MSB Service Bulletin 

No. MSB-E4-007/3 

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 

22 Mar 2010 3 28 Nov 2012 1-5 

© 2012 by Austro Engine GmbH – AUSTRIA – www.austroengine.at

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1. BASIC INFORMATION 

1.1. SUBJECT 

Replacement of Waste Gate Controller 

1.2. ENGINES AFFECTED 

Type: E4 Engine 

Serial numbers: 

 E4-A-00001 to E4-A-00051 having waste gate controller E4A-41-120-000 Rev. 050 or 

lower installed. 

 E4-B-00001 to E4-B-00279 having waste gate controller E4B-41-120-000 Rev. 000 or 

E4A-41-120-000 Rev. 050 or lower installed. 

1.3. REASON 

There have been cases where the rod of the Waste Gate Controller cracked. Therefore 

replacement with latest Waste Gate Controller design is necessary. 

1.4. TIME OF COMPLIANCE 

At next maintenance action from Date of 2nd Revision, but not later than 100 operating hours or 

later than 30th April 2013, whichever comes first. 

1.5. CONCURRENT DOCUMENTS / REFERENCES 

Maintenance Manual – Doc. No.: E4.08.04, latest effective issue 

1.6. OTHER PUBLICATIONS AFFECTED 

None.
MSB Service Bulletin 

No. MSB-E4-007/3 

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 

22 Mar 2010 3 28 Nov 2012 2-5 

© 2012 by Austro Engine GmbH – AUSTRIA – www.austroengine.at

2. TECHNICAL DETAILS 

2.1. ACCOMPLISHMENT / INSTRUCTIONS 

Removal of installed Waste Gate Controller: 

1. Disconnect Hose at the top of the Waste Gate Controller 

2. Remove three M6 Bolts [02] 

3. Remove Circlip [01] 

4. Disconnect rod from waste gate lever and remove waste gate controller [03] 

 Install new Waste Gate Controller according to table section 3.1 

1. Install the three M6 Bolts [02] and torque them with 7 Nm 

2. Attach external pump to the top of the Waste Gate Controller and apply pressure 

till the rod starts to move 

3. Connect rod to waste gate lever 

4. Adjust Waste Gate Controller according to Engine Maintenance Manual E4.08.04, 

Chapter 81-00-32. 

 Note: For fixing of the rod on the waste gate lever use new circlip. 

02

01 03
MSB Service Bulletin 

No. MSB-E4-007/3 

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 

22 Mar 2010 3 28 Nov 2012 3-5 

© 2012 by Austro Engine GmbH – AUSTRIA – www.austroengine.at

2.2. ILLUSTRATIONS 

None. 

2.3. MASS (WEIGHT) 

Not affected. 

2.4. APPROVAL STATEMENT 

The technical content of this document has been approved under the authority of DOA No. 

EASA.21J.399. 

3. PLANNING INFORMATION 

3.1. MATERIAL & AVAILABILITY 

Amount Part Name Part Number Rev. Number 

1 Waste Gate Controller E4A-41-120-000 070 or higher 

1 Circlip DIN 6799-5 --- 

For materials & availability please contact the Austro Engine GmbH – After Sales Support 

(e-mail: service@austroengine.at; Tel: +43 2622 23000 2525) 

3.2. SPECIAL TOOLS 

Not applicable. 

3.3. LABOR EFFORT 

Approximately 30 minutes. 

3.4. CREDIT 

Materials as listed in section 3.1 and transportation costs of part if within warranty time 

period. 
MSB Service Bulletin 

No. MSB-E4-007/3 

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 

22 Mar 2010 3 28 Nov 2012 4-5 

© 2012 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 chapter 2.1 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 chapter 1.4. 

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). 

5. EXPLANATORY NOTES 

5.1. 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 

Execution Report 
MSB Service Bulletin 

No. MSB-E4-007/3 

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 

22 Mar 2010 3 28 Nov 2012 5-5 

© 2012 by Austro Engine GmbH – AUSTRIA – www.austroengine.at

 EXECUTION REPORT 

TO 

SERVICE BULLETIN MSB-E4-007/2 

ENGINE DATA

Engine serial number: ____________________ 

Engine operating hours: ____________________ 

Date of exchange: ____________________ 

AIRCRAFT DATA

Aircraft serial number: ____________________ 

Aircraft registration: ____________________ 

____________________________________ 

Date, Name, Signature 

Please submit the completed form to fax No.: +43(0)2622–23000–2709 or to the following email address: service@austroengine.at.