Piston / Puck
Thread Starter
Three Wheelin'
Joined: Jan 2004
Posts: 1,313
Likes: 206
From: Darien, CT
Piston / Puck
Any ideas on how to remove the yellow puck from the piston without damaging the piston? I tried liquid wrench but no luck. It does have a lip to grab and I tried to use a needle nose pliers but it would not budge. I don't really have a good vice to hold the piston steady.
By the way it was a bitch to get all 6 pistons out of the caliper...... Not to mention the mess the fluid makes.
By the way it was a bitch to get all 6 pistons out of the caliper...... Not to mention the mess the fluid makes.
Rennlist Member
Joined: May 2007
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There was a thread recently here. See below. You probably have to buy new pistons and pucks, they're are connected. There is no known source for puck replacement only. I know this does not directly answer your question, but thought I'd share what I know as I will be doing this soon.
https://rennlist.com/forums/996-gt2-...ucks-rear.html
https://rennlist.com/forums/996-gt2-...ucks-rear.html
Thread Starter
Three Wheelin'
Joined: Jan 2004
Posts: 1,313
Likes: 206
From: Darien, CT
I have some extra replacements so in this case that is not the issue. I was just trying to figure out a way to get the broken one out so I can put in a replacement. Worst case scenario is I would use the broken one as is. The main thing is a level surface so the pads wear more evenly.
Thread Starter
Three Wheelin'
Joined: Jan 2004
Posts: 1,313
Likes: 206
From: Darien, CT
Any thoughts on how to remove the old puck from the piston? I tried a vise and used a soft rubber to protest the piston. However, even in a vice since the piston is round it was moving then I put on a lot of pressure to remove the puck. I don't want to mess up the piston and have to purchase after market ones. I can put in back as is. It has been broken at least for 3-4 track seasons and minimal effect -- just the pads don't wear evenly.
Maybe some special penetrating oil? or another process to loosen? Note, I do have replacement pucks -- just need to get the old pucks out of 2 pistons out of 20.
Maybe some special penetrating oil? or another process to loosen? Note, I do have replacement pucks -- just need to get the old pucks out of 2 pistons out of 20.
Rennlist Member
Joined: Dec 2010
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Any thoughts on how to remove the old puck from the piston? I tried a vise and used a soft rubber to protest the piston. However, even in a vice since the piston is round it was moving then I put on a lot of pressure to remove the puck. I don't want to mess up the piston and have to purchase after market ones. I can put in back as is. It has been broken at least for 3-4 track seasons and minimal effect -- just the pads don't wear evenly.
Maybe some special penetrating oil? or another process to loosen? Note, I do have replacement pucks -- just need to get the old pucks out of 2 pistons out of 20.
Maybe some special penetrating oil? or another process to loosen? Note, I do have replacement pucks -- just need to get the old pucks out of 2 pistons out of 20.
Thread Starter
Three Wheelin'
Joined: Jan 2004
Posts: 1,313
Likes: 206
From: Darien, CT
Hi powdrhound, that is what I was looking for! Bake at 400F for a feww minutes and monitor. Of course, it will have to try this when my wife is not in the kitchen otherwise, I will get a lot of grief for putting a car part on her baking sheet.
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Thread Starter
Three Wheelin'
Joined: Jan 2004
Posts: 1,313
Likes: 206
From: Darien, CT
Piston / Puck - Update
Well, the baking did the trick!!!
I did the smaller piston first at 400 degrees for around 3 minutes. The puck just came off with little force. I tried the same thing for the largest puck and it did not work so I put it back in the oven for 5 more minutes and same off like the other one with little force.
So, tomorrow I will put them into the caliper with the new yellow pucks.
Thanks powdrhound for the idea.
I did the smaller piston first at 400 degrees for around 3 minutes. The puck just came off with little force. I tried the same thing for the largest puck and it did not work so I put it back in the oven for 5 more minutes and same off like the other one with little force.
So, tomorrow I will put them into the caliper with the new yellow pucks.
Thanks powdrhound for the idea.
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From: SoCal
I was going to suggest heat as this is what causes them to separate.
Get these 997.352.086.91 you will need 1 per piston, this is a motorsport part (any shop with a motorsport account can get them), puck holder clip see post 26:
https://rennlist.com/forums/997-gt2-...ml#post9450471
Get these 997.352.086.91 you will need 1 per piston, this is a motorsport part (any shop with a motorsport account can get them), puck holder clip see post 26:
https://rennlist.com/forums/997-gt2-...ml#post9450471
Thread Starter
Three Wheelin'
Joined: Jan 2004
Posts: 1,313
Likes: 206
From: Darien, CT
After the pucks have been in for a long time it can be difficult to keep them in without falling out. The newer ones seem to snap in better. For a few of the old ones I used glue so they would not fall out during installation.
Some of the old ones are had a solid seal like the broken ones I could not pry out.
In the attached picture 2 were glued in (to replace the broken ones) and 3 snapped in and seemed to be firmly in place. One was in the caliper before and it was securely attached.
Some of the old ones are had a solid seal like the broken ones I could not pry out.
In the attached picture 2 were glued in (to replace the broken ones) and 3 snapped in and seemed to be firmly in place. One was in the caliper before and it was securely attached.