# Austro Engine Mandatory Service Bulletin MSB-E4-017/2: Revision 2 - Rights: © Austro Engine. Filed by the FAA in regulations.gov docket FAA-2017-1138; AD 2018-18-02 incorporates this document by reference. Not covered by OpenAirDocs’ CC0 dedication. - Document: [Austro Engine Mandatory Service Bulletin MSB-E4-017/2](https://openairdocs.org/service-documents/austro-engine/msb-e4-017-2.md) - Title as filed: Austro Engine MSB No. MSB-E4-017_2 - Pages: 7 - PDF: https://openairdocs.org/files/sha256/f6/cf/f6cfd967bc43ecf461d2fc9d04a5b19d5d11639c0e945ccb92f4a56c0caaefb2 - Page: https://openairdocs.org/service-documents/austro-engine/msb-e4-017-2/file/f6cfd967bc43 ## Text Each page's text from the PDF; open the PDF at a page with #page=N. ### Page 1 Mandatory Service Bulletin No. MSB-E4-017/2 Austro Engine GmbH Rudolf-Diesel-Strasse 11 A-2700 Wiener Neustadt Tel: +43 2622 23000 FAX: +43 2622 23000-2711 First Issue Date Rev. No. Revision Date Page 30 Jun 2014 2 02 Dec 2016 1-7 © 2016 by Austro Engine GmbH – AUSTRIA – www.austroengine.at 1. BASIC INFORMATION SUBJECT Check/Replacement of timing chain. ENGINES AFFECTED Type: E4 Model(s): E4 Serial number(s): All REASON On a few engines considerable wear of the timing chain has been detected, which could lead to a fracture of the timing chain and a subsequent loss of power. The check of the condition of the timing chain including instructions for replacing the timing chain and the chain wheel if applicable are given in the maintenance manual of the E4 engine. Windmilling restarts cause high stress onto the timing chain. Therefore, windmilling restarts as part of normal operation has already been removed from the Operation Manual. In addition, a mandatory timing chain replacement for engines with known in-flight restarts by wind milling has been defined. ### Page 2 Mandatory Service Bulletin No. MSB-E4-017/2 Austro Engine GmbH Rudolf-Diesel-Strasse 11 A-2700 Wiener Neustadt Tel: +43 2622 23000 FAX: +43 2622 23000-2711 First Issue Date Rev. No. Revision Date Page 30 Jun 2014 2 02 Dec 2016 2-7 © 2016 by Austro Engine GmbH – AUSTRIA – www.austroengine.at TIME OF COMPLIANCE For engines with known windmilling restarts: At 900 hours operation time of the timing chain replace the timing chain. NOTE: For timing chains with more than 900 hours operation time replace the timing chain within the next 100 hours operation time. NOTE: Prior compliance with MSB-E4-017 and MSB-E4-017/1 does not preclude compliance with this MSB for airplanes with known windmilling restarts. For engine without known windmilling restarts: Check the timing chain in the scheduled maintenance intervals according to Maintenance Manual E4.08.04 section 05-20-00. CONCURRENT DOCUMENTS / REFERENCES Maintenance Manual – Doc. No.: E4.08.04, latest effective issue MM-TR-MDC-E4-396 Operation Manual – Doc. Nos.: E4.01.01, latest effective issue OM-TR-MDC-E4-359b OTHER PUBLICATIONS AFFECTED None. ### Page 3 Mandatory Service Bulletin No. MSB-E4-017/2 Austro Engine GmbH Rudolf-Diesel-Strasse 11 A-2700 Wiener Neustadt Tel: +43 2622 23000 FAX: +43 2622 23000-2711 First Issue Date Rev. No. Revision Date Page 30 Jun 2014 2 02 Dec 2016 3-7 © 2016 by Austro Engine GmbH – AUSTRIA – www.austroengine.at 2. TECHNICAL DETAILS ACCOMPLISHMENT For engines with known windmilling restarts:  Make sure Maintenance Manual E4.08.04 revision 26 or hig her is used and MM-TR-MDC-E4-396 is inserted into the Maintenance Manual E4.08.04.  Replace the timing chain according to section 85-40-50 and subs equent of the Maintenance Manual E4.08.04.  Make sure OM -TR-MDC-E4-359b is i nserted into the Operation Manual E4.01.01 or a revision of the OM with the Temporary Revision incorporated is used.  For engines installed in airplanes with normal operation procedures for inflight restart, make sure that an applicable Temporary Revision (e.g. TR-MÄM-42-973) is inserted into the Airplane Flight Manual (AFM) that lists windmilling only as an emergency operation procedure. For engines without known windmilling restarts:  Make sure Maintenance Manual E4.08.04 revision 26 or hig her is used and MM-TR-MDC-E4-396 is inserted into the Maintenance Manual E4.08.04.  Check the timing chain according to section 85-40-40 and subsequent of the Maintenance Manual E4.08.04.  Make sure OM -TR-MDC-E4-359b is in serted into the Operation Manual E4.01.01 or a revision of the OM with the Temporary Revision incorporated is used.  