WD wiring HELP

Jona

Member
How can I wire my WD 45 as I have 12v Bat. 6 v coil, and a 6v generator so do I need a reister ?
And how do I connect to amp. Gage and gen.?
See pics.
Could someone please draw wiring dig.
a204958.jpg
 
6 volt generator can not charge a 12 volt battery no matter what you do unless you have it reworked to 12 volts or switch to an alternator
 
He is probably using a 12 volt regulator. It usually works ok with a 6 volt generator. The wire from the regulator terminal marked BAT will go to the Ammeter. You will need a resister to go to a 6 volt coil.
 
I"m wondering why it has the factory power steering unit, plus a steering motor ahead of it?
 
Just for yall's information, I have successfully (and more then once) used a 6 volt Generator to charge a 12 volt battery BY USING A 12 VOLT VOLTAGE REGULATOR. Now before anyone has a calf I'm NOT saying it charged at any super high rate, Im ONLY saying it worked and charged the 12 volt battery.

To do it engineering correct, a shop can change out the Field coils and convert it to a true 12 volt generator.

To use a 6 volt coil on a 12 volt tractor you need to add a series voltage dropping (12 down to 6) Ballast Resistor between IGN switch and coils input

The BAT terminal on the Voltage Regulator wires to the LOAD (NOT Battery) side of your ammeter.
Ammeters other SUPPLY terminal gets to the hot ungrounded battery post, often where the big battery cable attaches to starter
switch/solenoid
GEN/ARM on VR wires to gennys ARM post
FLD on VR wires to gennys FLD post

My recommendation as an engineer would be to have a shop change the genny to a 12 volt or get a 12 volt genny or else use an Alternator. You can use a 6 volt coil PLUS Ballast or a full true 12 volt coil no ballast required

John T Long retired Electrical Engineer
 
John T wouldn't he be cost wise to just put a 12 volt Alternator on it. I had a 6 volt genny go bad on my Farmall tractor that went bad and what they wanted to rebuilt it was twice the price of a new 6 volt alternator and I had to change nothing. The alternator keeps the battery charged better because tractor is used for short periods of time.
 
I would agree, a 3 wire older GM 12 volt alternator (if he goes the 12 volt route) is reliable and cheaper then buying or restoring a Generator. Id guess a 6 volt alternator may cost more then a 12??? A Generator was talked about so I just threw that info out there.

John T
 
I put the one wire 6 volt alternator on Farmall B with mag. It fit right in where the genny fit with a little modification to mounting brackets. The old genny was so bad it needed a total rebuild. All the totally rebuilt genny that I looked at where around $200.00 and I gave around $90.00. Seeing as tractor had mag I didn't have to change any thing.
 
I have been trying to restor this tractor had trouble getting the pivot pin out
Now I have new brakes and adjusted corectorle
Yes factory power steering
New steering wheel, bat.,and box,new brakes, gauges,
Side rails off and cleaned painted,much
Ian going to sell it.do you think I could get $3.800 for it?
Jack
 
Doubt it. Thats the sad part of "restoring" old tractors. You will never see the money back. Might be worth $2,000 if the tires are new or near new.
AaronSEIA
 
I had one on a WD.....used only the large housing pictured, along with the pump,oil reservoir under the hood, as pictured...but not the first steering generator.
 
"6 volt generator can not charge a 12 volt battery no matter what you do"

NOT TRUE I have done it (worked okay and didn't have a problem) by simply using a 12 volt voltage regulator.

Here's why, a Generator increases its output by EITHER turning it faster OR increasing the current you pump through its field coils. HOWEVER if you run too much current through the fields there's a risk they could overheat, but if you don't run too much current (and they may well be conservatively rated) they can work okay as my 6/12 conversions did.

NOTE Im NOT saying its the engineering or best way to do it, ONLY that it can work and remain okay provided you don't use too much field current and exceed heat dissipation ratings.

SO IT CAN INDEED BE DONE AND WORK OKAY WITH NO PROBLEMS (mine did fine) even if its NOT the best or correct way. The better way is have a genny shop replace the field coils.

Hope this helps yall understand.

John T retired Electrical Engineer
 

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