# General Electric Alert Service Bulletin CF6-80C2: No revision named

- Rights: © General Electric Company. Filed by the FAA in regulations.gov docket FAA-2012-0817, the docket of AD 2013-08-20. Not covered by OpenAirDocs’ CC0 dedication.
- Document: [General Electric Alert Service Bulletin CF6-80C2](https://openairdocs.org/service-documents/ge/cf6-80c2.md)
- Title as filed: U.S. DOT/FAA - CF6-80C2 SB 73-0242 R1
- Pages: 25
- PDF: https://openairdocs.org/files/sha256/cc/1e/cc1ea68de1134490e61595f347a59428ceb3b902e6c51628aac972d7700a5037
- Page: https://openairdocs.org/service-documents/ge/cf6-80c2/file/cc1ea68de113

## Text

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FUEL AND CONTROL - (73-00-00) - Spray Shields and Support Bracket - Improvement
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. The information contained in this document may also be controlled by U.S. export
control laws. Unauthorized export or re-export is prohibited.
All technical documentation and information contained herein, with respect to assembly and dis-
assembly, cleaning, inspection methods and limits, repair methods and limits, operational limits,
life limits and the like, have been developed and approved for use with engines and parts that
have been manufactured and/or approved by GE and that have been maintained in accordance
with GE technical documentation and recommendations. GE has no contractual or legal obliga-
tion for, nor knowledge of, non-GE-approved parts and repairs. Accordingly, this document is not
intended to apply to non-GE-approved parts and repairs.
Copyright (2007) General Electric Company, U.S.A.
May 17, 1996 CF6-80C2 S/B 73-0242
Revision 01, March 29, 2007 PAGE 1 of 25

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FUEL AND CONTROL - (73-00-00) - Spray Shields and Support Bracket - Improvement
TRANSMITTAL INFORMATION
REVISION 1 TO SERVICE BULLETIN 73-0242
Revision 1 is issued to update the Effectivity and the Compliance paragraphs. Compliance of this
S/B is changed from Category 7 to Category 3. This S/B simplifies the complexity of the spray
shields which can be misassembled and result in a fuel leak.
The original was issued May 17, 1996. Revision bars in the left margin identify changes.
1. PLANNING INFORMATION
A. Effectivity
CF6-80C2A1/A2/A3/A5/A5F/A8/B1/B1F/B2/B2F/B4/B4F/B6/B6F/B7F/D1F
(1) The old integrated drive generator (IDG) cooler bracket 1321M88P001A, spray
shield bracket 1577M93G05, spray shields 1606M57G01, 1517M22G03/G06,
1883M59G01, 1582M85G01, and 1775M61G01, electrical lead PMUX
bracket 1383M66P001A, fuel supply angle bracket 1374M58G05, support
bracket 1885M52P001A, and 1468M19P001A installed on CF6-80C2 engines
or stocked as spares are affected.
(2) The new support bracket 1883M61G01 and electrical lead PMUX bracket
1883M63G01 will be introduced in production on engines 695-676 and higher.
The new support bracket 2021M83G01, and spray shield 1883M60G01 will
be introduced in production on the engines listed below:
695-676 and higher, 703-197 and higher, 704-334 thru -338, -340 thru
-378 and -380 and higher, 705-239 and higher.
The new spray shield 1883M59G01 will be introduced in production on the
engines listed below:
704-334 thru -338, -340 thru -363, 705-239 thru -243.
The new spray shield 1977M20G01 will be introduced in production on the
engines listed below:
695-676 and higher, 703-197 and higher, 704-364 thru -378, -380 and
higher, 705-244 and higher.
The new support bracket 1885M52P001A will be introduced in production
on the engines listed below:
704-334 thru -338, -340 thru -369, 705-239 thru -243.
The new support bracket 1977M27P001A will be introduced in production
on the engines listed below:
703-197 and higher, 704-370 thru -378, and -380 and higher, 705-244
and higher.
May 17, 1996 CF6-80C2 S/B 73-0242
Revision 01, March 29, 2007 PAGE 2
GE PROPRIETARY INFORMA TION - Subject to the restrictions on the cover or first page.

