The Ford Barn

jbc · 11-14-2012, 11:21 PM

I've had my 40 Ford for about about 5 months and decided it was time to change the oil and give the under carriage a good look. I was under the car once before but I hadn't changed the oil. Theres an oil leak around the transmission shift leavers. I bought new seals but I can't see how the arms come off to replace them. Also, when I removed the oil plug, there was no gasket or O ring. I can't imagine this is right. Looks like I'm leaking oil under the plug when the car is parked. I could use some advice.
Thanks
John

Ken/Alabama · 11-14-2012, 11:43 PM

There should be a gasket under the oil plug. To replace the seals in the shift cover you will need to remove the cover for this. The cover can be removed without removing the transmission. The arms are held in place via a pin thats peened in place , a roll pin works as a good replacement. Just done mine a month ago.

Russ/40 · 11-15-2012, 12:09 AM

Gasket under the oil plug? Don't think so, it's a taper pipe plug. If it leaks, use Teflon tape on it.

columbiA · 11-15-2012, 12:17 AM

The shift levers are pinned to the shift fork shafts.After you get them off, pry out the seals & carefully install the new ones with the lip facing the trans. The filler & drain plugs have a pipe thread,so no seals required.Clean the threads off well & apply a bit of Permatex or pipe dope on the male threads & that should seal it.It may be leaking from the shaft ends at the back of the case or from the ends of the pin that retains the shafts.Use some brake cleaner or laquer thinner to clean rear & bottom of trans to see where oil is coming from.Sometimes trans have been apart so many times that the bores in the case are worn oversize.

Ken/Alabama · 11-15-2012, 02:29 AM

Never seen a tapered plug on any of my 40 oil pans, they all have a gasket under them. We are talking about the oil pan aren't we?

Fibber Mcgee · 11-15-2012, 05:37 AM

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Quote:

Originally Posted by Ken/Alabama

There should be a gasket under the oil plug. To replace the seals in the shift cover you will need to remove the cover for this. The cover can be removed without removing the transmission. The arms are held in place via a pin thats peened in place , a roll pin works as a good replacement. Just done mine a month ago.

Ditto on the roll pin,easy to come by and work perfect.

Walt Dupont--Me. · 11-15-2012, 06:00 AM

I think there confused on what oil plug you talking about. The plug on engine oil pan should have a gasket. the plug on the trans is a pipe thread and don't have a gasket. Walt

jbc · 11-15-2012, 05:21 PM

When replacing the gasket, are you talking about a paper or copper gasket or an O ring? There's a groove in the plug that looks like it will accept an O ring. Thank for all the help, I'm learning.

Ken/Alabama · 11-15-2012, 05:43 PM

I would use a Copper gasket if you have one.

jbc · 11-15-2012, 06:06 PM

I also think a copper gasket would be the best, but were do I find one, or should I just try and make one?

Bassman/NZ · 11-15-2012, 08:17 PM

He's talking about the trans, not the pan.

Walt Dupont--Me. · 11-15-2012, 08:33 PM

Ain't this fun. I wish he would say if it's the engine oil pan drain plug or the trans drain plug. The origional 40 oil pan has a big drain plug about 2in. in dia. This ought to make this thread drag out awhiloe longer. Walt

Ken/Alabama · 11-16-2012, 12:08 AM

Hey JBC, Clarify for us if your talking about the engine oil pan plug or the transmission drain plug. I assumed you were talking about the engine oil pan since you said in your first post that you wanted to change the oil.

jbc · 11-16-2012, 02:34 AM

Thanks for all the replies. I'm talking about the oil pan plug. My plug had no gasket when I removed it. I checked with NAPA and they couldn't help. But I was able to find an O ring. John

jbc · 11-16-2012, 01:53 PM

I've checked with a number of part houses and no one has a gasket for the 40 ford oil pan plug. With all the flat heads out there, I would think I could find one. I'm not sure whether it's a copper or paper gasket. Has anyone used an O ring?
John
352 208 6359

L78CHEVELLE · 11-16-2012, 02:07 PM

Dennis Carpenter, Mac's, Bob Drake, and any other good V8 supplier has the oil pan bolt gasket.

peewee2you · 11-16-2012, 02:28 PM

Might as well make it a bit easier and lengthier? is that such a word.
http://macsautoparts.com/search.asp?...+plug&x=17&y=5

Kube · 11-16-2012, 04:37 PM

Quote:

Originally Posted by Ken/Alabama

Never seen a tapered plug on any of my 40 oil pans, they all have a gasket under them. We are talking about the oil pan aren't we?

Ken, You are correct... a gasket always. Originally it was a wire impregnated asbestos gasket

11-14-2012, 11:21 PM	#1
jbc Senior Member Join Date: May 2011 Location: ocala fl Posts: 160	40 Ford oil leak I've had my 40 Ford for about about 5 months and decided it was time to change the oil and give the under carriage a good look. I was under the car once before but I hadn't changed the oil. Theres an oil leak around the transmission shift leavers. I bought new seals but I can't see how the arms come off to replace them. Also, when I removed the oil plug, there was no gasket or O ring. I can't imagine this is right. Looks like I'm leaking oil under the plug when the car is parked. I could use some advice. Thanks John

11-14-2012, 11:43 PM	#2
Ken/Alabama Senior Member Join Date: May 2010 Location: Alabama Posts: 3,261	Re: 40 Ford oil leak There should be a gasket under the oil plug. To replace the seals in the shift cover you will need to remove the cover for this. The cover can be removed without removing the transmission. The arms are held in place via a pin thats peened in place , a roll pin works as a good replacement. Just done mine a month ago.

