I like this solution!
I too have had trouble with that finicky keyway on the oil
pump…..
Marc
Wiese
-----Original
Message-----
From: Rotary
motors in aircraft [mailto:flyrotary@lancaironline.net] On Behalf Of Ken Welter
Sent: Friday, January 07, 2005 4:36
PM
To: Rotary motors in
aircraft
Subject: [FlyRotary]
Re: Oil Pump Drive Key was Re: [FlyRotary] Re: Some things to
check
Yes I put a center punch mark on each side of the key to
make it a jam fit and I put locktite on it and hammer it in and then let it
sit for a while before installing it, works great as I have disassembled the
engine and reassembled it several times and the key never
budges.
Wendell,
Ed Anderson had a problem where
the oil pump Wooodruff key wasn't in the keyway. The drive was just
taken by the friction of the tensioned nut. Worked for a
while. Sooner or later, the sprocket will slip on the shoulder of
the pump shaft. The symptom is intermittent loss of oil
pressure, which gets worse as the sprocket wears on the shaft
shoulder.
So, as I said in the post
below, always make sure that the key is actually in the keyway before
fitting to nut & lockwasher. The key itself is very tiny,
and it requires a bit of juggling to get it in the keyway in the
sprocket. I normally gently stake the keyway in the shaft so that the
key can't slip out.
Hope this makes
sense!
Leon