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01-19-2014, 03:09 PM | #1 |
Member
Join Date: Jan 2014
Posts: 66
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cut out wires reversed
during the once over on an A I purchased I noticed the ford script cut out has the wires reversed hot wire on arm side. I figured the previous owner made a mistake. here is the problem if I turn the cut out around the case covers the arm wire. if I leave the cut out where it is the arm wire has to stretch around to the front connector and seems short. shorting across the cut out shows a charge on the ammeter. whats up?
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01-19-2014, 03:45 PM | #2 |
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Join Date: May 2010
Location: So Cal
Posts: 8,751
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Re: cut out wires reversed
If you jump the cutout with the engine off and the ammeter shows a charge either the battery is in backwards
or charged backwards or you need to reverse the wires on the back of the ammeter. Bob |
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01-19-2014, 04:19 PM | #3 |
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Re: cut out wires reversed
ok, lets try this again. the cut out on the generator is mounted where the terminal marked bat the is to the rear and arm terminal to the front. the wire out of the generator was hooked to the cut outs bat terminal ( probably because it wont reach around the cut out). I tried to turn the cut out around to get the arm terminal next to the arm wire but the case covers the arm wire and crimps it. the mounting bracket is offset. im thinking there must be more than one style cut out.
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01-19-2014, 04:48 PM | #4 |
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Join Date: May 2010
Location: Mpls, MN
Posts: 27,582
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Re: cut out wires reversed
A picture would sure help, but if you have wires coming throught he generator case then it was made later than the Model A generators. If you have two wires coming out then one is the armature output and the other wire is the field ground wire, which can be fastened under the cutout mounting screw. When you touch the ammeter wire to the cutout there should be no spark (battery drain).
Is the cutout backwards, or did someone just put the cutout cover on backwards? |
01-19-2014, 06:36 PM | #5 |
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Location: So Cal
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Re: cut out wires reversed
Do you have a round or rectangular cutout? I think the round one should fit either way.
Bob |
01-19-2014, 07:28 PM | #6 |
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Re: cut out wires reversed
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01-19-2014, 09:14 PM | #7 |
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Join Date: May 2010
Location: Mpls, MN
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Re: cut out wires reversed
Model A long style generators had the output post toward the front of the generator and also had a rear ball bearing for the armature shaft until about March 1930, then the rear bearing was changed to a bushing and the output stud was moved towards the rear of the case. After the Model A production ended the generatos had wires coming through a rubber grommet.
Model A cutouts should all have open mounting feet and the opening faces the output stud. Later cutouts had closed mounting tabs, but still mounted as the Model A cutouts did, that is the short side faces the output stud. Yes, a diode will fit in your cutout case. Any chance the cutout cover was put on backards, or do you have the short side of the cutout facing the output wire? |
01-19-2014, 10:24 PM | #8 |
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Join Date: Jan 2014
Posts: 66
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Re: cut out wires reversed
thanks tom. looks like I have a later style generator and the cut out had later closed mounting tabs. will go the diode route. It doesn't look as if the cover has been removed, until I put the diode in. cant wait to road test it.
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