Kubota Tractor Over Charge Problem

[Mark_BX25D]

Well…. you are correct, of course…. as this IS AN ALTERNATOR!

It gets rectified with a diode-bridge to output DC.

Yes, the AC gets rectified to a rather dirty DC, which does not have phases. It may be pulsed in many different ways, and it may vary in many differnet ways, but pulses and variations are not phases.

 

[Possqually]

Okay orange tractor experts, thanks for all of your valuable input. I wanted to give an update on the overcharging issue with my L245DT. I've replaced the external regulator, alternator and ignition switch. Ground from battery has been cleaned. She's still overcharging. Lugnut is probably right that it's somewhere in the wiring. Any ideas on where and best ways to check? Thanks!

 

[lynnmor]

Get an analog (needle) type of voltmeter and check at the battery. Report back.

 

[Mark_BX25D]

Ground from battery has been cleaned. She's still overcharging.

I'd get some 10 gauge (at least) wire (any color - this is temporary) and make an additional ground from the regulator to the negative battery post. This will give you a known-good ground.

Your connection might be great, but if the cable itself is flaky, you'll still have problems. A temporary known-good ground will eliminate this possibility, and it's easy to do.

Just make SURE everything on this temp ground wire is good. Wire and connections, both ends.

Can't hurt to do the same for the hot lead.

 

[lugbolt]

Do a voltage drop test on all of the regulator wires. If you don't know what that is, youtube search it.