Newage gearbox

[Underdog]

Hi,
I have a Newage PRM 160 gearbox that is weeping oil from the output shaft end. I am presuming this is a seal failing at that shaft/flange end and it needs replacing.
Has anyone done this, and if so can they give me some tips of how to attack the issue please?

[Underdog]

I have now successfully 'attacked' and overcome the issue - despite the manual that the kind people at Newage forwarded to me!
Some things are not as they are written!
If anyone has this problem (wanting to change the rear seal) I am happy to step them through the process.