Transcription of CONTINENTAL AIRCRAFT ENGINE service bulletin M87-21 ...
1 CONTINENTAL AIRCRAFT ENGINE TELEDYNE INDUSTRIES, INC. 1987 TELEDYNE CONTINENTAL MOTORSA ircraft Products DivisionPO Box 90 Mobile Alabama 36601 Member of GAMAG eneral AviationManufacturer s Associationservice bulletin7 October 1987 SUBJECT:OPERATION AND SERVICEMODELSAFFECTED:TSIO520BE - ALL This ENGINE is used in the Piper Malibu :Within the next 25 hoursThis information is being written in service bulletin form in an attempt to bring to the attention ofPiper Malibu owners/operators and service personnel some items of extreme importance thatare not being given proper of Peak:Field reports and Analytical evaluations indicate that in many instances thisengine is being operated in the cruise configuration at mixture settings other than50 degrees F lean of are in a never ending struggle to supply service information to theowners/operators and maintenance personnel.
2 One of these vehicles is in theform of service BULLETINS. Inspection reports from the field, factoryevaluations and compliance records indicate that many engines have notcomplied with some of the bulletins or have not complied service bulletin M86-17 Subject: Thru Bolt Torque This service bulletin was published September 20, to comply with this service bulletin (M86-17) could result in premature enginewear and/or service bulletin M86-20 Subject: Air/Oil Separator Drain Modification This service bulletin was published December 15, to comply with this service bulletin (M86-20) could result in premature enginewear and/or damage.
3 (Continued) M87-21 Technical Portions AreFAA Approved7 October 1987M87-21 Page 23. service bulletin M87-12 Subject: Recommended Fuel and Oil Grades This service bulletin deals with fuels and oils for use in TCM engines. Italso addresses the proper oil and filter changes service bulletin states, "Whenusing larger (approximately "high) full flow oil filters, therecommended number of operatinghours between oil changes and filterscan be increased to 100 hours." Perthe TCM parts book the larger (long)filter is specified for the TSIO520 BEengine. From engines returned toTCM and others inspected in thefield, we find that in many instancesthe smaller (approximately "high) filter is being installed.
4 Thesmaller (short) filter is NOT approvedfor this and filter change intervals in manyinstances are not being accomplishedas to comply with this ServiceBulletin (M87-12) could result inpremature ENGINE wear and/ordamage.
