I took the easy option & got it done by a mobile mechanic for £70.
I know at least one person on here has done it & I think they posted the instructions.Have a trawl through past post in the Tech section and see what you come up with.
There`s also a good chance this will be read by one of them & you`ll get a reply from them too.
you need to read this thread about 3rd item down is where my alt packed in and details of the special tool. Dont even think about trying to replace the alt without it or something similar. You can get the alt off but noway will you get it on. Any questions just ask as i`ve had 2 go so am getting quite good at replacing them
In our case it was working on part of the same journey home and not on on the rest of it perhaps no more than ¾ hour later. All I got out of the faults was that it wasn't charging
If you think where the alternator is and how it is constructed I think you'd probably have to put a high pressure jet directly on to it. The radiator fins themselves protect a lot of the engine from water ingress anyway
My alternator went at 28,000 miles and 4 months out of warranty, have contacted For customer service looking for help with cost, full ford history, 2006 2.0 TDCI Ghia, they called me after I wrote looking for a copy of the service record, no other probs, mpg incidentally depends on weight of right foot, everything from 36mpg to 54mpg, 38 ave. for town driving.