b2650 upgrade alternator?

mecan · Nov 19, 2015

I have a b2650 rops and have found the need for a bigger alternator. Does anyone know of a kit, or if the cabbed one has a bigger one? I'm pretty sure I could make something work but hesitant to go changing to non approved ways at least until my warranty is out. Thanks for any input. Adam

herringchoker · Nov 19, 2015

Check with your dealer re your model. Kubota has (had?) an alternator upgrade kit for the B-series. I installed the upgrade on my B7800 about 10 years ago. The kit cost about $200 CDN back then.

mecan · Nov 19, 2015

I'll check again with them, maybe have them see if the cabbed comes with a differance one.

Farmall45b · Nov 19, 2015

The alternator on the tractor should be a 60 amp. What do you need more power for? I think it is a denso alternator so it should be pretty easy to get a larger capacity one or take the one you have to a alternator shop and have them upgrade it. You might also find an online retailer to buy parts from to upgrade your current alternator. It is pretty simple to replace a stator and rotor with upgraded components.

mecan · Nov 20, 2015

It's defiantly not a 60amp, not a classical looking alternator but can't think of the name. Put 2 180watts led light bars on and 2 more 18w at led floods. Put a voltmeter onto the battery while it's running, no lights and it's around 14 volts, lights on and it drops to 12.5ish.

Toolguy · Nov 20, 2015

It is called a Dynamo. Basically just a DC generator good for about 13 amps of output. Enough to run the tractor and one rear worklight. To run your extra lights you need to upgrade to an alternator. When I bought my B3030 in 2005 I added the alternator kit from Kubota. It is 43 amps and come with all the hardware and wire to install it. I have 3 extra 55 watt halogen lights on the ROPS. No problems at all and I still have the original battery. Good luck.

mecan · Nov 20, 2015

Dynamo, thanks I couldn't think of that this morning, not enough coffee at the time. Do you remember were you got your kit? Parts counter, sales guy or?
Thanks adam

Toolguy · Nov 20, 2015

I talked to the salesman that I bought the tractor from. I would think that you could get it through parts. It is a common upgrade.

Farmall45b · Nov 20, 2015

You might want to check and see if it is cheaper through what Kubota calls "wholegoods". This is often cheaper than ordering the individual components through the parts department. Sales should be able to help you out with this.

mecan · Nov 20, 2015

Thanks for the advice. I looked through some parts diagrams on their website and found the rops comes with a dynamo while the cab comes with a 60 amp alternator.