Kubota 2150 alternator upgrade help

[moeh1]

Has anyone upgraded their machine? I originally thought I could try and squeeze in a small aftermarket alternator, but the spacing is tight and I think I might be better off with a stock set-up. I checked with the Tractorsmart folks, the whole goods part kit B9322 isn't available anymore. So I am looking for anyone who has upgraded theirs and saved the directions while Ronny looks for the individual parts.
Thanks in advance

 

[Soundguy]

Have you looked at other jap pattern tractors with higher amp alternators in a small package?

Soundguy

 

[wushaw]

How about going to a salvage yard and start looking under hoods (if their still there) and pick the size you need, it may take awhile but worth a shot.

 

[moeh1]

Yeah, I gave that a lot of thought. Tractor is in one spot, shops in another, long distance fab leaves alot to be desired. The whole goods kit really was a decent deal ( less than buying an alternator outright!), just isn't available anymore.
I think Ronny can come up with brackets etc. but I still need a few instructions on wiring, have to find/bypass the old external regulator etc.I posted and was hoping someone might have been here before me.....

 

[dfkrug]

It is worth looking for substitutes. I recently had my alternator
fail on my JD 955. The NipponDenso unit is very similar to, but
not the same as some small alternators found in Japanese small
cars. The ND in the JD is an Expensive part, new or rebuilt. You
can buy replacement internal regulators and rectifiers for $30-40.
Mine had a dead stator, so no dice on rebuilding it.

Anyway, I eventually discovered that the ND alternators in Suzuki
Sprints or Samurais would work cuz the Yanmar folks who made the
955 conveniently gave me an extra hole on the alternator support
bracket. The slightly bigger unit ($30) went right in and it is 55Amps,
too.

Another possibility is going with a self-exciting alternator, but that's
another story.

 

[Soundguy]

1 wire self exciters are yucky...

Stick with a 3 wire idiot lamp or triggered/tickled field type unit...

Soundguy

 

[moeh1]

Well, it took awhile but Tractorsmart got the instructions for me! Waahoo. They are for both B1750 and my 2150, decided to share in case anyone else goes down this path. They are PDF attached here. The parts do get pricey. I picked up the alternator off Ebay at an attractive price, so I'm going to slurge and get the others. It has new hood and air cleaner supports and a new multiple pulley system with 2 offset belts plaus relay and wiring harness, so I think I would have been in tough shape trying to stuff any odd junkyard alternator in here, which is what I had concluded before.

 

[TimP]

moeh1,

Yahoo ! That's it.

Now to try to round up the parts... but only AFTER I make sure I have to upgrade the alternator.

Do you think Kubota even has the parts any longer ?

 

[moeh1]

Tim, glad you found this.
Call or email Ronnie at tractorsmart, he was nice enough to do all the legwork for me after some other Kubota shops let me down and his prices are OK too. I remember a couple pieces took longer as they had to come from Japan, but I bet they still have everything available. I remember the v belt was old and it didn't last long.... I did get the alternator off ebay new as a takeoff, that saved hundreds$$$. Also, the new air cleaner bracket isn't really necessary. The old one is bolted in place, the new one has a rubber strap so you can pull the air cleaner easier. If I was doing it again, I wouldn't buy that part.

 

[TimP]

Marty,

Thank you again for all of the info.

I really appreciate it.

How long did the replacement take you when you did it ?

Weekend project ?

Of course, I could save all of this work if I could talk my wife into letting me upgrade to a B3030 with the Cab. But so far, I have not convincing enough.

 

[moeh1]

Tim,
I ordered and replaced all the waterpump/radiator hoses while I had everything apart. As I recall, and its fuzzy, it was an easy weekend project, and i have a loader frame in the way. Depending on where you live, you might tackle a block heater as well at the same time. That is real handy when the temp drops to zero minus.

 

[TimP]

Marty,

Thanks for that info.

I am in Basltimore and extreme cold isn't a regular factor, plus I keep my Bota in the Garage.

I have seen some 40 Amp Alternators on fleabay for slightly more than $100.

They claim to be compatible with my B2150, so I may go ahead and order from ebay.

I'll give Ronnie at TractorSmart a call and see what the cost will be for the other parts necessary.

