My used 6415 has had a minor (as in not much, steady drips) trans/hydraulic leak since I got it
I think it's from the seal for the MFWD drive shaft at the gear box at the transmission. Drips look like they are from the bottom of this gear box, but it's lowest point so I expect drips there. Also the inside of the left frame rail is covered with oil ( I think the drive shaft flings it there).
My question is can this seal be changed without out draining the 15 gallons of hydraulic fluid? If so, how much will I lose?
It looks like looking at JDparts drawing the seal 23. is in the bearing housing 6, and the bearing housing seals with o-ring 22. So the bearing housing 6, will have to come off to replace the seal. What about round retainer 20, do I need to replace it?
Or is there other known places to check for leaks?