Lycoming 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.

Lycoming connecting rods.

Remove discard and replace the connecting rod bushing. I have found a nos set of lycoming rods pn 5104 61477 stating they are for a o 290. Lycoming crankshaft connecting rods lycoming crankshaft connecting rods. Is the 5104 61477 a old p n.

05k23068 lycoming kit conn. Shortwingpipers org public area where can i find it. If a piston is to be replaced it is strongly recommended that the power plant mechanic refer to lycoming service instruction no. 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.

This service instruction shows that certain piston part numbers are designed to fall within a specified standard weight range. My o 290 manual calls out 78030 s as the correct part. One 1 rod appears to have been overhauled one 1 as removed and one 1 with bushing removed. These fit most o 235 o 320 and io 320 engines.

View full version. All supported lycoming reciprocating aircraft engines. Rod bearing replacement for malibu ae2a. Lycoming connecting rods.

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. Lynda phillips created date. Whenever new connecting rods and or new connecting rod bolts are being installed. 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.