Lycoming Connecting Rods

Whenever new connecting rods and or new connecting rod bolts are being installed.

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. I have found a nos set of lycoming rods pn 5104 61477 stating they are for a o 290. These fit most o 235 o 320 and io 320 engines. Replacement connecting rod includes connecting rod bolts and nuts for each connecting rod removed and returned to lycoming engines through an authorized lycoming distributor refer to the replacement connecting rod assemblies table bearings for each connecting rod removed order the same p n bearings as removed refer to figure 17 for connecting rod bearing p n location.

My o 290 manual calls out 78030 s as the correct part. Shortwingpipers org public area where can i find it. Rod bearing replacement for malibu ae2a. If a piston is to be replaced it is strongly recommended that the power plant mechanic refer to lycoming service instruction no.

View full version. 05k23068 lycoming kit conn. 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. All supported lycoming reciprocating aircraft engines.

Contact lycoming engines product support at 1 877 839 7878 toll free or 1 570 327 7222 or email. Is the 5104 61477 a old p n. This service instruction shows that certain piston part numbers are designed to fall within a specified standard weight range. Lycoming connecting rods.

Lycoming crankshaft connecting rods lycoming crankshaft connecting rods. Clarified connecting rod bolt selection and installation instructions added new figure 1 revised part numbers in table 1 and added information from obsolete service. Remove discard and replace the connecting rod bushing. 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.