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FUEL AND CONTROL - (73-00-00) - Spray Shields and Support Bracket - Improvement
NOTE: Some full authority digital engine control (FADEC) engines have new
support bracket 1885M52P001A and spray shield 1883M59G01
installed. These parts can be removed and reworked or replaced.
Refer to paragraph 3.A.
(3) These serial numbers are the best available data.
B. Reason
(1) Objective:
Improve the maintainability of the IDG fuel-oil cooler. Improve the inspection
of the IDG fuel-oil cooler and flowmeter tubing swivel flanges.
(2) Condition:
(a) The IDG fuel-oil cooler is mounted to a bracket and spray shield with
the same bolts that attach the tubing four bolt swivel flange. On FADEC
engines, an additional bracket use these same bolts.
(b) The old spray shields covers the circumference of the tubing swivel
flanges attached to the fuel-oil cooler and the transmitter flowmeter. This
condition does not allow proper inspection of the swivel flange seating.
(c) The first new spray shield, at the forward end of the flowmeter, may
interfere with boltheads at the end of the flowmeter.
(d) The first new support bracket, at the forward end of the fuel-oil cooler,
does not have a customer interface hole required for EBU installation
on D1F and A5F engines.
(3) Cause:
(a) The multiple sheet metal stackup of three parts increases the difficulty in
alignment during bolt installation.
(b) Circumferential coverage of the old spray shields prevent mechanics
from properly inspecting the seating of the tubing swivel flanges.
(c) The boltheads on the flowmeter were not included on the digital mockup.
(d) Changes made by Rohr to attach a bracket to the new GE support
bracket were not coordinated with GE.
(4) Improvement:
(a) The new parts integrate the function of both the bracket and spray
shield into one part. On FADEC engines, the additional bracket also
integrates a small angle bracket and is bolted to the new bracket with
separate bolts and nuts.
(b) The lower portion of the spray shield is trimmed away to provide
improved inspection access to the swivel flange. This area of the shield
May 17, 1996 CF6-80C2 S/B 73-0242
Revision 01, March 29, 2007 PAGE 3
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FUEL AND CONTROL - (73-00-00) - Spray Shields and Support Bracket - Improvement
is unnecessary because the fuel streaks, from this area, do not go up
beyond the shield.
(c) Washers were added between the first new spray shield and the tube
flange to provide clearance between the spray shield and the boltheads.
The second new shield has a axial width of 0.12 inch (3.05 mm) less
than the first new shield. The first shield can be reworked to the second
shield dimensions. The shield at the forward end of the flowmeter is also
changed to maintain commonality.
(d) The second new support bracket has the customer interface hole
added. The first new bracket can be reworked to the second bracket
configuration by drilling a hole. The second new bracket is released to
all Boeing engines for commonality purposes.
(5) Substantiation:
(a) Structural integrity of the new support bracket is similar to 4 the old
cooler bracket. The only difference is that the new bracket is made of
two pieces with one welded side. The old bracket is made of one piece
with bent and welded sides. The old FADEC angle bracket is installed
using three bolts on the tube swivel flange. The new bracket is attached
to the new support bracket with three separate bolts and nuts. The new
configuration does not change the load path. A small angle bracket is
bolted to the old bracket but is now an integral part of the new bracket
and does not change the load path.
(b) The coverage area of the new spray shields has been verified visually
on a mockup engine and will cover the area sufficiently to prevent leaked
fuel steaks from going beyond the heat shield.
(c) A stackup analysis showed that the addition of the washer provides
adequate clearance between the first new spray shield and the
flowmeter boltheads. The second new spray shield is 0.12 inch
(3.05 mm) less in axial width than the first new shield and will prevent
interference without the washer required with the first new shield. The
reduction in width will not change the function of the shield.
(d) The second new bracket is the same as the first except for the addition
of a hole. This change does not affect the vibratory response of the
bracket.
May 17, 1996 CF6-80C2 S/B 73-0242
Revision 01, March 29, 2007 PAGE 4
GE PROPRIETARY INFORMA TION - Subject to the restrictions on the cover or first page.

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FUEL AND CONTROL - (73-00-00) - Spray Shields and Support Bracket - Improvement
C. Description
(1) The introduction of the new support bracket simplifies the installation of the
fuel-oil cooler. This improves the maintainability and eliminates the possibility
of misassembly.
(2) The new spray shields on the fuel-oil cooler and flowmeter provide better
spray protection and inspection of tubing swivel flange seating.
(3) Washers are required between the first spray shield and the tube swivel flange
to provide clearance between the spray shield and boltheads on the flowmeter.
The second new spray shield will eliminate the possible interference and
eliminate the need for the washers required with the first shield.
(4) The second new bracket is required to provide customer interface holes for
EBU installation on D1F and A5F engines. This new bracket is released to all
FADEC engines for commonality purposes.
D. Compliance
T echnical Compliance
Category 3
GE recommends that you do this Service Bulletin at the next shop visit of the engine.
NOTE 1: This Service Bulletin can be accomplished on wing or in shop.
NOTE 2: Do this Service Bulletin after CF6-80C2 S/B 73-0224.
E. Approval
The FAA has approved the technical content of this Service Bulletin.
F. Manpower
After you get access to the accessory drive area, you will need approximately
1 man-hour for each engine.
G. Material
Obtain the necessary parts from GE Aircraft Engines. Refer to paragraph
2.A., Material - Price and Availability.
H. Tooling
None.
I. Weight and Balance
Parts introduced by this Service Bulletin decreases weight by 0.31 lb (0.14 kg) at
approximate Engine Station 230 inches (5842 mm).
May 17, 1996 CF6-80C2 S/B 73-0242
Revision 01, March 29, 2007 PAGE 5
GE PROPRIETARY INFORMA TION - Subject to the restrictions on the cover or first page.

