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04-29-2023, 01:46 PM | #1 |
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Ford Overdrive Solenoid 6 Volt or 12 Volt ?
Would the 10AR108 - 62 part number mean its 6 volt or 12 volt application.
This solenoid fits on 49 to 62 Ford three speed trans , but Ford did switch to 12 volt in 19 56. Does anybody have the solenoid application list. No Ford part numbers stamped on the housing , only the manufacturers number 10AR108-62. Thanks for checking. |
04-29-2023, 05:54 PM | #2 |
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Re: Ford Overdrive Solenoid 6 Volt or 12 Volt ?
When looking for BW od solenoids, 6 volt units will have no voltage markings.
12 volt units will be stamped , 12 volt, on the end bell (cover).
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05-03-2023, 11:59 AM | #3 |
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Re: Ford Overdrive Solenoid 6 Volt or 12 Volt ?
New ones are available for the most common types that have a 1-inch length shaft. 5th Avenue Internet Garage carries them as well as others but many times the units just need the points cleaned. The 10AR10B-62 is a 6-volt unit but many folks use them on 12-volt vehicles. They likely just actuate a bit faster on 12-volts. Look for a 1AR10H-62 or a 1AR10K-62 for 12-volt on the old ones. Borg Warner had part numbers and the auto manufacturers had their own part numbers. The odd ones with 1.5" and 2" shafts are harder to source.
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05-03-2023, 01:32 PM | #4 |
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Re: Ford Overdrive Solenoid 6 Volt or 12 Volt ?
How well a 6 volt solenoid will work on 12 volts depends on it's condition. A continuous diet of 12 volts can eventually damage it.
On the new ones, if you go that route, don't assume it's set up properly out of the box. Remove the cap and check that the heavy pull-in coil disconnects the instant the plunger fully extends. If it doesn't adjust it until it does. Having both coils hot for very long will fry the windings around the electromagnet, rendering the solenoid inop. Ask me how I know
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05-03-2023, 01:49 PM | #5 | |
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Re: Ford Overdrive Solenoid 6 Volt or 12 Volt ?
Quote:
Last edited by rjlester; 05-03-2023 at 03:42 PM. |
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05-03-2023, 04:58 PM | #6 |
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Re: Ford Overdrive Solenoid 6 Volt or 12 Volt ?
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05-03-2023, 08:29 PM | #7 |
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Re: Ford Overdrive Solenoid 6 Volt or 12 Volt ?
Ok, well I took the solenoid off and on the bench it worked fine, but the one set of points looked dirty/corroded a bit. These are the points that are closed until the solenoid is in "pull-in" mode. Cleaned both sets of contacts. I don't have specs on what kind of adjustments should be made, so I put it back in and it still works fine. Kind of puzzled why it fails when it gets hot. Happened last fall once or twice but went away on it's own.
Last edited by rjlester; 05-03-2023 at 11:44 PM. |
05-03-2023, 08:44 PM | #8 |
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Re: Ford Overdrive Solenoid 6 Volt or 12 Volt ?
The internal windings could be beginning to fail. If that's the case you should get a new solenoid since the windings can't be repaired economically. I've had solenoids do the same thing and they eventually ate the bag.
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05-03-2023, 09:34 PM | #9 |
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Re: Ford Overdrive Solenoid 6 Volt or 12 Volt ?
I was afraid of that. Have a road trip on Saturday with the car, I'll see how it performs and I have a spare solenoid if that one continues to give me trouble.
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05-04-2023, 09:43 AM | #10 |
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Re: Ford Overdrive Solenoid 6 Volt or 12 Volt ?
It may have a governor problem. The governor is what activates the system when the car gets up to on speed. It has a set of flyweights that close or open a set of points. It's not a common thing but nothing lasts forever. Early set ups have a switch on the transmission that is controlled by the shift rail. When the car is either put into reverse or locked out with the control cable, the switch opens the solenoid circuit. Ford felt they were redundant so they discontinued use of the switch in 1951 or there abouts. I always felt that the switch was a good thing to have but they can fail too eventually.
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05-04-2023, 10:20 AM | #11 | |
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Re: Ford Overdrive Solenoid 6 Volt or 12 Volt ?
Quote:
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08-16-2023, 06:09 AM | #12 | |
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Re: Ford Overdrive Solenoid 6 Volt or 12 Volt ?
Quote:
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08-16-2023, 07:33 AM | #13 |
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Re: Ford Overdrive Solenoid 6 Volt or 12 Volt ?
