---------------------------------------------------------- Yak-List Digest Archive --- Total Messages Posted Wed 02/18/15: 3 ---------------------------------------------------------- Today's Message Index: ---------------------- 1. 04:38 AM - M14P Overhaul TBO (ZUDSJ) 2. 06:25 AM - Re: M14P Overhaul TBO (Richard Goode) 3. 11:45 AM - Re: M14P Overhaul TBO (Bitterlich, Mark G CIV NAVAIR, WD) ________________________________ Message 1 _____________________________________ Time: 04:38:55 AM PST US Subject: Yak-List: M14P Overhaul TBO From: "ZUDSJ" Hi I am new to this forum and a new Yak 52 owner in South Africa. I wanted to find out what the TBO is for the M14P in other countries as I believe that with the kind of flying we do (post military) and the kind of maintenance we do surely these engines can take more than 500 hours before complete overhaul? I am aware that this topic has probably been debated to death but really keen on hearing from other Yak owners in other countries. Many thanks Jason-South Africa Read this topic online here: http://forums.matronics.com/viewtopic.php?p=438473#438473 ________________________________ Message 2 _____________________________________ Time: 06:25:26 AM PST US From: "Richard Goode" Subject: RE: Yak-List: M14P Overhaul TBO The official factory TBO is 750 hours before first overhaul, but 500 hours for the M 14 PF. Then the TBO is 500 hours. To the best of my knowledge this must be observed in all European countries, although some will give a 10% extension "on condition". In other countries with a more liberal approach, the engines can operate "on condition", and I know of a number that are working fine at 1500 hours. Indeed the same basic engine is used to power generating sets in Siberian oilfields, and they expect to get 20,000 hours, but of course operating continuously with very few start-ups and at about 55/60% power. Richard Goode Aerobatics Rhodds Farm Lyonshall Hereford HR5 3LW Tel: +44 (0) 1544 340120 Fax: +44 (0) 1544 340129 www.russianaeros.com -----Original Message----- From: owner-yak-list-server@matronics.com [mailto:owner-yak-list-server@matronics.com] On Behalf Of ZUDSJ Sent: 18 February 2015 12:38 Subject: Yak-List: M14P Overhaul TBO Hi I am new to this forum and a new Yak 52 owner in South Africa. I wanted to find out what the TBO is for the M14P in other countries as I believe that with the kind of flying we do (post military) and the kind of maintenance we do surely these engines can take more than 500 hours before complete overhaul? I am aware that this topic has probably been debated to death but really keen on hearing from other Yak owners in other countries. Many thanks Jason-South Africa Read this topic online here: http://forums.matronics.com/viewtopic.php?p=438473#438473 -- This message has been scanned for viruses and dangerous content by MailScanner, and is believed to be clean. ________________________________ Message 3 _____________________________________ Time: 11:45:19 AM PST US From: "Bitterlich, Mark G CIV NAVAIR, WD" Subject: RE: Yak-List: M14P Overhaul TBO Some comments to add. Of course your mileage may vary from engine to engine, but mine lost the first mag around 600 hours due to an internal gear failure. It locked up and sheared the coupling. Replaced it, and 100 hours later, the other mag quit dead due to a bad coil. I found it interesting that both mags quit within 100 hours of each other. Other than that, at 800+ hours, I have lost the compressor once, and have had to repair exhaust valves on two cylinders from leading accumulation on the exhaust valve. That happened very early on the engine and I was running it at low RPM and low power settings for cross countries. I since added ... wait for it... wait for it... *MARVEL MYSTERY OIL* to the fuel and started running the engine much harder and all the leading problems just went away. Lost an oil screen and course fuel screen, oil pressure and fuel pressure transducer, and two primer hoses. They seem to go bad constantly, no idea why really. Possibly I am over-pressurizing them when priming? Don't know. Bottom line, I believe having your mags rebuilt after about 500 hours or so might not be a bad idea? Not sure, but I don't like to lose mags in flight. Of course, that's why there are TWO! :-) Mark -----Original Message----- From: owner-yak-list-server@matronics.com [mailto:owner-yak-list-server@matronics.com] On Behalf Of Richard Goode Sent: Wednesday, February 18, 2015 9:24 AM Subject: RE: Yak-List: M14P Overhaul TBO --> The official factory TBO is 750 hours before first overhaul, but 500 hours for the M 14 PF. Then the TBO is 500 hours. To the best of my knowledge this must be observed in all European countries, although some will give a 10% extension "on condition". In other countries with a more liberal approach, the engines can operate "on condition", and I know of a number that are working fine at 1500 hours. Indeed the same basic engine is used to power generating sets in Siberian oilfields, and they expect to get 20,000 hours, but of course operating continuously with very few start-ups and at about 55/60% power. Richard Goode Aerobatics Rhodds Farm Lyonshall Hereford HR5 3LW Tel: +44 (0) 1544 340120 Fax: +44 (0) 1544 340129 www.russianaeros.com -----Original Message----- From: owner-yak-list-server@matronics.com [mailto:owner-yak-list-server@matronics.com] On Behalf Of ZUDSJ Sent: 18 February 2015 12:38 Subject: Yak-List: M14P Overhaul TBO Hi I am new to this forum and a new Yak 52 owner in South Africa. I wanted to find out what the TBO is for the M14P in other countries as I believe that with the kind of flying we do (post military) and the kind of maintenance we do surely these engines can take more than 500 hours before complete overhaul? I am aware that this topic has probably been debated to death but really keen on hearing from other Yak owners in other countries. Many thanks Jason-South Africa Read this topic online here: http://forums.matronics.com/viewtopic.php?p=438473#438473 -- This message has been scanned for viruses and dangerous content by MailScanner, and is believed to be clean. ------------------------------------------------------------------------------------- Other Matronics Email List Services ------------------------------------------------------------------------------------- Post A New Message yak-list@matronics.com UN/SUBSCRIBE http://www.matronics.com/subscription List FAQ http://www.matronics.com/FAQ/Yak-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/yak-list Browse Digests http://www.matronics.com/digest/yak-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.