Kubota BX25

[Sodo]

3500 rpm, that's one hotrod BX! I hardly ever ran mine at full RPM (which I think was 2400?) usually just enough RPM to get the job done. Plus low RPM saves the hourmeter. I sold my BX - it was a great tractor but I needed more lift capacity & bigger wheels.

If a plastic fan was out of balance I don't think you could possibly know it. In fact if you lost a couple blades you wouldn't know it either. If anybody can offer a link to the best how-to thread (replacing the fan) I bet the OP would appreciate it.

With regards to the aftermarket, a low-cost and easy to install "fan guard" (just a grating to block sticks) could be a useful BX accessory that could not impede air circulation. For most sales it should be "bolt on", most customers won't drill a hole. I've seen the big BX skidplates and think they are overkill. I never bought one because it's like swatting a fly with a hammer. Many customers prefer overkill.

 

[junkyardwarrior]

3500 rpm, that's one hotrod BX! I hardly ever ran mine at full RPM (which I think was 2400?) usually just enough RPM to get the job done. Plus low RPM saves the hourmeter. I sold my BX - it was a great tractor but I needed more lift capacity & bigger wheels.

If a plastic fan was out of balance I don't think you could possibly know it. In fact if you lost a couple blades you wouldn't know it either. If anybody can offer a link to the best how-to thread (replacing the fan) I bet the OP would appreciate it.

No, one does not know if the fan is broken or out of balance. It's an inspection point, just something I look at while I'm under there changing the fuel filters and/or power steering hoses when they break.

3500 RPM is the rated speed for the engine on the BX and as such, is what the PTO's and hydraulic pump gets it's rating from. At 2400-2500 RPM, the little baby hydraulic pump is SLOOOW. It idles at 1200 RPM. It's a baby engine and needs RPM to make power. The engine cooling fan and water pump and HST charge pump also need speed (cooling comes from fluid flow through the cooler core, then from a fan blowing/pulling air across the core fins). I suggest to run it at full throttle most of the time. Hour meter runs off of the key switch. Long as the key is on, hours run up. On the old 2200's and some of the 1500/1800's, there was a way to run the engine without running up hours (it was easy and I have caught some of my customers doing it for warranty purposes), but the BX50 series and newer stopped that problem. Running the engine slower doesn't slow down the hours. Friend of mine has a BX24, bought it from the original owner. The original owner kept bringing it back to me complaining that the hours kept running up on their own, while the tractor was parked in the barn/shed. I looked at it and as long as the key was off, no hours were counting. Anyway after several visits and the owner telling me I don't know what I'm talking about, I suggested to put up a cheap game camera in the shed to see what is turning the key on, if nothing else but to eliminate what was going on. Turns out that one of the barn cats was playing with the key chain. It had a paracord style key chain that kind of dangled and the little cat kept batting at it. One pic showed cat playing, few frames later, key was turned on. This went on for about 2 years, and ran about 4500 hours up on the hour meter and he bought 3 batteries in 2 years because once they'd sit all week or several weeks at a time, the hourmeter and sometimes the lights would run the battery down. I told him to pull the key out, and that fixed that problem.

I stand behind the statement, it could be made of concrete and steel but owners will still find ways to break them.

The HST fan does 2 jobs. It helps push air across the HST cooling fins, and it helps keep dirt and debris from staying on the HST. A pressure washer under there once in a while makes a big difference in the longevity. If ya'll have ever had to replace an HST on a BX, you'd think that the HST fan R&R was easy (and it isn't hard).

 

[ultrarunner]

There was a thread by someone the machined a two piece aluminum fan when his broke... looked to be a great solution.

The only fans I have noticed broken have been on used tractors for sale...