Well bone yard came through, brake disc in perfect shape. Hope that one lasts another 20 years. Unfortunately I left the old disc at the bone yard. That slides back and forth on a shaft about .75" across with about 40 splines on it. The splines on the shaft out of the transmission were perfect, the splines inside the disc were non existant. The slide motion comes into play as the brake pads wear, so not much motion, but it has to be able to move exactly like a brake caliper on a car or truck moves as the pads wear. Worst part of the job was getting it back together, not much room between tranny and frame. the piece with the actuator has a steel puck shaped like the brake pad that goes in first, then the pad goes in, then you have to get it lined up with the bolt holes and get a bolt started, screwed in almost tight to keep the pad from falling out. About 5 minutes into the job I had already used 65% of the words in the four letter word dictionary. By the time I was done made it all the way through and about 50% through it on the second pass. Probably would not have been a bad job for me 30 or 40 years ago but now is a different story.
Right wrist was about FUBAR during an assault a couple years back so it don't work right. That was fun, healed wrong, so after 6 months I had to pay to get it broke again, this time they added hardware to keep everything in place more or less.
Left hand is still not up to par after a stroke a couple years back, sometimes it does what I ask it to, sometimes it does exactly what I don't want it to do.
Important thing, I got it together and it works great.
About like I installed a whole house Genrac generator for a customer 8 years ago. I have been servicing it for them every time it needs service. One of the spark plugs is against the back of the cabinet, you have to use your left hand to take plug out and put new one in. Got the old one out fine. Worked at getting the new plug in for 35 minutes and could not get it to start in the threads. Finally called my son. He had it in in 35 seconds. All I could say was you will be old one day and I hope you remember the hard time you gave me when someone has to bail you out.
Here is a video of a guy building a drag mower using the tranny I have Roper 633 is what he is calling it.
His donor mower was a GT 6000 Craftsman.
At 6:54 there is a kinda good shot of the disc brake setup from a top view.
With the fenders and all on mine, no camera shots of the job.