AW71: Oil Pan...Drain plug stripped

84B23F · 03-26-2021, 10:31 PM

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

thx

c1800 · 03-26-2021, 11:24 PM

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”.

IansPlatinum · 03-26-2021, 11:27 PM

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

planetman · 03-27-2021, 12:40 AM

Maybe if I wasn't a "new timer", I might be able to offer help.

Quote:

Originally Posted by 84B23F

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

thx

c1800 · 03-27-2021, 12:58 AM

Quote:

Originally Posted by planetman

Maybe if I wasn't a "new timer", I might be able to offer help.

old timers welcome too.

84B23F · 03-27-2021, 09:16 AM

Quote:

Originally Posted by IansPlatinum

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.

Redwood Chair · 03-27-2021, 11:41 AM

https://forums.turbobricks.com/newth...newthread&f=14

tintintin · 03-27-2021, 01:12 PM

car-part.com for a used pan?

283SD · 03-27-2021, 01:39 PM

Re tap it to the next bigger size if the plate in the pan is intact.

sbabbs · 03-27-2021, 05:55 PM

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....

84B23F · 03-27-2021, 08:41 PM

Quote:

Originally Posted by 283SD

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

lummert · 03-31-2021, 01:17 PM

Drain plug with self tapping oversized threads comes to mind.

84B23F · 03-31-2021, 06:59 PM

Quote:

Originally Posted by lummert

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

283SD · 04-01-2021, 09:48 AM

Grease the tap flutes to catch the metal shards.

84B23F · 04-02-2021, 08:45 PM

Quote:

Originally Posted by 283SD

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.

03-26-2021, 10:31 PM	#1
84B23F Board Member Join Date: Feb 2008 Location: Kansas, USA	AW71: Oil Pan...Drain plug stripped So, drain plug is stripped...any option to fix it...or just close access to it? thx

03-26-2021, 11:27 PM	#3
IansPlatinum Board Member Join Date: Jul 2018 Location: Texas	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 __________________ '96 854 Platinum - "Trusty" '92 245 - "Boat" '71 145 - "Rusty" '93 Land Cruiser - "Ruby" '01 Cherokee - "Janice"

03-27-2021, 05:55 PM	#10
sbabbs Board Member Join Date: Dec 2006 Location: Rushing Lane, Scappoose, OR	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.... __________________ 1988 245 White slicktop M47 Wagon! 93 b230f. LH 2.4 STS flat flywheel. 1990 745 B230FT Getrag JohnV flywheel 240mm clutch 13c A-cam 3.54 G80 548K 1991 740SE B230FT NPR Strut braces IPD bar A cam 550cc EV14's. 3.73 G80 M90 to put in. 1995 940 White racing wagoon. 13c m90 to put in

03-31-2021, 01:17 PM	#12
lummert Board Member Join Date: Jan 2008 Location: Portland IN	Drain plug with self tapping oversized threads comes to mind. __________________ Trying to understand stupid people is like trying to pick up a turd by the clean end.

Thread Tools
Show Printable Version Email this Page
Display Modes
Linear Mode Switch to Hybrid Mode Switch to Threaded Mode

03-26-2021, 11:24 PM	#2
c1800 Board Member Join Date: Jun 2014 Location: Alberta	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”.

03-27-2021, 01:12 PM	#8
tintintin Board Member Join Date: Sep 2012	car-part.com for a used pan?

03-27-2021, 01:39 PM	#9
283SD Board Member Join Date: Mar 2008	Re tap it to the next bigger size if the plate in the pan is intact.

04-01-2021, 09:48 AM	#14
283SD Board Member Join Date: Mar 2008	Grease the tap flutes to catch the metal shards.