cheers thanks for that grumpy
yeah forgot to mention its a double v belt pulley from a rover colt 5hp. The bottom V has one side a lot bigger in diameter to "hold" the belt when disengaged. Its got two grub screws and i found an IPL for the engine and can see a key in there as you suggested.
Ive ordered a new seal should be here in a week.
I'll let you know how i get on
thanks again
matt