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FUEL AND CONTROL - (73-00-00) - Spray Shields and Support Bracket - Improvement
J. References (Use the latest version of these documents)
Commercial Engine Standard Practices Manual (SPM), GEK 9250
CF6-80C2 Engine Manual (EM), GEK 92451
CF6-80C2A (PMC) Series Illustrated Parts Catalog (IPC), GEK 92452-1
CF6-80C2A (FADEC) Series Illustrated Parts Catalog (IPC), GEK 92452-5
CF6-80C2B (PMC) Series Illustrated Parts Catalog (IPC), GEK 92452-2
CF6-80C2D (FADEC) Illustrated Parts Catalog (IPC), GEK 92452-3
CF6-80C2B (FADEC) Series Illustrated Parts Catalog (IPC), GEK 92452-4
CF6-80C2 S/B 73-0224 FUEL AND CONTROL - Flowmeter to IDG Cooler Fuel Tube
NOTE: The reference documents listed below are for the engine manufacturers
internal use only:
CID: 346865, 346997, 347204, 347224, 347254
K. Publications Affected
CF6-80C2 Engine Manual (EM), GEK 92451 72-00-05
CF6-80C2A (PMC) Series Illustrated PartsCatalog (IPC), GEK 92452-1
72-00-05, 73-00-00
CF6-80C2A (FADEC) Series Illustrated Parts Catalog (IPC), GEK 92452-5
72-00-05, 73-00-00
CF6-80C2B (PMC) Series Illustrated Parts Catalog (IPC), GEK 92452-2
72-00-05, 73-00-00
CF6-80C2D (FADEC) Illustrated Parts Catalog (IPC), GEK 92452-3
72-00-05, 73-00-00
CF6-80C2B (FADEC) Series Illustrated Parts Catalog (IPC), GEK 92452-4
72-00-05, 73-00-00, 73-11-20
L. Previous Modifications
None.
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
For CF6-80C2A1/A2/A3/A5/A8/B1/B2/B4/B6 engines:
2021M83G01 (1) Bracket, Support 177.50 (1) 30
MS9557-10 (8) Bolt, Machine *( - ) --
1883M60G01 (1) Shield, Spray 179.25 (1) 30
1977M20G01 (1) Shield, Spray 176.75 (1) 30
May 17, 1996 CF6-80C2 S/B 73-0242
Revision 01, March 29, 2007 PAGE 6
GE PROPRIETARY INFORMA TION - Subject to the restrictions on the cover or first page.

