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DZGunner
Joined: 18 Nov 2014 Posts: 191 Location: Great white north
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Posted: Sun Mar 29, 2020 1:39 pm Post subject: |
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So I'm at the point of needing to remove the pilot bearing in the crank, and I've been reading how to remove it for a while now but I don't really understand a few of the methods. Someone suggested packing grease in the back of the hole and inserting something the same diameter as the hole to make an airtight seal, then whacking said object with a hammer to force it out. Problem is... who the hell has something the exact same size as that hole... Open to suggestions. Thank you.
_________________ 1979 924 (Daily driver EFI)
1979 924 Sebring
1977 924
1977 924 (Parts) |
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Paul
Joined: 02 Nov 2002 Posts: 9491 Location: Southeast Wisconsin
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Posted: Mon Mar 30, 2020 3:27 am Post subject: |
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I use a clutch alignment tool.
I would replace that rear main seal. _________________ White 87 924S "Ghost"
Silver 98 986 3.6l 320 HP "Frank N Stein"
White 01 986 "Christine"
Polar Silver 02 996TT. "Turbo"
Owned and repaired 924s since 1977
Porsche: It's not driving, it's therapy. |
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DZGunner
Joined: 18 Nov 2014 Posts: 191 Location: Great white north
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Posted: Mon Mar 30, 2020 5:07 am Post subject: |
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I have a rear main coming in the mail . Also did you try the grease and hammer method; did it work for you? _________________ 1979 924 (Daily driver EFI)
1979 924 Sebring
1977 924
1977 924 (Parts) |
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Paul
Joined: 02 Nov 2002 Posts: 9491 Location: Southeast Wisconsin
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Posted: Mon Mar 30, 2020 7:10 am Post subject: |
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Yes many times over many decades including other makes of cars. _________________ White 87 924S "Ghost"
Silver 98 986 3.6l 320 HP "Frank N Stein"
White 01 986 "Christine"
Polar Silver 02 996TT. "Turbo"
Owned and repaired 924s since 1977
Porsche: It's not driving, it's therapy.
Last edited by Paul on Mon Mar 30, 2020 11:15 am; edited 1 time in total |
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Paul
Joined: 02 Nov 2002 Posts: 9491 Location: Southeast Wisconsin
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Posted: Mon Mar 30, 2020 7:16 am Post subject: |
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This guy uses bread!
https://www.youtube.com/watch?v=00OlG5E8vLk _________________ White 87 924S "Ghost"
Silver 98 986 3.6l 320 HP "Frank N Stein"
White 01 986 "Christine"
Polar Silver 02 996TT. "Turbo"
Owned and repaired 924s since 1977
Porsche: It's not driving, it's therapy. |
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DZGunner
Joined: 18 Nov 2014 Posts: 191 Location: Great white north
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Posted: Mon Mar 30, 2020 10:09 am Post subject: |
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So I tried the grease, and I used another clutch alignment tool that was from a different project with no success. I also read that the back of the insert is threaded, so I made my own sort of jig that was supposed to extract the insert the more you turned the center bolt. It started bending my jig, and when I supported it better, I actually got scared and just backed off because for a moment I thought I may have stripped the threads... Guess I'm trying bread... _________________ 1979 924 (Daily driver EFI)
1979 924 Sebring
1977 924
1977 924 (Parts) |
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Paul
Joined: 02 Nov 2002 Posts: 9491 Location: Southeast Wisconsin
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DZGunner
Joined: 18 Nov 2014 Posts: 191 Location: Great white north
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Posted: Mon Mar 30, 2020 12:32 pm Post subject: |
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I got it figured out. It uses the grease/bread/play-dough with the threaded bolt. I had to pack the play-dough behind the threads and then screwed a bolt in to get it to press it out. After fiddling with punches and hammers, i realized the thread had to be there for something, because there is no way you can get a punch to seal with the exposed bearing in there. I'll post pictures tomorrow. Thank you for the pointers Paul, it really did help. _________________ 1979 924 (Daily driver EFI)
1979 924 Sebring
1977 924
1977 924 (Parts) |
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DZGunner
Joined: 18 Nov 2014 Posts: 191 Location: Great white north
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Posted: Tue Mar 31, 2020 11:28 am Post subject: |
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So here are some pictures to illustrate how it worked out. It actually came out incredibly easy this way. No hammering or anything destructive. I simply put play-dough back behind the threaded part at the end of the pilot bearing insert and threaded an M12x1.5 bolt into the threads of the insert, which is very similar to the hammer method. Just turn the bolt in, take it out and pack more material in, and keep repeating until it just slides out.
Also you can see in the picture the seal came out at the front of the insert. This happened when I was trying to hammer the thing out. If I wasn't replacing it anyways, this could have been saved with the bolt method.
_________________ 1979 924 (Daily driver EFI)
1979 924 Sebring
1977 924
1977 924 (Parts) |
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DZGunner
Joined: 18 Nov 2014 Posts: 191 Location: Great white north
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Posted: Tue Mar 31, 2020 11:35 am Post subject: |
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Another small update: CV axles are painted and ready for grease. I'm still trying to find an end cap. The ones I ordered were 128 mm, and the ones on our cars are 100mm. The only 100mm end caps I could find were on http://race.parts/Catalogue/Drivetrain/CV-Joints/End-Caps/GKN-CV-Joint-End-Caps , but its foreign and unsecured so I'm not sure if I trust putting my information in to them. If anyone can vouch for this website being trust worthy, I'll buy one to test fit. Contacted EMPI for a possible end cap, waiting for a reply.
_________________ 1979 924 (Daily driver EFI)
1979 924 Sebring
1977 924
1977 924 (Parts) |
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safe
Joined: 18 Mar 2017 Posts: 592 Location: Sweden
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Posted: Tue Mar 31, 2020 3:07 pm Post subject: |
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Not only do they need to be 100mm, they need to fit inside the flanges.
Im not seeing them in the pictures, do you have the halv moon washers that goes under the bolts? |
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DZGunner
Joined: 18 Nov 2014 Posts: 191 Location: Great white north
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Posted: Wed Apr 01, 2020 4:01 am Post subject: |
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You talking about these?
_________________ 1979 924 (Daily driver EFI)
1979 924 Sebring
1977 924
1977 924 (Parts) |
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safe
Joined: 18 Mar 2017 Posts: 592 Location: Sweden
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Posted: Wed Apr 01, 2020 5:37 am Post subject: |
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Yes, those 😁 |
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MikeJinCO
Joined: 08 Jun 2010 Posts: 1228 Location: Maysville, Colorado
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Posted: Wed Apr 01, 2020 6:36 am Post subject: |
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The pilot bearing is a SKF BK 1012. 14mm od, 10mm ID it is the same as on a Ford Mustang 2 and available at any auto parts store. _________________ Mike
'67 MG Midget Dp
'71 Ocelot Dsr Kawasaki 1000(under rebuild) |
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MikeJinCO
Joined: 08 Jun 2010 Posts: 1228 Location: Maysville, Colorado
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Posted: Wed Apr 01, 2020 6:40 am Post subject: |
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The pilot bearing is an SKF BK1012, 14mm od, 10mm id same as for a Ford Mustang II and available at any FLAPS _________________ Mike
'67 MG Midget Dp
'71 Ocelot Dsr Kawasaki 1000(under rebuild) |
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