 | GEnx-1B SERVICE BULLETIN - 72-0335 R00 | Revised: 05/18/2018 |
| SB 72-0335 R00 ENGINE - GENERAL (72-00-01) - Move Oil Return Tube to Engine Assembly Level for Assembly Simplification | Issued: 05/18/2018 | |
| GEnx-1B SERVICE BULLETIN - 72-0335 R00 | Revised: 05/18/2018 |
| SB 72-0335 R00 ENGINE - GENERAL (72-00-01) - Move Oil Return Tube to Engine Assembly Level for Assembly Simplification | Issued: 05/18/2018 | |
| GE PROPRIETARY INFORMATION | |
| The information contained in this document is GE proprietary information and is disclosed in confidence. It is the property of GE and shall not be used, disclosed to others or reproduced without the express written consent of GE, including, but without limitation, it is not to be used in the creation, manufacture, development, or derivation of any repairs, modifications, spare parts, designs, or configuration changes or to obtain FAA or any other government or regulatory approval to do so. If consent is given for reproduction in whole or in part, this notice and the notice set forth on each page of this document shall appear in any such reproduction in whole or in part. | |
| This technical data is considered EAR controlled pursuant to 15 CFR Parts 730-774 respectively. Transfer of this data by any means to a Non-US Person, whether in the United States or abroad, without the proper U.S. Government authorization (e.g., License, exemption, NLR, etc.), is strictly prohibited. | |
| Copyright (2018) General Electric Company, U.S.A. |
| 1. | PLANNING INFORMATION |
| A. | Effectivity |
| * * * FOR GEnx-1B64, -1B64/P1, -1B64/P2, -1B67, -1B67/P1, -1B67/P2, -1B70, -1B70/75/P1, -1B70/75/P2, -1B70/P1, -1B70/P2, -1B70C/P1, -1B70C/P2, -1B74/75/P1, -1B74/75/P2, -1B75/P1, -1B76A/P2 |
| B. | Description |
| This Service Bulletin releases two new catalog sequence numbers (CSNs)/significant item number (SIN). |
| C. | Compliance |
| Category 9 |
| Information only |
| Impact E |
| This recommendation is to improve the cost of ownership, reduce maintenance requirements, or is a product improvement. |
| D. | Concurrent Requirements |
| None. |
| E. | Reason |
| (1) | Objective: |
| To improve maintainability and move the oil return tube hardware parts to the engine assembly level. |
| (2) | Condition: |
| Currently, the test assembly has to remove the oil return tube and its attaching hardware in order to install the test enabling hardware. This removal and reinstallation increases the assembly time and could cause damage to the hardware during removal. |
| (3) | Cause: |
| The current oil return tube, support brackets, machine bolts, cushioned clamps and seals need to be removed when the engine reaches the test site to attach the test enabling hardware. |
| (4) | Improvement: |
| Moving the oil return tube to the engine assembly level will reduce the assembly time and prevent any risk for hardware damage during removal. |
| (5) | Substantiation: |
| Substantiation is by comparative analysis. |
| F. | Approval |
| This Service Bulletin contains no modification information that revises the approved configuration and therefore does not require FAA or regulatory approval. |
| G. | Manpower |
| No additional man-hours are required to comply with this Service Bulletin. |
| H. | Weight and Balance |
| Weight and balance are not changed. |
| I. | References (Use the latest version of these documents) |
| GEK 112851, GEnx-1B Engine Manual (EM) |
| GEK 112864, GEnx-1B Engine Illustrated Parts Catalog (EIPC) |
| NOTE: |
|
| J. | Publications Affected |
| GEK 112851, GEnx-1B Engine Manual (EM) |
| GEK 112864, GEnx-1B Engine Illustrated Parts Catalog (EIPC) |
| K. | Interchangeability |
| Not applicable. |
| L. | Software Accomplishment Summary |
| Not applicable. |
| 2. | MATERIAL INFORMATION |
| A. | Material - Price and Availability |
| (1) | Parts necessary to do this Service Bulletin: |
| None. |
| (2) | Other Spare Parts: |
| None. |
| (3) | Consumables: |
| None. |
| B. | Industry Support Information |
| None. |
| C. | Configuration Chart |
|
| Operation Codes AD=Add QTC=Quantity Change RM=Remains |
| Change Codes 5=Qualified interchangeability. Refer to paragraph 1.K., Interchangeability. |
| Support Codes None. |
| D. | Parts Disposition |
| None. |
| E. | Tooling - Price and Availability |
| None. |
| 3. | ACCOMPLISHMENT INSTRUCTIONS |
| A. | General |
| (1) | Not applicable. |