Today's Message Index:
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1. 08:27 PM - Oil Filters (DEAN PSIROPOULOS)
2. 11:04 PM - Re: Oil Filters (dave schultz)
Message 1
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Hello Listers:
My RV-6A has been flying for a couple years now and since I have the
repairman's certificate I've been doing the annuals and maintenance. My
question is on cutting open the oil filter after an oil change. Since I've
never owned an airplane before much less maintained one this exercise has me
wondering:
After the first few oil changes on a new/overhauled engine, do you keep
cutting open the filters and inspecting the element?
Or is inspecting the element not as important as the first hours after break
in?
Those of you that do cut open every oil filter at every oil change, do you
ever see fine particles in the filter element?
If yes, how often do see these particles?
What color are the particles?
How large would the particles have to be to be of concern?
How many folks do oil analysis in addition to cutting open the filter?
If the oil analysis says no problem but there are a small amount of fine
particles in the filter do you continue to fly?
If you have fine particles in the filter would you take them to your local
mechanic and have him/her look them over? Or???
I'm curious, I've done lots of work on cars but never cut open the filters
before so I don't know if fine particles would be present at every change.
I don't want to be paranoid about this but if a problem can be caught
earlier by cutting open the filter EVERY TIME then I want to be sure to
continue doing that. Thanks.
Dean Psiropoulos
Flying fun for 2+ years now
Message 2
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for a continental e-225 in my '52 c 35 bonanza, prevented a catastrophic
engine failure by
sending off oil sample and cutting open the filter with each oil change.
the scavenge pump in the accessory case began to fail - saw grey smudge
and very small particles on the magnet. waited for analysis results to
come back (week) before flying,
and sure enuff, a jump in iron (impellor) and aluminum (pump casing) and
copper (shaft bushing/bearing) and ....
since it was the scavenge pump side of the oil pump, only the slightest
decrease
over time in oil pressure (two pumps in accessory case), so not really
observable by instrument.
so instead of losing an engine or numerous
parts therein (like the crank!), I only had to replace the oil pumps for
about $2500;
all other parts salvageable / overhaul - able.
for the little time and money involved (every 33 hrs), it's not even a
little bit worth not doing the
whole nine yards, let alone the piece of mind.
if sample taken correctly, oil analysis very sensitive to anything
compared to visual inspect.
for example, you'll be able to see if your air filter is failing (step
up in silicon from the sand
in the air).
r/s
--------------------------------------------------
From: "DEAN PSIROPOULOS" <dean.psiropoulos@verizon.net>
Sent: Monday, January 17, 2011 8:20 PM
Subject: Engines-List: Oil Filters
<dean.psiropoulos@verizon.net>
>
> Hello Listers:
>
> My RV-6A has been flying for a couple years now and since I have the
> repairman's certificate I've been doing the annuals and maintenance.
My
> question is on cutting open the oil filter after an oil change. Since
I've
> never owned an airplane before much less maintained one this exercise
has me
> wondering:
>
> After the first few oil changes on a new/overhauled engine, do you
keep
> cutting open the filters and inspecting the element?
>
> Or is inspecting the element not as important as the first hours after
break
> in?
>
> Those of you that do cut open every oil filter at every oil change, do
you
> ever see fine particles in the filter element?
>
> If yes, how often do see these particles?
>
> What color are the particles?
>
> How large would the particles have to be to be of concern?
>
> How many folks do oil analysis in addition to cutting open the filter?
>
> If the oil analysis says no problem but there are a small amount of
fine
> particles in the filter do you continue to fly?
>
> If you have fine particles in the filter would you take them to your
local
> mechanic and have him/her look them over? Or???
>
> I'm curious, I've done lots of work on cars but never cut open the
filters
> before so I don't know if fine particles would be present at every
change.
> I don't want to be paranoid about this but if a problem can be caught
> earlier by cutting open the filter EVERY TIME then I want to be sure
to
> continue doing that. Thanks.
>
> Dean Psiropoulos
> Flying fun for 2+ years now
>
>
>
>
>
>
>
>
>
>
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