good to see the tracks werent stuck "that bad"..... coulda been a whole lot more work to get them moving. Having it "mobile" will make getting it into the shop a hell of a lot easier
Lucas makes a red spray grease in a can.................I've been amazed how well in penetrates,..................maybe something like that on the tracks might help,..
I think they have *"clutches"* if you pull off the rear sprockets which can become stuck by being permanently engaged in some way why will go backwards not forwards as usually only one gear for reverse as opposed to more than one for forward. Definitely agree with the diesel fuel and grease gun comment therefore. Very robust machine once fully running can be used for just about anything and in any weather as well.
I helped a guy do the same and he got a barrel of water and a gas engine pump and soaked them down and kept dragging it ,the high volume water flooded the links and broke them loose quite well ,it didn't take to long using high volumes of water and pulling it the same time,,the rust powder just washed out of the pivot joints,baby steps will pay off bring it back
I tried to free up a 5ft, 3-point disc by dragging it on the road once when i was younger. It turns out hot asphalt is no match for steel blades and an 8Ns horsepower... like a hot spoon through ice-cream.
After using water ,he never had to do it again after getting them free,,there was water rusted stained rock on his driveway for the longest time ,I see you have a extra pile of rock to cover all that's needed ,he didn't