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charging system on converted super c from 6 to 12 volt suste

Z

zlfluffrider

New User
I recently purchased a new alternator for my 1951 Farmall Super C. My amp meter doesn't move unless i turn on lights. Then it goes negative a little. How can i determine if the alternator is charging or not? And what does the exciting the alt. accomplish. I have a red wire running from the F hookup on alternator that previous owner explained to me that i need to ground this to tractor in order to start the charging process within the alt. Need help in Otisville! John
 
We need to know the model of alternator you have purchased. If it is a Delco 10SI series, and if it is a regular automotive replacement alternator (not a special or "one wore", it will need a little wiring. We are very alternator savvy, there are just too many to give general detailed instructions. Jim
 
1) First of all, if you changed from original Positive over to Negative Ground as most alternators require, THE AMMETR LEADS NEED SWAPPED OR IT READS BASS ACKWARDS.

2) To see if its charging put a volt meter on the battery and at rest if full charged it will read 12.6 volts (half that for 6 volt battery). Then when running at fast RPM once the alternators has been excited, IT SHOULD RISE TO 13 TO 14+ VOLTS FOR A 12 VOLT SYSTEM (half for 6).

3) On "some" delco non one wire alternators the two small terminals may be labeled 1R and 2F or something like that. The No 2 terminal is VOLTAGE SENSE and wires to the big main rear output stud while the No 1 requires voltage to excite the alternator

4) Of course, the alternators big rear output stud has to get to the battery via the ammeter to charge it.

BUT LIKE JIM NOTED WE NEED MORE INFO TO BETTER ADVISE, I'm no alternator expert however

John T
 
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