C-22 Guard Hardware

[ricky racer]

What is the correct hardware for attaching the Guards to the mower bar? Mine has what looks like plow bolts which look correct but the holes are countersunk on both sides. The plow bolts fit nicely in the countersink but there are jam nuts on the back side which don't go fit a countersunk hole. Are the nuts supposed to have a taper on them, kind of like a lug nut? Or should there be a flat washer to cover the countersink and a nut?

[Glen]

Hi,
If your mower bar has countersunk holes in the top of it, it was made to use guards like the MD 989, the bolts went down through the guards, and the nut was on the bottom. The bottom of an MD 989 was flat where the nut goes.
I think later they made the MC 2041 guards, the bolts go up through them. The guard is countersunk on the bottom for the bolt head. The bar used with them is flat where the nuts go, on the top side, they use flat nuts.
If you are using MC 2041 guards, or other similar guards, where the bolt faces up through the bar, IH had, and Case IH still has, the last I checked, a sort of a tapered washer, that goes in the tapered hole, and fills the taper, and is level with the top of the bar.
Then regular nuts can be put on the top side of the bar.

I don't have a pic of one, they look like if you cut the head off a bolt that holds a guard on, and then drill a hole through it, the size of the bolt.

If you have a lathe, you could probably make them.

[tst]

yes the early guards used a tapered nut and they changed the guard later which are more common