5252 60" Deck gearbox slipping?

[OhioGuy]

I was mowing tonight and took a break after an hour or so, had a beverage, got back on the tractor and started it up.

When I engaged the PTO it didn't sound right and I noticed the blades were turning at maybe 1/4 speed. Engaging and disengaging didn't create that jolt I'm used to from the load of the blades either.

The PTO shaft into the gearbox appeared to be turning at the correct speed but the pulley on the output of the gearbox was too slow, I think.

Anything in the gearbox that can slip or maybe I lost a key out of the pulley.
The belt tension seemed OK.

I couldn't really investigate, I needed to finish mowing so I fired up the old 1872 and finished. The tractor is under warranty so beyond something real simple, it's going to the shop.

Thanks,
Curt

 

[OhioGuy]

Looked at the Cub tonight. There is a 1 3/4 socket bolt and nylon locknut on the gearbox end of the driveshaft. It had sheared off. Picked up replacement at the local hardware and I'm back in business.

I dont believe its intended to be a shear bolt, it just failed. I always idle way down before engaging the PTO, who knows?

Curt

 

[ducati996]

Im glad it was a simple fix....I suppose it would be a good thing if you used a shear bolt instead - just to give you an extra margin of safety for the drive train ....