Supersedes Service Instruction No. 1256E

April 5, 2012

MODELS AFFECTED

Intake and exhaust valve guides on all Lycoming engines except as listed below: Intake valve guides only on O-235 and O-290 series unless modified in accordance with the latest revision of Service Instruction No. 1246.

TIME OF COMPLIANCE

When replacing valve guides

This Service Instruction identifies flanged intake and exhaust valve guides, and respective valve guide drifts, reamers, and gauges necessary to install valve guides on applicable Lycoming engine models.

DATE RELEASED:

April 2012

TITLE:

O-540-A4E5 Parts Catalog

DOCUMENT PART NUMBER:

PC-515-A4E5

MODELS AFFECTED:

O-540-A4E5

DATE RELEASED:

April 2012

TITLE:

AEIO-390-A Operator's Manual 

DOCUMENT PART NUMBER:

60297-42

MODELS AFFECTED: 

AEIO-390-A1A6, AEIO-390-A1B6, AEIO-390-A3A6, AEIO-390-A3B6

DATE: March 14, 2012 

DATE: March 8, 2012 

MODELS AFFECTED

IO­540­AB1A5 or its applicable crankshaft that had propeller flange bushings replaced in the field in accordance with Service Instruction No. 1098G.

Supersedes Service Instruction No. 1458F and Obsoletes Service Instruction Nos. 1106D, 1311A, and 1318

November 10, 2015

MODELS AFFECTED

All supported Lycoming reciprocating aircraft engines

TIME OF COMPLIANCE

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

REASON FOR REVISION

Clarified connecting rod bolt selection and installation instructions, added new Figure 1, revised part numbers in Table 1, and added information from obsolete Service Instructions

February 27, 2012 

MODELS AFFECTED

All Lycoming engines employing Bendix RS or RSA fuel injector systems

TIME OF COMPLIANCE

As required by subject Service Bulletin

This Service Instruction includes a reprint of Bendix Service Bulletin No. RS­77, Rev. 2 which  was issued to correct part numbers.

DATE: February 23, 2012 

MODELS AFFECTED

Engines that used tappet P/N 15B26064.

TIME OF COMPLIANCE

At next overhaul, whenever  tappet  replacement is necessary, or earlier  at  owner’s discretion.

February 1, 2012 

MODELS AFFECTED

All 320, 360, 390, 540, 580, IO­720 Direct Drive Series Engines with Two  Individual Magnetos All 235  Engines with the  Accessory Housing Machined  for Oil Cooler  Installation 

TIME OF COMPLIANCE

At owner’s discretion 

This Service Instruction identifies remote­mounted  oil filter  kits for installation on specified Lycoming  engines.

DATE RELEASED:

January 2012

TITLE:

O-320-B & -D Parts Catalog 

DOCUMENT PART NUMBER:

PC-203-9

MODELS AFFECTED:

O-320-B2B, O-320-B2C, O-320-B3B, O-320-D1A, O-320-D1D, O-320-D1F, O-320-D2A, O-320-D2B, O-320-D2C, O-320-D2G