Posted: 15/10/2012 at 21:17
If old, then do not prune too much.
If you want new growth then prune any time when the trees are dormant. If you want fruiting spures then prune now, though it is getting a bit late, bettter done in September really.
Shorten all new growth back to 3 buds from the point of origin.
Best of all buy a book on pruning Fruit trees, with pictures, much easier to follow than written info.