The Ford Barn

whb52ford · 04-17-2018, 06:14 PM

I have a couple OD solenoids. Decided to replace the oil seals on them. Bought National 240698-all rubber, and SKF 3060-metal outside with rubber inside. Two of the solenoids the seals went right in. Three of the solenoids have a small line/ring/lip a little way down preventing the seal from going all the way down. I tested the solenoid and when I energize the solenoid, the seal pops forward with the solenoid. The seal I took out on the three looks different. I'm having trouble finding the seal for these three solenoids. Worse case, I take a dremel and try and grind out that lip. Any ideas? thx

Craig CT · 04-17-2018, 07:36 PM

Quote:

Originally Posted by whb52ford

I have a couple OD solenoids. Decided to replace the oil seals on them. Bought National 240698-all rubber, and SKF 3060-metal outside with rubber inside. Two of the solenoids the seals went right in. Three of the solenoids have a small line/ring/lip a little way down preventing the seal from going all the way down. I tested the solenoid and when I energize the solenoid, the seal pops forward with the solenoid. The seal I took out on the three looks different. I'm having trouble finding the seal for these three solenoids. Worse case, I take a dremel and try and grind out that lip. Any ideas? thx

Hi whb52ford; Try Mac VanPelt, he should be able to help you, Craig.

JT FORD · 04-18-2018, 11:10 AM

There is no oil seal in a OD solenoid. The seal is placed in the OD case.
It keeps the tranny / OD fluid from leaking out. There is no oil inside the solenoid.

leon bee · 04-18-2018, 11:26 AM

This is kind of interesting because I was going to replace that seal on my project. I looked and looked and couldn't figure out if the seal was in the case or that thing I could see around the solenoid plunger shaft. I never did decide. My books didn't help.

JT FORD · 04-18-2018, 01:47 PM

There most be a seal in casting, if not the fluid woud be running out of the case. The seal is has a metal outside and a rubber inside, like any other seal. They do wear out after 50 years and can be replaced. Napa sells them. Pry the old one out and install.

scooder · 04-18-2018, 01:52 PM

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Quote:

Originally Posted by JT FORD

There is no oil seal in a OD solenoid. The seal is placed in the OD case.
It keeps the tranny / OD fluid from leaking out. There is no oil inside the solenoid.

On my overdrives there is most definitely a seal in the solinoid as well as a seal in the case. Most of my solenoids are from Early (49-51) but also have a couple of 12 volt solinoids, they both have a seal in them like the earlier ones I have. And they all have a drain hole for the transmission oil that gets past both seals.
Belts and braces on your overalls.
Martin.

rotorwrench · 04-18-2018, 02:03 PM

There may have been more than one company manufacturing these old operating solenoids. I've never seen a parts break down anywhere for them since they were sold as a unit. A seal would have to mach the original type for each of the varying designs to get good service. There may be no current supplier for some designs. I know there used to be a few guys overhauling these units but I've not looked for this service yet. Folks that did this service would have known where to find stuff like that.

04-17-2018, 06:14 PM	#1
whb52ford Senior Member Join Date: Jan 2013 Location: Ocala, FL 34481 Posts: 235	OD solenoid seals I have a couple OD solenoids. Decided to replace the oil seals on them. Bought National 240698-all rubber, and SKF 3060-metal outside with rubber inside. Two of the solenoids the seals went right in. Three of the solenoids have a small line/ring/lip a little way down preventing the seal from going all the way down. I tested the solenoid and when I energize the solenoid, the seal pops forward with the solenoid. The seal I took out on the three looks different. I'm having trouble finding the seal for these three solenoids. Worse case, I take a dremel and try and grind out that lip. Any ideas? thx

04-18-2018, 11:10 AM	#3
JT FORD Senior Member Join Date: May 2010 Location: N.W. Iowa Posts: 306	Re: OD solenoid seals There is no oil seal in a OD solenoid. The seal is placed in the OD case. It keeps the tranny / OD fluid from leaking out. There is no oil inside the solenoid.

04-18-2018, 11:26 AM	#4
leon bee Senior Member Join Date: May 2017 Location: Arkansas Posts: 611	Re: OD solenoid seals This is kind of interesting because I was going to replace that seal on my project. I looked and looked and couldn't figure out if the seal was in the case or that thing I could see around the solenoid plunger shaft. I never did decide. My books didn't help.

04-18-2018, 01:47 PM	#5
JT FORD Senior Member Join Date: May 2010 Location: N.W. Iowa Posts: 306	Re: OD solenoid seals There most be a seal in casting, if not the fluid woud be running out of the case. The seal is has a metal outside and a rubber inside, like any other seal. They do wear out after 50 years and can be replaced. Napa sells them. Pry the old one out and install.

04-18-2018, 02:03 PM	#7
rotorwrench Senior Member Join Date: Jun 2010 Location: San Antonio, Texas Posts: 16,426	Re: OD solenoid seals There may have been more than one company manufacturing these old operating solenoids. I've never seen a parts break down anywhere for them since they were sold as a unit. A seal would have to mach the original type for each of the varying designs to get good service. There may be no current supplier for some designs. I know there used to be a few guys overhauling these units but I've not looked for this service yet. Folks that did this service would have known where to find stuff like that.