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FUEL AND CONTROL - (73-00-00) - Spray Shields and Support Bracket - Improvement
Part Number
Qty/
Eng Part Name
Unit
$ Price
Pkg
Qty
Lead
Time
Days
1883M61G01 (1) Bracket, Support 176.75 (1) 30
For CF6-80C2B1/B2/B4/B6 engines only:
1883M63G01 (1) Bracket, PMUX 99.25 (1) 30
For CF6-80C2B1F/B2F/B4F/B6F/B7F/A5F/D1F engines:
2021M83G01 (1) Bracket, Support 177.50 (1) 30
1977M27P001A (1) Bracket, Support 101.00 (1) 30
MS9557-10 (8) Bolt, Machine *( - ) --
MS9557-06 (3) Bolt, Machine *( - ) --
MS21043-4 (3) Nut, Self-locking * (-) --
1883M60G01 (1) Shield, Spray 179.25 (1) 30
1977M20G01 (2) Shield, Spray 176.75 (1) 30
*GE Aircraft engines does not sell these parts.
NOTE 1: Prices can change.
NOTE 2: When dealing directly with the supplier, make sure that the supplier has complied with
appropriate Airworthiness Authority Regulations.
(2) Other Spare Parts:
None.
(3) Consumables:
Code Number Discription
C04-003 Solvent, Acetone
C05-002 Ink, Marking (Dykem)
May 17, 1996 CF6-80C2 S/B 73-0242
Revision 01, March 29, 2007 PAGE 7
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FUEL AND CONTROL - (73-00-00) - Spray Shields and Support Bracket - Improvement
B. Configuration Chart
New
Part Number
Qty/
Eng Part Name
Old
Part Number/
IPC Location
Qty/
Eng
Op
Code
Chg/
Sprt
Code
(PRODUCTION OR FIELD)
9255M28G01/
G02/G03/G04/
G05/G06/G07/
G08/G09
(X) Accessory Drive
Assy CF6-80C2A1/
A2/A3/A5/A8/
B1/B2/B4/B6
9255M28G01/
G02/G03/G04/
G05/G06/G07/
G08/G09
(X) RM -/-
.2021M83G01 (1) Bracket - IDG Cooler
(Old name)
Bracket, Support
(New name)
.1321M88P001A
72-00-05-01-230
(1) RE 5/A
-- (-) Shield, Spray .1606M57G01
73-00-00-05-250A
(1) DE 5/A
.MS9557-10 (3) Bolt, Machine .MS9557-12
73-00-00-05-100
(3) RE 5/E
-- (-) Washer, Flat .AN960C416
73-00-00-05-110
(3) DE 5/E
.MS9557-10 (1) Bolt, Machine .MS9557-12
73-00-00-05-105A
(1) RE 5/E
-- (-) Washer, Flat .AN960C416
73-00-00-05-115
(1) DE 5/E
.1883M60G01 (1) Bracket, Spray Shield
(Old name)
Shield, Spray
(New name)
.1577M93G05
72-00-05-01-265
(1) RE 2/A
.MS9557-10 (1) Bolt, Machine .MS9557-12
73-00-00-05-130
(1) RE 5/E
-- (-) Washer, Flat .AN960C416
73-00-00-05-140
(1) DE 5/E
.MS9557-10 (3) Bolt, Machine .MS9557-12
73-00-00-05-135
(3) RE 5/E
-- (-) Washer, Flat .AN960C416
73-00-00-05-145
(3) DE 5/E
.1883M59G01 (1) Shield, Spray 1517M22G06
73-00-00-05-078A
(1) RE 2/A
.1977M20G01 (1) Shield, Spray 1883M59G01
S/B 73-0242
(1) RE 1/A
May 17, 1996 CF6-80C2 S/B 73-0242
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FUEL AND CONTROL - (73-00-00) - Spray Shields and Support Bracket - Improvement
New
Part Number
Qty/
Eng Part Name
Old
Part Number/
IPC Location
Qty/
Eng
Op
Code
Chg/
Sprt
Code
.1883M61G01 (1) Shield, Spray
(Old name)
Bracket, Support
(New name)
1582M85G01
73-00-00-05-064
(1) RE 5/A
9255M28G02/
G05/G06/G07
(X) Accessory Drive
Assy CF6-80C2B1
/B2/B4/B6
9255M28GO2/
G05/G06/G07
(X) RM -/-
.1883M63G01 (1) Bracket, PMUX Elec Lead .1383M66P001A
72-00-05-01-855
(1) RE 5/A
9255M79G01/
G02/G03/G04/
G05/G06
(X) Accessory Drive
Assy CF6-80C2
B1F/B2F/B4F/
B6F/B7F/A5F/D1F
9255M79G01/
G02/G03/G04/
G05/G06
(X) RM -/-
.2021M83G01 (1) Bracket - IDG Cooler
(Old name)
Bracket, Support
(New name)
.1321M88P001A
72-00-05-02-120
(1) RE 5/A
.1885M52P001A (1) Bracket, Angle -
Fuel Supply
(Old name)
Bracket, Support
(New name)
.1374M58G05
72-00-05-02-118A
(1) RE 5/A
-- (-) Shield, Spray .1775M61G01
73-00-00-07-255A
(1) DE 5/-
-- (-) Shield, Spray .1606M57G03
73-00-00-07-255B
(ALT) DE 5/-
.1883M60G01 (1) Bracket, Spray Shield
(Old name)
Shield, Spray
(New name)
.1577M93G05
73-00-00-07-170
(1) RE 2/A
.MS9557-10 (4) Bolt, Machine .MS9557-12
73-00-00-07-047
(4) RE 5/E
-- (-) Washer, Flat .AN960C416
73-00-00-07-053
(4) DE 5/E
.MS9557-10 (4) Bolt, Machine .MS9557-13
73-00-00-07-065
(4) RE 5/E
.1883M59G01 (2) Shield, Spray .1517M22G03
72-00-05-02-077
(2) RE 5/A
.1977M20G01 (2) Shield, Spray .1883M59G01
S/B 73-0242
(2) RW/
RE
5/A
May 17, 1996 CF6-80C2 S/B 73-0242
Revision 01, March 29, 2007 PAGE 9
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FUEL AND CONTROL - (73-00-00) - Spray Shields and Support Bracket - Improvement
New
Part Number
Qty/
Eng Part Name
Old
Part Number/
IPC Location
Qty/
Eng
Op
Code
Chg/
Sprt
Code
.AN960C416 (3) Washer, Flat -- (-) AD 5/-
-- (-) Washer, Flat AN960C416 (3) DE 5/E
.MS9557-06 (3) Bolt, Machine -- (-) AD 5/-
.MS21043-4 (3) Nut, Self-Locking -- (-) AD 5/-
9255M79G01/
G04/G05/G06/
(X) Accessory Drive
Assy CF6-80C2B1F/
B2F/B4F/B6F/B7F
9255M79G01/
G04/G05/G06
(X) RM -/-
.1977M27P001A (1) Bracket, Support .1885M52P001A
S/B 73-0242
(1) RW/
RE
2/B
-- (-) Bolt, Machine .MS9556-06
73-11-20-01-550
(2) DE 5/E
-- (-) Nut, Self-Locking .MS21043-3
73-11-20-01-560
(2) DE 5/E
-- (-) Bracket Angle, .1468M19P001A
73-11-20-01-570
(1) DE 5/A
9255M79G02/
G03
(X) Accessory Drive
Assy
CF6-80C2A5F/D1F
9255M79G02/
G03
(X) RE -/-
.1977M27P001A (1) Bracket, Support .1885M52P001A
S/B 73-0242
(1) RW/
RE
1/A
Change Codes
1 = One-way interchangeable.
2 = Two-way interchangeable.
5 = Qualified interchangeability - parts added or deleted.
5 = Qualified interchangeability - Refer to paragraph 2.C., Interchangeability
Spare Parts Support Codes
A = Old parts will no longer be supplied.
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.
