WebLycoming Mandatory Service Bulletin No. 388C required exhaust valve guide cleaning every 300 hours for helicopter engines and every 400 hours for all other engines. McFarlane valve guide reamers are for cleaning carbon build-up only and must not be used for finish reaming of new valve guides. Webunexpectedly, Lycoming SB 388C mandates checking valve stem clearances every 400 hours in our engines, while Lycoming SI 1425A outlines procedures for preventing valve sticking. We have included both of those Lycoming publications along with this article.Although it is much
AirWard Lycoming MSB 388C Valve Guide Inspection Kit
WebS.B. 386 Alternator Bearing Lubrication - TIGO-541-E S.I. 1254 Alternator Belt Replacement S.I. 1129A Alternator Belt Tension, Methods of Checking S.B. 511 Alternator Bracket Installation S.B. 356 Alternator Bracket Support, Addition of - TIO-540-A2C S.I. 1283A Alternator Cog Belt and Pulley Installation S.I. 1330A WebSep 1, 2024 · Per the SB 388C, the dial indicator measuring point is 2.5" from the top of the valve guide. The test is simple... push the valve in a little to get it off the seat then take your finger and press down on the valve stem right where it goes into the guide. how to use android tv remote
Lycoming SB 388C "Wobble Test" Tool Info - Page 2 - VAF Forums
WebR44- Lycoming Service Bulletin No. 388C. 1 Attachment (s) My new helicopter is in for annual inspection. This is a 2024 new R44 Raven I with TT 105 hours. The shop asked me … http://www.jodel-fr.com/fichiers/docu/lycoming/Lycoming_SB_SL/List%20of%20Lycoming%20Service%20Bulletins%2C%20Letters%2C%20and%20Instruction.html Websticking in a Lycoming engine. For that you need to do what is known as "the rope trick", followed by a wobble test. It involves removing the plugs, filling the cylinder with rope through one of the plug holes, bringing the piston up to press the rope against the valves to hold them in place. You then remove the keeper and the exhaust valve spring. how to use android subsystem windows 11