Retracting Brake Caliper Pistons
#1
Le Mans Master
Thread Starter
Retracting Brake Caliper Pistons
How are you guys retracting the caliper pistons with these cars? My daily driver has calipers that resemble the C7 calipers and I need to replace my pads. My daily has nicely painted calipers with pistons on both sides. I don't want to use a c-clamp because it will probably damage the finish and I can't use one of the typical brake spreaders I see at Harbor Freight because the calipers are solid on both sides and I can't run a threaded rod through the outer side.
#2
Le Mans Master
When I replaced my pads I simply used two large nails (for a long flat surface) and pushed the pistons in by hand. It doesn't take much pressure to do so.
#4
Tech Contributor
Member Since: Oct 1999
Location: Charlotte, NC (formerly Endicott, NY)
Posts: 40,089
Received 8,928 Likes
on
5,333 Posts
I use a variation of this tool shown on Amazon:
Amazon has several different versions at slightly different prices.
If the brake pads have ears on them the tool can also be used on the pads to push the pistons back far enough to get the pads out of the caliper. Then just insert the tool in the caliper and it pushes opposing pistons into the caliper.
I have been using my tool for close to 10 years now.
Bill
https://www.amazon.com/Ztech-Installation-Spreader-Caliper-Piston/dp/B06ZZ25DHN/ref=sr_1_22?ie=UTF8&qid=1520010197&sr=8-22&keywords=brake+caliper+compressor
Amazon has several different versions at slightly different prices.
If the brake pads have ears on them the tool can also be used on the pads to push the pistons back far enough to get the pads out of the caliper. Then just insert the tool in the caliper and it pushes opposing pistons into the caliper.
I have been using my tool for close to 10 years now.
Bill
#5
Burning Brakes
you can use a paint mixer wooden stick that you get for free at the paint stores between the painted caliper and c-clamp
or a piece of cardboard box folded 3 times over would suffice
Both options FREE, FREE, FREE who does not like FREE?
or a piece of cardboard box folded 3 times over would suffice
Both options FREE, FREE, FREE who does not like FREE?
Last edited by smajicek; 03-03-2018 at 12:37 PM.
#6
Race Director
2 large screwdrivers on the old pads to push them apart.
#8
Sr.Random input generator
#9
E-Ray, 3LZ, ZER, LIFT
Member Since: Sep 2007
Location: NE South Carolina
Posts: 29,492
Received 9,622 Likes
on
6,626 Posts
FWIW, was planning to use the same very stiff paint scrapper I modified to separate my early 2014 Z51 pads from the very strong, high temp double sided tape used on the pad back. Not easy to get them to separate, took a hammer! That tape was only used on the front pads and was eliminated ~half way through 2014 production. Funny, 3M makes the tape but was of no help on suggestions for removing!
Would have used the stiff scraper on the rotor/pad interface, then a wood wedge. Changed pads on my Grand Sport twice but with relatively new pads did not need to push them back other than a small amount with my fingers.
Method used to separate the front pads on my early 2014 Z51 from the high temp, double sided tape from the pistons. Commonly used in Europe but eliminated mid 2014 production, thank goodness!
Would have used the stiff scraper on the rotor/pad interface, then a wood wedge. Changed pads on my Grand Sport twice but with relatively new pads did not need to push them back other than a small amount with my fingers.
Method used to separate the front pads on my early 2014 Z51 from the high temp, double sided tape from the pistons. Commonly used in Europe but eliminated mid 2014 production, thank goodness!
Last edited by JerryU; 03-06-2018 at 07:27 AM.
#10
large channel locks and rags. Squeeze. If you can't figure out how the spread the pistons you probably should't be touching your brakes.
Last edited by BrunoTheMellow; 03-04-2018 at 10:35 AM.
#11
Melting Slicks
My big manly hands. They're actually not that big or strong but they work just fine. Rears are simple. Fronts take some effort.
#12
Someone asking a question about the proper tool to use for a procedure and you infer by that question said person doesn't have the necessary skill to perform the procedure? And you recommend using a large channel lock and rags on nice Brembo calipers?
#13
hell, you could do it with your fingers on the old pads!
#14
Melting Slicks
On the 6 piston front calipers on a Grand Sport/Z06, is there any reason you cannot retract one or two pistons on one side first and then the remaining ones instead of all three together? Finding a 6 piston spreader is eluding me.
#15
E-Ray, 3LZ, ZER, LIFT
Member Since: Sep 2007
Location: NE South Carolina
Posts: 29,492
Received 9,622 Likes
on
6,626 Posts
^^^^
Yep, they are all connected hydraulically. Push in on one the others pop out! It's a game of Whack-A-Mole!
Yep, they are all connected hydraulically. Push in on one the others pop out! It's a game of Whack-A-Mole!
Last edited by JerryU; 08-08-2018 at 12:26 PM.
#16
Sr.Random input generator
If you open the reservoir cap in the engine bay, you'll be reducing the back pressure, and pushing more of the fluid up there than just moving it to next piston, so your whack-a-mole can be finished sooner : )
The following users liked this post:
JerryU (08-08-2018)
#18
Safety Car
I use a variation of this tool shown on Amazon:
https://www.amazon.com/Ztech-Install...per+compressor
l
https://www.amazon.com/Ztech-Install...per+compressor
l
If money is no object this is ultimate spreader (or so I've been told): http://www.girodisc.com/Caliper-pist...er_p_5970.html
#20
Pro
Interesting responses. I track my car a lot so I'm always swapping between track and street pads. I just push in the old brake pad with my hands till there is room for the new brake to drop in?