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farmall h

O

ohiojeff

Member
sons h will not charge his 2 month old battery but tractor stays running with battery disconnected,it is a 12 volt system,any thoughts ?
 
The h was a 6 volt, generator system originally. If it has a mag, it will not need a battery to run. I would say you have a wiring issue if the alternator has output.
 
Jeff,I think its the charging system..11.8 volts isn't enough to charge a 12 volt battery..you need an output of 13.8 to 14.3 to charge a 12v
 
If the tractor has a battery ignition distributor then the alt must be putting out something or the tractor would stop running when the battery was disconnected. If the tractor has a magneto ignition system then the alt would be irrelevant to the running of the tractor since the magneto makes its own spark without the battery.
Zach
 
(quoted from post at 19:02:10 10/09/12) does this mean alternator is bad or could wiring be an issue,such as corrosion or a short?
Click to expand...
It could be either the alternator or wiring.
You can measure the output from the alternator, or take it off and down to your local parts store to have it tested. They normally do that for free.
If it tests good, likely wired wrong or has a bad connection.
 
quickest way to ruin an alternater is to disconnect the battery while the vehicle (tractor) is running. BTDT :(
 
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