Operation Codes
AD = Add
DE = Delete
RE = Replace
RM = Remains
RW = Rework
May 17, 1996 CF6-80C2 S/B 73-0242
Revision 01, March 29, 2007 PAGE 10
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FUEL AND CONTROL - (73-00-00) - Spray Shields and Support Bracket - Improvement
C. Interchangeability
New support bracket 2021M83G01 replaces old IDG cooler bracket 1321M88P001A
and spray shield 1606M57G01 or 1775M61G01 as a set. The new support bracket
requires shorter bolts and no washers.
On FADEC engines, new support bracket 1885M52P001A must be used with new
support bracket 2021M83G01 and is attached with three new bolts and nuts. On
Boeing applications, new bracket 1885M52P001A also replaces an angle bracket.
On Airbus and Douglas applications, new support bracket 1977M27P001A must
replace new bracket 1885M52P001A.
New spray shield 1883M60G01 is completely interchangeable with the old spray
shield. On PMC engines, new spray shield 1977M20G01 can replace old spray
1517M22G06 or new 1883M59G01 spray shield. On FADEC engines, new spray
shield 1883M59G01 must be used with new washers AN960C416, however, new
spray shield 1883M59G01 can be replaced with a new or reworked spray shield
1977M20G01 without washers. It is recommended that the old bolts and washers
used at the aft end of the fuel-oil cooler be changed to shorter bolts with no washers
so they are the same as those at the forward end.
On Boeing PMC engines, new electrical lead PMUX bracket 1883M63G01 must be
used with new spray shield 1883M59G01 or 1977M20G01 as a set.
D. Disposition of Parts
Rework spray shield 1883M59G01 and support bracket 1885M52P001A. Discard
old spray shields 1582M85G01, 1606M57G01, 1517M22G03/G06, 1775M61G01,
IDG fuel-oil cooler bracket 1321M88P001A, electrical lead PMUX bracket
1383M66P001A, spray shield bracket 1577M93G05, angle bracket 1468M19P001A,
and fuel supply angle bracket 1374M58G05.
3. ACCOMPLISHMENT INSTRUCTIONS
A. General
(1) For PMC engine models A1/A2/A3/A5/A8/B1/B2/B4/B6, remove and install
the IDG fuel oil cooler spray shields and bracket as follows:
(a) Remove four bolts (1, figure 1, sheet 1) and washers (2) from spray
shield bracket (3) and the cooler. Remove the spray shield.
(b) Remove four bolts (1) and washers (2) from spray shield (4) and IDG
cooler bracket (5). Remove the spray shield.
(c) Remove two bolts and washers (6) attaching bracket (5) to the cooler
support bracket. Save the bolts and washers for installation.
(d) Install new spray shield (7, figure 1, sheet 2) to the aft end of the cooler
with four new bolts (1). T orque the bolts to 55-70 lb in. (6.2-7.9 N·m).
May 17, 1996 CF6-80C2 S/B 73-0242
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FUEL AND CONTROL - (73-00-00) - Spray Shields and Support Bracket - Improvement
(e) Install four new bolts (1) to attach support bracket (8) to the cooler.
Install new support bracket (8) to the cooler support bracket with two
bolts and washers (6). T orque the bolts to 55-70 lb in. (6.2-7.9 N·m).
(2) For PMC engine models A1/A2/A3/A5/A8/B1/B2/B4/B6, remove and install
the transmitter flowmeter spray shields as follows:
(a) Remove four bolts and washers (9, figure 2, sheet 1) attaching spray
shield (10) to the aft end of the flowmeter and remove the spray shield.
Save the bolts and washers for installation.
(b) Install new spray shield (10) to the flowmeter with four bolts and washers
(9). T orque the bolts to 55-70 lb in. (6.2-7.9 N·m).
(c) For engine models A1/A2/A3/A5/A8 only , remove and install the forward
spray shield as follows:
1 Remove three bolts and washers (11, figure 2, sheet 2), bolt (12),
and angle bracket (13) attaching spray shield (14) to the forward end
of the flowmeter. Remove the spray shield and save the bolts and
washers for installation.
2 Install new spray shield (14) to the flowmeter with three bolts and
washer (11), bracket (13), and bolt (12). T orque the bolts to 55-70 lb
in. (6.2-7.9 N·m).
(d) For engine models B1/B2/B4/B6, remove and install the forward spray
shield as follows:
1 Remove two bolts and washers (15, figure 2, sheet 2), two bolts
(16), and electrical lead PMUX bracket (17) attaching spray shield
(14) to the forward end of the flowmeter. Remove the spray shield
and save the bolts and washers for installation.
2 Install new spray shield (14) to the flowmeter with two bolts and
washer (15), PMUX bracket (17), and two bolts (16). T orque the
bolts to 55-70 lb in. (6.2-7.9 N·m).
(3) For FADEC engine models B1F/B2F/B4F/B6F/B7F/A5F/D1F , remove and
install the IDG fuel-oil cooler spray shields and brackets as follows:
(a) Remove four bolts (18, figure 3, sheet 1), washers (19) attaching spray
shield bracket (20) to the cooler.
(b) Install new spray shield (20, figure 3, sheet 2) to the cooler with four new
bolts (18). T orque the bolts to 55-70 lb in. (6.2-7.9 N·m).
(c) Remove bolt, nut, and washer (21) attaching the loop clamp on the
HMU fuel tube to fuel supply angle bracket (22). Save the bolt, nut,
and washer.
(d) On engine models B1F/B2F/B4F/B6F/B7F only, remove bolt, nut, and
washer (23) attaching the loop clamp on the servo fuel heater oil tube
May 17, 1996 CF6-80C2 S/B 73-0242
Revision 01, March 29, 2007 PAGE 12
GE PROPRIETARY INFORMA TION - Subject to the restrictions on the cover or first page.

