The Ford Barn

John Walters · 10-25-2015, 06:59 PM

Hopefully this photo is attached. I have oil leaking from a small hole in flywheel housing(?). It leaks when running but stopped when engine turned off. This car (30 pickup) has a later ('39) transmission, so I am not sure if I am looking at a 1930 portion of the transmission or the 39. Any help appreciated.

Dick Deegan · 10-25-2015, 08:19 PM

I would guess that the drain tube on the rear main is wither missing or it's plugged - or the passageway that the pipe fits into is plugged.

Dick

RonC · 10-25-2015, 08:29 PM

Rear main be have excessive clearance from wear also. Check the clearance

1955cj5 · 10-25-2015, 09:21 PM

This thread may help..

https://www.fordbarn.com/forum/showthread.php?t=181073

BILL WILLIAMSON · 10-25-2015, 10:17 PM

John,
Make SURE it's not GEAR OIL. A friend had his engine out 3 times, fussin' around with the rear main, BEFORE he discovered it was TRANSMISSION OIL!
Bill W.

PC/SR · 10-25-2015, 11:15 PM

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I have a 39 trans and the leak you see is likely from the rear bearing, but check to make sure it is engine oil, not trans oil like Bill says. Check oil level first. Recent thread on this.

Tom Wesenberg · 10-26-2015, 12:25 AM

That hole should also have a large cotter pin to shake and keep the oil and dirt from plugging the hole.

10-25-2015, 08:19 PM	#2
Dick Deegan Senior Member Join Date: May 2010 Posts: 527	Re: Leaking Oil while engine runs I would guess that the drain tube on the rear main is wither missing or it's plugged - or the passageway that the pipe fits into is plugged. Dick

10-25-2015, 08:29 PM	#3
RonC Senior Member Join Date: May 2010 Location: Rhode Island Posts: 1,868	Re: Leaking Oil while engine runs Rear main be have excessive clearance from wear also. Check the clearance

10-25-2015, 09:21 PM	#4
1955cj5 Senior Member Join Date: Apr 2015 Location: Boise, Idaho Posts: 1,607	Re: Leaking Oil while engine runs This thread may help.. https://www.fordbarn.com/forum/showthread.php?t=181073 __________________ Early '29 CCPU that had a 4-speed, but not any more.......in the family since '62

10-25-2015, 10:17 PM	#5
BILL WILLIAMSON Senior Member Join Date: Dec 2010 Location: FRESNO, CA Posts: 12,560	Re: Leaking Oil while engine runs John, Make SURE it's not GEAR OIL. A friend had his engine out 3 times, fussin' around with the rear main, BEFORE he discovered it was TRANSMISSION OIL! Bill W. __________________ "THE ASSISTANT GURU OF STUFF"

10-25-2015, 11:15 PM	#6
PC/SR Senior Member Join Date: May 2010 Location: Santa Rosa, CA Posts: 1,285	Re: Leaking Oil while engine runs Sponsored Links (Register now to hide all advertisements) I have a 39 trans and the leak you see is likely from the rear bearing, but check to make sure it is engine oil, not trans oil like Bill says. Check oil level first. Recent thread on this.

10-26-2015, 12:25 AM	#7
Tom Wesenberg Senior Member Join Date: May 2010 Location: Mpls, MN Posts: 27,582	Re: Leaking Oil while engine runs That hole should also have a large cotter pin to shake and keep the oil and dirt from plugging the hole.