Thanks as always you are kind and qualified. Instead I am confused and undecided. I don't have a workshop manual and therefore I'm not sure where the slaw motor is. On the floor under the levers?
Remember the pinion that you greased by hand?
looked something like this....
Well the slew gearbox is on to top of this pinion. There will be 3 or possibly 4 hydraulic hoses attached to it. Will be under the floor somewhere. If you can recall its position underneath then you can get a better idea of its location under the floor. It won’t be the center of the machine, as that is where the rotary coupling will sit, this will also have several hoses going to it, 7 at least, so don’t confuse the two.
take some pictures if you do find it, and maybe we can help you locate the filler and drain plugs?
it will likely need 85/90 gear oil.