noisy grinding crank

[giles]

Hi Folks,
How easy is it to fix a noisy grinding crank?  When I pedal one of my C5's it doesn't feel smooth and makes a grinding noise.  The other one is smooth and silent.
I am guessing the bottom bracket needs taking apart and fitting new bearings or such like, what do you think?  By the way I was told it has just had a new chain.  I was also told it had been given a full service, wouldn't this include renewing the bearings on a grinding crank?  Or at least trying to fix/grease it?
Cheers, Giles

[Karl]

Here you go;

http://c5alive.co.uk/forum/index.php?topic=239.0

..fortunately this can be done with the bodyshell in situ, saves a lot of work 

[giles]

Thanks very much, I'll ask my biking mates if they have the bootom braket tool.
Cheers, Giles