And from what I can tell.... the OEM Alternator only puts out 14-15 Amps. A far cry from the 40 Amps the upgraded Alternator would put out.

The OEM "may" allow me to put on some LED lights at 2 AMPS each.

 

[TimP]

Marty,

Sorry to ask so many questions.

You mentioned you found the upgraded alternator on ebay as a take-off. Do you mean it was taken off a Kubota tractor and parted out for sale ?

I get next to no real results for the upgraded alternator with a google search.

I think that Denso makes a replacement which is compatible, but not sure.

I have sent an email off to Ronnie at TractorSmart and I'm waiting for a reply.

I asked him to see if the Kubota upgrade alternator is available too and the price.

***UPDATE*** Ron responded with pricing. He can ALL of the parts including the dynamo. GULP.... $890.47.

He would have to get the parts from various other dealers around the country, but he can get it all.

So. Now I gotta decide if it's worth the money.

Tim

 

[moeh1]

The alternator was a brand new take off from a Kubota engine that needed a bigger one for some stationary application. The guy that was listing them did this all the time and had a large number available. I found it by searching on the part number which you have in the instructions. I think that number got updated over time, so you may have to do a little hunting. I paid about $70 instead of about $300 new as best I can recall. Good luck with the project.

 

[TimP]

Hi Marty.

I hope you can help....

I am stuck with the installation of the new Alternator on my B2150.

The parts include 2 bearings ( Part #08141-06310 ) and a pulley plus a pulley shaft with snap rings etc.

I have ruined one of the bearing already trying to get it into the pulley.

What's the secret method to getting the bearings into that pulley ?

Or do I have it wrong and the bearings do not go inside the pulley ?

It sure seems like they should. Unfortunately, I don't have a bearing press.

Any help/guidance would be appreciated.

And I also have 4 small flat washer "with rubber? I have no clue where those go. Any insights?

Thanks, Tim

 

[moeh1]

Tim,
too long ago to remember the details. The picture in the instructions shows the bearings going into the pulley. My guess is I probably gently pounded them into the pulley with a socket ( so it only pushes on the outer edge), or that I used a vice to squeeze them in ( again with a socket). The rubber washers are #34 and they go on the hood bracket.

 

[TimP]

Thanks Marty.

I have managed to ruin one bearing while trying to press it into the pulley, but managed to get the other one installed. I have ordered a replacement bearing and have to wait for it to arrive ( Wednesday ).

Any recollection of where/how you ran the wiring harness ?

The instructions say to secure it to the "engine injection pipe", but not sure what they mean.

I may just try to run the new harness to be sure it's not touching the exhaust manifold/pipe.

While I'm waiting for the new bearing, I'm going to try to do everything else I can, so all I have to do is press in the second bearing and mount the alternator.

I have to say the instructions aren't much help. More of a general guide, if anything.

I swear, it took me 4 hours just to try figure out exactly how to mount the new alternator bracket. After that, it started to fall into place a little more.

You and Ronnie from TractorSmart have been the saving grace on this project.

After this is done, I have to install the work lights and I'm getting new tires on the tractor.

Then I should be set for a while..... unless I decide to mount a radio or something else.

 

[TimP]

I have successfully completed the installation of the new alternator.

I have not yet tested the voltage output, but I'm pretty certain all is good.

One question I have about the belt adjustment though?.

Do you have any idea how in the heck you are supposed to tighten up the lower belt properly ?

If you look at the Pulley Parts diagram, Part 030 (pulley shaft) is secured with a lock washer and nut. And then there is part #130 (Adjusting Bolt) which foes into part #120 (Retainer Spring).

Once you put the adjusting bolt into the retainer spring, you cannot reach the nut on the pulley shaft to loosen or tighten it.

I would think the best way to adjust the tightness of the lower belt, would be to tighten up on the adjusting bolt to slide the pulley, but that cant really be done unless you can loosen and tighten the nut on the shaft.

What I ended up doing was to use a bar/screwdriver to put pressure on the shaft of the lower tension pulley while the nut was loose and then held it into position and tightened up the nut. THEN I tightened up the so called adjusting bolt to help hold it into place.

It's a weird set-up, and I wonder if there is some method to this madness that I can't see.

Any suggestions for the future when I need to adjust the lower belt again ?

Thanks again for all of your help.

Regards, Tim