11-15-2012, 12:09 AM	#3
Russ/40 Senior Member Join Date: May 2010 Location: Santee, California Posts: 3,505	Re: 40 Ford oil leak Gasket under the oil plug? Don't think so, it's a taper pipe plug. If it leaks, use Teflon tape on it.

11-15-2012, 12:17 AM	#4
columbiA Senior Member Join Date: Nov 2011 Location: B.C. Canada Posts: 1,746	Re: 40 Ford oil leak The shift levers are pinned to the shift fork shafts.After you get them off, pry out the seals & carefully install the new ones with the lip facing the trans. The filler & drain plugs have a pipe thread,so no seals required.Clean the threads off well & apply a bit of Permatex or pipe dope on the male threads & that should seal it.It may be leaking from the shaft ends at the back of the case or from the ends of the pin that retains the shafts.Use some brake cleaner or laquer thinner to clean rear & bottom of trans to see where oil is coming from.Sometimes trans have been apart so many times that the bores in the case are worn oversize.

11-15-2012, 02:29 AM	#5
Ken/Alabama Senior Member Join Date: May 2010 Location: Alabama Posts: 3,261	Re: 40 Ford oil leak Never seen a tapered plug on any of my 40 oil pans, they all have a gasket under them. We are talking about the oil pan aren't we?

11-15-2012, 06:00 AM	#7
Walt Dupont--Me. Senior Member Join Date: May 2010 Location: Gardiner Me. Posts: 4,200	Re: 40 Ford oil leak I think there confused on what oil plug you talking about. The plug on engine oil pan should have a gasket. the plug on the trans is a pipe thread and don't have a gasket. Walt

11-15-2012, 05:21 PM	#8
jbc Senior Member Join Date: May 2011 Location: ocala fl Posts: 160	Re: 40 Ford oil leak When replacing the gasket, are you talking about a paper or copper gasket or an O ring? There's a groove in the plug that looks like it will accept an O ring. Thank for all the help, I'm learning.

11-15-2012, 05:43 PM	#9
Ken/Alabama Senior Member Join Date: May 2010 Location: Alabama Posts: 3,261	Re: 40 Ford oil leak I would use a Copper gasket if you have one.

11-15-2012, 06:06 PM	#10
jbc Senior Member Join Date: May 2011 Location: ocala fl Posts: 160	Re: 40 Ford oil leak I also think a copper gasket would be the best, but were do I find one, or should I just try and make one?

11-15-2012, 08:17 PM	#11
Bassman/NZ Senior Member Join Date: May 2010 Location: Napier, New Zealand Posts: 2,001	Re: 40 Ford oil leak He's talking about the trans, not the pan.

11-15-2012, 08:33 PM	#12
Walt Dupont--Me. Senior Member Join Date: May 2010 Location: Gardiner Me. Posts: 4,200	Re: 40 Ford oil leak Ain't this fun. I wish he would say if it's the engine oil pan drain plug or the trans drain plug. The origional 40 oil pan has a big drain plug about 2in. in dia. This ought to make this thread drag out awhiloe longer. Walt

11-16-2012, 12:08 AM	#13
Ken/Alabama Senior Member Join Date: May 2010 Location: Alabama Posts: 3,261	Re: 40 Ford oil leak Hey JBC, Clarify for us if your talking about the engine oil pan plug or the transmission drain plug. I assumed you were talking about the engine oil pan since you said in your first post that you wanted to change the oil.

11-16-2012, 02:34 AM	#14
jbc Senior Member Join Date: May 2011 Location: ocala fl Posts: 160	Re: 40 Ford oil leak Thanks for all the replies. I'm talking about the oil pan plug. My plug had no gasket when I removed it. I checked with NAPA and they couldn't help. But I was able to find an O ring. John

11-16-2012, 01:53 PM	#15
jbc Senior Member Join Date: May 2011 Location: ocala fl Posts: 160	Re: 40 Ford oil leak I've checked with a number of part houses and no one has a gasket for the 40 ford oil pan plug. With all the flat heads out there, I would think I could find one. I'm not sure whether it's a copper or paper gasket. Has anyone used an O ring? John 352 208 6359

11-16-2012, 02:07 PM	#16
L78CHEVELLE Senior Member Join Date: Jul 2010 Location: London Kentucky Posts: 356	Re: 40 Ford oil leak Dennis Carpenter, Mac's, Bob Drake, and any other good V8 supplier has the oil pan bolt gasket.

11-16-2012, 02:28 PM	#17
peewee2you Senior Member Join Date: May 2010 Location: Elk Grove, CA Posts: 663	Re: 40 Ford oil leak Might as well make it a bit easier and lengthier? is that such a word. http://macsautoparts.com/search.asp?...+plug&x=17&y=5