polarize

[noidea]

I tried to polarize my generator. It is on a cutout system. I was told to just take a hot wire and tape it against the posts on my generator. I did that life 5 different times and it is still charging the opposite way. If I take my tester and put it on A terminal and the other on the ground it shows a voltage below zero. What is the problem?

 

[Janicholson]

The cutout system uses the light switch for controling the charge rate. The L H D B switch grounds the field of the generator. When the switch is in L position there is a resistor placed in the field circuit. When in the H and D and B positions, the generator is putting out max. (direct grounded field through that switch) So the first thing to do is to use a jumper to ground the F terminal of the gen (smaller one). then use a hot wire to momentarily touch the A terminal (armature, Big terminal).that should cause a spark (not real big, but substantial). Then disconnect the jumper from the grounded field terminal, and start the tractor. use the light switch to go from L to H. If no output, while it is still running, put the jumper back on the F terminal. that should make it charge unless either the cutout relay is bad, or the gen is bad. Have a reliable shop test the gen and cutout. John T has some great info on this site, look it up in search for. JimN

 

[John T]

SAME ANSWER I JUST POSTED ON ANOTHER FORUM

You Polarize by momentarlily flash jumping NOT any permanent "taped" attachment.
NOTE DO NOT FLASH JUMP TO THE GENNYS FIELD POST ONLYYYYYY ITS ARM POST

On a 2 wire Cutout Relay system that would be to just momentarily flash jump the cutout relays BAT input and GEN/ARM output together and you should get a spark. Same things accomplished by flashing the relays BAT terminal direct down to the Gennys ARM post.

NOTE for Polarization to work the gennys Field post needs a ground current return path so you can temporarily dead ground the gennys field post to case/frame when you do the flash. It should already have a ground via the Low/High charge setting in the light switch and the field needs a ground current return path for it to charge you know which is dead grounded for high charge but via a resistor in the Low/High light switch for Low charge.......

Is the ammeter wired correct polarity??? If not it will register bass ackwards. If its wired correct if you turn on lights or ignition engine NOT runnig it should swing over to - discharge but then swing to + charge when running iffffffff the genny is working.

Was the tractor changed from Pos to Neg ground?????????? That would explain a backwards working ammeter unless its leads were swapped. The genny can still charge at EITHER polarity but the ammeter needs corrected and the coil (if it has one) needs leads swapped also as its somewhat polarity sensitive.

If shes charging the lights should glow noticeably brighter from slow idle to fast RPM and the batery voltage should rise from 6.3 volts to around 6.5 to 7 on a 6 volt system and double that on a 12 volt system. If that happens perhaps shes charging okay and its had a battery polarity swap and maybe all it needs is the ammeter leads reversed (check coil polarity also)

John T

 

[John T]

He had the same question on another forum so Im not sure if its an IHC or not???????? Our advice should be the same regardless unless its some odd Class B circuit like some Fords used huh

John T

 

[John T]

I was in a hurry I gotta help Ben tear down a grain bin grrrrrrrrrr and I see this is NOT the same question but close.

From what you say I wonder if you have harmed the genny by taping a hot wire to its Field??? When running the gennys arm post ought to be higher voltage then the battery and if yours is less Im afraid you have reversed polarity and the genny wasnt correctly re polarized after a batery reversal and Im unsure at what polarity the ammeter is now???

I gotta run but Jim n Bob n Bob M n the others can get you figured out Im sure but I question your batetry polarity and if you harmed the genny and your ammeter polarity in the meantime

John T

 

[Janicholson]

I assumed delco A style, but the info I included kinda drove that particular bus. JimN

 

[Anonymous-0]

You didnt say which tractor and what ground you have. None of the other responses asked either. You should have pos ground then just touch the batt term to the arm terminal on the gen with a piece of wire. It will spark and you are done then the ammeter should show charge when you start the engine. Im guessing that is why you say it is charging backwards as the ammeter is wired for pos ground. I you ever change the cut-out to a reg make sure you get a reg for the ground you are running as most new regulators will say pos gnd for the older stuff.