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Lewis Gun Pan Question


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I love my Jap Type 92 Aircraft Lewis. However, I had some odd jams on a particular pan. I emptied the pan and cycled through and I noticed on one spot, it discontinues to rotate the pan. After inspection, I cannot see any reason why it should. Am I missing anything in my observation?

Thanks, guys.

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There is a 97.835% chance the pan is either out of round or the rim is bent.

 

First, set the pan on a flat surface (table or kitchen counter top) and see if the bottom edge is flat and touches all the way around. Also, the edge (side) should be 90° from the surface

 

Put the empty pan on your Lewis with the bolt forward. Rotate the pan a click at a time and note the gap between the pan edge at the rear and the front of the top cover. It should be about the same gap all the way around.

 

I've rebuilt quite a few pans, but I haven't worked on a Japanese one yet.

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As noted above - you can test for bent. there is actually a tool I have that is used to check for warps and bends. looks like a mag loading tool with a rod that extends over the rim to look for bends or warps. the Japanese drums are essentially the same as British. They are interchangeable on my guns-

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