it depends on how much luck you have with it
it's been known to come out in seconds, but it's also been known to take over 2 hours because it's a right little bastid

as long as you clean out ALL the cv grease you'll be able to spot it easily enough, just be aware that some circlip pliers are a bit too big to fit into the slot, you may have to get invetive with a pair of small screwdrivers in that case