 | GEnx-1B SERVICE BULLETIN - 72-0135 R00 | Revised: 05/16/2013 |
| SB 72-0135 R00 AIR - LPT ACC Manifolds (75-24-10) - LPT ACC Manifold Connectors Replacement | Issued: 05/16/2013 | |
| GEnx-1B SERVICE BULLETIN - 72-0135 R00 | Revised: 05/16/2013 |
| SB 72-0135 R00 AIR - LPT ACC Manifolds (75-24-10) - LPT ACC Manifold Connectors Replacement | Issued: 05/16/2013 | |
| 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 (2013) General Electric Company, U.S.A. |
| 1. | PLANNING INFORMATION |
| A. | Effectivity |
|
| This Service Bulletin is applicable to all GEnx-1B engines. |
| This Service Bulletin has been introduced in production to these GEnx-1B engines: |
| • |
|
| These serial numbers are the best available data. |
| B. | Description |
| This Service Bulletin releases changes to the LPT ACC manifold connectors from the current titanium housings and silicone seals to the silicone bellows and hose clamps. |
| C. | Compliance |
| Category 7 |
| GE recommends that you do this Service Bulletin at customer's convenience or option. |
| NOTE: |
|
| D. | Concurrent Requirements |
| None. |
| E. | Reason |
| (1) | Objective: |
| To introduce new parts and reduce cost of ownership. |
| (2) | Condition: |
| None. |
| (3) | Cause: |
| None. |
| (4) | Improvement: |
| The material of the replaced connectors changes from titanium to silicone. |
| (5) | Substantiation: |
| Substantiation is by comparative analysis and test. |
| F. | Approval |
| This Service Bulletin has been reviewed by the FAA and the repair(s) and modification(s) herein comply with the applicable Federal Aviation Regulations and are FAA APPROVED for installation in the model(s) listed in this Service Bulletin. |
| G. | Manpower |
| No additional man-hours are required to comply with this Service Bulletin. |
| H. | Weight and Balance |
| The complete compliance with this Service Bulletin decreases weight by 0.10 lb (0.045 kg). |
| I. | References (Use the latest version of these documents) |
| GEK 112851, GEnx-1B Engine Manual (EM) |
| GEK 112862, GEnx-1B Cleaning, Inspection, and Repair Manual (CIR) |
| GEK 112864, GEnx-1B Engine Illustrated Parts Catalog (EIPC) |
| NOTE: |
|
| J. | Publications Affected |
| GEK 112851, GEnx-1B Engine Manual (EM) |
| GEK 112862, GEnx-1B Cleaning, Inspection, and Repair Manual (CIR) |
| GEK 112864, GEnx-1B Engine Illustrated Parts Catalog (EIPC) |
| K. | Interchangeability |
| The air bellows P/N 2363M85P01 and clamp P/N 1519M13P09 must be installed concurrently on an engine and cannot be mixed with the seal housing P/N 1682M90P16 and seal P/N 1682M91P08. Proposed hardware is physically and functionally interchangeable when the air bellows P/N 2363M85P01 and clamp P/N 1519M13P09 are installed as a set. |
| L. | Software Accomplishment Summary |
| Not applicable. |
| 2. | MATERIAL INFORMATION |
| A. | Material - Price and Availability |
| (1) | Parts necessary to do this Service Bulletin: |
|
| NOTE: |
|
| (2) | Other Spare Parts: |
| None. |
| (3) | Consumables: |
| None. |
| B. | Industry Support Information |
| None. |
| C. | Configuration Chart |
|
| Operation Codes AD=Add RE=Replace RM=Remains |
| Change Code 5=Qualified interchangeability. Refer to paragraph 1.K., Interchangeability. |
| Support Code E=Old parts will be supplied, and can be used at other engine locations. |
| D. | Parts Disposition |
| Use serviceable old parts at other engine locations. |
| Use serviceable old parts for engines that have not changed. |
| E. | Tooling - Price and Availability |
| None. |
| 3. | ACCOMPLISHMENT INSTRUCTIONS |
| A. | General |
| (1) | If necessary, loose the air manifold bolts (15-110, 15-120, and 15-130, 75-24-10). Refer to Figure 1. |
| (2) | Remove the seal housings (15-090) from the LPT ACC manifolds (15-052, 15-062, 15-072, and 15-082). |
| (3) | Remove the air duct seals (15-100) from the seal housings. |
| (4) | Install the bellows (1, Figure 1) on the LPT ACC air manifolds (15-052, 15-062, 15-072, and 15-082) with the clamps (2, Figure 1). |
| (a) | Make sure that the bolt bodies of the clamps (2) face forward and that the bolt heads are pointed away from the engine. |
| (b) | Make sure the bead of the manifold is not exposed. |
| (5) | Torque the air manifold bolts (15-110, 15-120, 15-130) to the LPT case brackets to 106-124 lb in. (12.0-14.0 N.m). |
| (6) | Torque the clamp (2) to 32-38 lb in. (3.6-4.3 N.m). |
