BX22 HST Fan and Shaft Dust Boot Replacement

   / BX22 HST Fan and Shaft Dust Boot Replacement #1  

Mike_C

Gold Member
Joined
Feb 28, 2005
Messages
350
Location
Ohio, USA
Tractor
Kubota BX-22
The fan that cools that HST on the bx22 is a cheap plastic fan that is not well protected from branches that flip up under the tractor. I lost several blades off mine, so I ordered a new one (well 3 new ones to be exact). They are cheap, only $4 but it's not a 5 minute job! I tried to do it from underneath without removing the floor pan, but it just was not possible. I could not get the propeller shaft out of the way to get the fan off, so I had to remove the floor pan. First a picture of the broken fan before I replaced it:
 

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   / BX22 HST Fan and Shaft Dust Boot Replacement
  • Thread Starter
#2  
I found that just unbolting the propeller shaft was not enough. I had to remove the flanges to get it out of the way. To do this requires inside snap ring pliars. I also replaced a broken dust boot on the shaft in the process. Warning, after you remove the inside snap ring and pull out the shaft, there are 4 ball bearings on each end that tend to fall out and roll away! Don't lose them! Attached is a detailed photo of how the shaft mates into the flanges on both the engine side and the HST side:
 

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   / BX22 HST Fan and Shaft Dust Boot Replacement
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#3  
So as you can see you also need to remove an outside snap ring to replace the dust boot. Time from start to finish 3.5 hours. Next time will be faster; I was going slow to make sure I knew how to put it all back together. The new fan installed:
 

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   / BX22 HST Fan and Shaft Dust Boot Replacement #4  
with the pan off looks like easy access to lube any pivot points on levers and rods.
 
   / BX22 HST Fan and Shaft Dust Boot Replacement #5  
Mike,

Nice job. Thanks for the comprehensive how to on the fan replacement. Pics were great. Your efforts are certainly appreciated.

Jeff
 

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