Wilcox Crittenden Type 51

Apr 1, 2017
4
Irwin 37 Aft Cockpit Sparrows Point
Peggy... Rebuilding a Wilcox Crittenden Type 51 and need advice. I cant figure out how to separate/remove the upper inlet control shaft (#24) from the camshaft (#30). The upper shaft has a slot. Does the upper shaft unscrew? Here's the diagram.
 

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