Why a Collar on Winch Driveshaft

[w30bob]

Hi Guys,

I noticed in the pic of the winch driveshaft in the ORD it shows a large circular collar that goes on the driveshaft on the PTO end of the shaft. The ORD says it was discontinued pretty early on, but I don't see what purpose it had. The shaft was keyed and held to it's yoke with a set screw on the winch end, and moved freely via splines on the PTO end. Does anyone know what the collar was for?

thanks,
bob

[xm708]

copied this from a website sounds legit to me ??


Shaft collars with a set screw are the most economical method for limiting the range of travel along a shaft and holding a device onto a ½” diameter shaft. They are commonly used for industrial and manufacturing applications. Used on axle shafts, machine tools, etc.

[w30bob]

Hi XM

Ah.....got it. The collar stops the driveshaft from disengaging from the winch input shaft and sliding into the splined yoke on the PTO end if the shear pin breaks. So I wonder why they stopped using the collar? Something else had to change as well. Guess I need to find someone with a new M that doesn't have the collar and see what prevents the shaft from moving when the shear pin breaks.

thanks,
bob

[Cal_Gary]

Mine is very snug at the winch end, so if the shear pin (in my case a Grade 2 bolt per Charles' advice) snapped I'd have ample time to stop mine before the end slid off.
Gary

[w30bob]

Hi CG,

Are ya sure of that? Not trying to be a wise-ass, but that snug fit probably won't stay that way if the yoke starts spinning on the winch input shaft.....which it will when the pin breaks. It's going to self-clearance itself and get loose pretty fast. I don't have a copy of the later ORD for the B1 series....but if anyone does.....what keeps the driveshaft from sliding back when the shear pin breaks?

regards,
bob

[Elwood]

Hi CG,

Are ya sure of that? Not trying to be a wise-ass, but that snug fit probably won't stay that way if the yoke starts spinning on the winch input shaft.....which it will when the pin breaks. It's going to self-clearance itself and get loose pretty fast. I don't have a copy of the later ORD for the B1 series....but if anyone does.....what keeps the driveshaft from sliding back when the shear pin breaks?

regards,
bob

Old thread, but no one has replied about the differences between the old and new winch driveshafts, and I was looking at the extra shaft I have on hand compared to the ORD 9 SNL. Bob, since the p/n for the shaft changed, i.e. it wasn't just a deletion of the collar after truck s/n 80020449, perhaps the splines on the later shaft (which is actually an earlier design, based on the G507 grouping of the part number for the later shaft) do not extend as far on the shaft? Once the yoke on the PTO end bottoms on the splines, it would effectively perform the same function as the collar.

[w30bob]

Hi Elwood,

Ahh..........that makes sense. I need to get myself as copy of the ORD for the B1. Seems more than a few things changed, and I get the feeling most don't know what those changes were. Thanks for looking into that!

regards,
bob