1250 hydro fan replace

[MrRazz]

Hi all.

I broke the hydro cooling fan on my 1250 the other day when a stick got up under my cub. I need to replace it. What is the process of removing the shaft? I tried using the search on the site but it keeps taking out the word "fan" on me. Also how does the old fan come off and the new one go on?

Thank you in advance!

[finsruskw]

You do not have to remove the driveshaft, only dis-connect everything on the rear end of it and slide forward enough to raise the shaft and then slide the old fan, flex disc joints and couplers off.'
Do not loose the ball bearing centering spacer between the couplers.

You may have to re-use the snap ring that secures the old fan if the replacement does not have one. Make sure it is in the correct position on the shaft as to not interfere with the lift linkage.

Also a good time to replace the spirol pins if they appear worn as well as the flex disc joints if they are hard, brittle and distorted.
Be sure to use spirol pins and NOT regular roll pins
Be sure to support the driveshaft with something solid when driving out the spirol pins using a 1/4" pin punch with the centering tit on the end.
Good luck!

[ol'George]

Originally Posted by finsruskw

You do not have to remove the driveshaft, only dis-connect everything on the rear end of it and slide forward enough to raise the shaft and then slide the old fan, rag joints and couplers off.'
Do not loose the ball bearing centering spacer between the couplers.

You may have to re-use the snap ring that secures the old fan if the replacement does not have one. Make sure it is in the correct position on the shaft as to not interfere with the lift linkage.

Also a good time to replace the spirol pins if they appear worn as well as the rag joints if they are hard, brittle and distorted.
Be sure to use spirol pins and NOT regular roll pins
Be sure to support the driveshaft with something solid when driving out the spirol pins using a 1/4" pin punch with the centering tit on the end.
Good luck!

If I may add,
make sure the fan is put on correctly so it cools the hydro and the curved blades are facing correctly or it will not have the airfoil effect.
I have seen a few on wrong.

[mortten]

I’ve found the fan likes to wonder a bit over time. I wrap some electrical tape around the shaft in front and behind the fan.

[MrRazz]

Thanks guys! How hard is it to get that pin out and slide the coupler off? I doubt the shaft has ever been removed before.

[ironman]

Originally Posted by MrRazz

Thanks guys! How hard is it to get that pin out and slide the coupler off? I doubt the shaft has ever been removed before.

Compared to going to see my proctologist, I would have a tough time deciding which I'd rather do.

[three4rd]

Originally Posted by finsruskw

You do not have to remove the driveshaft, only dis-connect everything on the rear end of it and slide forward enough to raise the shaft and then slide the old fan, flex disc joints and couplers off.'
Do not loose the ball bearing centering spacer between the couplers.

I'm confused since later on you refer to disconnecting the shaft from the front and removing the pin so as to slide on the fan. How can the fan be installed from the rear?

[R Bedell]

Re-read post #8. Pretty accurate description.

[Sam Mac]

There is a guy on Face Book that is selling a split fan that clamps over the drive shaft so you don't need to remove the shaft.

https://******************/commerce/...are_attachment

Well it looks like we are not allowed to post FB links so this is the sellers info.

Cub Cadet Hydro Fan - Easy install
$34
Listed a week ago in Watsontown, PA

Hello fellow Cub lovers, I am making replacement hydro fans.

Cub Cadet Hydro Fan - Easy Install

The EASY SWAP HYDRO FAN is available now!

For sale here only!!

Don’t overheat that expansive Cub Cadet Hytran Oil!!

As you see in the photos, I’m not just selling fans, I love these old yellow tractors!

I want to help keep them running!

I enjoy making attachments and finding interesting uses for Cubs.

I hope showing a photo of my ideas will inspire you to think outside the box!

Replace that broken Hydro fan on your Cub Cadet Hydrostatic tractor without removing the driveshaft! We know how much of a chore that is!!

This quick change fan fits Cub Cadet Models:

Narrow frame - 105,107,109,123,125,127,129,147.

Wide frame - 149,169,1250,1450,1650.

May fit other models with ⅝” driveshaft.

Price includes 1 EASY SWAP HYDRO FAN and detailed instructions for replacing your broken old fan.

Price is $34.00, USPS shipping IS included in this price to the lower 48 states.

Message for payment and shipping information.

Thank you for looking!!!
Watsontown, PA

Seller information
Rich Wright
Cub Cadet-Buy, Sale, Trade

[three4rd]

Originally Posted by Sam Mac

There is a guy on Face Book that is selling a split fan that clamps over the drive shaft so you don't need to remove the shaft.

Sam...thanks! Worth considering. Ozcubowner, on the other thread dealing with fan replacement, suggested cutting a fan in half and using hose clamps, and now here one is! I'd be curious to find out more about it. Existing fan probably easily removed by just knocking it apart with a small chisel or screwdriver.

I'm not a FB member so even having found his site, I wasn't able to contact him that way; however, did a search on his name and found a phone # so I left a message for him to get back to me. I'd like to see more detailed pictures of this split fan. I wonder how good it holds up? It'd be interesting to speak to someone who has been using one of these for a decent length of time. Surely would be a bummer to have the thing eventually fly apart at higher rpm and wind up damaging something.