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TE20 12V do I need a voltage regulator

M

MarkDennis

New User
Long time reader first time poster !

Playing with a TE20 in a long forgotten paddock, from what i gather its running an alternator, with negative earth. Bought a new coil and managed to get it running pretty roughly.

Now to my question, The way it is wired now its bypassing the voltage regulator. I'm making the wiring a little neater, what if anything would happen if i dont wire it through the voltage regulator again ? (the regulator thats on it now looks pretty trashed, filled with oil & grease and fairly corroded from a leaky battery)

Its not planned for anything major work-wise other than I hated seeing it rusting away down the back

Cheers in advance.
 
Times two , the alternator will regulate its own output and feedback from the battery . No need for the regulator at all . Is it a six or twelve volt tractor ? The six can be made to start on twelve but keep the starts short . Twelve volt models will have an air intake in the dash , sixes won't .
 
Most alternators have an internal regulator. Probably the old regulator was left behind from when it had a generator.

If it has a Delco alternator (most popular choice) and the plastic harness plug is rectangular, about 1/4" x 1", it has an internal regulator. If the plug is square, about 5/8", it is external and will need a regulator. Or it could be a "one wire" alternator, in which case it would have an internal regulator.

An easy test is to start it up, check it with a volt meter, should be 14-15 volts. If it's higher, whining, and getting hot, there is a problem. If it's lower, down around 12 volts or less, it's not charging.
 
Steve is correct. Put a voltmeter on your battery connections and check it out. If you don't need the VR, take it off and keep it on
the shelf for the next time you or someone buys a generator version that needs it.
 
I have a TO35 and switched over to an alternator this summer. I gutted a bit of the old voltage regulator and used it for a junction box for all the wiring.
 
Didn't want to start another TE wiring thread, from the many many posts already on this subject, none of which showed any without a voltage regulator however, thoughts on how i plan to re wire it as per below. (Alternator is a 12v Bosh unit)

 

Might be good to put the alternator on the other side of the ignition switch, so it can't drain the battery when the switch is turned off.
Although possibly I should have thought this through a little further before spouting off.
 
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