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 (2015) 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/P1, -1B70/P2, -1B70/75/P1, -1B70/75/P2, -1B74/75/P1, -1B74/75/P2
This Service Bulletin has been introduced in production to these GEnx-1B engines:
•
Genx-1B engines, serial numbers 956-662 and up.
These serial numbers are the best available data.
The old flowpath spacer P/N 2302M37P02 and old double hexagon head shear bolt (bolt) P/N J814P009A are affected by this Service Bulletin.
B.Description
This Service Bulletin introduces the new flowpath spacer P/N 2453M82G01, bolt P/N J814P023A, and flat washer P/N 133A1624P98.
C.Compliance
Category 7
GE recommends that you do this Service Bulletin at customers convenience.
NOTE:
This Service Bulletin can be done in shop.
D.Concurrent Requirements
None.
E.Reason
(1)Objective:
To introduce new part and reduce weight.
(2)Condition:
The current flowpath spacer is a single ring Ti-6-4 part. A new material configuration comprised of composite plus a metal load spreader has been identified as a weight reduction opportunity. Effect of continued use of current Ti-6-4 part is a weight detriment relative to a new composite design.
(3)Cause:
The flowpath spacer was originally designed as a metal single piece design. Composite was not identified at time of original design.
(4)Improvement:
The new flowpath spacer introduces a weight reduction for each engine.
(5)Substantiation:
Substantiation is by analysis and comparative analysis.
F.Approval
The data contained in this Service Bulletin has been reviewed by the appropriate governmental authority and the repair(s) and modification(s) herein comply with the applicable Aviation Regulations and are 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 6.7 lb (3.0 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)
GEnx-1B, Boeing 787 Aircraft Maintenance Manual (AMM)
NOTE:
The reference documents listed below are for the engine manufacturer's internal use only:
 
CID: 573976
 
BPP: 08-72-22-11
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)
GEnx-1B, Boeing 787 Aircraft Maintenance Manual (AMM)
K.Interchangeability
The old flowpath spacer P/N 2302M37P02 is fully interchangeable with the new flowpath spacer P/N 2453M82G01. However, installation of the new flowpath spacer P/N 2453M82G01 requires different bolts P/N J814P023A and flat washers P/N 133A1624P98.
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
 
2453M82G01
(1)
Spacer, Flowpath
74,710.00
(1)
5
 
J814P023A
(36)
Bolt, Double Hexagon Head Shear
15.75
(25)
5
 
133A1624P98
(36)
Washer, Flat
5.25
(50)
7
NOTE:
Prices are provided for planning purposes and are subject to change.
(2)Other Spare Parts:
None.
(3)Consumables:
 
Code Number
Description
 
C02-058
Compound, Thread Lubricating (lubricant)
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
 
2305M21G09/
G11
(X)
Fan Booster Assembly
2305M21G09/
G11
(X)
RM
-/-
 
2447M21G01
(X)
Fan Booster Assembly
2447M21G01
(X)
RM
-/-
 
.2453M82G01
01-060B, 72-22-00
02-060A, 72-22-00
(1)
Spacer, Flowpath (SIN 830AM)
.2302M37P02
01-060A, 72-22-00
02-060, 72-22-00
(1)
RE
5/B
 
.J814P023A
01-080A, 72-22-00
02-080A, 72-22-00
(36)
Bolt, Double Hexagon Head Shear
(SIN 830F1)
.J814P009A
01-080, 72-22-00
02-080, 72-22-00
(36)
RE
5/B
 
.133A1624P98
01-085, 72-22-00
02-085, 72-22-00
(36)
Washer, Flat
(SIN 830J1)
--
(-)
AD
5/-
Operation Codes
AD=Add
RE=Replace
RM=Remains
Change Code
5=Qualified interchangeability. Refer to paragraph 1.K., Interchangeability.
Support Code
B=Old parts will be supplied until all old parts are sold.
D.Parts Disposition
Use serviceable old parts at other engine locations.
E.Tooling - Price and Availability
None.
3.ACCOMPLISHMENT INSTRUCTIONS
A.Removal
(1)Removal instructions of the flowpath spacer (1, Figure 1) and bolt (2) have not changed. Refer to GEnx-1B EM, 72-22-00, DISASSEMBLY 001 or GEnx-1B, Boeing 787 AMM, G72-22-05, Removal, TASK DMC-B787-A-G72-22-05-00A-520A-A.
B.Installation
(1)Install the flowpath spacer (1, Figure 1) on the booster spool (01-090 or 02-090, 72-22-00) as follows:
WARNING:
REFER TO THE PRODUCT LABEL AND THE MANUFACTURERS (MATERIAL) SAFETY DATA SHEET (SDS) FOR INSTRUCTIONS ON THE HAZARDS, STORAGE, SAFE HANDLING AND PROPER USE OF THIS PRODUCT.
(a)Apply C02-058 lubricant to the threads and contact surfaces of the bolts (2) and flat washers (3).
WARNING:
ALWAYS USE APPROVED EQUIPMENT AND PROCEDURES TO LIFT PARTS. STAY OUT FROM BELOW LOADS. IF THE PARTS ACCIDENTALLY MOVE OR FALL, THEY CAN CAUSE AN INJURY OR KILL YOU.
(b)Lift the flowpath spacer (1) and do a visual inspection.
(c)Install eight equally spaced bolts (2) and flat washers (3) and tighten the bolts (2) in a criss-cross pattern with your hand.
(d)Install the other 28 bolts (2) and flat washers (3) in the open bolthole locations.
(e)Torque the bolts (2) in a criss-cross pattern to 106 to 124 lb in. (11.9 to 14.0 Nm).
(f)Make sure that the flowpath spacer (1) is fully against the booster spool (01-090 or 02-090) with a 0.008 inch (0.20 mm) shim.
Introduction of the New Flowpath Spacer
Figure 1   (Sheet 1)
Introduction of the New Flowpath Spacer
Figure 1   (Sheet 2)