Once you have that out, taking the lock off and apart is a pretty simple process ... just beware of the centreing spring when you pull the barrel out, it's under tension and pretty small ;)
The next thing I'd like to share, the thing that took me hours of faffing to work out, is how to get that flipping spring back on
First things first ... whatever you do, don't forget to drop the cam into the lock first ;)[frame]

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Next, now this is the 'trick' that makes it fairly easy to get it all together, is to put the spring onto the barrel before you put it into the lock![frame]

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Tamp it down so that it sits level[frame]

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Next, take one leg and line it up with the slot[frame]

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And twist the barrel so that you get both legs down the slot for the locking mechanism[frame]

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Slide it down until it sits into place ... do NOT be tempted to turn it much just yet ;)[frame]

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Fiddle with the spring until it sits straight[frame]

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And then put the pin in[frame]

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Now you should be safe to lubricate and play with the lock to be sure you got it back together right!