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12-31-2015, 11:12 AM
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Join Date: Jan 2005
Location: 57AZ - NW Tucson area
Posts: 10,011
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Quote:
Originally Posted by jetjok
In addition to excellent advice already stated by Vic, I wanted to point out that Lycoming SI 480E addresses checking the suction screen.
As I seem to be not clever enough to post the .pdf link, I have added the germane section. There is more info included in the document.
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To help you out, the entire document...
http://www.lycoming.com/Portals/0/te...Inspection.pdf
__________________
Gil Alexander
EAA Technical Counselor, Airframe Mechanic
Half completed RV-10 QB purchased
RV-6A N61GX - finally flying
Grumman Tiger N12GA - flying
La Cholla Airpark (57AZ) Tucson AZ
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01-01-2016, 08:41 AM
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Join Date: Feb 2006
Posts: 165
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Location
Might sound stupid, but my 540 has not run yet, and I am not at the airport, but where is the pre-filter located????
__________________
Craig Rufi
FLYING NOW AFTER 13+ YEARS. NICE FLYING AIRCRAFT!!
RV-10/Empennage/Wings/QB Fuselage/Wiring/Doors done finally, Cowling done. Stein panel complete, and connecting all those wires :-))Thousand Oaks, Ca. Dues paid for 2019
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01-01-2016, 08:50 AM
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Join Date: Jul 2009
Location: Mojave
Posts: 4,652
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If its a parallel valve 540, then the screen is probably at the rear of the sump, offset to the right. Looks like a drain plug. If it is an angle valve, the screen is likely located on the left side wall of the sump.
__________________
WARNING! Incorrect design and/or fabrication of aircraft and/or components may result in injury or death. Information presented in this post is based on my own experience - Reader has sole responsibility for determining accuracy or suitability for use.
Michael Robinson
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Harmon Rocket II -SDS EFI
RV-8 - SDS CPI
1940 Taylorcraft BL-65
1984 L39C
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01-01-2016, 09:00 AM
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Join Date: Feb 2006
Posts: 165
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Thanks so much.. I will look for it this afternoon
__________________
Craig Rufi
FLYING NOW AFTER 13+ YEARS. NICE FLYING AIRCRAFT!!
RV-10/Empennage/Wings/QB Fuselage/Wiring/Doors done finally, Cowling done. Stein panel complete, and connecting all those wires :-))Thousand Oaks, Ca. Dues paid for 2019
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01-01-2016, 05:09 PM
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Join Date: Jan 2007
Location: Bay Village, OH
Posts: 886
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How well does that engine run?
I have to ask...with those compression numbers, does it use a lot of oil, and does it make expected power? Rick
__________________
Rick
RV-9A N183RC/90432: tip-up, O320H2, Ellison, Dynon D180, CPi2, Sen GA, at KLPR
RV-8 83718, wing kit, tanks done, with a four year plus plan - on hold due to home move
2011-2020 VAF contributor
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01-01-2016, 05:51 PM
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Join Date: Jan 2005
Location: NC25
Posts: 3,508
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Quote:
Originally Posted by vic syracuse
I come across many RV's whose operators forget to check the oil screen on the engine. It should be checked at least once per year during the annual or whenever the internal health of the engine is in question. Here is a picture of one I removed from an RV10 yesterday that should drive the message home. IO-540 with 10:1 pistons and only 600 hours. I don't know when the screen was last checked, but clearly there is lots of blowby. All of the chunks were carbon, the screen was about 50% blocked, with one cylinder at 48/80 and 54/80 and all of the leakage going by the rings.

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From what I remember, the pickup screen in the oil sump should have the dirt on the outside. Is this the filter on the back of the engine? (screen instead of spin-on filter) If the photo is of the pickup screen, what was found in the spin-on or filter on the accessory case?
If this is the screen on the accessory case (instead of spin-on filter) shouldn't the crud be on the outside of the screen? IIRC, the oil flow is from the outside to the inside of the filter.
__________________
Gary A. Sobek
NC25 RV-6 Flying
3,400+ hours
Where is N157GS
Building RV-8 S/N: 80012
To most people, the sky is the limit.
To those who love aviation, the sky is home.
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01-01-2016, 06:15 PM
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Join Date: Jul 2009
Location: Mojave
Posts: 4,652
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This is the suction screen, in the sump. And it flows from inside to out.
__________________
WARNING! Incorrect design and/or fabrication of aircraft and/or components may result in injury or death. Information presented in this post is based on my own experience - Reader has sole responsibility for determining accuracy or suitability for use.
Michael Robinson
______________
Harmon Rocket II -SDS EFI
RV-8 - SDS CPI
1940 Taylorcraft BL-65
1984 L39C
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01-02-2016, 03:23 AM
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Join Date: Jan 2005
Location: England
Posts: 1,087
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Quote:
Originally Posted by Toobuilder
This is the suction screen, in the sump. And it flows from inside to out.
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See page 3 of this link Christen Oil Sump Mods
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01-02-2016, 05:44 AM
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Join Date: Oct 2005
Posts: 1,516
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Crush washer part#
Does anyone have the part number for the
oil screen crush washer? 
__________________
Ernst Freitag
RV-8 finished (sold)
RV-10 Flyer 600 plus hours
Running on E10 mogas
Don't believe everything you know.
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01-02-2016, 06:09 AM
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Super Moderator
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Join Date: May 2005
Location: Locust Grove, GA
Posts: 2,627
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AN900-16
Is the part number for the suction screen gasket referenced in this thread. Yes, the oil flows from the inside to the outside. Here's a picture of the outside of the screen. Yes, there were particles in the filter, albeit much finer and smaller.
It did not impress me as making rated power, either. It is stamped at 317 HP by Lyon. Personally, I doubt that. But I figured the takeoff would be exhilarating if it truly had that much difference in HP. However, having just performed a top overhaul on mine and being impressed with the pickup in take-off acceleration and cruise speed, it actually seemed less than mine.
__________________
 Vic Syracuse
Built RV-4, RV-6, 2-RV-10's, RV-7A, RV-8, Prescott Pusher, Kitfox Model II, Kitfox Speedster, Kitfox 7 Super Sport, Just Superstol, DAR, A&P/IA, EAA Tech Counselor/Flight Advisor, CFII-ASMEL/ASES
Kitplanes "Unairworthy" monthly feature
EAA Sport Aviation "Checkpoints" column
EAA Homebuilt Council Chair/member EAA BOD
Author "Pre-Buy Guide for Amateur-Built Aircraft"
www.Baselegaviation.com
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