove the callier with cylinder and then remove the calliper holder. fit new holder pads and locks and the calliper with the piston and the brake hose and the hand brake cable. Bleed the brakes. Mike

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Well,

I fill you in what I learned today. I have a 2005 S-Type Jaguar and the dealer sayed it needed new pads in the rear. They wanted $300 just for the pads and another $150 or so to install. That $450 bucks to replace the brake pads only on the rear of the car. And of course, the extended warranty doesn't cover this, so I said no thanks. I found the best brake pads from Napa for $52. I purchased them through my brothers shop- saved a little. I done lots of brake pad replacements over the years, but not on a new car like the Jaguar. Well they are a little different and the frist one took me awhile . Here is the trick. 1) MAke sure the parking brake is off and you do this by starting the car, stepping on the normal brake and then pushing the parking break lever down while shutting off the car. 2) You then take the tire off, use jack stands to ensure safety.3) Take off brake callipers, 2 bolts and the brake pads should just fall off.4) take the anti-rattle plate off the old pads by prying it off carefully with a tiny screw driver- clean and then install on the new ones. 5) Here I release the the valve for the brake fluid. I did not want to damage the system if the fluid went back into the system when I retracted the calliper. You use some fluid, but you can add when finished. 6)You either need one of those brake calliper tools that you push the calliper in with and If you don't have the trick new one with the keys to turn the brake calliper cylinder, you can get by with the old version like I did and use a pair of channel locks to turn counter clockwise, while continuing to turn the tool. The cylinder needss pressure on it while you turn. This will put in in the proper place. 7) Ensure you have the slots up and down so that the pin in the pad fits up into the cylinder. you know this is correct when you have it perfect vertical and center within the calliper. Pay attention when taking off! 8) Set the brake pads in their proper place and then slide the calliper over them. IT should go over freely or else you need to turn more on the cylinder. 9) Tighten the bolts and replace the tire and you are done. Next side!
Hope this helps. -Dave @ dchristi@zianet.com

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