Kubota BX25

[taralogan]

Need to know how to repalce fan on end of drive shift on a BX25. It keeps the tramsmision cool.

 

[Jeff F.]

Do a search on the owning/operating forum. There are quite a few threads there. Good luck, it doesn't sound like a fun project.

 

[Artisan]

Welcome,

...and after you get it fixed look into a Brotek or Bxpanded skid plate(s).
I have read about many a guy doing this repair. I do not think it will
be rocket science. Perhaps remove the FEL and store it far away
then remove the engine cowl using the 2 hand knobs right
under the Left & Right headlights you will see w/ the hood up.
Remove the screen your toes kick while your in the seat.
Now you can see a LOT...

Buy the fan, ask for the installation instructions if they are not
in the box!

Good luck, if your savvy to pics and forums, posting
up a tutorial would be cool!

 

[Cobranut]

Artisan, he's talking about the HST fan, not the engine fan.
You pull the floorboard and disconnect the driveshaft and rear HST drive hub. The fan is bolted to the hub.
It's an inexpensive part and a relatively easy fix, probably an hour or two max.

 

[JOHNTHOMAS]

Artisan, he's talking about the HST fan, not the engine fan.
You pull the floorboard and disconnect the driveshaft and rear HST drive hub. The fan is bolted to the hub.
It's an inexpensive part and a relatively easy fix, probably an hour or two max.

If you can do this repair this quick and easy you are the only one I've heard of that can over the past several years. This is considered the "worst" problem of BXs. This plastic fan costs just a few dollars for the part and hundreds of dollars for a dealer to replace it. On the Kubota Owners forum you can read many, many articles of the many tried fixes and so far I haven't seen a really great one other than the way the dealer does it. Some people have cut the fan in half and came up with different methods of getting it back to one piece to get it back to working.
Go here for actual owners experience.
Kubota Owning/Operating

 

[BXman98]

Replacing that fan is tricky to do because the replacing of the HST fan involves taking off the deck of the tractor so you can move the drive shaft around better. You should look into seeing how much it would cost you to have the dealer replace that for you, but if you do it yourself that would be great, try messaging and guy on tractor by net by the username of 4shorts, he has done that kind of work before. He can show you how to do it.

 

[junkyardwarrior]

It's not that bad. Removing the fenders and floor, can be done that way. I usually don't, however, just because it's a pain to do so by myself. Normally loosen the engine mounts and let the engine move forward just far enough to slide the shaft off of the transmission, then drop the shaft just far enough to get to the bolts. Not that the second method is "easy" by any means, but it can be done, and if you're doing it by yourself, it usually results in the least amount of newly invented words.

 

[Tractor Seabee]

Where are all our enterprising after market parts guys. Seems like a simple part to make in a light manufacturing environment to fabricate a fool proof 2 piece fan that will bolt on. I have heard that Kubota did it that way as all the shielding after market products restrict the air flow enough to cause HST overheating in hot weather and heavy loads. I would pay $100 to not have to mess doing it or tying my tractor down at the dealers for 2 weeks plus.

Ron

 

[Sodo]

I'd cut the old fan off, and cut the new one in half.

=============

Also the 'skidplate' doesn't have to survive a nuclear blast. ALL it has to do is reduce the chance a stick can get in there and break the fan. The 'skidplate' can be made of plywood. Full coverage and restricting airflow is not necessary. Its sole task is to prevent sticks from getting to the fan.

 

[junkyardwarrior]

It is one piece for a reason. It turns at engine speed (about 3500 RPM). When it gets loaded with grass, mud, etc, if it were 2 piece it would be mroe likely to fly apart. If it were metal, a stick jammed into it would increase the chance of it grabbing the stick or debris and destroying other stuff in that area.

Plastic, and one piece, is really the best option given it's location. One could design a complete 1/4" steel box around the fan and 100% guaranteed someone would destroy the guard and the fan and then gripe about how hard it is to replace it saying that it's a factory defect.

You can't please everyone. Especially not with tractors.

BTW, as someone who's been messing with the Kubota stuff for a very long time, I've not seen but 2 or 3 broken fans-and they're all on the BX23/24/25's. Never the 1500, 1800's, 2200's, 2350's, 2360's, etc. And even then, it's not the end of the world to replace it if you have just a little bit of mechanical ability. 2 or 3 broken fans out of a thousand (or more) that I've looked at during normal servicing is pretty good. My biggest gripe is that fuel filter in the middle, that requires removal of the mower deck for access. :yuck:

Kind of reminds me of the spark plug issues on the old 5.4L Ford engines. It was not a huge problem, but became well known because of the processes that were needed to fix it (either replace the head or machine the plug hole). And I've had several of those, 2 were Lightning engines and never had a plug come out like "they" said was such a big problem. I have, however, fixed one. And it ain't that bad. Just like the BX series HST fans.