### Page 13

t
FUEL AND CONTROL - (73-00-00) - Spray Shields and Support Bracket - Improvement
to angle bracket (25). Remove two bolts and nuts (24) attaching angle
bracket (25) to bracket (22).
(e) Remove four bolts (26) attaching brackets (22 and 28) and spray shield
(27) to the cooler. Remove bracket (22) and shield (27).
(f) Remove two bolts and washers (29) attaching bracket (28) to the cooler
support bracket and remove bracket (28).
(g) Attach new support bracket (28) to cooler with four new bolts (26)
T orque bolts to 55-70 lb in. (6.2-7.9 N·m).
(h) Install new support bracket (28) to the cooler support bracket with two
bolts and washers (29). T orque the bolts to 55-70 lb in. (6.2-7.9 N·m).
(i) Attach new or reworked support bracket (22) to support bracket (28)
with three new bolts (30) and nuts (31). T orque the bolts to 55-70 lb
in. (6.2-7.9 N·m).
(j) Attach loop the clamp on the HMU fuel tube to support bracket (22) with
bolt, nut, and washer (21). T orque nuts to 33-37 lb in. (3.7-4.2 N·m).
(k) On engine models B1F/B2F/B4F/B6F/B7F only, attach the loop clamp
on the servo fuel heater oil tube to support bracket (22) with bolt, nut,
and washer (23). T orque the nuts to 33-37 lb in. (3.7-4.2 N·m).
(4) For FADEC engine models B1F/B2F/B4F/B6F/B7F/A5F/D1F , remove and
install the transmitter flowmeter spray shields as follows:
(a) Remove four bolts and washers (32, figure 4) attaching spray shields
(33) at both the forward and aft ends of the transmitter. Remove the
shields.
(b) Attach new or reworked spray shields (33) to both the forward and aft
ends of the cooler with four bolts and washers (33). T orque eight the
bolts to 55-70 lb in. (6.2-7.9 N·m).
(5) For FADEC engines that have support bracket 1885M52P001A and spray
shield 1883M59G01 installed, replace the bracket and shield as follows (5):
(a) On Boeing engines, remove bolt, nut, and washer (23, figure 5, detail B)
attaching the loop clamp to bracket (22).
(b) Remove bolt, nut, and washer (21) attaching loop clamp to bracket (22).
(c) Remove three bolts (30) and nuts (31) and remove bracket (22).
(d) Rework old bracket (22). Refer to paragraph 3.A.(6).
(e) Attach new or reworked bracket (22) to the support bracket with three
bolts (30) and nuts (31). T orque the nuts to 55-70 lb in. (6.2-7.9 N·m).
May 17, 1996 CF6-80C2 S/B 73-0242
Revision 01, March 29, 2007 PAGE 13
GE PROPRIETARY INFORMA TION - Subject to the restrictions on the cover or first page.

### Page 14

t
FUEL AND CONTROL - (73-00-00) - Spray Shields and Support Bracket - Improvement
(f) Attach loop clamp to bracket (22) with bolt, nut, and washer (21). T orque
the nut to 33-37 lb in. (3.7-4.2 N·m).
(g) On Boeing engines, attach the loop clamp to bracket (22) with bolt,
nut and washer (23, figure 5, detail B). T orque the nut to 33-37 lb in.
(3.7-4.2 N·m).
(h) Remove three bolts and washers (32), spray shield (33), and three
washers (34).
(i) Rework old spray shield (33). Refer to paragraph 3.A.(7).
(j) Attach new or reworked spray shield (33) to the flowmeter with three
bolts and washers (32). Do not install washers (34). T orque the bolts to
55-70 lb in. (6.2-7.9 N·m).
(6) Rework old support bracket 1885M52P001A as follows (figure 6):
WARNING: ACETONE IS FLAMMABLE AND TOXIC TO THE SKIN, EYES, AND
RESPIRATORY TRACT . USE SKIN AND EYE PROTECTION AND
PREVENT EXTENDED CONTACT . USE IN A WELL VENTILATED
AREA.
(a) Clean the area of the bracket to be reworked with acetone (C04-003) or
equivalent.
(b) Put Dykem marking ink (C05-002) on the area of the bracket to be
removed.
(c) M a r kt h ea r e ao ft h eb r a c k e tt ob er e m o v e dw i t has c r i b et o o l .
(d) Use a hand drill or equivalent. Drill one hole through bracket. Deburr
drilled area.
(e) Remove the marking ink with acetone (C04-003) or equivalent.
(f) Change the part number. Refer to paragraph 3.A.(8).
(7) Rework old spray shield 1883M59G01 as follows (figure 7):
WARNING: ACETONE IS FLAMMABLE AND TOXIC TO THE SKIN, EYES, AND
RESPIRATORY TRACT . USE SKIN AND EYE PROTECTION AND
PREVENT EXTENDED CONTACT . USE IN A WELL VENTILATED
AREA.
(a) Clean the areas of the shield to be reworked with acetone (C04-003) or
equivalent.
(b) Put Dykem marking ink (C05-002) on the areas of the shield to be
removed.
(c) Mark the areas of the shield to be removed with a scribe tool.
May 17, 1996 CF6-80C2 S/B 73-0242
Revision 01, March 29, 2007 PAGE 14
GE PROPRIETARY INFORMA TION - Subject to the restrictions on the cover or first page.

### Page 15

t
FUEL AND CONTROL - (73-00-00) - Spray Shields and Support Bracket - Improvement
(d) Remove material using a hand grinder or equivalent. Deburr machined
areas.
(e) Remove the marking ink with acetone (C04-003) or equivalent.
(f) Change the part number. Refer to paragraph 3.A.(8).
(8) Mark the reworked spray shield and support bracket as follows:
(a) Mark the shield or bracket to a depth of 0.0003-0.0015 inch (0.008-0.038
mm). Refer to the Standard Practice Manual (SPM) Commercial
Standard Practices Manual 70-16-03, ELECTROCHEMICAL ETCH
MARKING.
1 Make a line through the part number 1883M59G01 or
1885M52P001A. Make sure you can read the number.
2 Write the new number on the part:
Old part Number New Part Number
1883M59G01 1977M20G01
1885M52P001A 1977M27P001A
3 If the rework of the spray shield affects the directional markings,
remark the words and arrows as shown on figure 7.
May 17, 1996 CF6-80C2 S/B 73-0242
Revision 01, March 29, 2007 PAGE 15
GE PROPRIETARY INFORMA TION - Subject to the restrictions on the cover or first page.

