 Stripped threads on shift coupling |
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| flipb |
 Jun 15 2020, 12:31 PM
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#1
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Senior Member  Group: Members Posts: 1,722 Joined: 2-September 09 From: Fairfax, VA Member No.: 10,752 Region Association: MidAtlantic Region 
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I took apart my shift linkage to install a clean transmission housing cover from 914 Rubber. The cone screw at the firewall linkage was already a bit wonky and in putting it all back together, I stripped what was left of the threads from the coupling u-joint.
I have one of these inserts from Auto Atlanta. How do I go about installing it? 1. Do I need to drill out the coupling? 2. What size drill bit? 3. Do I need to get a tap and die or is the insert self-threading? 4. And since the cone screw doesn't have a head, how do I get leverage to put in the insert? Do I need to get a screw of the same pitch? Anybody know what size screw? (and if there's anybody local to NOVA who wants to help me with this, I am relatively useless on my own. I'll buy you a six-pack.)  |
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| BPic |
Jun 15 2020, 12:36 PM
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#2
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Member Group: Members Posts: 341 Joined: 5-February 18 From: Miami, Florida Member No.: 21,864 Region Association: South East States
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I've never put one of those in but I believe I have an extra coupling I could send you.
Let me know, Brad |
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| UROpartsman |
Jun 15 2020, 12:57 PM
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#3
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Member Group: Members Posts: 291 Joined: 22-October 15 From: Simi Valley, CA Member No.: 19,288 Region Association: None
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No doubt George will chime in, but this is probably your basic game plan:
- Remove the coupling from the car. - Determine the thread size and pitch of the insert OD. (George will know.) - Drill and tap coupling to match insert OD. - Get a bolt with lots of threads that matches the insert ID threads, and a matching nut. Spin the nut onto the bolt slightly further than the insert is deep. Thread the bolt into the insert, then put on a wrench on the bolt head and tighten the nut against the top of the insert with a second wrench. You now have an insertion tool. - Apply red Locktite to insert OD (don't get any on the inner threads) and thread it into coupling using a wrench on the bolt head (or on the nut, doesn't really matter). - Wait a day for Locktite to set. Put wrench on bolt head to prevent insert from unscrewing, loosen nut with a second wrench, then unscrew the bolt from the insert. - Reinstall repaired coupling in car. |
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| sixnotfour |
Jun 15 2020, 01:08 PM
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#4
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914 Wizard Group: Members Posts: 10,430 Joined: 12-September 04 From: Life Elevated..planet UT. Member No.: 2,744 Region Association: Rocky Mountains 
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looks like a time-sert
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| 914Sixer |
Jun 15 2020, 01:53 PM
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#5
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914 Guru Group: Members Posts: 8,882 Joined: 17-January 05 From: San Angelo Texas Member No.: 3,457 Region Association: Southwest Region
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Somebody made a kit to do just what you need. I bought one at one point. It was a insert and a new screw. Not sure if I still have it.
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| GregAmy |
Jun 15 2020, 03:18 PM
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#6
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Advanced Member Group: Members Posts: 2,298 Joined: 22-February 13 From: Middletown CT Member No.: 15,565 Region Association: North East States
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Just get a good use one.
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| Tdskip |
Jun 15 2020, 04:30 PM
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#7
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Advanced Member Group: Members Posts: 3,686 Joined: 1-December 17 From: soCal Member No.: 21,666 Region Association: None
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QUOTE(GregAmy @ Jun 15 2020, 04:18 PM)  Just get a good use one. ^^^^^ +1 Not expensive and probably best to keep stock. |
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| 914e |
Jun 15 2020, 06:48 PM
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#8
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Member Group: Members Posts: 496 Joined: 21-February 20 From: Arizona Member No.: 23,951 Region Association: Southwest Region
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They are still available from Porsche
911-424-221-00 about $60 from the dealer. Mine broke into about 3 pieces when I was pulling out the linkage. |
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