farmerstan
New User
Can I change a jd 730 gas to negative ground ?
- Thread starter farmerstan
- Start date
Tx Jim
Well-known Member
- Location
- Coyote Flats, Texas
JD 730 gasoline powered tractor came from factory with two 6 volt batteries attached in series for 12 volts. Changing to negative ground is easy just follow Deltared's instructions
farmerstan
New User
farmerstan
New User
starter ?
Janicholson
Well-known Member
Polarizing the generator is needed. If the voltage regulator is intended for positive ground, it might not last as long as one that is. Jim
farmerstan
New User
OK
buickanddeere
Well-known Member
nope, 12V
wore out
Well-known Member
"It has positive ground because it has a generator."
???? there were MANY tractors and cars with generators that were (-) ground.
"If you change to an alternator, you have to change it to negative ground."
Also complete "horse pucky", alternators are readily available in either ground polarity, it's a matter of personal choice.
rustred
Well-known Member
i was taught that by a caterpillar instructor years ago. he explained the difference in neg. and pos. ground on an engine and the effect it
had on the tiny bubbles forming on the cyl's from vibrations on the power stroke. plus it is very important to keep the system pressurized
with a good cap. and yes there was something about the electrons and corrosion and all that physic's stuff. he taught us all in that class
and yes i do remember him saying about the positive ground and cavitation. and that was in 1996 and my ears hear this. so what does your WOW mean , im full of it or u didnt know.?
had on the tiny bubbles forming on the cyl's from vibrations on the power stroke. plus it is very important to keep the system pressurized
with a good cap. and yes there was something about the electrons and corrosion and all that physic's stuff. he taught us all in that class
and yes i do remember him saying about the positive ground and cavitation. and that was in 1996 and my ears hear this. so what does your WOW mean , im full of it or u didnt know.?
It was a theory back in the day but I only heard it being positive ground to reduce corrosion on the body and frame of a vehicle. I read some where a few years ago that some highway departments still run positive ground systems on their trucks for that reason. I believe it has been pretty difficult to prove or disprove it due to so many different conditions.
And often they were replaced by a 12 volt battery that was no where near the amperage that the 2 6 volts had. I never found much
difference between a positive ground and negative ground system. If it's having problems test and observe I doubt that changing the
polarity is going to effect much. The only reason I would change is if I was changing out the generator and the one going in was
designed for a negative ground system or needed to run something that was negative ground only. Your tractor is about 60 years old
check the cables and connections, make sure they're the right size and verify what ever battery(s) you have are pretty close to
what the factory specified when they built it.
difference between a positive ground and negative ground system. If it's having problems test and observe I doubt that changing the
polarity is going to effect much. The only reason I would change is if I was changing out the generator and the one going in was
designed for a negative ground system or needed to run something that was negative ground only. Your tractor is about 60 years old
check the cables and connections, make sure they're the right size and verify what ever battery(s) you have are pretty close to
what the factory specified when they built it.
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