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47 not charging

Started by Ron Morey, August 13, 2017, 05:48:36 PM

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Ron Morey

I have a 47 series 61. The project has not run for 40+ yrs and was a parts car. I bought a generator and regulator, used of course. I have rewired the car and checked my work several times. It is not charging. I have performed the basic checks including polarizing the generator. In order to check the compatibility of the generator and regulator these are the numbers. If anyone can tell me whether they are compatible I would very much appreciate it. The regulators I have are 1118201-6V-N and 1118725-6V-N. The generator is number 1102693 7D30. The generator numbers are difficult to read on the tag. Any info is appreciated, then I can see where to go next. Thanks, Ron Morey.

Bobby B

Ron,
Hi. Didn't I run these numbers for you a few posts back? Generator # 1102693  goes with Regulator #118202  6Volt  35 Amp  Positive Ground.
                                                                                                      Bobby
1947 Cadillac Series 62 Convertible Coupe
1968 Mustang Convertible
1973 Mustang Convertible
1969 Jaguar E-Type Roadster
1971 Datsun 240Z
1979 H-D FLH

Paul Phillips

If you have an 'old time' auto electrical shop nearby, it is worth taking both the generator and regulator in and have them do a functional test on the pair.  Much better to see which device is not working than to do random parts changing.  Initial reaction from the p/n's is the regulator is the wrong type, but I would expect it to charge at least partially even when wired for pos. ground.

Good luck!
Paul
Paul Phillips CLC#27214
1941 60 Special (6019S)
1949 60 Special (6069X)
1937 Packard Super 8 Convertible Victoria
1910 Oakland Model 24 Runabout

Bill Ingler #7799

1118201 is a 6 volt Negative ground regulator and was used on early 46 Cadillac and goes with 1102693. Late 46 and 47 the regulator used was 1118301 another negative ground which also went with 1102693. Generator 1102693 was also used in 1942 and was used then with 1118202 a positive ground regulator as 42 was still positive ground. 1118725 is a 6 volt negative ground regulator and was used on 1952 Cadillac's.  As Paul has said have the generator and regulator checked out to see which one is causing the problem.   Bill 

Ron Morey

Thanks to all who responded and took the time to look the info up. Bobby B I somehow missed your earlier response. Still can't find it. Thanks again. You are all a helpful and very much appreciated resource. Ron M

Bobby B

I'll jog your memory.....

Frank,
Hi....I will try to help you out with this. From the Vintage Delco-Remy Manuals, here's what you're dealing with. Not Gospel, but a good base point. Some of the years cross over, so you have to be sure what you're dealing with. You can see that 1942 and 1946-47 can cross over from Positive to Negative Ground, and also use a different Voltage Regulator. Try and find which regulator was used with the Generator you want to substitute. If it's the later 6V Negative Ground version, it's no problem converting. You just need to know what components are compatible with one another. Hope this helps!
               Bobby

Year             Generator #         Regulator#     Voltage     Amperage
1940-1941     1102661-686        118202         6V Pos          35
1942              1102693-694        118202        6V Pos          35
1946-48         1102693               118242        6V Neg         35


Bobby B you are the man, thanks for this info. I picked up an old regulator from a 40's Cadillac. Exact year unknown as it was just a shell and I didn't check because I didn't know the early ones were P ground. I have two regulators and neither seem to work. One is a 118201 marked 6V N. The other is a 1118725 6V N. The stamped number is correct 1118725. Do you know if both of these are Negative ground or did they mark them oddly as Negative live? Thanks again. Ron Morey
1947 Cadillac Series 62 Convertible Coupe
1968 Mustang Convertible
1973 Mustang Convertible
1969 Jaguar E-Type Roadster
1971 Datsun 240Z
1979 H-D FLH

Ron Morey

Thanks to all who helped. Happy news. After much head scratching with no indication of the source of the lack of generator output I took it to a local shop. They were very helpful several years ago on an english car I was restoring. For the sum of $15 CDN and 15minutes of waiting, he told me the case had too much paint between the end plates and the center housing. I didn't even know there was any paint there. He cleaned it and said all is well. I took it home and still could not get it to function on the bench using a 10A power supply with the regulator and a small load. After installation it does indeed charge the battery. I still have some work to do as the output appears to fluctuate-it was high with a sudden drop to low. The ammeter does move in the right direction for the first time in about 40years. Ron Morey.