ih 460 not starting after messing with vr and genarator

kevinbarry · Feb 16, 2014

I have an ih 460 and i beilived that the genarotor was not working properly so i installed a new amp guage and when i turn the lights on it goes +10 instead of -10......i seen another forurm on here where you jump the BAT AND THE GEN MAIN and when i did that for one second it did not change the polarity like stated in another fourm. i did this again now the trctor will cranck over but now will not start. ive never had a problem with it before and checked my fuse in control board and its fine and the amp guage still works.....right now im more worried about starting it than my gen not working

David G · Feb 16, 2014

To start with, measure voltage, not current to determine if generator is charging.

You ampmeter is probably wired backwards if it goes to + when the lights are on, but that has nothing to do with starting or charging.

Make sure you have voltage to the coil when cranking or running.

Zachary Hoyt · Feb 16, 2014

If you hook up the wires backward on the ammeter it will read backward. My 300 has the ammeter that was on it when I got it, though I had to replace the other gauges. It reads backward because I converted it to 12V - ground and did not bother to swap the leads. I just ignore the charge and discharge symbols and know which way means what, and no one else drives the tractor anyway.
Zach

rustred · Feb 16, 2014

your ammeter wires are backwards, but it should still start. you must have power to the coil for it to start. just take a piece of wire and run it to the coil from battery pos. it should start. then just polarize it when running, from batt. pos. to arm. for a slit second. this will not fix your not starting problem though.

kevinbarry · Feb 16, 2014

TO ALL
when you say backwards on the ammeter i tried taking my battery wire from VR and put it on the - side of the ampmeter nd it did the same right now im in the proess of putting back on the old VR because i just got a generic one from the farm store.

kevinbarry · Feb 16, 2014

when you say coil are you referring to vr or gen?

Janicholson · Feb 16, 2014

The diagram shown in the link is for your tractor. It is correct. The wiring of your new amp gauge is on the wrong terminals. Wire it like the diagram, then if it still shows charge when it is not running and the lights are turned on, take the wires from the right terminal on the amp gauge and swap them with those on the left. No other mods are needed.
To polarize the generator (assuming positive ground, but either way is OK as long as the coil to distributor wire attaches to the coil small terminal with the same polarity as the battery)
With all things hooked up and the key off, touch a jumper between the Bat terminal on the regulator to the Gen (or arm) terminal on the regulator. this shoots a polarity charge into the generator magnitizing the field poles.
Jim
The diagram from Bob M

Janicholson · Feb 16, 2014

To the ignition coil near the distributor. Jim

kevinbarry · Feb 16, 2014

ok i put the old VR back on just now and it fired right up with no choke and it is 15 degrees out side(good running tractor) in my opion

so i took a volt meter and set it on 20 vdc and this is what i got.. '
i out the red on my BAT and my black on Ground and recived right around 12 vdc

when i take red to my GEN on my VR and black to ground i received .24-.26 does this tell me anything?

kevinbarry · Feb 16, 2014

ok i took volt meter to coil and i was just showing .33?

kevinbarry · Feb 16, 2014

ok so i got the tractor up and runnin and ammeter is showing negative now when i strt and turn lights on and when i disconnect the POS from battery it still show like - 4 on ammeter when shut off and no power going to it now if i could just figure out why its not charging i would be in business

not much more mechanical parts i can replace before its new

Janicholson · Feb 16, 2014

Do not disconnect the battery with it running. It is not a test that means anything, and will possibly destroy components. Especially on alternator equipped machines.
If it is not running and you turn on the lights, does it move to the left, discharge?
if so at least the amp gauge and lights are correct. If it shows no charge when running, and stays running when you pulled off the bat POS (don't do it again) it is charging, but you may have the wire from the Bat terminal on the regulator hooked to the wrong side of the amp meter. Check that if so.
When running the voltage on a well charged battery should be about 14.2 to 14.6 volts. if the bat is down a little it might be 14 volts.
This is measured from bat terminal to bat terminal at 3/4 throttle. If it is in that range it is charging. If the amp meter shows discharge, the wires are still not right from the Regulator to the amp gauge. Jim

El Toro · Feb 17, 2014

Use a volt meter to see if there's voltage to your coil when your ignition switch is in the on position. If there's no voltage check your ignition switch to see if there's voltage being fed to the switch.
Check for voltage on the switch terminal to your coil when its in the on position. If there's no voltage present you need a new switch and if have voltage replace the wire from the switch to your coil. Hal

ih 460 not starting after messing with vr and genarator

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