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pilot bearing removal
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Scorpio  



Joined: 05 Jul 2007
Posts: 1957
Location: Brisbane, Australia

PostPosted: Tue Dec 21, 2010 8:37 am    Post subject: pilot bearing removal Reply with quote

Absolutely the most anoying thing ever

Notice 20kg weight on slide hammer---bent nail-- bent slide hammer puller handle

looks worse then it is but i dont think i ruined the interference fit of the old hole

ended up just grinding it out--4-5 hrs of BS


















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Rich H  



Joined: 10 Jun 2007
Posts: 2665
Location: Preston, Lancs, UK

PostPosted: Tue Dec 21, 2010 10:10 pm    Post subject: Reply with quote

Grind - it's the only way.
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peterld  



Joined: 10 Dec 2006
Posts: 946
Location: Noosa Heads QLD Australia

PostPosted: Tue Dec 21, 2010 10:48 pm    Post subject: Reply with quote

Scorp.......love those Chinese safety boots! Pretty shade of white....must be food service grade.
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fiat22turbo  



Joined: 18 Jan 2006
Posts: 4040
Location: Portland, OR

PostPosted: Wed Dec 22, 2010 5:11 am    Post subject: Reply with quote

Huh, mine came out without grinding:

http://www.924board.org/viewtopic.php?t=32178 (see bottom of the thread)

You just need the proper tools (A long bolt/stud, a couple of nuts, a large washer and a plumbing adapter), a little heat to expand the outer metal and a cooling spray to contract the inner portion.

Finally, patience is the key. Going slow and making sure you don't strip the threads. Use a standard ratchet and gently apply more and more pressure until it begins to move.
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1979 924 Carrera GTS (clone-ish)
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poorsha924  



Joined: 13 Nov 2007
Posts: 143
Location: Kansas City Mo

PostPosted: Wed Dec 22, 2010 6:29 am    Post subject: pilot bearing removal Reply with quote

Its a little late now but next time notice there is a threaded hole in the pilot beraing I believe it is 10MM, thread a long bolt into it & tighten the bolt it will bottom out on the end of the crank & pushes the pilot bearing out much easier
poorsha924
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Rich H  



Joined: 10 Jun 2007
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Location: Preston, Lancs, UK

PostPosted: Wed Dec 22, 2010 6:52 am    Post subject: Reply with quote

Or it'll just rip the threads out of the pilot bearing housing.... like mine did.
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Scorpio  



Joined: 05 Jul 2007
Posts: 1957
Location: Brisbane, Australia

PostPosted: Wed Dec 22, 2010 11:56 am    Post subject: Reply with quote

Rich H wrote:
Or it'll just rip the threads out of the pilot bearing housing.... like mine did.
as did mine.... And the majority of people who have tried 'porsches' method

Heating may have worked when the crank was off but I unfort didn't do it then and if I did it now I would have damaged the rubbery seal
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leadfoot  



Joined: 11 Dec 2002
Posts: 2222
Location: gOLD cOAST Australia

PostPosted: Wed Dec 22, 2010 11:17 pm    Post subject: Reply with quote

Is the turbo pilot bearing the one that sits in the flywheel or is there another that sits inside the crank too?
Stu
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Rich H  



Joined: 10 Jun 2007
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Location: Preston, Lancs, UK

PostPosted: Wed Dec 22, 2010 11:33 pm    Post subject: Reply with quote

Turbo sits in the fly only, N/A bearing case sits in the crank only.
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fiat22turbo  



Joined: 18 Jan 2006
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Location: Portland, OR

PostPosted: Thu Dec 23, 2010 6:08 am    Post subject: Reply with quote

Scorpio wrote:
Rich H wrote:
Or it'll just rip the threads out of the pilot bearing housing.... like mine did.
as did mine.... And the majority of people who have tried 'porsches' method

Heating may have worked when the crank was off but I unfort didn't do it then and if I did it now I would have damaged the rubbery seal


The heat won't hurt the seal as long as you only heat the center of the crankshaft. You don't need to make it cherry red, just warm enough to expand a bit, then hit the center with a cool spray to cause it to contract quickly to reduce the friction and any corrosion that may contribute to holding it in place. Do it a few times quickly, back to back and it should make it a little easier to remove without destroying it.

A little PB Blaster (not WD-40, which is a lubricant, not a product for breaking up rust) or similar corrosion reducing liquid. Diesel fuel and ATF supposedly work better than anything on the market for breaking rusty parts free.

Also, you don't turn the bolt to push the pilot bearing housing out using the threads, you use the threads to hold the bolt while you use the nut against the washer to pull the piece out.
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Slam  



Joined: 07 Jan 2005
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Location: Wainwright, Alberta, Canada

PostPosted: Thu Jan 20, 2011 8:03 am    Post subject: Reply with quote

Well, Scorp, you didn't read the How-To section like a good little mechanic. Stefan posted a great procedure after I'd put up some stuff.

Still, you got it out and that's what matters.

http://www.924board.org/viewtopic.php?t=32178
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Julian  



Joined: 24 Jan 2011
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Location: Oxford Ohio

PostPosted: Wed Jan 26, 2011 1:29 am    Post subject: Pilot Reply with quote

Heat around the outside of the hole can help. There is an old trick that works sometime. Fill the hole with the most thick bearing grease you can find, take the input shaft from an old tranny or a solid bar the same size as the input shaft.
Drive the input shaft or the bar into the pilot hole with a large hammer. The grease will be driven under the backside of the bearing and hydrolyticly move the bearing outward. Will not work ALL the time, but worth a try before frustration takes hold.
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Scorpio  



Joined: 05 Jul 2007
Posts: 1957
Location: Brisbane, Australia

PostPosted: Wed Jan 26, 2011 1:44 am    Post subject: Re: Pilot Reply with quote

Julian wrote:
Heat around the outside of the hole can help. There is an old trick that works sometime. Fill the hole with the most thick bearing grease you can find, take the input shaft from an old tranny or a solid bar the same size as the input shaft.
Drive the input shaft or the bar into the pilot hole with a large hammer. The grease will be driven under the backside of the bearing and hydrolyticly move the bearing outward. Will not work ALL the time, but worth a try before frustration takes hold.
Tried it-- no luck, our pilot bearings don't have a decent sized inner face surface area like a normal bearing
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1979 NA
MS1..EFI..
GARRETT T25 TURBO
BILSTEIN SHOCKS
GT BASED CUSTOM BODYKIT

Brisbane , Australia
Think mean think fast
all youll see is
my Porsches Arse!!!
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Joes924Racer  



Joined: 03 Nov 2002
Posts: 11964
Location: Oregon, Denver Colorado native!

PostPosted: Fri Mar 18, 2011 6:55 am    Post subject: Reply with quote

... Its not here.
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sbarc  



Joined: 01 Feb 2010
Posts: 545
Location: West Coast of Canada

PostPosted: Sat Mar 19, 2011 1:32 pm    Post subject: Reply with quote

Wouldn't a pilot bearing puller be easier?

Here's one for $16.00

http://www.tooltopia.com/mountain-9001.aspx?utm_source=nextag&utm_medium=cse&utm_term=MTN9001&utm_campaign=nextag_r1

The one I use is more expensive.....it's a Toyota Special Service Tool (SST).....I bought it long ago and I've done dozens of clutches with it. The pilot bearing just slides out as easy as can be.

http://www.costplustools.com/OTC-Toyota-09303-35011-PILOT-BEARING-PULLER-Supra_p_8636.html
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