Today's Message Index:
----------------------
1. 07:53 AM - obstruction to rotation (Joe Howse)
2. 08:37 AM - BREAKING REDSTAR NEWS! (Rico Jaeger)
3. 11:15 AM - Re: obstruction to rotation (Bitterlich, Mark G CIV Det Cherry Point, MALS-14 64E)
4. 12:53 PM - Re: obstruction to rotation (James Goolsby)
Message 1
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| Subject: | obstruction to rotation |
Thanks for all the advice, problem did turn out to be hydraulic lock, I
had never felt one as severe before, thus my concern for something
mechanical.
Caution prevailed, removed spark plug.
Carl Hayes (M14P_Inc.) suggested that perhaps the the engine had stopped
with the crank pin and master rod bearing directly over #5 cylinder
allow ing oil to drip into the cylinder and piston, oil could then
migrate through the rings and into the combustion chamber, with that
piston on the compression stroke ( valves closed ) oil was trapped.
In retrospect we could have turned the engine backwards to open the
intake valve draining the oil through our intake manifold drain system.
Basic problem was oil reverse flow valve failed
Have now sent our oil pump to M14-P-INC for their modification, to a
ball and spring valve and seat to replace the original poppet type.
Joe
Message 2
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| Subject: | BREAKING REDSTAR NEWS! |
IT'S JILL'S BIRTHDAY, YAKKERS!! Please be sure to thank her for ALL she (so
positively) does for us all and wish her a HAPPY 29th! :) M-14P has been
invaluable when in regard to furthering progress / maintaining my aircraft!
If you're received kind service from Jill (And I KNOW you have!) take 30
seconds out of your day to appreciate someone so deserving! HAPPY B-DAY,
JILL!
(Don't hurt me)
Rico
Message 3
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| Subject: | obstruction to rotation |
Caution on turning engine over backwards, especially with YAK-50's.
Due to the "cant" of the engine, the oil runs out into the intake tubes.
If you have an intake drain kit installed, and give it enough time, that
oil will eventually come out via the intake drains.
If you do not wait long enough, the oil will be "gulped" back into the
cylinder and you stand a chance of bending a rod THAT way.
Mark Bitterlich
-----Original Message-----
From: owner-yak-list-server@matronics.com
[mailto:owner-yak-list-server@matronics.com] On Behalf Of Joe Howse
Sent: Friday, August 24, 2012 10:51 AM
Subject: Yak-List: obstruction to rotation
Thanks for all the advice, problem did turn out to be hydraulic lock, I
had never felt one as severe before, thus my concern for something
mechanical.
Caution prevailed, removed spark plug.
Carl Hayes (M14P_Inc.) suggested that perhaps the the engine had stopped
with the crank pin and master rod bearing directly over #5 cylinder
allow ing oil to drip into the cylinder and piston, oil could then
migrate through the rings and into the combustion chamber, with that
piston on the compression stroke ( valves closed ) oil was trapped.
In retrospect we could have turned the engine backwards to open the
intake valve draining the oil through our intake manifold drain system.
Basic problem was oil reverse flow valve failed
Have now sent our oil pump to M14-P-INC for their modification, to a
ball and spring valve and seat to replace the original poppet type.
Joe
Message 4
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| Subject: | Re: obstruction to rotation |
Great to hear it was as simple as that.
Pappy
Sent from my iPad from some where on The 3rd rock from the Sun.
On Aug 24, 2012, at 10:51 AM, "Joe Howse" <joeh@shaw.ca> wrote:
> Thanks for all the advice, problem did turn out to be hydraulic lock, I ha
d never felt one as severe before, thus my concern for something mechanical
.
> Caution prevailed, removed spark plug.
> Carl Hayes (M14P_Inc.) suggested that perhaps the the engine had stopped w
ith the crank pin and master rod bearing directly over #5 cylinder allow ing
oil to drip into the cylinder and piston, oil could then migrate through th
e rings and into the combustion chamber, with that piston on the compression
stroke ( valves closed ) oil was trapped.
> In retrospect we could have turned the engine backwards to open the intake
valve draining the oil through our intake manifold drain system.
> Basic problem was oil reverse flow valve failed
> Have now sent our oil pump to M14-P-INC for their modification, to a ball a
nd spring valve and seat to replace the original poppet type.
>
> Joe
>
>
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