Rear Brake Plunger - Compression
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1st Gear
Joined: Apr 2007
Posts: 419
From: San Luis Obispo CA
Rear Brake Plunger - Compression
ok so i read this artile on how to replace the brake pads on an a4
rear brake DIY
i undestand the compresion of the rear plungers do not simply push in and screw in AND PUSH IN.
and you need one if these to do it correctly
BUT in the article it states that
and there was a counter quote of this
my question to YOU GUYS IS THIS :
i am replacing old pads... with brand new. the calipers needs to be pushed back quite a bit. does anyone have any experience with this. can i improvise? i know i would be better with buying a tool. but i dont have a whole bunch of time. i am leaving town tomorrow afternoon. is it possible improvise when i have to push in the caliper a good distance. please help. thanks in advance
rear brake DIY
i undestand the compresion of the rear plungers do not simply push in and screw in AND PUSH IN.
and you need one if these to do it correctly
BUT in the article it states that
The back caliper piston doesn't push in, it screws in. You need to improvise a tool to do this. There is a slot on each side of the piston to grab with a tool and twist. (Screwing clockwise pushes the piston back into the caliper). Mine needed about half a twist or a little more. The tool I used was just a pair of needlenose pliers. I held the points open to fit the slots in the piston and after a little trial and error found a way to hold them to get the necessary torque. (It takes a fair amount of force and the piston should turn slowly and smoothly).
This may work if you are replacing almost new with new. However, if your brakes are old/warn, this will not work. The correct tool actually requires a turning AND pressing to get the piston pushed back into place. The piston will not screw in without the special pressing tool.
i am replacing old pads... with brand new. the calipers needs to be pushed back quite a bit. does anyone have any experience with this. can i improvise? i know i would be better with buying a tool. but i dont have a whole bunch of time. i am leaving town tomorrow afternoon. is it possible improvise when i have to push in the caliper a good distance. please help. thanks in advance
Senior Member
Joined: May 2006
Posts: 491
From:
RE: Rear Brake Plunger - Compression
Go to autozone and rent their brake caliper piston retraction tool kit. It's like $35 dollars and you get it all back when you return it. You can't improvise pushing that thing back too well. I tried and thought my piston was stuck and ordered a caliper from a junk yard. It was a waste of money because I got the kit the next day and it took care of it just fine. The piston retracts with both twist AND push.
1st Gear
Joined: Mar 2008
Posts: 95
From:
RE: Rear Brake Plunger - Compression
Haven't done it yet on a Audi, but on every other car I have owned I have used a c-clamp to compress the piston. It will turn as it compresses but you do need a flat surface behind for the other end of the clamp so I don't know if it will work on the Audi. Be sure to remove the cap on the reservoir and remove some of the fluid if it is too full before you start compressing pistons.
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n_gunjan
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