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Commercial Airplanes 767 Service Bulletin Number: 767-32A0227 Original Issue: April 25, 2012 Revision 1: September 13, 2012 ATA System: 3211 SUBJECT: LANDING GEAR - Main Gear - Pivot Joint Configuration Change Export of this technology is controlled under the United States Export Administration Regulations (EAR) (15 CFR 300-774). An export license may be required before it is used for development, production or use by foreign persons from specific countries. The controller of this data has the individual responsibility to abide by all export laws.
9E991ECCN:
BOEING PROPRIETARY, CONFIDENTIAL AND/OR TRADE SECRET Copyright © 2012 Boeing.
Unpublished Work. All Rights Reserved.
Treatment of this document and its content is governed by contract with Boeing. Rights to use this document are licensed on a per aircraft basis and such rights may not be transferable. For more information, contact The Boeing Company.
Boeing, the Boeing signature, the Boeing symbol, 707, 717, 727, 737, 747, 757, 767, 777, 787, Dreamliner™, BBJ, DC-8, DC-9, DC-10, KC-10, KDC-10, MD-10, MD-11, MD-80, MD-88, MD-90, P-8A, Poseidon and Boeing liveries are all trademarks owned by The Boeing Company; and no trademark license is granted in connection with this document unless provided in writing by Boeing. BOEING is a trademark of Boeing Management Company.
Original Issue: April 25, 2012 767-32A0227Revision 1: September 13, 2012 1 of 114
3.0
Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details.
Original Issue: April 25, 2012 767-32A0227Revision 1: September 13, 2012 2 of 114 BOEING SERVICE BULLETIN 767-32A0227
BLANK PAGE
Table of Contents
Revision Transmittal Sheet5
Summary7
1. PLANNING INFORMATION ........................................ 1 1 A. Effectivity ............................................... 1 1
1. Airplanes ............................................ 1 1
2. Spares Affected ........................................ 1 7 B. Concurrent Requirements ...................................... 1 7 C. Reason ................................................ 1 7 D. Description .............................................. 1 8 E. Compliance .............................................. 1 8 F. Approval ............................................... 2 4 G. Manpower .............................................. 2 5 H. Weight and Balance Changes .................................... 2 6 I. Electrical Load Data ......................................... 2 7 J. References .............................................. 2 7
1. Existing Data: ......................................... 2 7
2. Data Supplied with this Service Bulletin: ........................... 2 7
3. Installation Drawings Used in the Preparation of this Service Bulletin: ........... 2 8 K. Publications Affected ........................................ 2 8 L. Interchangeability and Intermixability of Parts ........................... 2 8 M. Software Accomplishment Summary ................................ 2 9
2. MATERIAL INFORMATION ........................................ 3 1 A. Material - Price and Availability ................................... 3 1 B. Industry Support Information .................................... 3 2 C. Parts Necessary for Each Airplane ................................. 3 2
1. Kits/Parts ............................................ 3 2
2. Parts and Materials Supplied by the Operator ........................ 3 2
3. Parts Modified and Reidentified ................................ 3 3
4. Parts Removed and Not Replaced .............................. 3 3 D. Parts Necessary to Change Spares ................................. 3 4 E. Special Tooling - Price and Availability ............................... 3 4 F. Special Tooling Necessary to do this Service Bulletin ....................... 3 5
3. ACCOMPLISHMENT INSTRUCTIONS .................................. 3 7 A. GENERAL INFORMATION ..................................... 3 7 B. WORK INSTRUCTIONS ....................................... 3 8 FIGURE 1: LEFT MLG PIVOT PIN INSPECTION [Group 1] ....................... 4 6 FIGURE 2: RIGHT MLG PIVOT PIN INSPECTION [Group 1] ...................... 4 8 FIGURE 3: LEFT MLG PIVOT JOINT BUSHING INSPECTION [Group 1] ................ 5 0 FIGURE 4: RIGHT MLG PIVOT JOINT BUSHING INSPECTION [Group 1] ............... 5 4 FIGURE 5: LEFT MLG TRUCK BEAM PIVOT LUG INSPECTION [Group 1] .............. 5 8 FIGURE 6: RIGHT MLG TRUCK BEAM PIVOT LUG INSPECTION [Group 1] ............. 6 1 FIGURE 7: MLG TRUCK BEAM BUSHING INSTALLATION [Group 1] ................. 6 4 FIGURE 8: LEFT MLG INNER CYLINDER PIVOT LUG INSPECTION [Group 1] ............ 6 8 FIGURE 9: RIGHT MLG INNER CYLINDER PIVOT LUG INSPECTION [Group 1] ........... 7 1 FIGURE 10: MLG INNER CYLINDER BUSHINGS INSTALLATION [Group 1] .............. 7 4 Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details.
