CF6-80C2 Alert Service Bulletin No 73- A0401 R00

Revised: 08/14/2012 Issued: 08/14/2012

SB 73-A0401 R00 ENGINE FUEL AND CONTROL - General (73-00-00) - IDG Fuel-Oil Cooler 

Forward Flange Bracket and Spray Shield Replacement 

CF6-80C2 ALERT SERVICE BULLETIN - 73- A0401 R00 Revised: 

08/14/2012

SB 73-A0401 R00 ENGINE FUEL AND CONTROL - GENERAL 

(73-00-00) - IDG FUEL-OIL COOLER FORWARD FLANGE 

BRACKET AND SPRAY SHIELD REPLACEMENT 

Issued: 

08/14/2012

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 (2012) General Electric Company, U.S.A. 

 1. PLANNING INFORMATION 

 A. Effectivity 

 * * * CF6-80C2A1/A2/A3/A5/A5F/A8/B1/B1F/B2/B2F/B4/B4F/B6/B6F/B7F/D1F 

 The old bracket P/N 1321M88P001A and spray shield P/N 1606M57G01 or P/N 

1775M61G01 of the integrated drive generator (IDG) fuel-oil cooler are affected by 
this Alert Service Bulletin. 

 B. Description 

 This Alert Service Bulletin provides instructions to replace the bracket P/N 

1321M88P001A and spray shield P/N 1606M57G01 or P/N 1775M61G01 with a new 

bracket P/N 2021M83G01, as previously recommended by CF6-80C2 S/B 73-0242. 

 C. Compliance 

 Category 2 

 GE recommends that you do this Alert Service Bulletin as soon as possible without 

effect on revenue service but before February 7, 2013. If CF6-80C2 S/B 73-0242 was 

previously incorporated, then this Alert Service Bulletin does not need to be 

accomplished. 

 NOTE: This Alert Service Bulletin can be accomplished on wing or in shop. 

 This Alert Service Bulletin is offered to improve the reliability or performance of your 

GE product, or to help prevent the occurrence of the event or condition described in 

this Alert Service Bulletin. If the operator elects not to participate in the bulletin, that 

decision will be taken into consideration by GE in evaluating future product 

performance issues that may arise in the operator’s fleet. 

 D. Concurrent Requirements 

 None. 

 E. Reason 

 (1) Objective: 

 To improve maintainability and reduce significant events. 

 (2) Condition: 

 During engine operation, fuel leakage was reported on the IDG fuel-oil cooler 

forward flange, coming from the fuel-in tube. 

 (3) Cause: 

 Inappropriate reassembly of the IDG fuel-oil cooler forward flange hardware after 

maintenance activities has been identified as the cause of the fuel leakage on 

engines with a separate spray shield and bracket configuration. 

 (4) Improvement: 
 The new bracket integrates the function of both bracket and spray shield into one 

part, which simplifies installation of the IDG fuel-oil cooler forward flange 

hardware and eliminates the possibility of misassembly. 

 (5) Substantiation: 

 Substantiation is by comparative analysis. 

 F. Approval 

 This Alert Service Bulletin contains no modification information that revises the 

approved configuration and therefore does not require FAA approval. 

 G. Manpower 

 After you get access to the IDG fuel-oil cooler, you will need approximately 0.5 manhour for each engine or component. 

 H. Weight and Balance 

 Weight and balance are not changed. 

 I. References (Use the latest version of these documents) 

 Airbus A300-600 Aircraft Maintenance Manual (AMM) 

 Airbus A310-300 Aircraft Maintenance Manual (AMM) 

 Boeing 747-300/400 Aircraft Maintenance Manual (AMM) 

 Boeing 767-300/400 Aircraft Maintenance Manual (AMM) 

 McDonnell Douglas MD-11 Aircraft Maintenance Manual (AMM) 

 GEK 9250, Commerial Engine Standard Practices Manual (SPM) 

 GEK 92451, CF6-80C2 Engine Manual (EM) 

 GEK 92452-1, CF6-80C2A (PMC) Illustrated Parts Catalog (IPC) 

 GEK 92452-2, CF6-80C2B (PMC) Illustrated Parts Catalog (IPC) 

 GEK 92452-3, CF6-80C2D (FADEC) Illustrated Parts Catalog (IPC) 

 GEK 92452-4, CF6-80C2B (FADEC) Illustrated Parts Catalog (IPC) 

 GEK 92452-5, CF6-80C2A (FADEC) Illustrated Parts Catalog (IPC) 

 CF6-80C2 S/B 73-0242, FUEL AND CONTROL - (73-00-00) - Spray Shields and 
Support Bracket - Improvement 

 J. Publications Affected 

 None. 

 K. Interchangeability 

 Not applicable. 

 L. Software Accomplishment Summary 

 Not applicable. 

