farmall h not charging

Anonymous-0 · Jul 24, 2014

I am having problems with my 1948 h , seems I can't get it to charge the battery.
I had the generator checked, installed a new regulator, rewired all the old wires, the ammeter shows it is charging way to much, but in realty there is no charge getting back to the battery. It is the original 6v setup.

souNdguy · Jul 24, 2014

static battery is 6.3v charge should be 6.9-7.2 'or so'

have you motor tested your generator?

if it passes a motor test, hook it back up and full field test it.

if still nothing.. bypass cutout.

if it passed motor test and you can full field it and bypass cutout and still nada. double check that wireing that shows charge but none at battery.

i suspect that first!!

mkirsch · Jul 24, 2014

A 1948 would have a cutout, not a regulator, unless it was converted.

A cutout is manually controlled by the light switch. Four positions: Low charge, High charge, Dim light, Bright light.

If you replaced the cutout with a regulator, and did not rewire it correctly, I would imagine that something akin to what you're seeing might happen.

First off, is the meter reading a charge correctly, or is it showing a massive discharge?

Second off, how do you know the charge is not reaching the battery? The only way to know that is to use a voltmeter across the battery terminals. If it's charging as hard as it says it is, the battery voltage should be over 7. If it's only around 6, then it is not charging.

John T · Jul 24, 2014

Im kind of with MK is this. I wonder if shes wired correct??

For starters: If it had a Cutout Relay and a LHDB (Low or High Charge) light switch the gennys FLD post wires to that switch HOWEVER if it has a full fledged Voltage Regulator the gennys FLD wires to the VR and NOT up to the light switch.

If its wired right the BAT terminal on a VR or Relay wires to the ammeters Load terminal while its other Supply terminal eventually gets to the hot ungrounded battery post, often by being wired to the big battery cable on the starter switch. The charge goes through the ammeter then gets to the battery.

Not knowing if its wired right Im hesitant but remember a good charged battery should read around 6.3 volts setting but if coupled to a good charging system and shes running at high RPM Id expect the voltage to rise to at least 6.5 up to around 7 volts depending on RPM and battery and genny and VR.

Once shes wired right run my Troubleshooting Procedure linked below to see if non charging is fault of genny or VR

John T
John Ts Troubleshooting

Ellis Kinney · Jul 25, 2014

Try switching the wires at the ammeter. I had an M that showed a slight discharge all the time after I got it back from the dealer and they had wired the meter backwards. Ellis

farmall h not charging

Anonymous-0

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souNdguy

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mkirsch

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John T

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Ellis Kinney

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