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Dana, the Dowel referred to is to replace the drive shaft of the oil
metering pump. I simply left mine installed. Its true its gear is turning
while the engine is running - but I've had no problem with it. Why not just
pull it - well there is an oil boss which feeds oil to the boss in which the
shaft rotates. With out the shaft you might get a lot of oil flow in that
area. I don't believe it would hurt anything but does represent oil that is
really serving no purpose flowing there. If I did not have the shaft there
I would probably put a dowel - however make certain it is captured such that
it can not slip out of the oil pump drive shaft hole else a dowel amongst
your oil drive chain would probably not be good {:>).
That is my understanding on the topic.
Ed
Ed Anderson
RV-6A N494BW Rotary Powered
Matthews, NC
----- Original Message ----- From: "Dana Overall" <bo124rs@hotmail.com>
To: "Rotary motors in aircraft" <flyrotary@lancaironline.net>
Sent: Tuesday, August 10, 2004 2:10 PM
Subject: [FlyRotary] Rebuild begins
In reading Tracy's book on rotary rebuild he mentions dropping a 3/16"
dowel
into the front cover oil passage leading to the pump drive after removing
the oil injection pump drive. I talked with Bruce who stated this is not
nessessary. Last I talked with Tracy this morning, he was ankle deep in
coolant so I'm not bothering him anymore today:-). Question, what is the
reasoning behind this dowel and is it required?
Dana Overall
Richmond, KY i39
RV-7 slider, Imron black, "Black Magic"
Finish kit
13B Rotary. Hangar flying my Dynon.
http://rvflying.tripod.com/aero1.jpg
http://rvflying.tripod.com/aero3.jpg
http://rvflying.tripod.com/blackrudder.jpg
do not archive
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