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Hydro Fan Removal


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#1 BairleaFarm OFFLINE  

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Posted August 15, 2014 - 02:28 PM

Does anyone know how to get the hydro fan off the u joint on a 990?



#2 Sawdust OFFLINE  

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Posted August 15, 2014 - 08:22 PM

I had the same problem on mine. I soaked the shaft & yoke area with WD40, applied a little heat.  I placed a ball joint remover tool between the shaft & pump housing. I tapped on this lightly & it came loose. Since my fan was already split I cut it off to get it out of my way. I will be replacing the fan with a new one.

Page 105 of my Thread     http://gardentractor...-mtd-990/page-7


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#3 BairleaFarm OFFLINE  

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Posted August 16, 2014 - 12:11 PM

So does the u joint just sit on the hydro shop with no roll pin?

#4 Sawdust OFFLINE  

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Posted August 16, 2014 - 02:31 PM

Mine never had any just a key way & slid off. The other end to the engine had a roll pin.

#5 BairleaFarm OFFLINE  

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Posted August 16, 2014 - 04:45 PM

Ok thanks. I didn't want to start yanking just to find out there was something holding it on.

#6 VTXrider ONLINE  

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Posted August 16, 2014 - 04:59 PM

Ideally the drive shaft u-joint is suppose to slide a little on the pump shaft, should there be flexing between the engine and transmission. Much like a car drive shaft. Over time the u-joint rusts and freezes to the pump shaft. The exploded parts view shows the key under the u-joint end.

 

I put grease or anti-seize on the shaft when reassembling.  

Attached Thumbnails

  • fan.jpg

Edited by VTXrider, August 16, 2014 - 05:00 PM.

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