Original Issue: April 25, 2012 767-32A0227Revision 1: September 13, 2012 3 of 114 BOEING SERVICE BULLETIN 767-32A0227
FIGURE 11: LEFT MLG TRUCK BEAM PIVOT LUG INSPECTION [Group 2] .............. 7 6 FIGURE 12: RIGHT MLG TRUCK BEAM PIVOT LUG INSPECTION [Group 2] ............. 8 0 FIGURE 13: MLG TRUCK BEAM BUSHING INSTALLATION [Group 2] ................. 8 4 FIGURE 14: LEFT MLG INNER CYLINDER PIVOT LUG INSPECTION [Group 2] ............ 9 1 FIGURE 15: RIGHT MLG INNER CYLINDER PIVOT LUG INSPECTION [Group 2] ........... 9 5 FIGURE 16: MLG INNER CYLINDER BUSHINGS INSTALLATION [Group 2] .............. 9 9 APPENDIX A: PART MARKING REIDENTIFICATION TABLE ....................... 1 0 6 APPENDIX B: TRUCK BEAM BUSHING AND INNER CYLINDER BUSHING APPLICABILITY BASED ON AIRPLANE MINOR MODEL ................................. 1 1 4 Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details.
Original Issue: April 25, 2012 767-32A0227Revision 1: September 13, 2012 4 of 114 BOEING SERVICE BULLETIN 767-32A0227
Commercial Airplanes 767 Service Bulletin Revision Transmittal SheetNumber: 767-32A0227Original Issue: April 25, 2012 Revision 1: September 13, 2012 ATA System: 3211 SUBJECT: LANDING GEAR - Main Gear - Pivot Joint Configuration Change This revision includes all pages of the service bulletin.
COMPLIANCE INFORMATION RELATED TO THIS REVISION No more work is necessary on the airplanes changed in accordance with the original issue of this service bulletin.
REASON FOR REVISION This revision is sent to change part numbers, add an optional material and add part numbers to an appendix.
These sections were changed:
1. In Background, added a table of sections affected.
2. In Paragraph 1.J.2.a., Data Supplied with this Service Bulletin, changed the Revision level of two drawing numbers.
3. In Paragraph 2.C.2., Parts and Materials Supplied by the Operator, added an optional material.
4. In Paragraph 3.B., Work Instructions, changed the part numbers in a Note.
5. In Paragraph 3.B., Work Instructions, added an optional material to Step 9 of Figure 13.
6. In Appendix A, added assembly part number rows to the Group 2 table.
Vertical lines are put on the left edge of each page, except in Paragraph 1.A., Effectivity, to show the location of important changes.
Pages with no vertical lines have no important changes.
REVISION HISTORY April 25, 2012Original Issue:
September 13, 2012Revision 1:
Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details.
Original Issue: April 25, 2012 767-32A0227Revision 1: September 13, 2012 5 of 114
Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details.
Original Issue: April 25, 2012 767-32A0227Revision 1: September 13, 2012 6 of 114 BOEING SERVICE BULLETIN 767-32A0227
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Commercial Airplanes 767 Service Bulletin SummaryNumber: 767-32A0227Original Issue: April 25, 2012 Revision 1: September 13, 2012 ATA System: 3211 SUBJECT: LANDING GEAR - Main Gear - Pivot Joint Configuration Change
CONCURRENT REQUIREMENTS None.
BACKGROUND Accomplishment of this service bulletin will change the configuration of the main landing gear (MLG) pivot joint to reduce the amount of heat generated in the pivot pin, truck beam lugs and the shock strut inner cylinder lugs during taxi, takeoff and landing. High levels of heat in the pivot joint can result in damage and cracks in the pivot pin, truck beam lugs and inner cylinder lugs. The cracks could lead to fracture of the pivot joint components which can result in the collapse of a MLG.
