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06-05-2013, 08:08 AM | #1 |
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Mobil Votage regulator. Is this for a Ford or GM
I've Googled, Yahooed and Binged, to no avail. It's a Mobil MC-6 adjustable, 6 volt , + or - ground. I know from the barn there is a difference in the fields but, don't know how to tell.
Thanks Rich Last edited by solidaxle; 06-05-2013 at 08:39 AM. Reason: added pics |
06-05-2013, 11:18 AM | #2 |
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Re: Mobil Votage regulator. Is this for a Ford or GM
I am looking at an Echlin handbook showing ground paths for Ford and GM circuits...
From what I can see you should have continuity with a test light between A and F terminal on a Ford, between F and the base of the regulator if GM. Be aware if you get no continuity nohow, many old but new regulators have some corrosion or crud on contacts and need a bit of polishing. |
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06-05-2013, 11:48 AM | #3 |
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Re: Mobil Votage regulator. Is this for a Ford or GM
I will try to locate my Echlin parts interchange book and see if it is listed. Atleast then you will have a more common part number to work with. Rod
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06-05-2013, 12:19 PM | #4 | |
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Re: Mobil Votage regulator. Is this for a Ford or GM
Quote:
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06-05-2013, 12:25 PM | #5 |
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Re: Mobil Votage regulator. Is this for a Ford or GM
I found the cross reference book and have no listings for Mobil coils. Rod
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06-05-2013, 12:38 PM | #6 |
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Re: Mobil Votage regulator. Is this for a Ford or GM
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06-05-2013, 12:57 PM | #7 |
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Re: Mobil Votage regulator. Is this for a Ford or GM
I also found a MC-6 listed for Bendix P&D that cross references to Echlin NAPA CS-1750. I have ncver seen a CS prefix to be a voltage reugulator, most are condencors but still worth a shot. Hard to say who Mobil sourced the parts from. Rod
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06-05-2013, 01:07 PM | #8 |
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Re: Mobil Votage regulator. Is this for a Ford or GM
I found it, but it is alittle confusing as listed but is NAPA Echlin part numbers.
VR-22(2) VR-25(1) VR-27(1) Rod |
06-05-2013, 01:11 PM | #9 |
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Re: Mobil Votage regulator. Is this for a Ford or GM
CS-1750 is a set of points for a mercury outboard, so the number there is just a coincidental match. I've looked into about 1950 and 1975 Echlin books with no useful hits. I would make the continuity test above, then carefully check out paths across all contacts against a known Ford. If it seems Ford...99% of those will be the standard amp level '40-55 type.
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06-05-2013, 01:13 PM | #10 |
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Re: Mobil Votage regulator. Is this for a Ford or GM
Those 3 are Willys and two Chrysler...I think they will have nonford grounding. Check the grounding continuity! Those numbers don't have reversible polarity.
Last edited by Bruce Lancaster; 06-05-2013 at 01:28 PM. |
06-05-2013, 01:29 PM | #11 |
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Re: Mobil Votage regulator. Is this for a Ford or GM
The Mobil part numbers are pretty obscure, they only took up about 2" of one colum on the second to the last page in the book. There are 6 colums per page so they were easy to miss the first time through the book. Rod
Last edited by Rowdy; 06-05-2013 at 01:42 PM. |
06-05-2013, 04:02 PM | #12 |
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Re: Mobil Votage regulator. Is this for a Ford or GM
On the instructions, it says.
TO POLARIZE GENERATOR: With engine off, connect a short jumper lead to regulator "Arm or Gen". Terminal, FIRST. Then, momentarily touch other end to regulator "Bat". Terminal. This seems to coincide with a Ford Vr, with the exception of removing the wire from the Arm terminal and flashing it to the Batt., instead of a jumper. Not sure how a GM one is polarized. |
06-05-2013, 07:39 PM | #13 |
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Re: Mobil Votage regulator. Is this for a Ford or GM
Generally speaking, polarizing is achieved by the following:
If the generator case is the earth, then all you have to do is earth the case (to the battery post that will be the earth post) and form a momentary circuit(more than once is good) by applying power to the field coils (usually the small wire or terminal of the two) What you are doing is setting the polarity of the iron magnets inside those field windings. This should be done every time before a generator is installed. If it's wrong, when you turn the key off, the regulator contacts stay shut, the battery feeds the generator, the generator tries to "motor"(run), and because the fan belt is holding the pulley, the generator and regulator burn out. |
06-05-2013, 09:32 PM | #14 | |
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Re: Mobil Votage regulator. Is this for a Ford or GM
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My reason to quote the instructions to polarize was to determine if it's a Ford VR or a GM VR. |
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06-05-2013, 09:33 PM | #15 |
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Re: Mobil Votage regulator. Is this for a Ford or GM
I have one on my 48. Works good.
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06-06-2013, 12:18 AM | #16 |
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Re: Mobil Votage regulator. Is this for a Ford or GM
Hi Solid axle. Not trying to slight you in any way. Just trying help those who don't know, with a few basics, that I know about. Cheers.
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06-06-2013, 06:52 AM | #17 | |
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Re: Mobil Votage regulator. Is this for a Ford or GM
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FLA48 says he has one working on his car. I'll give it a try. I have a big to do list this weekend, to make it to Guptiles car show Monday. Thanks for all the responses. |
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06-06-2013, 07:50 AM | #18 | |
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Re: Mobil Votage regulator. Is this for a Ford or GM
Quote:
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06-06-2013, 08:08 AM | #19 |
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Re: Mobil Votage regulator. Is this for a Ford or GM
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06-06-2013, 08:38 AM | #20 |
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Re: Mobil Votage regulator. Is this for a Ford or GM
I do believe the instructions you posted for the polarization are Delco style. For a Ford you remove F from reg and touch to B...check the ground path through regulator, as in post 2.
I believe that will show the difference between Ford and the common Delco circuit. The reversible polarity feature sort of points to Ford, but I believe the actual ground path will tell you. The instructions you posted are NOT the correct ones for '39-62 Fords. |
06-06-2013, 09:38 AM | #21 | |
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Re: Mobil Votage regulator. Is this for a Ford or GM
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I think the instructions are leaning toward GM ,do to the fact there are using a jumper instead of lifting the wire off the terminal. |
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06-06-2013, 10:43 AM | #22 |
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Re: Mobil Votage regulator. Is this for a Ford or GM
Hmmmm...staring intently at ancient NAPA manual...I think only Ford should have the continuity between A and F. The ground lug and the ability to function with either polarity are also Fordlike traits. Maybe you have a Ford reg and GM polarizing instructions...
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06-06-2013, 11:09 AM | #23 | |
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Re: Mobil Votage regulator. Is this for a Ford or GM
Quote:
I did a internet search on polarizing a generator and found alot of conflicting procedures. Ford and GM are close but Mopar is the odd man out. Since FLA48 posted he has one working in his ride. I'm going to go with that and give her a try and do some testing. |
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06-06-2013, 11:14 AM | #24 |
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Re: Mobil Votage regulator. Is this for a Ford or GM
That would be my approach to...put the fire extinguisher in reach and give the thing a test!
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07-19-2013, 07:32 AM | #25 |
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Re: Mobil Votage regulator. Is this for a Ford or GM
Just an up date. The Mobile regulator is an A circuit, It will not work on a Ford. Ford uses a B circuit.
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