Originally Posted by Mattacraft
Simples! Keeping it in neutral? I assume it doesn't really matter as long as it all comes out and goes back as it was. Water pump housing and impeller straight forward enough?
Yep, keep it in neutral. Sometimes if the cable adjustment is out a little it can jump into gear when you drop the box, its easy enough to put it back in to neutral with a pair of mole grips.
If you manage to drop the unit you will manage the pump, child's play really.
Lightly grease the drive shaft splines before refitting.