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Craftsman tractor hydro fan blade replacement


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07-01-16, 08:16 AM   #1  
Craftsman tractor hydro fan blade replacement

Craftsman garden tractor 917.273022 quit moving with no warning. I removed deck and crawled underneath to take a peek. Found that the fins on the hydro fan have been sheared off.
Wondering if replacing hydro fan will solve the problem? (Could I be so lucky?)
What is the easiest way to replace the hydro fan?

 
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07-01-16, 11:32 AM   #2  
The fan won't solve the problem but it should be replaced if the tranny is still good. If your fuel tank is in the rear then you bout have to drop the tranny to replace it, if your battery is under the seat, you can probably get to through there.

Check to make sure the belt is on all the pulleys and on the correct side of each pulley.
Inspect the belt for glazing, cracking or any obvious damage.


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07-01-16, 12:24 PM   #3  
If it quit suddenly,then the belt probably jumped off somewhere. With the fan blades knocked off, I would suspect the belt jumped off that pulley mounted with the fan and ripped them off.


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07-01-16, 12:30 PM   #4  
All the fan does is cool the hydro units, even if they where gone the unit would still move, something had to have failed to cause the fins to break off.
Broken belt, worn belt that came off the pulleys, broken idler pulley spring, idler bearings shot, idler pivot not moving.
That's a few things I've seen causing this issue.

 
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07-03-16, 05:32 PM   #5  
Craftsman garden tractor won't move

Craftsman garden tractor 917.273022 stopped moving suddenly. Noticed hydro fan fins are sheared off. It also appears engine pulley above electric clutch is frozen. I have tried to hand turn it to no avail. Have tried turning it with brake on and with brake off .. frozen. Is this pulley separate from, or part of, the electric clutch?

 
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07-03-16, 09:32 PM   #6  
I moved your new post about the same thing in with your old post. Lets keep it all in one thread, there are already suggestions posted in reply to your last question. The pulley above the clutch is keyed to the engine shaft, it doesn't turn unless the engine is turning. I believe you will find that your belt is wedged under the transmission pulley.


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07-09-16, 11:09 AM   #7  
hydro fan replaced ... still no go

installed new hydro fan ... mower still not moving. I am hearing a whirling sound ... would that be tranny woes?

 
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07-09-16, 09:06 PM   #8  
Can you see the transmission pulley turning? Did you take a wheel off to fix a flat or anything before this happened? As mentioned, replacing the fan wont make it work again.


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07-10-16, 08:15 AM   #9  
All pulleys turning ... no wheels removed

 
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07-10-16, 09:41 AM   #10  
Is the release lever pushed in?


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07-10-16, 11:20 AM   #11  
Release lever ... meaning "brake"? Is not in lock position.

 
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07-10-16, 11:22 AM   #12  
The release at the rear of the tractor that you pull to release pressure on the Hydro to push it.


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07-10-16, 11:33 AM   #13  
It is in "drive" position. (Not in "push/tow" position

 
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07-10-16, 11:34 AM   #14  
Page 16 of the owners manual 917273022 CRAFTSMAN TRACTOR Manual | Sears PartsDirect

Ok...
Did you remove the pulley to replace the fan? I can't tell from the IPL where your battery is located..???


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07-10-16, 12:03 PM   #15  
I replaced drive belt last season. It still seems to be nice and tight and not worn.

 
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07-10-16, 12:13 PM   #16  
Yes pulley idler removed to replace fan. I took photos to be sure of reassembly. (Page 40) .... battery is under the hood.

 
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07-10-16, 12:48 PM   #17  
The pulley should be splined...is it stripped?
If all of this checks out it might be an internal issue with the Hydro.


Did you remove the unit to do the repair?


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07-10-16, 01:43 PM   #18  
Stripped splines in the transmission pulley was my next thought as well.


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07-10-16, 02:55 PM   #19  
Stripped splines? Don't know what that would look like ... ???

 
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07-10-16, 04:19 PM   #20  
The fan idler pulley, fan adapter and hydro fan are held together with 2 screws. Does a splined pulley have teethlike notches that would match up to gears?

 
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07-10-16, 07:49 PM   #21  
Most hydro transmissions have a shaft that comes out with splines on it, like teeth, that mesh with matching splines in the pulley so that when the pulley turns, it turns the shaft too. Often the pulley gets loose over time and starts to wear the splines until the strip out and then the pulley turns without turning the shaft on the transmission. If this happens, you usually stop suddenly and hear a whirring noise from the stripped splines jumping past each other quickly just like you described.


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07-11-16, 10:57 AM   #22  
Thx ... now a dumb blond question (and I'm not blond!) How do I keep the transaxle pulley from spinning so I can remove the 7/8 bolt that holds it on the shaft? ... This really sucks as I am retired and have been planning on selling my little ranch and moving to a retirement community as it is getting harder for this independent girl to keep up with it all!

 
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07-11-16, 11:02 AM   #23  
BTW ... I have removed rear tire and rear is on jack stands. There is a hole in the frame to easily get to transaxle pulley bolt. Trying to figure out a way to clamp the pulley to keep it from spinning.

 
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07-11-16, 06:48 PM   #24  
If you can turn the nut and it turns the pulley even with you trying to keep it from turning, then the splines are probably not stripped. Unfortunately, that means the problem is probably internal.


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07-12-16, 06:23 AM   #25  
I was afraid that was the case. In 2008 a friend rebuilt the tranny ... at that time many parts were already discontinued and he actually had to weld a part to make it work. Considering she has kept around 5 of my 9 acres mowed for 18 years I guess it is time to say she has bit the dust and look for a replacement. THANKS for all the input!!

 
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07-12-16, 09:51 PM   #26  
Aww. I would suspect the welded part broke for it to have suddenly stopped like that. Hydros usually fail slowly and gradually. Oh well. You might find a trans for it online... they aren't that uncommon. I could probably think of two or three of them locally off the top of my head.


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