### Commercial **Airplanes** 

# 737

Service Bulletin **ALERT Number:**  **737-29A1119** Original Issue: August 04, 2015 ATA System: 2911 **SUBJECT:** HYDRAULIC POWER - Hydraulic Systems A and B - Wire Bundles and Hydraulic Tube

Clamp Installation 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. 9E991 ECCN: 

## BOEING PROPRIETARY, CONFIDENTIAL AND/OR TRADE SECRET Copyright © 2015 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 Unpublished Work.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, KC-46, KDC-10, MD-10, MD-11, MD-80, MD-88, MD-90, P-8, 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.

Original Issue: August 04, 2015 737-29A1119 1of53 2.0Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: August 04, 2015 737-29A1119 2of53 **BOEING SERVICE BULLETIN 737-29A1119 ALERT**  **ALERT**

BLANK PAGE**Table of Contents**

Summary

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 1. PLANNING INFORMATION

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 A. Effectivity

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 1. Airplanes

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 2. Spares Affected

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26 B. Concurrent Requirements

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26 C. Reason

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26 D. Description

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26 E. Compliance

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27 F. Approval

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28 G. Manpower

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28 H. Weight and Balance Changes

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29 I. Electrical Load Data

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29 J. References

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29 1. Existing Data:

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29 2. Data Supplied with this Service Bulletin:

. . . . . . . . . . . . . . . . . . . . . . . . . . . 30 3. Installation Drawings Used in the Preparation of this Service Bulletin:

. . . . . . . . . . . 30 K. Publications Affected

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30 L. Interchangeability and Intermixability of Parts

. . . . . . . . . . . . . . . . . . . . . . . . . . . 30 M. Software Accomplishment Summary

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30 2. MATERIAL INFORMATION

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31 A. Material - Price and Availability

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31 B. Industry Support Information

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32 C. Parts Necessary for Each Airplane

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32 1. Kits/Parts

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32 2. Parts and Materials Supplied by the Operator

. . . . . . . . . . . . . . . . . . . . . . . . 33 3. Parts Modified and Reidentified

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34 4. Parts Removed and Not Replaced

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34 D. Parts Necessary to Change Spares

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34 E. Special Tooling - Price and Availability

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34 F. Special Tooling Necessary to do this Service Bulletin

. . . . . . . . . . . . . . . . . . . . . . . 34 3. ACCOMPLISHMENT INSTRUCTIONS

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35 A. GENERAL INFORMATION

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35 B. WORK INSTRUCTIONS

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36 FIGURE 1: RIGHT MAIN WHEEL WELL - BELOW ELECTRIC MOTOR DRIVEN PUMP 'B' - HYDRAULIC

TUBE AND WIRE BUNDLES - INSPECTION[Group 1]

. . . . . . . . . . . . . . . . . . . 41 FIGURE 2: RIGHT MAIN WHEEL WELL - BELOW ELECTRIC MOTOR DRIVEN PUMP 'B' - HYDRAULIC

TUBE AND WIRE BUNDLES - INSPECTION[Group 2]

. . . . . . . . . . . . . . . . . . . 43 FIGURE 3: RIGHT MAIN WHEEL WELL - BELOW ELECTRIC MOTOR DRIVEN PUMP 'B' - CLAMPS -

INSTALLATION[Group 1]

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45 FIGURE 4: RIGHT MAIN WHEEL WELL - BELOW ELECTRIC MOTOR DRIVEN PUMP 'B' - CLAMPS -

INSTALLATION[Group 2]

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48 APPENDIX A: LOGIC DIAGRAM FOR PARAGRAPH 1.E. COMPLIANCE: TABLE 1: RIGHT MAIN WHEEL

