Everything you need for three Givi boxes
These fit my 3 E45 cases (circa 2000's) very well.
The kit comes with three identical barrels, six identical keys (far too many!), three circlips, and three black barrel sleeve inserts that prevent the barrel from turning when no key is inserted.
It's unlikely you'll need the barrel sleeves as you can reuse your existing ones if they aren't damaged, though if the metal sleeve has been rotated by force in the plastic body of the case (perhaps during a break-in) then you will have to ensure you make repairs to prevent the sleeve from further movement or security will remain compromised.
Easy to fit: 1, Open the box, leaving the key in the barrel. 2, Note the lock arm position against the barrel as there are four possible ways to mount it and only one will work - take a photo. 3, Remove the circlip holding the lock arm to the barrel, and remove the arm. 4, Slide the barrel out of the metal sleeve with the key in place (the key keeps the barrel pins flush to the barrel). 5, Clean the existing sleeve to remove any filings or swarf from the original barrel, and lube with a light grease. 6, The new barrel will come with a key already inserted, just slide the barrel straight back into the existing sleeve, making sure the key is in the correct orientation to give maximum reach through the sleeve to allow the arm to be fitted. 7, Fit the arm in the correct position (turn the key to ensure proper installation - does the arm go the right way, or will it end up jamming under the handle in the lock position?). Once you're sure it looks right, only then apply the circlip.
If you're using the original sleeves you'll only need a small flat bladed screwdriver to ease the circlips on and off, but if you need to change a sleeve you will likely need a metal file to remove a moulded locking shoulder if your boxes don't have the recess to accommodate this. I think later boxes would incorporate this recess as it helps to prevent the entire barrel and sleeve from rotating under force, however my older boxes don't and I had to remove the shoulder. A file works, but a small angle / bench grinder takes 5 seconds, saves 10 minutes, and justifies why you bought them in the first place (though remember to wear goggles and gloves :-) ).
The circlips can be fiddly, but taking your time and holding the clip with a fingertip during removal will prevent them pining away from you. Installation with a circlip tool is problematic due to them being so small, and the best way to clip them back into place is to push the initial jaws of the clip as far as it can go onto the barrel shaft using finger pressure, then carefully use the tip of the screwdriver to push the clip fully home from the centre of its protruding edge: Make sure you don't slip off the circlip and stab your hand. Do this in a well lit place in case the circlip makes a bid for freedom at any point.
Finally, test the lock to ensure smooth operation.
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