The Ford Barn

Paul Howes · 05-20-2018, 02:36 PM

I have a Laycock overdrive "j" type on my 1931 Model A. Does anyone know where to drain the oil and where the fill plug is?

Tanglfoot · 05-20-2018, 03:03 PM

The only way to drain the oil is to remove the small aluminium sump, this also allows you to clean the filters. The OD shared oil with the gearbox. Without the gearbox fill plug one must fit a plug to the OD front housing about half way up. Cheers

Herb Concord Ca · 05-20-2018, 08:58 PM

On mine I have 7/16" plug horizontally that threads in to the sump to drain the oil.
Mine has a pipe thread fill plug as Tanglfoot mentioned above.

Paul Howes · 05-21-2018, 08:24 AM

Thanks for the input on the overdrive. Took the plate off the bottom and about a cup of oil came out, Not good.
The filter looked clean. I found a plug at the very top in the front section, have to be a contortionist to get oil into the OD. Have to find a way to fill it, no lifting the floorboard there.

jhowes · 05-21-2018, 08:39 AM

If you found a plug at the front of the unit, why not pump oil into the OD with a pump. Also if it shares the tranny oil as mentioned above, why is there so little oil in it to begin with? Jack

jhowes · 05-21-2018, 08:44 AM

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Paul; Glad to see you are on the barn. There are a lot of guys and some gal's to help here and they know a lot about the Model A. You should tell everyone that you are taking a 1200 mile trip in a few weeks with the A and I'll be along as the onboard mechanic. Jack

jhowes · 05-23-2018, 07:26 AM

bttt

BILL WILLIAMSON · 05-23-2018, 08:06 AM

Most common cause of NOT shifting, is LOW on oil. Use ATF!
Bill W.

Dick M · 05-23-2018, 03:09 PM

I use 10-30W oil in my Laycock Overdrive. I fill it using a pump oil can. Takes a while but it works for me. Fill it until oil comes out of the fill hole.

FWIW, to ensure a good ground, I run a ground wire from the unit to the frame. I do this because the unit started to shift in and out of overdrive on its own. I spoke to Rich Little, the guy who built my overdrive, and he told me to add a ground wire. It has worked perfectly since installing the ground wire.

05-20-2018, 02:36 PM	#1
Paul Howes Junior Member Join Date: Aug 2011 Location: florida Posts: 16	overdrive I have a Laycock overdrive "j" type on my 1931 Model A. Does anyone know where to drain the oil and where the fill plug is?

05-20-2018, 03:03 PM	#2
Tanglfoot Member Join Date: Jan 2013 Location: Mangawhai NZ Posts: 66	Re: overdrive The only way to drain the oil is to remove the small aluminium sump, this also allows you to clean the filters. The OD shared oil with the gearbox. Without the gearbox fill plug one must fit a plug to the OD front housing about half way up. Cheers

05-20-2018, 08:58 PM	#3
Herb Concord Ca Senior Member Join Date: May 2010 Location: Concord CA Posts: 637	Re: overdrive On mine I have 7/16" plug horizontally that threads in to the sump to drain the oil. Mine has a pipe thread fill plug as Tanglfoot mentioned above.

05-21-2018, 08:24 AM	#4
Paul Howes Junior Member Join Date: Aug 2011 Location: florida Posts: 16	Re: overdrive Thanks for the input on the overdrive. Took the plate off the bottom and about a cup of oil came out, Not good. The filter looked clean. I found a plug at the very top in the front section, have to be a contortionist to get oil into the OD. Have to find a way to fill it, no lifting the floorboard there.

05-21-2018, 08:39 AM	#5
jhowes Senior Member Join Date: Jul 2010 Location: upstate NY near Mass border Posts: 789	Re: overdrive If you found a plug at the front of the unit, why not pump oil into the OD with a pump. Also if it shares the tranny oil as mentioned above, why is there so little oil in it to begin with? Jack

05-21-2018, 08:44 AM	#6
jhowes Senior Member Join Date: Jul 2010 Location: upstate NY near Mass border Posts: 789	Re: overdrive Sponsored Links (Register now to hide all advertisements) Paul; Glad to see you are on the barn. There are a lot of guys and some gal's to help here and they know a lot about the Model A. You should tell everyone that you are taking a 1200 mile trip in a few weeks with the A and I'll be along as the onboard mechanic. Jack

05-23-2018, 07:26 AM	#7
jhowes Senior Member Join Date: Jul 2010 Location: upstate NY near Mass border Posts: 789	Re: overdrive bttt

05-23-2018, 08:06 AM	#8
BILL WILLIAMSON Senior Member Join Date: Dec 2010 Location: FRESNO, CA Posts: 12,560	Re: overdrive Most common cause of NOT shifting, is LOW on oil. Use ATF! Bill W. __________________ "THE ASSISTANT GURU OF STUFF"

05-23-2018, 03:09 PM	#9
Dick M Senior Member Join Date: May 2010 Location: Ukiah, CA Posts: 477	Re: overdrive I use 10-30W oil in my Laycock Overdrive. I fill it using a pump oil can. Takes a while but it works for me. Fill it until oil comes out of the fill hole. FWIW, to ensure a good ground, I run a ground wire from the unit to the frame. I do this because the unit started to shift in and out of overdrive on its own. I spoke to Rich Little, the guy who built my overdrive, and he told me to add a ground wire. It has worked perfectly since installing the ground wire.