View Full Version : tool

06-18-2007, 08:02 PM
Is there a special tool that people use to tighten the large brass drain plug on the bottom of an a-overdrive?

06-18-2007, 08:07 PM
A brass punch and a hammer. Good luck finding the real thing.

06-18-2007, 09:17 PM
I use an adjustable gland nut wrench that I had bought for my Volvos. You can check it out at:

I used to use a brass drift too /bcforum/images/%%GRAEMLIN_URL%%/hammer.gif but this tool works much better. /bcforum/images/%%GRAEMLIN_URL%%/smile.gif

06-18-2007, 10:27 PM
I like the Volvo tool...think I'll buy it.

What is the "real thing"?

06-18-2007, 10:34 PM
If the "real thing" is one of those little round tools that fits on the end of a socket wrench and has two little round dowels sticking out the business end, then I have the real thing. It fits the plug in the bottom of my J-type overdrive. I got one from a Volvo dealer, cost a bunch of money because he had it, I wanted it, and he had me over a barrel.

06-18-2007, 10:37 PM
The "real thing" I think looked like a very large socket with a row of teeth that engaged the cutouts of the large brass nut on the overdrive. If I remember correctly there was a small company making them, but their web site seems to be gone. /bcforum/images/%%GRAEMLIN_URL%%/frown.gif

Here I think is their old URL:

06-18-2007, 11:08 PM
Saw this a few minutes ago...

https://www2.mgcars.org.uk/cgi-bin/gen5?r...7-06-1506:57:41 (https://www2.mgcars.org.uk/cgi-bin/gen5?runprog=mgbbs&access=&mode=threadm&subject=6&thread=2007061503471917233&source=L&anc=2007-06-1506:57:41)

06-19-2007, 05:42 AM
I haven't looked at an A-Type overdrive, but it seems that you need a pin-type face spanner wrench. They come in several different styles, but if you want a cheap one:
https://www.harborfreight.com/cpi/ctaf/Displayitem.taf?itemnumber=36554 (Don't know if that goes big enough.)

You could easily make one or even convert an old wrench into one by adding pins.

06-19-2007, 01:02 PM
A pin spanner really isn't the right thing (although it might work). As Merlin63Tr4 mentioned, the real tool looks like a socket with teeth.

Haven't made one for the OD plug yet; but when I do, I'll just stick a cheap socket in the vertical mill and cut some teeth in it. I've used this approach for several other tools (like the socket to turn the nut inside the shift knob on an OD Stag), and it's worked very well for me.

If you don't have a VM, I'd suggest one of those cheap 4" angle grinders from Harbor Freight and a cutoff blade. Lay out the teeth on your socket with a Sharpie (fine point permanent marker) and make successive cuts with the cutoff blade to eat out each tooth.

Oh yeah, I've got one of those pin spanners from HF, and I don't think it opens wide enough. Also too short for as tight as those drain plugs usually are, and too flimsy for a cheater bar, IMO.