shear pin?? size??

[the grump]

Cub 149 14HP cast iron Kohler. sheared the drive shaft pin near the motor. what size/grade bolt?? What do I use for a replacement?? Thanks in advance.

first post!!!! got the tractor apart down in the garden. gotta get it fixed and finish my work.

the grump.

[redwaycc]

1/4" x 1 1/2" dowel pin, IH-19837-R1.

[Amigatec]

This is what happens when you use a bolt instead of a pin.

[redwaycc]

and then you break out the welder and fix it like this......
driveshaft1.JPGdriveshaft2.JPG
driveshaft3.JPGdriveshaft4.JPG


welcome to OCC grump!

[the grump]

thanks fellas,

i looked up the part number IH-19837-R1 redway, thanks. that looks to be a solid pin. i put a soft, grade#2, 1/4" bolt in the driveline to get it back up to the shop.

i'll switch it out tommorow. thanks again.

the grump.

[Lmercer]

I never had any luck with those pins. I even bought a new slotted collar, driveshaft and I would still snap pins. I have a crossbreed 1650 with a 10HP in it and was using the wrong driveshaft for the 1650. I was using the same setup that Amigatec has pictured.

When I switched to the 1650 set up, there isn't any 'kickback' in that slot, 'cause there isn't a slot.

If it keeps breaking, I would think about doing something different.

[Matt G.]

Lmercer-

The reason you were breaking all of those pins was because that is the wrong driveshaft for a 1650. That hardened pin doesn't like to flex, and trying to make it act like a flex coupler on a rubber mounted engine is just going to make it break.

[Lmercer]

Originally Posted by Matt G.

Lmercer-

The reason you were breaking all of those pins was because that is the wrong driveshaft for a 1650. That hardened pin doesn't like to flex, and trying to make it act like a flex coupler on a rubber mounted engine is just going to make it break.

Thanks Matt. If I understand you right, you only use that set up on a solid mounted engine?

[Matt G.]

Yep, that's exactly right