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Old 03-26-2021, 10:31 PM   #1
84B23F
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Default AW71: Oil Pan...Drain plug stripped

So, drain plug is stripped...any option to fix it...or just close access to it?

thx
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Old 03-26-2021, 11:24 PM   #2
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Will it hold in place? If you just changed the oil, put it back in with some RTV, you’re probably good for a “while”.
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Old 03-26-2021, 11:27 PM   #3
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Pretty sure it's a steel bung tacked in place to the pan. And the threads didn't look like they had any "meat" on them to bore and rethread. I think a new pan is the way to go imo
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Old 03-27-2021, 12:40 AM   #4
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Maybe if I wasn't a "new timer", I might be able to offer help.


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Originally Posted by 84B23F View Post
So, drain plug is stripped...any option to fix it...or just close access to it?

thx
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Old 03-27-2021, 12:58 AM   #5
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Quote:
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Maybe if I wasn't a "new timer", I might be able to offer help.
old timers welcome too.
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Old 03-27-2021, 09:16 AM   #6
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Originally Posted by IansPlatinum View Post
a new pan is the way to go
Volvo 1233415 - No longer available worldwide...in my searches

Volvo 1208642 (Automatic Transmission Assembly) - New transmission is available, for $4,097.30 (plus tax and S&H).

Volvo 1233071 0-Rings (2) were replaced on cooler lines' elbow-fitting, and then oil-drain bolt stripped when tightening...Bummer.

I'll take a look at it when I remove oil pan; it might be best to plug it permanently.
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Old 03-27-2021, 11:41 AM   #7
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https://forums.turbobricks.com/newth...newthread&f=14
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Old 03-27-2021, 01:12 PM   #8
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car-part.com for a used pan?
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Old 03-27-2021, 01:39 PM   #9
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Re tap it to the next bigger size if the plate in the pan is intact.
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Old 03-27-2021, 05:55 PM   #10
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Be wary of used pan that oil dipstick tube threads is the part that is usually also bad from overtightning also. In other words make sure that is good also....
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Old 03-27-2021, 08:41 PM   #11
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Quote:
Originally Posted by 283SD View Post
Re tap it to the next bigger size if the plate in the pan is intact.
Correct Answer - 3/8" x 16 tap

This would be the ideal replacement bolt: 3/8"-16 STAINLESS STEEL BUTTON FLANGE HEAD SOCKET CAP SCREW (3/8"-16 x 3/4"), but a cut-off saw will be needed to shorten it.

They pressed in a bushing that was tapped....Here's what it looks like now, with a serrated bolt having a screw head.

thx all...

Edit: I found some on Amazon

Last edited by 84B23F; 03-27-2021 at 08:50 PM..
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Old 03-31-2021, 01:17 PM   #12
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Drain plug with self tapping oversized threads comes to mind.
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Old 03-31-2021, 06:59 PM   #13
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Quote:
Originally Posted by lummert View Post
Drain plug with self tapping oversized threads comes to mind.
That will work, but using a 3/8-16 tap seems to do the trick; With a pinch of silicone on flat surface, I'm going to try this: 3/8-16 x 1/2 Inch Button Head Socket Cap Screws Bolts, Stainless Steel
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Old 04-01-2021, 09:48 AM   #14
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Grease the tap flutes to catch the metal shards.
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Old 04-02-2021, 08:45 PM   #15
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Quote:
Originally Posted by 283SD View Post
Grease the tap flutes to catch the metal shards.
Problem was the drain plug was spinning in its position; I had to remove the pan, apply pressure on top of bolt's threads, then turn to remove it.

Footnote - I had to replace these O-rings, due to a transmission oil leak

Volvo 1233071 0-Rings (2)

When it got real cold around here, transmission's cooler line was leaking where it inserted into transmission. 28 year old o-ring failed...I suspect it didn't expand after that cold weather...minus 20 F or so.
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