caliper rebuild tips?????

AS THE SNOW CONTINUES IN WESTERN MASS I'VE DECIDED TO REBUILD THE FRONT AND REAR CALIPERS ON MY 83SC.UNFORTUNATLEY THE BENTLEY MANUAL DESCRIBES THIS AS TO "IN DEPTH" FOR THIS MANUAL.IS THIS A SAFETY COP OUT OR IS SOMETHING VERY DIFFERENT IN REBUILDING MY P-CARS BRAKES? ANY ADVISE WILL,AS ALWAYS,WELL,MUCH THANKS IN ADVANCE. PHP..

I think Bentley left it out of the 911SC manual so that you would buy their seperate Brake Manual.

There is a good article on rebuilding calipers on the Pelican Parts Tech Articles. Lots of stuff in the archives too. I'm going to be doing the same thing soon (during pot hole season).



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Bill Krause
'79 911SC Euro

Hank,

Nothing unusual or difficult about the Ate brake calipers on Porsches, it's Bentley's legal department (liability) attitude that has changed in the past 25 years or so! If you want to see some good instruction on caliper rebuilding, go to your local library and see if they have any of the Bentley manuals for air-cooled VW's from the '70s. Everything said about the VW Ate calipers applies to any year 911!

The 'brake paste' referred to in those '70s Bentley VW manuals is, if fact, identical to Dow Corning 4, 111, or 112, and should be used to lubricate the seals and pistons when reassembling the calipers, and master cylinders. Ate rebuild kits for master cylinders at one time contained a tiny tube of silicone grease ... about 1 cc!


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Warren Hall
1973 911S Targa

Rebuild is relatively easy as long as you do not attempt to split the caliper halves. The Pelican article is very informative and straightfoward. It's all you need to do a step by step rebuild.
I used the factory air compressor to "pop" out the pistons.

Dan Tolley
1987 911 Coupe

I just rebuilt my fronts. Pretty straightforward. It is described in a recent thread. I'd suggest doing the search and finding the thread. A c-clamp vice grip was very helpful. Keep your fingers clear when using air to get the pistons out. I used a poking tool like a detntist's pick to stab the old sealing ring and pull it out. This was the best method for this.

I used brake fluid as a lubricand and had the problem described in the thread (do the search), so I will be using Dow Corning 111 when I do the rears.

Pretty straightforward job.

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'83 SC

JUST WANTED TO SAY "THANKS" FOR THE REPLY'S GUY'S.WITH ALL THE NEW EXPERIENCES THAT THIS WINTER HAS BROUGHT IT'LL BE LIKE DRIVING A NEW CAR!!! PHP