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
* * * FOR GEnx-1B54, -1B58, -1B64, -1B67, -1B70, -1B54/P1, -1B58/P1, -1B64/P1, -1B67/P1, -1B70/P1, -1B70/72/P1, -1B70/75/P1, -1B74/75/P1, -1B75/P1
This Service Bulletin has been introduced in production to these GEnx-1B engines:
•
GEnx-1B engines, serial numbers 956-236 and up.
These serial numbers are the best available data.
The drain manifold P/N 2360M48G01, drain manifold P/N 2311M77G01, tube cap P/N J1315G106, and CCC valve drain tube P/N 2374M63G01 are affected by this Service Bulletin.
B.Description
This Service Bulletin releases a new drain manifold P/N 2498M67G01, drain manifold P/N 2498M66G01, and CCC valve drain tube P/N 2498M68G01.
C.Compliance
Category 7
GE recommends that you do this Service Bulletin at customer's convenience or option.
NOTE:
This Service Bulletin can be accomplished in shop.
D.Concurrent Requirements
None.
E.Reason
(1)Objective:
To introduce new parts and reduce weight.
(2)Condition:
There are witness tees that are not required.
(3)Cause:
Witness tees were used during development engine testing to troubleshoot any potential oil leak oil source.
(4)Improvement:
This proposed change simplifies the assembly process and allows to reduce weight.
(5)Substantiation:
Substantiation is by analysis and comparative analysis.
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 0.279 lb (0.127 kg).
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:
The reference documents listed below are for the engine manufacturer's internal use only:
 
CID: 573705
 
BPP: 11-79-00-14
J.Publications Affected
GEK 112851, GEnx-1B Engine Manual (EM)
GEK 112864, GEnx-1B Engine Illustrated Parts Catalog (EIPC)
K.Interchangeability
Each superseded drain manifold and tube cap are qualified interchangeable with the proposed drain manifold. Mixing the proposed and superseded details of each drain manifold and tube cap set is not permitted.
Each of the three sets can be introduced separately.
L.Software Accomplishment Summary
Not applicable.
2.MATERIAL INFORMATION
A.Material - Price and Availability
(1)Parts necessary to do this Service Bulletin:
 
Part Number
Qty/ Eng
Part Name
Unit ($) Price
Pkg Qty
Lead Time Days
 
2498M67G01
(1)
Manifold, Drain
3,598.00
(1)
Quote
 
2498M66G01
(1)
Manifold, Drain
2,795.00
(1)
30
 
2498M68G01
(1)
Tube, CCC Valve Drain
2,147.00
(1)
30
NOTE:
Prices are provided for planning purposes and are subject to change.
(2)Other Spare Parts:
None.
(3)Consumables:
None.
B.Industry Support Information
None.
C.Configuration Chart
 
New Part Number
Qty/ Eng
Part Name
Old Part Number/ IPC Location
Qty/ Eng
Op Code
Chg/ Sprt Code
 
2376M20G01-G09
(X)
Propulsor Module Assembly
2376M20G01-G09
(X)
RM
-/-
 
.2498M67G01
15-030A, 73-11-43
(1)
Manifold, Drain
(SIN 37302)
.2360M48G01
15-030, 73-11-43
(1)
RE
5/B
 
--
(-)
Cap, Tube
(SIN 37361)
.J1315G106
15-100, 73-11-43
(1)
DE
5/E
 
.2498M66G01
05-010A, 73-11-43
(1)
Manifold, Drain
(SIN 37600)
.2311M77G01
05-010, 73-11-43
(1)
RE
5/B
 
--
(-)
Cap, Tube
(SIN 37661)
.J1315G106
05-060, 73-11-43
(1)
DE
5/E
 
.2498M68G01
01-010A, 73-11-43
(1)
Tube, CCC Valve Drain
(SIN 37900)
.2374M63G01
01-010, 73-11-43
(1)
RE
5/B
 