WELL - BELOW ELECTRIC MOTOR DRIVEN PUMP 'B' - HYDRAULIC TUBE AND WIRE BUNDLES - INSPECTION AND CLAMPS INSTALLATION

. . . . . . . . . . . . . . . . . 51 APPENDIX B: PART DEMAND INTENT

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53

Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: August 04, 2015 737-29A1119 3of53 **BOEING SERVICE BULLETIN 737-29A1119 ALERT**  **ALERT**Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: August 04, 2015 737-29A1119 4of53 **BOEING SERVICE BULLETIN 737-29A1119 ALERT**  **ALERT**

BLANK PAGE

### Commercial **Airplanes** 

# 737

Service Bulletin **ALERT Summary**  **Number: 737-29A1119**  Original Issue: August 04, 2015 ATA System: 2911 **SUBJECT:** HYDRAULIC POWER - Hydraulic Systems A and B - Wire Bundles and Hydraulic Tube

Clamp Installation THIS BULLETIN IS SENT TO THE OPERATORS OF RECORD OF THE AIRPLANES SHOWN IN PARAGRAPH 1.A., EFFECTIVITY. IF AN AIRPLANE HAS BEEN LEASED OR SOLD, SEND THIS SERVICE BULLETIN TO THE NEW OPERATOR. IF APPLICABLE SPARES HAVE BEEN SOLD, SEND THIS SERVICE BULLETIN TO THE NEW OWNER. **CONCURRENT REQUIREMENTS** None. **BACKGROUND** This service bulletin is sent to prevent possible wire chafing damage to wire bundles W6128 and W8122 caused by insufficient separation from a hydraulic tube in the Main Landing Gear (MLG) wheel well. If this service bulletin is not done, wire chafing between the wire bundle and hydraulic tube could cause arcing and a loss of hydraulic fluid, which may result in a wheel well fire. Boeing has received a report of damage to wire W6128-0506-10. The wire had chafed and arced to an adjacent hydraulic tube located in the forward bulkhead of the MLG wheel well. The chafing and electrical arc created a small hole in the System B hydraulic tube and also caused damage to the wire bundle, which resulted in a ground fault detection on the System A Electrical Motor-Driven Pump (EMDP). The small hole led to a total loss of System B hydraulic fluid and the ground fault resulted in removal of power from the System A EMDP and illumination of the System A EMDP low power light. Boeing investigated this problem and found that there was not sufficient separation between the wire bundles W6128 and W8122 and the adjacent hydraulic tube at that location. As a result, Boeing is issuing this service bulletin to add clamps to separate the wire bundles from the hydraulic tube on airplanes from line number 1060 and on. Airplanes before line number 1060 do not need this change because of a configuration difference in the applicable area. This change will be incorporated on in-production airplanes starting at line number 5432. Boeing Service Related Problem (SRP)737NG-SRP-29-0112is related to this service bulletin. Boeing Fleet Team Digest (FTD)737NG FTD 29-15001is related to this service bulletin. This table is provided to operators for planning purposes only. Refer to the applicable sections for more information.
**Reference Affected**  **Planning Data** Paragraph 1.A.2., Spares Affected No Spares Affected

Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: August 04, 2015 737-29A1119 5of53**Reference Affected**  **Planning Data** Paragraph 1.E., Complianceand Paragraph 1.F., Approval No AD Related Paragraph 1.H., Weight and Balance Changes No Weight and Balance Change Paragraph 1.I., Electrical Load Data No Electrical Load Changed Paragraph 1.K., Publications Affected Yes Publications Affected Paragraph 1.K., Publications Affected No Airplane Flight Operations Affected (Flight CrewOperations Manual and/or FAA Approved Airplane Flight Manual) Paragraph 2.C.1., Kits/Parts Yes Kits/Parts Required Paragraph 2.C.2., Parts and Materials Supplied by the Operator Yes Operator Supplied Parts/Material Paragraph 2.F., Special Tooling Necessary to do this Service Bulletin No Special Tooling Required

