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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