During MLG overhaul, pivot joint components have been found with cracks or heat damage eleven times on 767-400ER airplanes and 42 times on 767-200/-300/-300F airplanes. The earliest case of cracking was reported at approximately 7.8 years from delivery for the 767-400ER and 7 years from delivery for the 767-200/-300/-300F.
Heat damage and cracks were found at the pivot joint location which is caused by the truck pitching motion during normal airplane operations.
This service bulletin provides the instructions to install new bushings in the truck beam assemblies and shock strut inner cylinder assemblies of the MLGs to reduce friction in the pivot joint. Reduced friction in the pivot joint will lead to a lower amount of heat in the pivot joint which will prevent heat damage which can lead to cracks and/or fracture of the pivot joint components.
Boeing Service Related Problem (SRP) 767-SRP-32-0172 is related to this service bulletin.
Boeing Fleet Team Digest (FTD) 767 FTD 32-10001 is related to this service bulletin.
Boeing Service Bulletin (SB) 767-32A0176 is related to this service bulletin.
Boeing SB 767-32-0220 is related to this service bulletin.
Boeing SB 767-32A0199 is related to the pivot pin and bushings in this service bulletin.
Boeing SB 767-32A0202 is related to the pivot pin in this service bulletin.
This table is provided to operators for planning purposes only. Refer to the applicable sections for more information.
Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details.
Original Issue: April 25, 2012 767-32A0227Revision 1: September 13, 2012 7 of 114
ReferenceAffectedPlanning Data Paragraph 1.A.2., Spares AffectedYesSpares Affected Paragraph 1.E., Compliance and Paragraph
1.F., Approval YesAD Related Paragraph 1.H., Weight and Balance ChangesYesWeight and Balance Change Paragraph 1.I., Electrical Load DataNoElectrical Load Changed Paragraph 1.K., Publications AffectedYesPublications Affected Paragraph 1.K., Publications AffectedNoAirplane Flight Operations Affected (Flight Crew Operations Manual and/or FAA Approved Airplane Flight Manual) Paragraph 2.C.1., Kits/PartsYesKits/Parts Required Paragraph 2.C.2., Parts and Materials Supplied by the Operator YesOperator Supplied Parts/Material Paragraph 2.F., Special Tooling Necessary to do this Service Bulletin YesSpecial Tooling Required ACTION (PRR B12901-102S) Group 1:
Update maintenance program. Get access to the left and right MLG wheel wells. Remove the pivot pins of both MLGs. Do a detailed inspection of the pivot pins, truck beam pivot joint bushings and inner cylinder pivot joint bushings for heat damage and cracks. Remove the truck beam bushings and inner cylinder bushings and do a detailed inspection of the lugs for cracks, chrome plate distress and corrosion. Repair or replace any damaged parts. Install new truck beam bushings and inner cylinder bushings. Part mark the MLG components and assemblies. Lubricate the pivot joint.
Group 2:
Update maintenance program. Get access to the left and right MLG wheel wells. Remove the truck beams of both MLGs. Remove the truck beam bushings and inner cylinder bushings and do a detailed inspection of the lugs for cracks, corrosion, bronze transfer and heat damage. Repair or replace any damaged parts. Install new truck beam bushings and inner cylinder bushings. Part mark the MLG components and assemblies. Lubricate the pivot joint.
EFFECTIVITY 767-200, 767-300, 767-300F and 767-400ER Airplanes. Refer to Paragraph 1.A.1., Airplanes, for the list of affected airplanes.
COMPLIANCE The Federal Aviation Administration (FAA) will possibly release an Airworthiness Directive related to this service bulletin. The Airworthiness Directive will make the compliance tasks and times given in this service bulletin mandatory.
Refer to Paragraph 1.E., Compliance.
Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details.
Original Issue: April 25, 2012 767-32A0227Revision 1: September 13, 2012 8 of 114 BOEING SERVICE BULLETIN 767-32A0227
INDUSTRY SUPPORT INFORMATION Boeing warranty remedies are not available for the configuration changes, inspection and/or repair procedures given in this service bulletin.
MANPOWER Refer to Paragraph 1.G., Manpower.
MATERIAL INFORMATION Boeing Supplied Parts and/or Operator Supplied Parts/Materials.
Refer to Paragraph 2.A., Material - Price and Availability.
Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details.
