ford 8n voltage regulator

Blubog · Mar 23, 2012

got a 1952 8n tring to get it to charge. I bought a new wiring harness and regulator still no charge. Is the regulator grounded to tractor or is it rubber mounted? I noticeed some are isolated. I have the regulator bolted to tractor and there is a ground wire coming from gen that I have grounded to one of the screws holding the cover on the regulator.
If this is right my gen must be bad

Blubog · Mar 23, 2012

I also just noticed my coil was hooked up wrong. previous owner had power from key going to +

Anonymous-0 · Mar 23, 2012

The regulator is not isolated from ground.Theres a metal clip over one of the grommets that connects the regulator frame to the tractor ground.A ground wire from generator to the regulators frame was added to improve the connection.You cant assume anything on charging systems.An open shunt coil in the regulator cutout relay can keep a good generator from charging.

trouttman · Mar 23, 2012

(quoted from post at 22:03:21 03/22/12) got a 1952 8n tring to get it to charge. I bought a new wiring harness and regulator still no charge. Is the regulator grounded to tractor or is it rubber mounted? I noticeed some are isolated. I have the regulator bolted to tractor and there is a ground wire coming from gen that I have grounded to one of the screws holding the cover on the regulator.
If this is right my gen must be bad

have you checked the brushes in the gen?

trouttman

Bruce(VA) · Mar 23, 2012

" I bought a new wiring harness and regulator still no charge. "

Your time & money would be better spent troubleshooting the problem before you buy parts.

Follow the flow chart below to determine the problem.

50 Tips

Bruce(VA) · Mar 23, 2012

" I also just noticed my coil was hooked up wrong"

That depends..........

Is the tractor 6v or 12v? If it's 6v, it should be positive ground.
50 Tips

Blubog · Mar 23, 2012

it's still 6v postive ground. the wiring was bad and the regulator was missing cover the parts I replaced need it even it they worked

R Geiger · Mar 23, 2012

(quoted from post at 22:32:46 03/23/12) it's still 6v postive ground. the wiring was bad and the regulator was missing cover the parts I replaced need it even it they worked

There is a good section on this in the FO-4 service manual. MIght be time to get one.

Dell (WA) · Mar 23, 2012

Blubog........you ask "Is the regulator grounded to tractor or is it rubber mounted?".......yes, early squarecan voltage regulators were rubber baby buggy bumper mounted to absorb the pounding and bouncing of the tractor driving across tilled ground. That is WHY you have the genny GROUND post wired to the sheet metal can attach screw. It grounds the rubber isolation squarecan voltage regulator ...or... the modern metal plate attached voltage regulator. (which is much more rugged than the original squarecan voltage regulator)

BTW........6V-gennys are very rugged and seldom go bad. Even the brushes last a very loooooong time. And unlike 12V alternators, 6V-gennys can be positive or negative ground. All ya haffta do is "polarize" both yer genny and V/R to match yer battery ground. Just "arc-spark" yer squarecan BAT & ARM side-by-side terminals, engine OFF. You can "polarize" as many times as it takes to feel warm'n'fuzzy ...er... charged. .......the charged Dell

S Russell (TX) · Mar 23, 2012

My new NAPA regulator did not work either , messed with grounding and "polarized" till I was sick of it. Then took cover off of the regualtor and pushed down on the "Points" of the regulator (with a pencil eraser), it Worked. Adjusted them down slightly and it has been charging ever since.
Yours may differ.

ford 8n voltage regulator

Blubog

New User

Blubog

New User

Anonymous-0

Well-known Member

trouttman

Member

Bruce(VA)

Member

Bruce(VA)

Member

Blubog

New User

R Geiger

Well-known Member

Dell (WA)

Well-known Member

S Russell (TX)

Member

Similar threads