H Wiring: Generator / Regulator

Posted by PurdueAg on May 03, 2005 at 16:20:46 from (198.109.220.6):

I have a 1942 H. 6-volt, positive ground
system. Generator is not charging. The
wiring box has a 4-position switch (L-H-D-B).
The generator has a black box mounted above
it that I think is a regulator. This regulator has
4 terminals. Three occur next to each other
and stick out from the side and include F, BAT,
and L. The fourth terminal is underneath the
box and appears to be unmarked. I am
assuming this is "GEN". I have the tractor and
lights wired and running, but I am not getting
any charge (only discharge -- especially when
I turn on the lights). I also suspect that I have
a drain on the battery even when tractor and
lights aren't running. I cleaned up the
commutator and all three brushes are in
contact with the commutator. I also
re-polarized the generator by touching the BAT
on the regulator to the A on the generator. Still
nothing. I have not cleaned the various wire
terminals inside the generator (just the A and
F on the top).

I am not entirely convinced that I have the thing
wired correctly and want to be before I take the
generator and regulator to a repair shop. I
can't find a diagram of a wire box that matches
my tractor. The one in my service manual
(newer reprint) has a fuse housing between
the ammeter and the light switch, whereas
mine has a fuse built right into the light switch.
Bob Mellville's wire box diagram also shows a
separate fuse housing.

The way I have it wired now is ammeter (neg.
terminal) to "BAT" on regulator. F on regulator
to F on the generator. "GEN" on regulator to A
on generator, and L on regulator to the fuse.
However, I have three wires attached to the
ammeter's positive terminal, and this definitely
doesn't match the way Bob Mellville has it.
Can anybody help me from this haphazzard
description?

Thanks in advance,

Tony

Follow Ups:

• Re: H Wiring: Generator / Regulator Yugrotcart 16:39:59 05/03/05 (1)
  • Re: H Wiring: Generator / Regulator PurdueAg 17:22:15 05/03/05 (0)

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