Lycoming Connecting Rods

New mandatory service bulletin requires connecting rod inspection on lycoming engines july 20 2017 by general aviation news staff lycoming has issued mandatory service bulletin 632 that requires owners to check their engines for connecting rods that contain bushings that do not meet lycoming engine s specifications within the next 10 hours of operation.

Lycoming connecting rods.

All supported lycoming reciprocating aircraft engines. 05k23068 lycoming kit conn. Lycoming crankshaft connecting rods lycoming crankshaft connecting rods. These fit most o 235 o 320 and io 320 engines.

Remove discard and replace the connecting rod bushing. This service instruction shows that certain piston part numbers are designed to fall within a specified standard weight range. Use of a connecting rod stamped with an s will ensure that the weight match between rods is always within the tolerance allowed by the lycoming specification for that particular part number. One 1 rod appears to have been overhauled one 1 as removed and one 1 with bushing removed.

Is the 5104 61477 a old p n. 2 if the chamfer of the connecting rod and the chamfer of the connecting rod bushing do not align figure 8 the connecting rod bushing has moved within the connecting rod. I have found a nos set of lycoming rods pn 5104 61477 stating they are for a o 290. If a piston is to be replaced it is strongly recommended that the power plant mechanic refer to lycoming service instruction no.

Lycoming connecting rods. My o 290 manual calls out 78030 s as the correct part. This is a set of three 3 each lycoming connecting rods. Contact lycoming engines product support at 1 877 839 7878 toll free or 1 570 327 7222 or email.

Lynda phillips created date. View full version. Whenever new connecting rods and or new connecting rod bolts are being installed. Shortwingpipers org public area where can i find it.