The Ford Barn

39MikeFL · 04-23-2018, 08:42 AM

Hey guys, Noticed a leak coming from my transmission. (I know they all leak lol) question I cleaned off the case and there is a tiny hole between the drain plug and the front of the transmission. I noticed some fluid coming from the hole any one know what that hole is for? Thanks

Mart · 04-23-2018, 08:53 AM

There should not be any holes in the area you describe. Can you get a good, well lit close up shot of it?

Mart.

Ggmac · 04-23-2018, 10:49 AM

Quote:

Originally Posted by 39MikeFL

Hey guys, Noticed a leak coming from my transmission. (I know they all leak lol) question I cleaned off the case and there is a tiny hole between the drain plug and the front of the transmission. I noticed some fluid coming from the hole any one know what that hole is for? Thanks

Is the drain plug from the motor or trans ? If your referring to the motor drain plug then it's the hole under the flywheel.

39MikeFL · 04-24-2018, 06:38 PM

5FB36790-DBBF-46E3-9277-0B9B72530FD8.jpg

I think this is the photo. First time trying to post a photo.

alanwoodieman · 04-24-2018, 06:54 PM

a created a weep hole for a front seal leak???

cas3 · 04-24-2018, 07:12 PM

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not supposed to be a hole there. it really should not matter, but the oil is coming from the transmission. does it work proper? checked the oil level lately? it would have to come out to get fixed

Step-down · 04-24-2018, 08:06 PM

Maybe someone drilled a hole once for a wisebone braket , From Bling . That hole is in the bell housing .

cas3 · 04-24-2018, 09:41 PM

yes, and i myself have drilled there for a wishbone bracket. the popular one to put a v8 tranny on a model a is a good idea, but i thought it was to wimpy and made my own that utilizes 4 bell housing bolts, and one in the trans case like this one, as opposed to 2 bell bolts and no bottom bolt to the trans. lot of grinding to shape that to fit a v8 trans case.

Mart · 04-25-2018, 02:03 AM

Measure the hole, find the next size up pipe thread, drill to suit, tap it and fit a pipe plug. You may get away with 1/16 npt or may have to go to 1/8.

All sizes for drilling and tapping are available online.

Should be an easy fix if you have (or can get) some basic tooling.

Mart.

cas3 · 04-25-2018, 10:19 AM

gotta fix the leak first or you will make a lake!

38bill · 04-25-2018, 11:58 AM

Like cas3 said. The hole appears to be on the dry side of the tranny so it shouldn't make a difference, I'd just leave it be. If the oil is leaking out of the front of the transmission and this extra hole is plugged the oil will just run forward and leak out of the weep hole in the pan anyway. You need to fix the leaking seal.

rotorwrench · 04-25-2018, 02:12 PM

If I wanted to cap it, I'd just tap it for the closest bolt size (if it isn't already) and put a bolt in with some sealer or a lock-o-seal washer. It must have been drilled all the way up into the bell area just below the throw out fork. Oil in that location will generally still find a way out through the bell housing somewhere.

Mart · 04-25-2018, 03:05 PM

^^ I looked again and yes, it does look to be in the clutch area. It can probably just be left as it is, or maybe drilled and tapped and put a bolt in it.

Weird.

Mart.

Jack E/NJ · 04-25-2018, 03:14 PM

Mart>>> left as it is >>>

My favorite kind of choice! 8^) Jack E/NJ

39MikeFL · 04-25-2018, 06:03 PM

Thank you all for the great insite.

John R · 04-25-2018, 09:05 PM

Another possible explanation for the hole: access to the flat headed pin which holds the clutch release fork onto the release shaft. Allows for driving out the pin from the bottom and/or peening over the pin after installation.

cas3 · 04-25-2018, 09:14 PM

by golly thats a good thought! those can be a sob

JSeery · 04-25-2018, 09:18 PM

On a different transmission I do rebuilds on it is recommended that you add an access hole in the bellhousing area. Sounds like that could be similar here.

04-23-2018, 08:42 AM	#1
39MikeFL Junior Member Join Date: Nov 2017 Posts: 16	39 Ford pickup transmission (tiny hole) Hey guys, Noticed a leak coming from my transmission. (I know they all leak lol) question I cleaned off the case and there is a tiny hole between the drain plug and the front of the transmission. I noticed some fluid coming from the hole any one know what that hole is for? Thanks

04-23-2018, 08:53 AM	#2
Mart Senior Member Join Date: May 2010 Location: Solihull, England. Posts: 8,749	Re: 39 Ford pickup transmission (tiny hole) There should not be any holes in the area you describe. Can you get a good, well lit close up shot of it? Mart.

04-24-2018, 06:54 PM	#5
alanwoodieman Senior Member Join Date: May 2010 Location: upstate SC Posts: 2,963	Re: 39 Ford pickup transmission (tiny hole) a created a weep hole for a front seal leak???

