You need one specialized tool to remove the nut holding the shaft in the final drive .
I don't know if you can source one locally or not, but with it, the nut isn't coming of, let alone properly torquing it during reassembly .
To diasaaemble the drive shaft, you need a tool that works pretty much like a McPherson strut compressor, so unless you can get these tools,or can make them, it's going to be difficult to do it yourself .