You need a tool to hold the flange while loosening and torquing the flange. I can't remember the torque right now, I'm guessing 100-150nm. The bolts that hold the d-shaft to the flange have to be replaced (and torqued). I recommend also replacing the flange itself, it's not that expensive. There is a special tool to drive the flange seal into the case. Also the typical big-ass socket required to remove the flange nut, but it has to be thin-walled enough to fit into the recess to engage onto the nut, that may pose a problem as most sockets of that dimension are too thick walled(I want to guess at 41mm? I can check at work and get torque specs too, at least I hope I can, our WIS PC is down).
Gilly
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