2006 cub cadet pulley system, 4wd Trail 20 hp kohler model 37ac466d710

[Dave P]

Bought a used 4x4, engine runs. Tried rebuilding both pulleys. Ended up buying a transmission pulley system. The new one is aftermarket. The old one wallowed out and fell off.

The new one seems not to have enough splines inside. Seems like it is freewheeling. When it revs up and gets smaller pulley diameter, does it jump on the spline shaft? The driver pulley on the engine gets larger when it revs up. Had to make a pvc collar for the belt to sit on in the grove. No parts for sale on this pulley. Is the belt supposed to sit at the bottom? There must be a trick to get the belt on. Any ideas?

 

Thanks Dave in Florida

 

 

[that guy from Canada]

Belt install on most CVT transmissions reqires primary or engine pully to be removed or disassembled. 

Do you have pictures of this pulley system your description has me confused 

[Dave P]

On 1/19/2024 at 8:11 PM, that guy from Canada said:

Belt install on most CVT transmissions reqires primary or engine pully to be removed or disassembled. 

Do you have pictures of this pulley system your description has me confused 

Attached

[that guy from Canada]

Ok so it looks like you have to just clean the spline better

Its hard to lign up

 Looks like you jeed a new primary however 

[Dave P]

The driven cvt (trany side) is new. Seems like it free wheels on the spline. With the belt on it may grip the splines.

The driver cvt (engine side) was taken apart and a pvc pipe sleve was installed as no parts are available.

The most center bushing was worn out. When the engine runs it moves in and out.

Seems like the belt should sit at the bottom of the pulley. May not be wide enough at the bottom.

I am familar with autobody and mechanics never messed with variable pulley stuff.

 

Thanks for some help.

[that guy from Canada]

Try to spin driven pulley shaft by hand and make sure transmission is in gear. 

With driven pulley installed you should be able to turn it by hand and "drive" the utv thru the transmission.

If not its possible the transmission is damaged.

[Dave P]

thanks