Reply To: 1945 Sea King 5 hp, 54GG-9011 Parts Manual?

[frankr]

See 28, 29, and 30 in the first drawing I posted.  #30 packing is a rubber washer.  The spring keeps axial pressure on the parts and at the same time “mushes” the rubber to make it “hug” the shaft.  Goofy setup that almost works.

 

Gear lash is a balancing act between the natural forces trying to move the gears apart and the forward force of the prop shaft from prop thrust.