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06-09-2008, 06:15 PM
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Join Date: Jan 2005
Posts: 210
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Urk
I just installed a Safe-Air quick oil drain on my RV-4 and was looking forward to relatively painless oil changes. Now I see that I'll need to add the oil screen check which is a much bigger hassle than the drain plug R&R ever was.
Sigh.
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Kevin Cameron - Fresno, CA - E79
N493DB RV4 Flying IO-360-A1B, 10:1, Straight-Bore cylinders, Gapless Piston Rings, Hartzell CS Prop,
AFS3400-EE, TruTrac DFII VS, Aera 660, GTX 335, GDL 52R,
XM Radio, SL30, SL40, PMA9000EX, MicroTrac 300 APRS
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06-26-2008, 12:45 PM
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Join Date: Feb 2005
Posts: 426
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New Screen was Bent up
Last week end I removed my oil screen for cleaning for the first time since new on a Lycoming 0-360. The screen was bent up at the far end as if the plug was tightened without the screen being properly seated into position. So, check the oil screen you may be surprised what you find and be careful when you put it back in.
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John Adams
Seattle
RV7 600+hrs
Paid 12/2014
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12-29-2008, 11:10 PM
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Join Date: Jan 2005
Location: MN
Posts: 2,269
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Screen Clean
I know this is an old thread, but at the oil change tonight, I removed and checked the oil sump screen on my O-320. Removing, checking and reinstalling was not too hard, but replacing the safety wire was a royal pain. I was lucky Mike Behnke stopped by to drop off some books and stayed to help.
Here are some pics that might help someone:
Access on the trigear is a bit limited
Here are the parts removed - nothing in the screen- giddy up!
Close up of the plug and the new gasket
Good luck with the safety wire.......
All in all, it took 3 hrs to change the oil, remove the screen, test run for leaks, and button her all back up. 1.5 hrs was that dang safety wire.
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Cheers,
Pete
Amateur Plane - RV-9A N789PH - 2350+ Hrs
Amateur Radio - KD0CVN
Doggies Delivered - 25+
St. Paul, MN
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12-30-2008, 08:15 AM
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Join Date: Aug 2005
Location: McKinney, TX
Posts: 52
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After checking the screen, replacing the crush washer and reinstalling the screen it seems I am always fighting a seapy oil leak. I suspect I never get the torque set correctly on the first try.
Does anyone know what the correct in lb torque value should be?
Someone earlier mentioned 135 degrees past full contact - using that method, how do you determine "full contact" - ie the point at which you start measuring the 135 degrees?
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Dick Flunker
RV-6A, 2000 hours
North Texas
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12-30-2008, 08:59 AM
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moderator
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Join Date: Dec 2004
Location: Mill Creek, WA
Posts: 617
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Pete, how many hours had it been, and did you find anything on the screen?
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Randy Lervold
RV-12iS, empennage/tailcone complete, wings currently, fuse in box
RV-3B, first flight 2007 - sold
RV-8, first flight 2001 - sold
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12-30-2008, 09:05 AM
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Join Date: Jan 2005
Location: MN
Posts: 2,269
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Clean.......
Hi Randy,
400 hobbs hours, and it was clean as a whistle.
There is no way to get a torque wrench in there without major disassembly. The gasket is crushed, the plug is tight, safety wired, and my fingers are crossed, hoping for no leaks.........
__________________
Cheers,
Pete
Amateur Plane - RV-9A N789PH - 2350+ Hrs
Amateur Radio - KD0CVN
Doggies Delivered - 25+
St. Paul, MN
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12-30-2008, 09:38 AM
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Join Date: Apr 2007
Location: Las Vegas, NV
Posts: 118
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Pete,
Thanks for posting the pictures. A picture is worth a thousand words, and since I haven't yet done my first oil change, it really helps knowing what to expect. 9.5 hours on N558RV, and so far, so good.
Mark
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12-30-2008, 08:35 PM
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Join Date: Jun 2008
Location: englewood,florida
Posts: 16
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Which way is the crush washer faced when reinstalling? or does it matter.
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12-30-2008, 09:40 PM
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Join Date: Jan 2005
Location: MN
Posts: 2,269
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Washer
Hi Dave,
The washer appeared to have the same shape on both sides. It has a round, not flat cross section.
__________________
Cheers,
Pete
Amateur Plane - RV-9A N789PH - 2350+ Hrs
Amateur Radio - KD0CVN
Doggies Delivered - 25+
St. Paul, MN
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12-30-2008, 10:12 PM
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Join Date: Mar 2007
Location: Sonoma County
Posts: 3,821
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IS DOES MATTER........
Quote:
Originally Posted by davercook
Which way is the crush washer faced when reinstalling? or does it matter.
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If I recall right, the seam faces away from the motor case (oil pan). Screw it in hand tight and then place a sharpie mark at 12:00 then with your open end wrench, tighten the cap till the mark is at the 4:30 position. Wire up, and your done........................
YOU MUST USE A NEW WASHER EACH TIME................. 
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