04-24-2018, 07:12 PM	#6
cas3 Senior Member Join Date: Jan 2011 Location: sw minnesota Posts: 4,571	Re: 39 Ford pickup transmission (tiny hole) Sponsored Links (Register now to hide all advertisements) not supposed to be a hole there. it really should not matter, but the oil is coming from the transmission. does it work proper? checked the oil level lately? it would have to come out to get fixed

04-24-2018, 08:06 PM	#7
Step-down Senior Member Join Date: May 2012 Location: Hat City (Danbury CT) Posts: 647	Re: 39 Ford pickup transmission (tiny hole) Maybe someone drilled a hole once for a wisebone braket , From Bling . That hole is in the bell housing . __________________ "I can't cry as long as I know the Lord has risen "

04-24-2018, 09:41 PM	#8
cas3 Senior Member Join Date: Jan 2011 Location: sw minnesota Posts: 4,571	Re: 39 Ford pickup transmission (tiny hole) yes, and i myself have drilled there for a wishbone bracket. the popular one to put a v8 tranny on a model a is a good idea, but i thought it was to wimpy and made my own that utilizes 4 bell housing bolts, and one in the trans case like this one, as opposed to 2 bell bolts and no bottom bolt to the trans. lot of grinding to shape that to fit a v8 trans case.

04-25-2018, 02:03 AM	#9
Mart Senior Member Join Date: May 2010 Location: Solihull, England. Posts: 8,749	Re: 39 Ford pickup transmission (tiny hole) Measure the hole, find the next size up pipe thread, drill to suit, tap it and fit a pipe plug. You may get away with 1/16 npt or may have to go to 1/8. All sizes for drilling and tapping are available online. Should be an easy fix if you have (or can get) some basic tooling. Mart.

04-25-2018, 10:19 AM	#10
cas3 Senior Member Join Date: Jan 2011 Location: sw minnesota Posts: 4,571	Re: 39 Ford pickup transmission (tiny hole) gotta fix the leak first or you will make a lake!

04-25-2018, 11:58 AM	#11
38bill Senior Member Join Date: Apr 2014 Location: Minnesota Posts: 1,166	Re: 39 Ford pickup transmission (tiny hole) Like cas3 said. The hole appears to be on the dry side of the tranny so it shouldn't make a difference, I'd just leave it be. If the oil is leaking out of the front of the transmission and this extra hole is plugged the oil will just run forward and leak out of the weep hole in the pan anyway. You need to fix the leaking seal.

04-25-2018, 02:12 PM	#12
rotorwrench Senior Member Join Date: Jun 2010 Location: San Antonio, Texas Posts: 16,426	Re: 39 Ford pickup transmission (tiny hole) If I wanted to cap it, I'd just tap it for the closest bolt size (if it isn't already) and put a bolt in with some sealer or a lock-o-seal washer. It must have been drilled all the way up into the bell area just below the throw out fork. Oil in that location will generally still find a way out through the bell housing somewhere.

04-25-2018, 03:05 PM	#13
Mart Senior Member Join Date: May 2010 Location: Solihull, England. Posts: 8,749	Re: 39 Ford pickup transmission (tiny hole) ^^ I looked again and yes, it does look to be in the clutch area. It can probably just be left as it is, or maybe drilled and tapped and put a bolt in it. Weird. Mart.

04-25-2018, 03:14 PM	#14
Jack E/NJ Senior Member Join Date: May 2010 Posts: 2,173	Re: 39 Ford pickup transmission (tiny hole) Mart>>> left as it is >>> My favorite kind of choice! 8^) Jack E/NJ

04-25-2018, 06:03 PM	#15
39MikeFL Junior Member Join Date: Nov 2017 Posts: 16	Re: 39 Ford pickup transmission (tiny hole) Thank you all for the great insite.

04-25-2018, 09:05 PM	#16
John R Senior Member Join Date: May 2010 Location: near Washington, DC Posts: 559	Re: 39 Ford pickup transmission (tiny hole) Another possible explanation for the hole: access to the flat headed pin which holds the clutch release fork onto the release shaft. Allows for driving out the pin from the bottom and/or peening over the pin after installation. __________________ Those who do not move do not die, but are they not already dead?

04-25-2018, 09:14 PM	#17
cas3 Senior Member Join Date: Jan 2011 Location: sw minnesota Posts: 4,571	Re: 39 Ford pickup transmission (tiny hole) by golly thats a good thought! those can be a sob

04-25-2018, 09:18 PM	#18
JSeery Member Emeritus Join Date: Nov 2012 Location: Wichita KS Posts: 16,132	Re: 39 Ford pickup transmission (tiny hole) On a different transmission I do rebuilds on it is recommended that you add an access hole in the bellhousing area. Sounds like that could be similar here.