420 c Changing the bracket from the frame track carriers

[mc_mike]

I am trying to change the bracket that is riveted on to the frame and is bolted and clamped to the square tube that carries the track. I have a Model 90 loader still on the machine. I have the transmission out already for another issue so I can get at the bracket easily. I can't seem to get the bracket out. Is it necessary to loosen all 4 brackets and the loader brackets to get it off? Should I rivet it back on or use bolts. I would rather use bolts since I can't get at the back side of the rivet with the loader still on. Any help would be appreicated.

[Jimmy in NC]

Why do you want to cut those rivets? You will never ever get them as tight as they did at Deere originally. Bolts will continue to loosen up over time and cause serious hassles.

Here is how someone loosened them on my 420C...



That being loose caused the undercarriage to move and act almost as suspension... well... that ate a steering clutch housing.

What I'm getting at is if you need that removed take the time and pull the side plate. While it seems like more hassle now it is, in the long run, much easier.

The rivets were originally hot set rivets (if my memory serves me correct from talking with Lavoy) which makes an extremely tight bond as they cool. He has even tried to fix some in the past (again if my memory serves me correct) and had poor poor results.



Now as I've re-read that I am wondering if you are talking about the four carriage bolts and the bottom cap that goes on to the cross shaft. If that's the case I've broken all mine off, driven them out, and then ordered new bolts from Deere. They aren't that expensive and they are a much better carriage bolt than they have at the hardware store.




Jimmy in NC