### Page 16 (OCR)

CF6-80C2
GE Aircraft Engines
SERVICE BULLETIN
FUEL AND CONTROL - (73-00-00) - Spray Shields and Support Bracket - Improvement
SEE DETAIL A
DETAIL A
IDG FUEL-OIL  FORWARD
COOLER
LEGEND:
1. BOLT (QTY-8)
2. WASHER (QTY-8) DELETED
3. SPRAY SHIELD BRACKET
4. SPRAY SHIELD (DELETED)
5. IDG COOLER BRACKET
6. BOLT AND WASHER (QTY-2)
1136326-00
IDG Fuel-oil Cooler Spray Shield and Bracket Removal
Figure 1, ( Sheet 1 of 2)
May 17, 1996  CF6-80C2 S/B 73-0242
Revision 01, March 29, 2007  PAGE 16
GE PROPRIETARY INFORMATION - Subject to the restrictions on the cover or first page.

### Page 17 (OCR)

CF6-80C2
GE Aircraft Engines
SERVICE BULLETIN
FUEL AND CONTROL - (73-00-00) - Spray Shields and Support Bracket - Improvement
DETAIL B
FORWARD
IDG FUEL-OIL
COOLER
LEGEND:
1. BOLT (QTY-8)
OLD: MS9557-12
NEW: MS9557-10
6. BOLT AND WASHER (QTY-2)
7. SPRAY SHIELD
OLD: 1577M93G05
NEW: 1883M60G01
8. SUPPORT BRACKET
OLD: 1321M88P001A
NEW: 2021M83G01
1136328-00
IDG Fuel-oil Cooler Spray Shield and Bracket Installation
Figure 1, ( Sheet 2)
May 17, 1996  CF6-80C2 S/B 73-0242
Revision 01, March 29, 2007  PAGE 17
GE PROPRIETARY INFORMATION - Subject to the restrictions on the cover or first page.

### Page 18 (OCR)

CF6-80C2
GE Aircraft Engines
SERVICE BULLETIN
FUEL AND CONTROL - (73-00-00) - Spray Shields and Support Bracket - Improvement
SEE DETAIL A
DETAIL A
10 NEW  FORWARD
SEE DETAIL B
TRANSMITTER
FLOWMETER
LEGEND:
9. BOLT AND WASHER (QTY-4)
10. SPRAY SHIELD (OLD NAME),
SUPPORT BRACKET (NEW NAME) C
OLD: 1582M85G01
NEW: 1883M61G01
1136329-00
Transmitter Flowmeter Spray Shield and Bracket Replacement
Figure 2, ( Sheet 1 of 2)
May 17, 1996  CF6-80C2 S/B 73-0242
Revision 01, March 29, 2007  PAGE 18
GE PROPRIETARY INFORMATION - Subject to the restrictions on the cover or first page.

### Page 19 (OCR)

CF6-80C2
GE Aircraft Engines
SERVICE BULLETIN
FUEL AND CONTROL - (73-00-00) - Spray Shields and Support Bracket - Improvement
DETAIL B  14 OLD
CF6-80C2A1/A2/A3/A5/A8 ONLY  13
- 14 NEW
FORWARD
CF6-80C2B1/B2/B4/B6 ONLY
17 OLD
17 NEW
14 OLD
LEGEND:
11. BOLT AND WASHER (QTY-3)  16
12. BOLT (QTY-1)
13. ANGLE BRACKET
14. SPRAY SHIELD
OLD: 1517M22G06  14 NEW
NEW: 1977M20G01
15. BOLT AND WASHER (QTY-2)
16. BOLT (QTY-2)
17. ELECTRICAL LEAD PMUX BRACKET
OLD: 1383M66P001A
NEW: 1883M63G01  1136332-00
Transmitter Flowmeter Spray Shield and Bracket Replacement
Figure 2, ( Sheet 2)
May 17, 1996  CF6-80C2 S/B 73-0242
Revision 01, March 29, 2007  PAGE 19
GE PROPRIETARY INFORMATION - Subject to the restrictions on the cover or first page.

### Page 20 (OCR)

CF6-80C2
GE Aircraft Engines
SERVICE BULLETIN
FUEL AND CONTROL - (73-00-00) - Spray Shields and Support Bracket - Improvement
DETAIL A  21  HMU FUEL
TUBE
19
18
FORWARD
_LOOP
CLAMP
19  SEE DETAIL B
18
27
26
IDG FUEL-OIL  22
20  COOLER
28  29  21
LEGEND:  DETAIL B  LOOP
18. BOLT (QTY-4)  CF6-80C2B1F/B2F/B4F/B6F/B7F ONLY  CLAMP
19. WASHER (QTY-4) (DELETED)
20. SPRAY SHIELD BRACKET  25
21. BOLT, NUT AND WASHER
22. FUEL SUPPLY ANGLE BRACKET
23. BOLT, NUT AND WASHER
24. BOLT AND NUT (QTY-2) (DELETED)
25. ANGLE BRACKET (DELETED)  24
26. BOLT (QTY-4)
27. SPRAY SHIELD (DELETED)
28. IDG COOLER BRACKET
29. BOLT AND WASHER (QTY-2)
SERVO FUEL
HEATER OIL TUBE
24
1136333-00
IDG Fuel-oil Cooler Spray Shield and Bracket Removal
Figure 3, ( Sheet 1 of 2)
May 17, 1996  CF6-80C2 S/B 73-0242
Revision 01, March 29, 2007  PAGE 20
GE PROPRIETARY INFORMATION - Subject to the restrictions on the cover or first page.

