---------------------------------------------------------- Commander-List Digest Archive --- Total Messages Posted Fri 07/04/08: 1 ---------------------------------------------------------- Today's Message Index: ---------------------- 1. 08:11 AM - Re: Re: 560A oil tank draining (Scottmain2003@aol.com) ________________________________ Message 1 _____________________________________ Time: 08:11:37 AM PST US From: Scottmain2003@aol.com Subject: Re: Commander-List: Re: 560A oil tank draining Richard. Thanks for the info. I assumed there was a check valve somewhere. I will look in my lycoming overhaul manual for a description. Based on the replies, I am not the only one with this issue. Scott In a message dated 7/4/2008 2:39:19 A.M. Eastern Daylight Time, RnJThompson@aol.com writes: --> Commander-List message posted by: "Richard & Jacqui Thompson" Scott, The answer to the oil draining into the engine is. The oil pump main pressure relief valve has a spring loaded check valve which stops the oil draining into the sump. This valve could be worn, damaged or have some gunk in it thus allowing the oil to pass by. It is mounted on the back of the pump. Be aware that the reason you always pull the props through before you start is to check that the cylinders have not filled with oil. This happens when the crank case fills with oil and it gets past the rings. Hydraulicing the cylinders is not a good thing, can bend con rods, blow the cylinder head off etc. Generally very expensive. Have your mechanic pull the relief valve and check it out. Remember to reset the pressure after. Cheers Richard -----Original Message----- From: owner-commander-list-server@matronics.com [mailto:owner-commander-list-server@matronics.com] On Behalf Of scottmain Sent: Friday, 4 July 2008 11:28 AM Subject: Commander-List: Re: 560A oil tank draining thanks for the replies. Curiously, only the left engine does this. I was told there is a valve between the tank and the engine on the 560A but I don't see it on the plane or in any of the manuals. Do you think this would add to oil consumption or extra oil lost in the seperator? Again, thanks for the interest. scott Read this topic online here: http://forums.matronics.com/viewtopic.php?p=191181#191181 **************Gas prices getting you down? Search AOL Autos for fuel-efficient used cars. (http://autos.aol.com/used?ncid=aolaut00050000000007) ------------------------------------------------------------------------------------- Other Matronics Email List Services ------------------------------------------------------------------------------------- Post A New Message commander-list@matronics.com UN/SUBSCRIBE http://www.matronics.com/subscription List FAQ http://www.matronics.com/FAQ/Commander-List.htm Web Forum Interface To Lists http://forums.matronics.com Matronics List Wiki http://wiki.matronics.com Full Archive Search Engine http://www.matronics.com/search 7-Day List Browse http://www.matronics.com/browse/commander-list Browse Digests http://www.matronics.com/digest/commander-list Browse Other Lists http://www.matronics.com/browse Live Online Chat! http://www.matronics.com/chat Archive Downloading http://www.matronics.com/archives Photo Share http://www.matronics.com/photoshare Other Email Lists http://www.matronics.com/emaillists Contributions http://www.matronics.com/contribution ------------------------------------------------------------------------------------- These Email List Services are sponsored solely by Matronics and through the generous Contributions of its members.