Page 1 of 1
What size allen wrench to drain differential?
Posted: Tue Jul 06, 2021 9:50 am
by DHort
My friend needs to check his differential. I did not realize that a 27 needs an allen wrench to open the drain on his car. Can you tell me what size wrench I need? ........If it has been a long time and it does not want to loosen up, what is the best way to get that loose? I do not know if I want to heat that area or if I should just try an extension (pipe) on the wrench.
Re: What size allen wrench to drain differential?
Posted: Tue Jul 06, 2021 10:16 am
by RajoRacer
Shouldn't be an allen - isn't it square ? Should just take a 3/8" ratchet.
Re: What size allen wrench to drain differential?
Posted: Tue Jul 06, 2021 10:19 am
by Mark Gregush
Should be a square hole, not allen wrench, unless someone has installed a different plug. 3/8" socket wrench should work if square hole.
Re: What size allen wrench to drain differential?
Posted: Tue Jul 06, 2021 10:34 am
by Erik Johnson
The later Ford script adjustable wrenches have a square boss on the end of the handle for use with the Model T and Model A differential plug.
Re: What size allen wrench to drain differential?
Posted: Tue Jul 06, 2021 10:36 am
by Mark Gregush
Removed by author
Re: What size allen wrench to drain differential?
Posted: Tue Jul 06, 2021 10:50 am
by John Codman
Mine may have once been 3/8" square, but it's more like 7/16" now.
Re: What size allen wrench to drain differential?
Posted: Tue Jul 06, 2021 10:56 am
by old_charley
Bung wrench. A handy addition to any toolbox!
Re: What size allen wrench to drain differential?
Posted: Tue Jul 06, 2021 11:43 am
by Rich Eagle
Standard 1/2" NPT plugs are sold with a 3/8" hex size if that is what is in there.
Rich
Re: What size allen wrench to drain differential?
Posted: Tue Jul 06, 2021 3:57 pm
by DHort
I will have to look closer. Just assumed it was a hole for an Allen wrench. Ratchet will be a lot easier. Thanks everyone.
Re: What size allen wrench to drain differential?
Posted: Tue Jul 06, 2021 4:10 pm
by Scott_Conger
deleted due to really wrong information