Knapp37 wrote:Thanks guys! Never gone any further to the engine bay so suppose it's something new to learn. Is there anything I need to look out for when I'm taking the belt off? I'm aware that I'll need a special spanner for the fan and that the bolts holding it on are threaded the other way.
Is it easy get the belt off and on again?
And are there any other special tools I'll need?
I'd leave the belts on until you have undone the fan nut. It is a left hand thread so loosen it as if you were tightening a normal nut! If you've not done one before I'd advise getting the proper spanner (can't remember what size it is) but I've not got one. I get a long thin chisel and put this on the right hand edge of one of the flats on the nut and give it a good twat with a hammer. After two or three taps they usually spin off OK. Did this recently on my Laser when I fitted a new pump. Works on most cars with a viscous coupling!
As for fitting the new pump be careful undoing the bolts - put a socket on each and give it a tap with a hammer before trying to undo it. As with the thermostat housing it is worth cleaning the bolts and threads and a little smear of copperslip on the threads just to aid future removal.
Finally make sure the mating face on the block where the pump sits is as clean as possible. I recommend smearing a very thin bit of blue Hylomar on both sides of the gasket - it will seal any minor pits in the mounting face and help stop future leaks and Hylomar doesn't set like silicon gasket sealer then bits fall off and get in the cooling system.
One last thing is that I've read on other posts and forums that there are two different types of water pump - the difference being in the impellor. Make sure that your new one is exactly the same as the one coming off. I've never seen what people mean and have only done water pumps on 2.8i Granadas and have never had trouble, but perhaps someone else can enlighten us what the difference is and how to spot it.