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> tranny drain plug stripped, what to do
racunniff
post Jan 7 2008, 08:30 PM
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I ran into this problem - but it was the *fill* plug that would not budge. Fortunately, I followed the sage advice of not opening the drain plug until I had the fill plug out. I tried all sorts of things - heat (both hot air gun as well as a torch), a chisel, sticking a bit of metal in with the drain plug removal tool, cursing, beating my head against the tranny, etc. What finally worked was similar to the "17mm Allen wrench" trick. Unfortunately, nobody around here seemed to carry such an item. However, M10 nuts/bolts have 17mm heads. So, I welded a bolt to a nut:

Attached Image

This fit nicely in the socket on my breaker bar:

Attached Image

And fit snugly in the drain plug. I started turning... and it *still* would not budge. In fact, with enough pressure, I *broke the weld bead on top of the bolt and the bolt started turning* (IMG:style_emoticons/default/headbang.gif) Probably because of oils on the bolt that I had not bothered to clean off.

What finally worked was when I filled in the space between the nut head and the bolt with welding beads. Effectively, I built a 17mm Allen wrench (IMG:style_emoticons/default/blink.gif) . It looks like (IMG:style_emoticons/default/barf.gif) but it did the trick. Once I got the drain plug out, I welded the bolt to it to avoid a repeat until I can get a replacement filler hole plug:

Attached Image

I'm on the hunt for a real 17mm Allen socket. Does anybody know why the genius who designed the plug remover gave it *round corners*? (IMG:style_emoticons/default/chair.gif)
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Danny_Ocean
post Jan 7 2008, 08:50 PM
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Can you drill out the plug with a slightly smaller drill-bit (17mm), then (carefully) chisel away the remaining threads? How about hitting it with a reverse drill-bit?
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racunniff
post Jan 7 2008, 08:52 PM
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QUOTE(Danny_Ocean @ Jan 7 2008, 07:50 PM) *

Can you drill out the plug with a slightly smaller drill-bit (17mm), then (carefully) chisel away the remaining threads? How about hitting it with a reverse drill-bit?


I think drilling the whole thing out is asking for metal flakes in your tranny. A reverse drill-bit is a good idea - I bought a large screw extractor as my backup plan - but I did not have to go there. The bolt trick worked just fine.
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Dr Evil
post Jan 7 2008, 11:05 PM
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Send me your transmission!
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I may have a spare plug for ya. You can get a 17mm allen socket attachment at Auto Zone for like $5 in a set. Also, craftsman makes a real sturdy one.
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PeeGreen 914
post Jan 7 2008, 11:08 PM
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Just when you think you're done...wait, there is more..lol
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QUOTE(Dr Evil @ Jan 7 2008, 09:05 PM) *

I may have a spare plug for ya. You can get a 17mm allen socket attachment at Auto Zone for like $5 in a set. Also, craftsman makes a real sturdy one.

So does Snap-on (IMG:style_emoticons/default/biggrin.gif)
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jd74914
post Jan 7 2008, 11:20 PM
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Its alive
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but Snap-on is ridiculously expensive . . .
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PeeGreen 914
post Jan 7 2008, 11:34 PM
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Just when you think you're done...wait, there is more..lol
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But worth every penny (IMG:style_emoticons/default/biggrin.gif) When I was wrenching a few years agoImade it a point to only by Snap-on. Now that I am just you at home mechanic I am glad I did as the quality is just so much higher. However, I do know that you don't need to have that level of tools for doing at home stuff. Sure is nice though.
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Rusty
post Jan 8 2008, 06:23 AM
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Hold my beer and watch this sh*t.
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This thread is a blast from the past...

Nice pics, Racuniff. Good detail showing how to do it!

I second the comment about the 17mm craftsman allen wrench. I've used mine set for about 10 years.
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Porcharu
post Jan 8 2008, 01:51 PM
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Did you ever get the plug out?
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racunniff
post Jan 8 2008, 09:04 PM
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QUOTE(Porcharu @ Jan 8 2008, 12:51 PM) *

Did you ever get the plug out?


Yep. That last pic is the fill plug out. I welded the bolt to it after it was out. My new ones just showed up from The Bird, and, thanks to the tips to check out Auto Zone, I have a 17mm Allen socket to put them in with (no more round corners!)

I need to pull the tranny here before too long - the mainseal is leaking - so I'll replace the drain plug at that time.
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