Splitting my 125
 

Look how bad my trunnion is. I’ve started splitting my 125 today. My shop manual doesn’t say anything about my three point lift linkage, will I have to remove it to get my tractor apart? Also it says I must remove the brake rod but the hydraulic oil filter is in the way. Do y’all just remove the oil filter to get your brake rod out?

I don't know how the three point fits into the equation since my doesn't
have one but I do know. You do not need to take the filter off. In
fact I would want it on there going in and out to keep crud out of the hydro.
You should be able to take the break rod apart. Just follow it up from
the brake going into the rear end and disconnect the first break in it you come
to. Or take it apart right at the brake itself.

Ken

3 point will have to be disconnected as well
At the rear end would be the easiest I suppose.

I got it out without removing the filter. The part that has the Chevy bow tie seems to have the most wear. Can that be shimmed up? The trunnion springs won’t stay in place. No wonder my hydro was erratic.

Up close to the hydro unit.

Mine looked much like yours just not quite as much miss alignment.

I welded mine up and filed it back to spec, using a piece of 3/4" key stock as a guide. I could have milled it, but this was pretty quick and easy. I then very slowly and carefully put the arm under the press to get it centered in the trunnion, checking it several times to get it just right. My springs were in spec, but I may still put a couple of thin shim washers in there anyway. Sam Mac had a thread on him doing that.

Trunnion after cleaning. It doesn’t look that bad, it’s the bow tie piece and the piece the control rod connects to that are so sloppy. I have .030” of gap between the external snap ring and the bow tie piece at the fulcrum. There is .025” between the snap ring and the piece that moves the bow tie piece at its fulcrum. I’m sure shims will help my slop. I need both springs and their retainers as well. You guys already connected me with a guy that rebuilds relief valves, so I have enough to keep me busy next weekend.

Welded up and re-centred

That looks great!