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frank-margie(at)worldnet.
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 Posted: Sat Nov 17, 2007 9:59 am Post subject: Oil Injection Pump |
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REF:
Anybody got an oil injection pump for a 582 sitting on a shelf,
| Quote: | collecting
dust? I need one. Yesterday.
Richard Pike
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Richard,
Would you tell us what happened to your old pump---and how you caught the problem B4 it seized your engine?
Thanks,
Frank Clyma
Orange Park, FL
503 DCDI/oil injected owner
do not archive
[quote][b]
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Richard Pike
Joined: 09 Jan 2006
Posts: 1671
Location: Blountville, Tennessee
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| Posted: Sat Nov 17, 2007 11:33 am Post subject: Oil Injection Pump |
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It was the 582 powered FSII next door to me, that I do the maintenance
on, (And am just getting ready to go out and finish the engine
re-installation) the owner was about 20 miles away, had done a touch &
go at a local grass strip and was headed home when the engine quit.
Landed w/o incident, engine would not start or run. A few minutes later
it started, ran fine, and he called me on his cell phone, wondering if
he could fly it home safely. I told him it had likely seized, and would
probably seize again.
But if he was determined to fly it home, take off (it was a big open
field with lots of options), circle and climb until he was at least 2500
agl, and then head home, expecting it to fail. He did, and it worked.
Pulled the engine down and could find nothing wrong with it. Sent it to
Solo Aviation, and had it majored. In the process of putting it back on
the airplane and hooking all the systems back up, discovered grit in the
oil injection pump filter, on the downstream side (pump side) of the
filter screen.
Think about this for a while. I have thought about it for a month. This
is the filter that goes in the oil line from the reservoir to the pump,
we took it off, and there was sand and grit on the pump side of the
screen. There was nothing in the oil injection tank or the line to the
filter, or in the upstream side of the filter. Where did the grit come
from? No clue. The filter had sat for a while, unless a mud dauber had
stuffed it with mud while it was tucked away in a box...??? DurnifIknow.
This solved a problem that this engine has had for a while, the PTO end
carb float bowl started filling up with oil any time the airplane sat
for any length of time. Replaced the ball check valves on the outside of
the injection pump and that cured it for a week or so, but then it
started again. If you let the airplane sit for 2 weeks, preflight
entailed removing the PTO end float bowl and dumping out all the oil
that had accumulated. Or else start it on the mag end cylinder and run
it until it sucked all the oil out and finally started running on two,
fogging the neighborhood in the process. The grit had been getting into
the little ball check valve and holding it open, and the oil must have
been flowing through the pump, into the manifold, around the needle, and
into the float bowl.
Yeah, I know it sounds screwy, better ideas invited. Kind of like the
mud on the wrong side of the oil filter. Better ideas invited...
Removed the oil pump cover, the upper end had grit in it, you could see
it through the oil intake pipe and also through where the ball check
valves are attached. Knowing that the pump is lubricated via the oil
injection oil also being in the pump, pulled the bottom cover off the
pump and found that all the little roller bearings were running in a
black mess of oil and metal, the grit was gradually eating away the guts
of the pump. Not sure how much longer it would have lasted, but it
certainly was not airworthy.
Nothing damaged but the man's wallet, but it certainly is a complicated
and involved scenario. Now my break's over, off to the hangar to finish
putting it all back together.
Richard Pike
MKIII N420P (420ldPoops)
FSII N582EF
Frank Clyma wrote:
| Quote: | _REF:_
Anybody got an oil injection pump for a 582 sitting on a shelf,
> collecting
> dust? I need one. Yesterday.
>
> Richard Pike
----------------------------------
Richard,
Would you tell us what happened to your old pump---and how you
caught the problem B4 it seized your engine?
Thanks,
Frank Clyma
Orange Park, FL
503 DCDI/oil injected owner
*
*
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_________________
Richard Pike
Kolb MKIII N420P (420ldPoops)
Kingsport, TN 3TN0
Forgiving is tough, being forgiven is wonderful, and God's grace really is amazing. |
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mmatuszczak(at)cfl.rr.com
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| Posted: Sun Nov 18, 2007 6:19 pm Post subject: Oil Injection Pump |
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Got one for a 503.
mem
do not archive
[quote] ---
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Richard Pike
Joined: 09 Jan 2006
Posts: 1671
Location: Blountville, Tennessee
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| Posted: Sun Nov 18, 2007 6:26 pm Post subject: Oil Injection Pump |
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Steven Greene gave me one already, thanks.
rp
Mike Matuszczak wrote:
[quote] Got one for a 503.
mem
do not archive
---
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_________________
Richard Pike
Kolb MKIII N420P (420ldPoops)
Kingsport, TN 3TN0
Forgiving is tough, being forgiven is wonderful, and God's grace really is amazing. |
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frank-margie(at)worldnet.
Guest
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| Posted: Mon Nov 19, 2007 5:25 pm Post subject: Oil Injection Pump |
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REF:
Think about this for a while. I have thought about it for a month. This
is the filter that goes in the oil line from the reservoir to the pump,
we took it off, and there was sand and grit on the pump side of the
screen. There was nothing in the oil injection tank or the line to the
filter, or in the upstream side of the filter. Where did the grit come
from? No clue. The filter had sat for a while, unless a mud dauber had
stuffed it with mud while it was tucked away in a box...??? DurnifIknow.
--------------------------------------------------------
Richard,
Appreciate the info. DurnifIknow either, that's a really strange one. I haven't heard anything about injection pump problems, but I've kinda wondered about the possibility------.
Anyone else heard of any injection pump problems?
Frankl Clyma
do not archive
[quote][b]
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