Technify Motors (Thielert) SB TMG 125-1020: No revision named, text

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Technify Motors GmbH Tel: +49 37204 696 0 Motors Technify Platanenstrasse 14 Fax: +49 37204 696 2912 www.centurion-engines.com 09356 Sankt Egidien, Germany info@centurion-engines.com SB TMG 125-1020 P1, Initial Issue

SERVICE BULLETIN PRIORITY 1 - SAFETY Service Bulletin No. / SB TMG 125-1020 P1, Initial Issue / January 27, 2016 Date:

Subject: Gearbox Oil Leak Inspection Type affected: TAE 125-02-99 and TAE 125-02-114 Models affected: The following GEARBOX serial numbers are affected if a clutch is installed:

00095 00107 00139 00160 00171 00172 00179 00189 00224 00327 00396 00432 00459 00481 00564 00688 00697 00884 00923 00957 01019 01048 01081 01082 01106 01125 01236 01237 01241 01245 01288 01311 01314 01351 01357 01361 01388 01418 01427 01487 01529 01534 01561 01598 01634 01655 01704 01711 01755 01762 01786 01844 01881 01883 01884 01887 01891 01893 01904 01928 01933 01935 01951 01977 01978 01986 02026 02040 02041 02127 02141 02167 02189 02228 02289 02298 02304 02314 02316 02354 02432 Technify -Motors Checked Approved Office of Airworthiness C. Rudolph, CVE D. Hartung, Office of Airwortigeralfy Motors GmbH DOA No. EASA.21J.010 Replaces Service Bulletin No. / Date: Page 1 / 4

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Technify Motors GmbH Platanenstrasse 14 09356 Sankt Egidien, Germany Tel: +49 37204 696 0 Fax: +49 37204 696 2912 www.centurion-engines.com info@centurion-engines.com SB TMG 125-1020 P1, Initial Issue Replaces Service Bulletin No. / Date:

- Page 2 / 4

Figure 1 place of serial number

Classification: Category P1 – SAFETY

Time of Compliance: Measures have to be accomplished within the next 50 flight hours or with the next maintenance action.

Reason: Radial shaft sealing ring may not seal properly due to an improper lapped gearbox drive shaft. This can lead to an oil leak and a slipping clutch and finally to a loss of power.

Page 3Open in PDF

- Page 3 / 4

Correction:

• Remove the gearbox and replace the clutch by dual mass flywheel in accordance with RM-02-02, Chapter 72-10.18, Issue 3, Revision - or later approved revisions.

• Inspect the gearbox, check the rear radial shaft sealing ring on the gear shaft for oil leakage and moisture, see Figure 2 and Figure 3.

Figure 2 place of possible leakage

• If there is a leakage or moisture, see Figure 3, replace the gearbox.

 Note: The clutch has to be replaced by the dual mass flywheel in each case.

Figure 3 leakage / moistly

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- Page 4 / 4

For Installation of the dual mass flywheel refer to RM-02-02, Chapter 72-10.18 / 72-10.19.

 Note:

At first installation of the dual mass flywheel the starter monitoring loom must be installed.

Please observe applicable published aircraft service bulletins for further instructions:

• SB TMG 125-1018 P1, revision 1 or later approved revisions

• Send the clutch and if changed the gearbox to Technify Motors GmbH.

Remarks: -

Parts:

Item Part Number Description Quantity 1 05-7211-K018702 Flywheel installation set 1

1.1 05-7211-K018302 flywheel 1

1.2 NM-0000-0233601 hexalobular socket head cap screw M10x1x20 8 Tools:

2 VR00173-01-01XX Flywheel Locking Tool 1 3 VR00480-00-00XX Testing Tool DMF 1 Additional parts, if the gearbox has a leakage or moisture.

4 Gearbox, Assembly 1 5 05-7212-K014502 stud screw M8x110-8.8 1 6 NM-0000-0042301 hexagon nut M8 - 05 - A2L 1 7 NM-0000-0208501 clip for cable tie 14x16, s= 1 ... 3, top, St/PA 4 8 NM-0000-0018101 hexagon nut ISO 10511 - M6 - 8 - A2L (only DA42) 2 Additional parts if required, refer to RM-02-02, Chapter 72-10.15, Issue 3, Revision 3 or later approved revisions.

Approval: The technical information contained in this document has been approved under the authority of EASA Design Organisation Approval No.

Technify Motors (Thielert) SB TMG 125-1020: No revision named

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EASA.21J.010.