 2. MATERIAL INFORMATION 

 A. Material - Price and Availability 

 (1) Parts necessary to do this Alert 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 Quote (-) Quote 

MS9557-10 (4) Bolt, Machine Quote (-) Quote 

J219P05 (1) Gasket, Seal Quote (-) Quote 

For CF6-80C2B1F/B2F/B4F/B6F/B7F/A5F/D1F engines: 

2021M83G01 (1) Bracket Quote (-) Quote 

1977M27P001A (1) Bracket, Support Quote (-) Quote 

MS9557-10 (4) Bolt, Machine Quote (-) Quote 

MS9557-06 (3) Bolt, Machine Quote (-) Quote 

 

MS21043-4 (3) Nut, Selflocking 

Quote (-) Quote 

J219P05 (1) Gasket, Seal Quote (-) Quote 

 NOTE: Prices are provided for planning purposes and are subject to change. 

 (2) Other Spare Parts: 

 None. 

 (3) Consumables: 

Code Number Description 

C02-019 Oil, Engine Lubricating (lubricant) 
 B. Industry Support Information 

 GE Aviation will provide a 50 percent back-end parts credit for the brackets required 

to comply with this Alert Service Bulletin. Please e-file claims via Customer Web 

Center (CWC) or send claims to the address below via mail, fax, or e-mail. Please 

include the engine serial number, date of compliance, and a reference to CS-13766-

C4A and Alert Service Bulletin (CF6-80C2 S/B 73-A0401) with all claims. 

 CF6 Warranty/Guarantee Administration 

GE Aviation 

Product Support Operation 

One Neumann Way, Room 444 

Cincinnati, OH 45215-1988 

U.S.A. 

 OR 

 Fax: (513) 552-5081 

 OR 

 E-mail: FaxGEAEWarranty@fnl.ae.ge.com 

 C. Configuration Chart 

 None. 

 D. Parts Disposition 

 Discard old parts. 

 E. Tooling - Price and Availability 

 None. 

 3. ACCOMPLISHMENT INSTRUCTIONS 

 A. General 

 (1) Get access to the affected bracket and spray shield as follows: 

 (a) For on-wing replacement, refer to the applicable AMM instructions to open 

the engine fan cowl, core cowl, and thrust reverser. 

 (b) For in-shop replacement, refer to the CF6-80C2 EM, 72-00-05, 

DISASSEMBLY (EFFECT A, B, or C). 

 B. Removal and Installation for CF6-80C2A1/A2/A3/A5/A8/B1/B2/B4/B6 Engines 
 (1) Remove the old bracket (1, Figure 1, Sheet 1) and spray shield (2) as follows: 

 (a) Remove the bolts (3) and washers (4) that attach the spray shield (2) and 

bracket (1) to the IDG fuel-oil cooler. 

 (b) Remove the spray shield (2). 

 (c) Remove the bolts (5) and washers (6) that attach the bracket (1) to the IDG 

fuel-oil cooler support bracket. Keep the bolts (5) and washers (6) for 

reinstallation. 

 (d) Remove the bracket (1). 

 (e) Remove the seal gasket (05-120, 73-00-00) from the IDG fuel-oil cooler 

forward flange. 

 CAUTION: WHEN YOU INSTALL THE SEAL GASKET, MAKE SURE THAT 

THE PACKING IS NOT DAMAGED. IF YOU DO NOT OBEY THIS 

PRECAUTION, HIGH PRESSURE FUEL LEAKS CAN OCCUR. 

 (f) Do an inspection of the new seal gasket (05-120, 73-00-00) for damage. If 

nicks or tears are found, discard the seal gasket (05-120). 

 WARNING: REFER TO THE PRODUCT LABEL AND THE MANUFACTURER’S 

(MATERIAL) SAFETY DATA SHEET FOR INSTRUCTIONS ON THE 

HAZARDS, STORAGE, SAFE HANDLING AND PROPER USE OF 

THIS PRODUCT. 

 (g) Lubricate the seal gasket (05-120) with lubricant (C02-019) and install it on 

the IDG fuel-oil cooler forward flange. 

 (2) Install the new bracket (1, Figure 1, Sheet 2) as follows: 

 (a) Attach the bracket (1) to the IDG fuel-oil cooler with the new bolts (2). 

Torque the bolts (2) to 55-70 lb in. (6.2-7.9 N·m). 

 (b) Install the bracket (1) to the IDG fuel-oil cooler support bracket with bolts (3) 

and washers (4). Torque the bolts (3) to 55-70 lb in. (6.2-7.9 N·m). 

 (3) Do a leak check. Refer to paragraph 3.D., Leak Check. 