For engines installed in airplanes with normal operation procedures for inflight restart, make sure that an applicable Temporary Revision (e.g. TR-MÄM-42-973) is inserted into the Airplane Flight Manual (AFM) that lists windmilling only as an emergency operation procedure. ILLUSTRATIONS None. MASS (WEIGHT) Not affected. APPROVAL STATEMENT The technical content of this document has been approved under the authority of DOA ref. EASA.21J.399. ### Page 4 Mandatory Service Bulletin No. MSB-E4-017/2 Austro Engine GmbH Rudolf-Diesel-Strasse 11 A-2700 Wiener Neustadt Tel: +43 2622 23000 FAX: +43 2622 23000-2711 First Issue Date Rev. No. Revision Date Page 30 Jun 2014 2 02 Dec 2016 4-7 © 2016 by Austro Engine GmbH – AUSTRIA – www.austroengine.at 3. PLANNING INFORMATION MATERIAL & AVAILABILITY Required material for checking the tension of the timing chain: E4 Engine configuration Amount Part Name Part Number Rev. Number -A -B/-C 1 Seal Boost Pressure Manifold E4A-04-000-004 000 X 1 Seal Alu E4A-75-600-401 000 X X Required material if the timing chain and the timing chain wheel have to be replaced: Amount Part Name Part Number Rev. Number 6 Toothed Washer DIN 6797 A6,4-VZ --- 2 Ring Seal DIN 7603-C12x16x2 CU --- 4 Ring Seal E4A-03-000-801 000 4 Screw (Injector Fixing) E4A-03-000-802 000 1 Seal Boost Pressure Manifold E4A-04-000-004 000 3 O-Ring Oil Return Line E4A-05-000-103 000 1 Seal Oil Return Line E4A-05-000-104 000 1 Chain wheel E4A-07-000-101 000 3 Screws for chain wheel E4A-07-000-402 000 1 O-Ring Sensor Housing CAS 2 DIN 3771-84x4xFPM70 --- 1 Timing chain, open version E4A-75-100-000 020 . ### Page 5 Mandatory Service Bulletin No. MSB-E4-017/2 Austro Engine GmbH Rudolf-Diesel-Strasse 11 A-2700 Wiener Neustadt Tel: +43 2622 23000 FAX: +43 2622 23000-2711 First Issue Date Rev. No. Revision Date Page 30 Jun 2014 2 02 Dec 2016 5-7 © 2016 by Austro Engine GmbH – AUSTRIA – www.austroengine.at SPECIAL TOOLS Required material for checking the tension of the timing chain: Amount Part Name Part Number 1 Timing chain measuring tool AEP-00150 Required material if the timing chain and the timing chain wheel have to be replaced: Amount Part Name Part Number 1 Camshaft adjusting tool AE300T009 1 Sealant Pistol AE300T027 1 Sealant (black) AE300T028*) 1 Grease for Injectors AE300T029 1 Chain guiding bar AEP-00139 1 Chain opening tool AEP-00158 1 Chain closing tool AEP-00159 1 Chain coupling AEP-00160 *) Alternatively Loctite 5970 can be used. LABOR EFFORT Not specified; conducted during line maintenance. CREDIT None. ### Page 6 Mandatory Service Bulletin No. MSB-E4-017/2 Austro Engine GmbH Rudolf-Diesel-Strasse 11 A-2700 Wiener Neustadt Tel: +43 2622 23000 FAX: +43 2622 23000-2711 First Issue Date Rev. No. Revision Date Page 30 Jun 2014 2 02 Dec 2016 6-7 © 2016 by Austro Engine GmbH – AUSTRIA – www.austroengine.at 4. REMARKS NOTE: o All measures must be carried out by a certified engine station and certified engine mechanics. o The accomplishment of the instructions shown under section 2 TECHNICAL DETAILS must be confirmed in the respective engine log book. o The accomplishment of the instructions must be carried out within the time of compliance according to section 1 TIME OF COMPLIANCE. o In case of doubt please contact the Austro Engine GmbH – After Sales Support (e-mail: service@austroengine.at; Tel: +43 2622 23000 2525). o For credit information contact Austro Engine GmbH – After Sales Support (e-mail: service@austroengine.at; Tel: +43 2622 23000 2525). ### Page 7 Mandatory Service Bulletin No. MSB-E4-017/2 Austro Engine GmbH Rudolf-Diesel-Strasse 11 A-2700 Wiener Neustadt Tel: +43 2622 23000 FAX: +43 2622 23000-2711 First Issue Date Rev. No. Revision Date Page 30 Jun 2014 2 02 Dec 2016 7-7 © 2016 by Austro Engine GmbH – AUSTRIA – www.austroengine.at 5. EXPLANATORY NOTES SYMBOL EXPLANATION WARNING: Disregarding these safety rules can cause personal injury or even death. CAUTION: Disregarding these special instructions and safety measures can cause damage to the engine or other components. NOTE: Additional note or instruction for better understanding of an instruction. 6. APPENDIX None --- OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain, except the copies of manufacturers’ service documents, which belong to their rights holders.