Original Issue: April 25, 2012 767-32A0227Revision 1: September 13, 2012 9 of 114 BOEING SERVICE BULLETIN 767-32A0227
BOEING SERVICE BULLETIN 767-32A0227 GROUP 1: UPDATE MAINTENANCE PROGRAM. GET ACCESS TO THE LEFT AND RIGHT MLG WHEEL WELLS. REMOVE THE PIVOT PINS OF BOTH MLGS
DO A DETAILED INSPECTION OF THE PIVOT PINS, TRUCK BEAM PIVOT
JOINT BUSHINGS AND INNER CYLINDER PIVOT JOINT BUSHINGS FOR
HEAT DAMAGE AND REMOVE THE TRUCK BEAM BUSHINGS
AND INNER CY HINGS AND DO A DET ILED INSPECTION OF THE LUGS FOR ATE DISTRESS AND CORROSION.
REPAIR OR REPI ACE ANY DA AGED PARTS. INSTALL NEW TRUCK BEAM BUSHINGS AND INNER CYLINDER BUSHINGS. PART MARK THE MLG COMPONENTS AND ASSEMBLIES. LUBRICATE THE PIVOT JOINT.
GROUP 2: UPDATE MAINTENANCE PROGRAM. GET ACCESS TO THE LEFT AND RIGHT MLG WHEEL WELLS. REMOVE THE TRUCK BEAMS OF BOTH MLGS. REMOVE THE TRUCK BEAM BUSHINGS AND INNER CYLINDER
BUSHINGS AND DO A DETAILED INSPECTION OF THE LUGS FOR CRACKS, CORROSION, BRONZE TRANSFER AND HEAT DAMAGE.
INSTALL NEW TRUCK BEAM BUSHINGS AND INNER CYLINDER BUSHINGS. PART MARK THE MLG COMPONENTS AND ASSEMBLIES.
LUBRICATE THE PIVOT JOINT.
LEFT MAIN GEAR SHOWN,
RIGHT SIDE OPPOSITE Original Issue: April 25, 2012 Revision 1: September 13, 2012 PROPRIETARY - Copyright © Unpublished Export Controlled ECCN: 9E991 - BOEING 767-32A0227 Work - See page 1 for details. 10 of 114
Commercial Airplanes 767 Service Bulletin Number: 767-32A0227 Original Issue: April 25, 2012 Revision 1: September 13, 2012 ATA System: 3211 SUBJECT: LANDING GEAR - Main Gear - Pivot Joint Configuration Change
1. PLANNING INFORMATION A. Effectivity
1. Airplanes Refer to Service Bulletin Index Document D624T001 Part 3 for Airplane Variable Number, Line Number, and Serial Number data.
This service bulletin is for the airplane(s) shown below. An equivalent change is on subsequent production airplanes. Refer to PRR B12901-102S for data about this change.
DESCRIPTIONCONFIGURATIONGROUP 767-400ER Airplanes with line number 758-965.-1 767-200, 767-300 and 767-300F Airplanes with line number 1-1017.-2 Airplane Models:
767-200, 767-300, 767-300F, 767-400ER GroupVariable Number 2VA001 - VA020 2VA301 - VA315 2VA501 - VA530 2VA701 - VA719 2VA801 - VA810 2VB001 - VB002 2VB051 - VB055 2VB101 - VB125 2VB201 - VB202 Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details.
Original Issue: April 25, 2012 767-32A0227Revision 1: September 13, 2012 11 of 114
GroupVariable Number 2VB251 - VB253 2VB281 - VB284 2VB301 - VB302 2VB321 - VB332 2VB371 - VB373 2VB401 2VB441 - VB444 2VE001 - VE003 2VE021 - VE023 2VE041 - VE043 2VE061 - VE069 2VE083 - VE086 2VE101 - VE104 2VE116 - VE118 2VE121 - VE126 2VE141 - VE152 2VE171 - VE172 2VF001 - VF002 2VF041 - VF042 2VF051 2VF061 - VF062 2VF071 - VF072 2VF091 - VF093 2VF101 - VF102 2VF161 - VF162 2VF171 - VF172 2VF180 - VF184 2VF251 2VK001 - VK016 2VK021 - VK022 2VK031 - VK056 2VK081 - VK113 2VK131 - VK133 Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details.
Original Issue: April 25, 2012 767-32A0227Revision 1: September 13, 2012 12 of 114 BOEING SERVICE BULLETIN 767-32A0227