Mahindra 5570 fwd problem

My nephew's fil ask me to look at the front hub of the tractor,the drive hub itself has a slight in and out movement about an 1/16 of an inch.No up or down or side to side slop.I got a parts breakdown and it look like part 36 is the nut that holds it on.The question I have how had is it to get part 39 off and put back on. TIA

Unless I'm missing something, take out the circle of bolts, #40, and the cover should come right off. They only show one bolt but it looks like there is 16 to 20 bolts
around the perimeter of #39

39 is just the cover to the planetary drive on the hub. If there is a nut it looks more like 36 is it. I would guess it has more like a snap ring holding and the 1/16 is maybe normal. If you pull that cover there will be about a cup to a quart of oil that will run out with it off. There should also be a level adn drain plug in the hub. Might be the same one just turn the hub to fill and drain. Just to verify though is the hub moving or the axle shaft in the knuckle moving. The axle shaft might move that much in the opening for the Universal Joint.

First here is my disclaimer, I do not know if I have ever been within 50 foot of a Mahindra 5570 and I have for certain
never worked on a front axle of one. I have overhauled automotive automatic transmissions that utilize planetary gear
sets so let me tell you what I see per the diagram which is poor at best in my opinion. There is a box nearly in the center
of the diagram with a set of needle rollers in it and a 28 in the upper right corner. Below the lower left corner of that box is
a gear that looks to be a planet gear of a planetary gear set. Directly below that is another gear that looks to be a sun
gear for a planetary gear set, it is placed on the centerline of the whole assembly drawing. Parts 28-31 and 48 assemble
inside the unnumbered ..planet gear.. but that gear has no centerline drawn to show you what it assembles to. Looking at
part 39 the side that is drawn away from view from my experience looks to be built as a carrier of the planet gear set of a
planetary gear assembly. This is where the planet gears mentioned previously likely assemble in, likely three or four of
them. Part 37 looks to be a planetary ring gear that installs inside the wheel hub. So after all that.. in other words do not
be surprised if you pull out number 39 as you proposed and it is a planetary carrier. I would not discourage you from
doing it because of this, the carrier set should stay contained as one piece and will just need a little more finesse to align
the gears up for reassembling. There is a lot of assumption here due to the poor drawing, but it seems it could be correct
per other hub assemblies of other tractor brands I have seen taken apart.