crank/pump locking pins !

Hi , i'm hoping someone can help me ! i'v used the search function ! but cannot find the answer , i am looking for the dia of the crank/fip locking pins for the L series diesel so i can get the belts changed ! i have found the locking holes but just need this last bit of info so i can get it done !!
Regards
Alan

get allan keys and go through them when you find the ones that fit you will know the diamiter of pins if your like me use the allan keys and save some dosh mate

a local steel stockest has all sizes of hardened bar off cuts so its only going to cost a couple of quid , and my allen keys are short socket set size !!
Alan

anyone !!! want to get cracking before the bad weather sets in as i'v only got a driveway !!!