Hmmm. On re-reading what I wrote I should have said "the instant plunger moves". That disengages the pull-in coil before the plunger reaches full travel.
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08-17-2023, 06:22 AM | #14 |
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Re: Ford Overdrive Solenoid 6 Volt or 12 Volt ?
so are you saying that the "pull coil" cuts out so soon that it may not be energised when the shift rod is blocking the travel of the plunger?
I guess first of all I should ask if I'm correct in my thought that when the shift rod is moved to the rear by pulling the cable, the plunger cannot move into the ring? It looks like the plunger travel is stopped by the fatter area of the shift rod. And to me, this limiting of the travel could keep the solenoid from traveling far enough to allow the "pull coil" to be turned off. But it sounds like you are saying the switch in the solenoid can turn off the "pull coil" before the plunger contacts the fatter area of the shift rod. Is that correct? I just don't want to burn up the solenoid. |
08-17-2023, 06:30 AM | #15 |
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Re: Ford Overdrive Solenoid 6 Volt or 12 Volt ?
I hear that they stopped using the switch at the end of the shift rod sometime in the early '50's it seems to me that this switch would solve this "problem" of the coil being energised while the cable is pulled. So either the "pull coil" is switched off by the limited travel the plunger has with the cable pulled or the "pull coil" is not damaged by staying energised.
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08-17-2023, 07:10 AM | #16 |
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Re: Ford Overdrive Solenoid 6 Volt or 12 Volt ?
The "pull coil" releases, or should, when the plunger begins to extend. The lower amperage hold-in coil remains energized and is sufficient to make the plunger complete its travel when you lift off the gas, allowing the drive plate notch to capture the pawl. You are correct that when the OD is locked out with the cable the plunger can't engage with the drive plate. The purpose of the "pull coil" is to get the plunger moving against the spring load that holds it in the retracted position. The moment the plunger begins to move the pull coil disconnects, leaving only the hold-in coil in the circuit. Both coils are energized until the pull coil disconnects regardless of OD shift lever position. Damage occurs when the heavy amperage pull coil remains energized all the time.
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08-17-2023, 04:04 PM | #17 |
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Re: Ford Overdrive Solenoid 6 Volt or 12 Volt ?
Mine has NEVER worked in 2nd gear for some reason. Had a time or two where OD in 2nd gear would have been handy.
FYI; using mine on a Model-A |
08-18-2023, 06:51 AM | #18 |
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Re: Ford Overdrive Solenoid 6 Volt or 12 Volt ?
Dobie, thanks so much for your help with this. I was thinking the pull coil would stay energised longer, thanks for setting me straight.
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08-18-2023, 07:33 PM | #19 |
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Re: Ford Overdrive Solenoid 6 Volt or 12 Volt ?
As I mentioned a few months ago in a post above, I've been having problems with my solenoid not working and straining the generator on rare occasions. Well, it became a not so rare issue and thankfully I obtained another 6 volt solenoid lately. I've installed it and will see how it behaves the rest of the summer.
I got the "new" solenoid from the local auto wrecker. It was in a 52 Studebaker Commander Coupe and I grabbed the whole transmission, relay with wiring and kickdown switch/linkage. Took the cover off the trans and it was in super nice condition inside, I suspect was rebuilt not long before the car was parked/abandoned. What is the going rate for a used Borg Warner OD these days? I don't want to give it away, but don't want to rip anyone off either. |
08-18-2023, 07:47 PM | #20 | |
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Re: Ford Overdrive Solenoid 6 Volt or 12 Volt ?
Quote:
I don't profess to be an expert on these OD transmissions (yet) as I've only been using one for over a year. However, I do remember when I first installed my OD, it would not work in second gear. The governor I used at that time was a 4 screw cover(out of a 53 Dodge). I took it apart, and it had a way to "adjust" the kick in speed. If I remember it right, there was a flat metal part that would bend under stress from the weights and would make the electrical connection. There was two notches for it (sorry I don't have pictures) and one of them made it engage at a lower speed, on my car with 3.54 gears it was around 35mph instead of around 45mph. It was much better, but I've since switched to a governor meant for the ford trans. (3 screw cover) It engages about 25 mph which is excellent and I love the OD shift in second gear. I'm curious, do you know what rear gearing you have? That would affect what rpm the governor engages, but also, you may be able to adjust your governor if it's the 4 screw design. I don't recall if the 3 screw unit was adjustable or not. Hope this helps. |
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