--
(-)
Cap Assembly, Tube
(SIN 37961)
.J1315G106
01-020, 73-11-43
(1)
DE
5/E
Operation Codes
DE=Delete
RE=Replace
RM=Remains
Change Code 5=Qualified interchangeability. Refer to paragraph 1.K., Interchangeability.
Support Codes B=Old parts will be supplied until all old parts are sold. E=Old parts will be supplied, and can be used at other engine locations.
D.Parts Disposition
Use serviceable old parts for engines that have not changed.
E.Tooling - Price and Availability
None.
3.ACCOMPLISHMENT INSTRUCTIONS
A.Removal
(1)Removal instructions for the core compartment cooling (CCC) valve drain tube have not changed. Refer to the GEnx-1B EM, 72-00-02, DISASSEMBLY 002, Subtask 72-00-02-030-408.
(2)Removal instructions for the drain manifold have not changed. Refer to the GEnx-1B EM, 72-00-02, DISASSEMBLY 002, Subtask 72-00-02-030-407.
(3)Removal instructions for the drain manifold have not changed. Refer to the GEnx-1B EM, 72-00-02, DISASSEMBLY 002, Subtask 72-00-02-030-407.
B.Installation
(1)Install the CCC valve drain tube (1, Figure 1) as follows:
(a)Connect the B-nut of the CCC valve drain tube (1) to the fuel drain tube (01-030, 73-11-43).
(b)Connect the B-nut of the CCC valve drain tube (1) to the CCC valve (01-010, 75-24-20).
(c)Torque the B-nuts to 262-308 lb in. (29.6-34.8 N.m).
(2)Install the drain manifold (2, Figure 2) as follows:
(a)Connect the two B-nuts to the upper drain manifold (01-380, 72-00-05).
(b)Connect the remaining B-nut to the nipple on the hydraulic pump bearing support (01-070, 72-64-00).
(c)Attach the drain manifold (2) to bracket (01-450, 72-00-05) with cushioned clamps (15-080, 73-11-43) and bolts (15-070).
(d)Attach the drain manifold (2) to bracket (01-400, 72-00-05) with cushioned clamp (15-080, 73-11-43) and bolt (15-070).
(e)Attach the drain manifold (2) to bracket (01-120, 72-00-05) with cushioned clamp (15-080, 73-11-43) and bolt (15-090).
(f)Torque the B-nuts to 262-308 lb in. (29.6-34.8 N.m).
(g)Torque the bolts (15-070) to 32-38 lb in. (3.6-4.3 N.m).
(h)Torque the bolts (15-090) to 32-38 lb in. (3.6-4.3 N.m).
(3)Install the drain manifold (3, Figure 3) as follows:
(a)Connect the B-nut to the drain tube (05-020).
(b)Connect the B-nut to the transient bleed valve (01-010, 75-31-11).
(c)Attach the drain manifold (3) to bracket (30-040, 73-11-40) with cushioned clamp (05-050, 73-11-43) and bolt (05-040).
(d)Attach the drain manifold (3) to bracket (20-030, 73-11-40) with cushioned clamp (05-050, 73-11-43) and bolt (05-040).
(e)Attach the drain manifold (3) to bracket (01-050, 73-21-10) with cushioned clamp (05-050, 73-11-43) and bolt (05-040).
(f)Triple torque the B-nuts to 262-308 lb in. (29.6-34.8 N.m).
(g)Torque the bolts (05-040) to 32-38 lb in. (3.6-4.3 N.m).
Installation of CCC Valve Drain Tube
Figure 1   (Sheet 1)
Installation of CCC Valve Drain Tube
Figure 1   (Sheet 2)
Installation of Drain Manifold
Figure 2   (Sheet 1)
Installation of Drain Manifold
Figure 2   (Sheet 2)
Installation of Drain Manifold
Figure 3   (Sheet 1)
Installation of Drain Manifold
Figure 3   (Sheet 2)
Installation of Drain Manifold
Figure 3   (Sheet 3)
Installation of Drain Manifold
Figure 3   (Sheet 4)