 C. Removal and Installation for CF6-80C2B1F/B2F/B4F/B6F/B7F/A5F/D1F Engines 

 (1) Remove the old bracket (1, Figure 2, Sheet 1) and spray shield (2) as follows: 

 (a) Remove the bolt (4), nut (5), and washer (6) that attach the loop clamp on the 

hydromechanical unit (HMU) fuel tube to the support bracket (3). Keep the 

bolt (4), nut (5), and washer (6) for reinstallation. 
 (b) For CF6-80C2B1F/B2F/B4F/B6F/B7F engine models only, remove the bolt 

(7), nut (8), and washer (9) that attach the loop clamp on the servo fuel heater 

oil tube to the angle bracket (10). 

 (c) For CF6-80C2B1F/B2F/B4F/B6F/B7F engine models only, remove the bolts 

(11) and nuts (12) that attach the angle bracket (10) to the support bracket (3).

 (d) Remove the bolts (13) that attach the bracket (1), spray shield (2), and support 

bracket (3) to the IDG fuel-oil cooler. 

 (e) Remove the spray shield (2) and support bracket (3). 

 (f) Remove the bolts (14) and washers (15) that attach the bracket (1) to the IDG 

fuel-oil cooler support bracket. 

 (g) Remove the bracket (1). 

 (h) Remove the seal gasket (07-073, 73-00-00) from the IDG fuel-oil cooler 

forward flange. 

 CAUTION: WHEN YOU INSTALL THE SEAL GASKET, MAKE SURE THAT 

THE PACKING IS NOT DAMAGED. IF YOU DO NOT OBEY THIS 

PRECAUTION, HIGH PRESSURE FUEL LEAKS CAN OCCUR. 

 (i) Do an inspection of the new seal gasket (07-073, 73-00-00) for damage. If 

nicks or tears are found, discard the seal gasket (07-073). 

 WARNING: REFER TO THE PRODUCT LABEL AND THE MANUFACTURER’S 

(MATERIAL) SAFETY DATA SHEET FOR INSTRUCTIONS ON THE 

HAZARDS, STORAGE, SAFE HANDLING AND PROPER USE OF 

THIS PRODUCT. 

 (j) Lubricate the seal gasket (07-073) with lubricant (C02-019) and install it on 

the IDG fuel-oil cooler forward flange. 

 (2) Install the new bracket (1, Figure 2, Sheet 2) as follows: 

 (a) Attach the new bracket (1) to the IDG fuel-oil cooler with the new bolts (9). 

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

 (b) Install the bracket (1) to the IDG fuel-oil cooler support bracket with the bolts 

(10) and washers (11). Torque the bolts (10) to 55-70 lb in. (6.2-7.9 N·m). 

 (c) Attach the new support bracket (2) to the bracket (1) with the new bolts (12) 

and nuts (13). Torque the bolts (12) to 55-70 lb in. (6.2-7.9 N·m). 

 (d) Attach the loop clamp on the HMU fuel tube to the support bracket (2) with 

the bolt (3), nut (4), and washer (5). Torque the nut (4) to 33-37 lb in. (3.7-4.2 
N·m). 

 (e) For CF6-80C2B1F/B2F/B4F/B6F/B7F engine models only, attach the loop 

clamp on the servo fuel heater oil tube to the support bracket (2) with the bolt 

(6), nut (7), and washer (8). Torque the nut (7) to 33-37 lb in. (3.7-4.2 N·m). 

 (3) Do a leak check. Refer to paragraph 3.D., Leak Check. 

 D. Leak Check 

 (1) Do an idle leak check to inspect the IDG fuel-oil cooler forward flange for fuel 

leaks as follows: 

 (a) For on-wing modification, refer to the applicable AMM. 

 (b) For in-shop modification, refer to the CF6-80C2 EM, 72-00-00, TESTING 

004, EFFECT C - ENGINE TESTING (for A FADEC, B FADEC, D 

FADEC) or 72-00-00, TESTING 004, EFFECT P - ENGINE TESTING (for 

A PMC and B PMC). 
IDG Fuel-Oil Cooler Spray Shield and Bracket Replacement 

Figure 1 (Sheet 1) 
IDG Fuel-Oil Cooler Spray Shield and Bracket Replacement 

Figure 1 (Sheet 2) 
IDG Fuel-Oil Cooler Spray Shield and Bracket Replacement 

Figure 2 (Sheet 1) 
IDG Fuel-Oil Cooler Spray Shield and Bracket Replacement 

Figure 2 (Sheet 2) 

GE PROPRIETARY INFORMATION - Subject to the restrictions on the media. 

Date Printed: GE PROPRIETARY INFORMATION - Not to be used, disclosed to others or 

reproduced without the express written consent of GE. Technical data is considered {Page}
{cd} ITAR and/or EAR controlled; transfer of this data to a Non-US Person, without USG 

authorization, is strictly prohibited.