Since it is apart, depending on what the clutch and flywheel look like and how many hours on it. I would most likely just replace the clutch. With a quality one not a cheapie off the internet.
If the machine has a double clutch, a REBUILT clutch and disc assembly from New Holland is well over 2 grand with $400 core charge. New one is about $2,300.
Chewwy,, I was told from an old tractor mechanic that I did not have a double clutch so that is in part how I ended up ordering the wrong Rod as well. Once I split it another friend of a friend came over to tell me if I needed a new clutch and what not as I was going to replace this one if it was even remotely close to being worn. Good news is that everything looks good in there. I am in search of the correct rod now. My manual shows what looks like the right one, but my manual does not come with a part list I have to look it up through Messicks. I am probably going to the local dealer Monday and order it from him. Will take the old broken one as a reference this time. So in closing I have the 9X3 with double clutch. SO I am assuming now I need the part number 86530918. I have looked on a few other parts houses web sites and they show 2 different rod's for my application.
That's a lot of $$, is a double clutch that same as a 2 stage clutch on a L3400?
To many of us you are making a mole hill out of a mountain. To even think of doing splitting a tractor and reassembling it over a weekend without a full blown tractor shop is beyond my imagination.
Since you were an airplane mechanic you probably have the skills. I've one tractor I've needed to redo the brakes on for years, it ain't happening for years. When I do it I expect to take weeks.
Please post your progress in detail, it seem every tractor splitting writeup I've read some steps go undocumented and I'm trying to build up the courage to do mine.
Oh, and get about 6 of the Harbor Freight movers dollies they will come in handy for supporting and moving things on your concrete floor.
I dont like the sound of that, "in closing", is the tractor back together with the right clutch rod already..... isn't there more to this story, if not make one up............ or something.