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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 disassembly, 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 obligation 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

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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

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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

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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

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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

Technical 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

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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

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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

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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

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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

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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). Torque 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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(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). Torque 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). Torque 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). Torque 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). Torque 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). Torque 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

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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)

Torque 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). Torque 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). Torque 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). Torque 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). Torque 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). Torque 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). Torque the nuts to 55-70 lb in. (6.2-7.9 N·m).

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(f) Attach loop clamp to bracket (22) with bolt, nut, and washer (21). Torque

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). Torque 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). Torque 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) Mark the area of the bracket to be removed with a scribe tool.

(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.

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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.

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IDG Fuel-oil Cooler Spray Shield and Bracket Removal

Figure 1, ( Sheet 1 of 2 )

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IDG Fuel-oil Cooler Spray Shield and Bracket Installation

Figure 1, ( Sheet 2 )

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Transmitter Flowmeter Spray Shield and Bracket Replacement

Figure 2, ( Sheet 1 of 2 )

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Transmitter Flowmeter Spray Shield and Bracket Replacement

Figure 2, ( Sheet 2 )

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IDG Fuel-oil Cooler Spray Shield and Bracket Removal

Figure 3, ( Sheet 1 of 2 )

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IDG Fuel-oil Cooler Spray Shield and Bracket Installation

Figure 3, ( Sheet 2 )

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Transmitter Flowmeter Spray Shield Replacement

Figure 4

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Transmitter Flowmeter Spray Shield and Bracket Replacement

Figure 5

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Support Bracket Rework

Figure 6

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Spray Shield Rework

Figure 7

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