If I would have known that's the picture you were going to get Brett, I could have saved you the trouble--I have a 2.5 viscous water pump sitting on a shelf, with all the other parts of my disassembled engine.
Well, at least you found that loose bolt.
Out of curiosity, how did you enlarge the center hole on the fan so it would fit around the viscous fan threads on the pump? In other words, how did you keep it perfectly centered and cut it out?
Incidentally Aaron, I googled 2.5 diesel rover and sherpa water pump images and NONE of them look like your fan attach. Weird.
--Mark
1973 SIII 109 RHD 2.5NA Diesel
0-54mph in just under 11.5 minutes
(9.7 minutes now that she's a 3-door).