I’m not familiar with that part number but a quick google search shows that it’s almost identical to my wartime one.  There really isn’t much that can go wrong inside these.  Drill out the rivets and take it apart.   
I rebuilt mine and it’s as good as new. 
 
You can see my rebuild pictures in the Otter LRC thread. 
 http://www.mapleleafup.net/forums/sh...t=30726&page=4
		 
		
		
		
			
			
				
			
			
				
			
			
			
			
			 
		
		
		
		
		
		
			
				__________________ 
				Jordan Baker 
RHLI Museum, 
Otter LRC 
C15A-Wire3, 1944 
Willys MB, 1942 
10cwt Canadian trailer
			 
		
		
		
		
		
	
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