Conquest Water pump

[Phillmore]

I've just removed the water pump from a strict Conquest (fiddly or what?!). I have been told to just remove the fan and pulley for an exchange unit and the manual and parts book make this sound feasible. However my fan and pulley seem to be secured by the centre nut and washer as well as the four bolts, which I wasn't expecting (and this appears to be the same on my other two Conquests). The parts book seems to show a domed centre on the fan which I assume is to allow it too fit over the nut (my fan obviously doesn't have this. The nut is castellated and pinned which suggests that it is tensioning the bearings? Do I return this nut on the shaft when sending off for the exchange unit and will I get one back on the exchange unit? I hope all this makes more sense to someone else than it does to me!

[terryfrombury]

Hate to ask the obvious question, Andy, but why not ask whoever is doing the exchange unit?
Terry

[Phillmore]

Yes Terry that is the obvious answer. Just thought I'd check things out here to see if anyone had done the job recently. Just seemed a bit strange that all three Conquests were different to the manual and parts book?