### Page 21 (OCR)

CF6-80C2
GE Aircraft Engines
SERVICE BULLETIN
FUEL AND CONTROL - (73-00-00) - Spray Shields and Support Bracket - Improvement
DETAIL A
LOOP  HMU FUEL
FORWARD  CLAMP  TUBE
SEE DETAIL B
18  - 22
IDG FUEL-OIL
COOLER
20  26
LEGEND:
18. BOLT (QTY-4)  28
OLD: MS9557-12
NEW: MS9557-10  DETAIL B  ~29
20. SPRAY SHIELD  CF6-80C2B1F/B2F/B4F/B6F/B7F ONLY
OLD: 1577M93G05  LOOP
NEW: 1883M60G01  CLAMP
21. BOLT, NUT AND WASHER
22. SUPPORT BRACKET
OLD: 1374M58G05
NEW: 1977M27P001A
23. BOLT, NUT AND WASHER
26. BOLT (QTY-4)
OLD: MS9557-13
NEW: MS9557-10
28. SUPPORT BRACKET
OLD: 1321M88P001A
NEW: 2021M83G01
29. BOLT AND WASHER (QTY-2)  SERVO FUEL
30. BOLT MS9557-06 (QTY-3)  HEATER OIL TUBE
31. NUT MS21043-4 (QTY-3)
1136334-00
IDG Fuel-oil Cooler Spray Shield and Bracket Installation
Figure 3, ( Sheet 2)
May 17, 1996  CF6-80C2 S/B 73-0242
Revision 01, March 29, 2007  PAGE 21
GE PROPRIETARY INFORMATION - Subject to the restrictions on the cover or first page.

### Page 22 (OCR)

CF6-80C2
GE Aircraft Engines
SERVICE BULLETIN
FUEL AND CONTROL - (73-00-00) - Spray Shields and Support Bracket - Improvement
DETAIL A
→
33 NEW  FORWARD
33 OLD
TRANSMITTER  33 OLD
FLOWMETER
LEGEND:
32. BOLT AND WASHER (QTY-8)  33 NEW
33. SPRAY SHIELD (QTY-2)
OLD: 1517M22G03
NEW: 1977M20G01
1136338-00
Transmitter Flowmeter Spray Shield Replacement
Figure 4
May 17, 1996  CF6-80C2 S/B 73-0242
Revision 01, March 29, 2007  PAGE 22
GE PROPRIETARY INFORMATION - Subject to the restrictions on the cover or first page.

### Page 23 (OCR)

CF6-80C2
GE Aircraft Engines
SERVICE BULLETIN
FUEL AND CONTROL - (73-00-00) - Spray Shields and Support Bracket - Improvement
DETAIL A
HMU FUEL
21-  TUBE
LOOP  SEE DETAIL B
CLAMP  - 22
FORWARD
30
33
TRANSMITTER
FLOWMETER  34
DETAIL B
BOEING ENGINES ONLY  LOOP
CLAMP
LEGEND:
21. BOLT, NUT, AND WASHER
22. SUPPORT BRACKET
OLD: 1885M52P001A
NEW: 1977M27P001A
23. BOLT, NUT, AND WASHER
32. BOLT AND WASHER (QTY-3)
33. SPRAY SHIELD
OLD: 1883M59G01
NEW: 1977M20G01
34. WASHER (QTY-3) DELETED  22  SERVO FUEL
HEATER OIL TUBE
1136462-00
Transmitter Flowmeter Spray Shield and Bracket Replacement
Figure 5
May 17, 1996  CF6-80C2 S/B 73-0242
Revision 01, March 29, 2007  PAGE 23
GE PROPRIETARY INFORMATION - Subject to the restrictions on the cover or first page.

### Page 24 (OCR)

CF6-80C2
GE Aircraft Engines
SERVICE BULLETIN
FUEL AND CONTROL - (73-00-00) - Spray Shields and Support Bracket - Improvement
0.835-0.865 IN.
(21,209-21,971 MM)  0.535-0.565 IN
(13,589-14,351 MM)
0.213-0.224 IN. DIA THRU
(5,410-6,198 MM)
1136347-00
Support Bracket Rework
Figure 6
May 17, 1996  CF6-80C2 S/B 73-0242
Revision 01, March 29, 2007  PAGE 24
GE PROPRIETARY INFORMATION - Subject to the restrictions on the cover or first page.

### Page 25 (OCR)

CF6-80C2
GE Aircraft Engines
SERVICE BULLETIN
FUEL AND CONTROL - (73-00-00) - Spray Shields and Support Bracket - Improvement
0.07-0.11 IN.
(1,78-2,80 MM)
2 PLACES
0.50-0.52 IN  0.25-0.35 IN
(12,70-13,20 MM)  (6,35-8,90 MM
BEFORE REWORK  2 PLACES
0.38-0.40 IN.
(9,65-10,16 MM)
AFTER REWORK  0.65-0.75 IN.
(16,51-19,05 MM)
0.50-0.52 IN.  0.12-0.16 IN
(12,70-13,20 MM)  (3,05-4,06 MM)
BEFORE REWORK  2 PLACES
0.38-0.40 IN.
(9,65-10,16 MM)
AFTER REWORK
AFT
V
DWN
1136346-00
Spray Shield Rework
Figure 7
May 17, 1996  CF6-80C2 S/B 73-0242
Revision 01, March 29, 2007  PAGE 25
GE PROPRIETARY INFORMATION - Subject to the restrictions on the cover or first page.

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