How do I replace the pinion in a remote gearbox that’s attached to an engine? From the front, I can get a socket on the big pinion retaining nut, and with the diff case removed I can see the pinion from the side, but I don’t have a way to jam the main shaft solidly enough to remove the nut. Anyone changed a pinion like this? Any advice?
These are straight-cut gears, but I’ll be replacing the pinion with a helical-cut version.