Kubota BX25D Dash

[Bpowell224]

I'm new to the forum and tractor ownership here so thanks ahead for the help and I'll go ahead and apologize for being long winded here. I bought a 2014 kubota BX25D a few weeks ago and was hoping you guys could help me out with an issue with the dash. I was digging up some stumps with the backhoe and as i was trying to lift a stump up with the backhoe and a root poked underneath my rear wheel fender and caught my taillight wires and pulled the red wire apart and blew the fuse that controlled most of all the lighting and dash. I fixed up the wire and tucked everything back up nicely and replaced the fuse and everything besides the hour meter and tach are working now. The tach does the self check with key on but just hangs out at 0 while in use and the hour meter doesn't count. So I found some wiring diagrams and saw that they get an input signal from the alternator. I started the tractor, unplugged the 3 wire connector at the back of the alternator and checked for voltage at the pin that sent signal to the dash. I got 0 volts. I also checked for voltage at the connector for the dash panel itself and still 0 volts as i was worried that maybe the other wires on that connector on alternator might have been needed to get a signal to the dash. Then it hit me, is my alternator even working? I checked battery voltage with tractor at mid RPMs after starting and it was sitting at 12 volts for the system. So I'm thinking that when that wire broke it might have killed the regulator and/or alternator. As I'm sure most of you all know, kubota alternators are EXPENSIVE! So I came here to get confirmation of what my diagnoses is and if there is possibly something I missed along the way? Any recommendations on where to get an alternator at or should I try replacing the regulator? I found the kubota alternators to be around 300 and found an aftermarket one on amazon for 188. I appreciate everyones input and assistance as I don't want to just throw money on a 300 dollar alternator for no reason :banghead:

 

[kwbretired]

Have you looked into getting the alternator rebuilt, may be the cheaper route. How many hours on the tractor - before the hour meter quit working.

 

[AndyMA]

There are many aftermarket alternators available

Places like this


New Alternator Kubota Tractor L225 L225DT L255 L255DT L255F M495

Andy

 

[Bpowell224]

Thanks for the response guys. Around 200 hours. I got an aftermarket alternator and replaced it. And of course with my luck lately it still is not charging and no change to hour meter or tach. I have Battery voltage to the back of the alternator. Everything is hooked up properly to the alternator, I checked it dozens of times. I am at 11.8 volts after starting the tractor and changing the rpms does not make a difference. I am lost now. Is there an inline fuse somewhere? Or some sort of control signal to alternator other than battery voltage?

 

[Bpowell224]

Is it possible that the new alternator is defective? I am lost as to why its still not charging. Seems to be a straight forward design. Battery voltage in on single wire. Ground through mounting. I checked voltage at that terminal with ground terminal of the multimeter on the alternator. I turned on lighting and voltage while running drops to 11.4 and with everything off while running I am at 11.8 volts.

 

[Bpowell224]

Would a place like autozone be able to run my alternator on a benchtest to verify if it is bad?

 

[Bpowell224]

So at the 3 wire connector on the back of the alternator the white/red wire is reading 10.8 volts and battery voltage is 11.8. The yellow/red wire is reading no voltage and no continuity. And i belive my sky blue wire is signal to dash. Can anyone tell me where that leads me to next?

 

[Bpowell224]

I found a wiring diagram that confirms that the sky blue lead is signal to the tach and hour meter and the yellow/red wire is chassis ground, and white/red wire is voltage. Am I getting no continuity at yellow/red with it unplugged because it is using ground from the alternator or is it suppose to be providing ground to the alternator? Any help here would be great. If i can verify that these wires are reading properly then it will confirm my thought that the alternator might be defective. Thanks guys!