Pin bosses rubbing on dirt guard

Check the track frame on that side, particularly behind the idler. One side or the other of the frame may have cracked and that would let the idler move side to side. Also check the adjuster nuts on the frame pivot underneath the tranny. If the ones on one side worked loose, the frame itself can move side to side.

Put a wrench on the four attachment cap screws that hold the dead axle outer bearing support to the frame rails....may have sheared allowing the frame to cock.

There are no adjuster screws where the diagonal brace attaches to the dead axle under the trans case, just four cap screw in the trunion.

Check frame alignment to get a better handle on what is happening.

Lots of things to check.

I don't know if the dirt guards are the light weight type like the 7u agg. cats, but it could be as easy as the guard got bent in the stumping job. It is allways nice when the fix is simple.

I have checked track frame and roller mounts on the effected side and everything looks good. Tomorrow I will remove the inner roller dirt guard to see if there is something hiding behind that.
I also checked the bolts holding the track frame beneath the transmission and they were tight. I wonder if the cap might be cracked. It is hard to tell without pulling the bolts off and checking.
The roller guards are heavy stock but I will put a straight edge on it tomorrow to check it.
Thanks for the help guys.

Are you sure that the track had not come off the bottom rollers and caught in the outer guard,it could have gone back on again and thats why you can't find where its rubbing,about the only other place where the pins run close to the frame is at the sprocket,check at the back of the frame,might be a lump of rock or the like,look at blade push arm for a pin that could have drifted in and be getting caught in the track,no luck get the tracks off the ground and a second person in the seat and the noise should lead you to the cause.
AJ