**ACTION** In the right side of the Main Landing Gear wheel well, do a Detailed Inspection for chafing damage of wire bundles and a hydraulic tube. If the wire bundles are found to be damaged, repair as necessary. If the hydraulic tube is found to be damaged, replace or repair as necessary. Install clamps and an optional spacer between the wire bundle and hydraulic tube. Do a test of applicable electrical systems if the wire bundle was repaired. Service the hydraulic system if the hydraulic tube was replaced or repaired. **EFFECTIVITY** 737-600, -700, -700C, -800, -900 and -900ER Airplanes. Refer to Paragraph 1.A.1., Airplanes, for the list of affected airplane(s). **COMPLIANCE** Refer to Paragraph 1.E., Compliance

. **INDUSTRY SUPPORT INFORMATION** Boeing warranty remedies are not available for the configuration changes, inspection, and repair procedures given in this service bulletin. **MANPOWER** Refer to Paragraph 1.G., Manpower

. **MATERIAL INFORMATION** Boeing Supplied Kits/Parts. 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: August 04, 2015 737-29A1119 6of53 **BOEING SERVICE BULLETIN 737-29A1119 ALERT**  **ALERT**Operators are encouraged to complete the survey provided inAPPENDIX Bof this service bulletin to help Boeing

predict the quantity and timing of the Boeing Supplied Kits/Parts.

Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: August 04, 2015 737-29A1119 7of53 **BOEING SERVICE BULLETIN 737-29A1119 ALERT**  **ALERT**Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: August 04, 2015 737-29A1119 8of53 **BOEING SERVICE BULLETIN 737-29A1119 ALERT**  **ALERT**

BLANK PAGE

### Commercial **Airplanes** 

# 737

Service Bulletin **ALERT Number:**  **737-29A1119** Original Issue: August 04, 2015 ATA System: 2911 **SUBJECT:** HYDRAULIC POWER - Hydraulic Systems A and B - Wire Bundles and Hydraulic Tube

Clamp Installation THIS BULLETIN IS SENT TO THE OPERATORS OF RECORD OF THE AIRPLANES SHOWN IN PARAGRAPH 1.A., EFFECTIVITY. IF AN AIRPLANE HAS BEEN LEASED OR SOLD, SEND THIS SERVICE BULLETIN TO THE NEW OPERATOR. IF APPLICABLE SPARES HAVE BEEN SOLD, SEND THIS SERVICE BULLETIN TO THE NEW OWNER. **1. PLANNING INFORMATION A.**  **Effectivity** 1. Airplanes Refer toService Bulletin Index D6-19567Part 3 for Airplane Variable Number, Line Number, and Serial Number data. This service bulletin is applicable to 737-600, -700, -700C, -800, -900 and -900ER Airplanes, line numbers 1060 to 5431 in 2 Groups. The Variable Numbers and Group Information for the applicable airplanes is given below.
**DESCRIPTION CONFIGURATION**  **GROUP** 737-600/700/800/900 with Hydraulic Tube P/N 272A4451-56 adjacent to W6128 and W8122. - 1
737-600/700/800/900 with Hydraulic Tube P/N 272A4451-1044 adjacent to W6128 and W8122. - 2

Airplane Models: 737-600, 737-700, 737-700C, 737-800, 737-900, 737-900ER **Group Variable Number**  1 YA119 - YA199 1 YA211 1 YA221

Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: August 04, 2015 737-29A1119 9of53**Group Variable Number**  1 YA341 - YA345 1 YA357 1 YA367 1 YA371 - YA377 1 YA551 - YA552 1 YA630 - YA631 1 YA636 1 YA641 - YA642 1 YA648 - YA650 1 YA657 - YA659 1 YA666 - YA667 1 YA671 - YA672 1 YA691 1 YA707 - YA710 1 YA835 1 YA857 - YA862 1 YA967 - YA978 1 YB111 - YB132 1 YB156 - YB158 1 YB163 - YB164 1 YB184 1 YB206 - YB208 1 YB306 - YB310 1 YB371 - YB392 1 YB522 - YB526 1 YB541 - YB544 1 YB551 1 YB561 - YB598 1 YB601 - YB635 2 YB636 1 YB651 1 YB656 1 YB671 - YB672

Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: August 04, 2015 737-29A1119 10of53 **BOEING SERVICE BULLETIN 737-29A1119 ALERT**  **ALERT Group**  **Variable Number** 1 YB851 - YB863 1 YB871 - YB874 1 YB881 - YB893 1 YB901 - YB903 1 YB911 1 YB961 - YB974 2 YB975 2 YB981 1 YB986 - YB995 2 YB996 - YB998 1 YC029 - YC030 1 YC083 - YC084 1 YC091 - YC095 1 YC168 - YC170 1 YC176 - YC179 1 YC186 - YC190 1 YC201 - YC203 1 YC206 - YC207 1 YC304 - YC305 1 YC383 - YC387 1 YC393 - YC394 1 YC415 1 YC422 1 YC427 - YC428 1 YC436 - YC439 1 YC490 - YC499 1 YC525 - YC526 1 YC582 - YC583 1 YC654 - YC655 1 YC738 - YC750 1 YC881 - YC892 1 YC921 - YC922 1 YC949 - YC951

Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: August 04, 2015 737-29A1119 11of53 **BOEING SERVICE BULLETIN 737-29A1119 ALERT**  **ALERT Group**  **Variable Number** 1 YC977 - YC978 1 YD006 - YD007 1 YD054 - YD057 1 YD108 - YD110 2 YD111 - YD117 1 YD153 - YD159 1 YD208 - YD209 1 YD216 - YD219 1 YD252 - YD254 1 YD256 - YD257 1 YD261 1 YD317 - YD334 1 YD391 1 YD408 - YD410 1 YD412 - YD416 2 YD417 - YD422 1 YD481 - YD485 1 YD491 - YD499 1 YD507 - YD512 1 YD535 1 YD543 - YD547 1 YD561 - YD564 1 YD571 - YD572 1 YD591 - YD595 1 YD612 1 YD651 - YD655 1 YE204 - YE206 1 YE301 - YE305 1 YE321 - YE326 1 YE371 - YE383 1 YF001 - YF007 2 YF008 - YF011 1 YF021 - YF040

Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: August 04, 2015 737-29A1119 12of53 **BOEING SERVICE BULLETIN 737-29A1119 ALERT**  **ALERT Group**  **Variable Number** 2 YF041 - YF045 1 YF046 - YF047 2 YF048 - YF049 1 YF051 - YF060 2 YF061 - YF080 1 YF086 2 YF087 1 YF106 - YF107 1 YF111 - YF114 1 YF116 - YF117 2 YF118 - YF119 1 YF121 - YF124 2 YF125 - YF132 1 YF176 - YF178 1 YF191 - YF192 1 YF201 - YF251 2 YF252 - YF276 1 YF401 - YF402 2 YF431 - YF432 2 YF436 - YF437 1 YF441 2 YF442 1 YF451 - YF455 2 YF456 - YF460 1 YF501 - YF585 2 YF586 - YF599 2 YF601 - YF677 1 YF701 - YF706 2 YF707 1 YF801 - YF803 2 YF804 - YF805 1 YF831 - YF832 1 YF836 - YF837

Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: August 04, 2015 737-29A1119 13of53 **BOEING SERVICE BULLETIN 737-29A1119 ALERT**  **ALERT Group**  **Variable Number** 2 YF838 2 YF871 - YF872 1 YF901 - YF903 2 YF904 - YF905 1 YF921 - YF922 2 YF923 - YF928 2 YF951 - YF954 1 YG043 - YG044 1 YG083 - YG089 1 YG091 - YG099 1 YG101 - YG103 2 YG104 1 YG111 - YG114 1 YG116 - YG125 2 YG126 - YG143 1 YG201 - YG205 1 YG211 - YG214 1 YG221 - YG223 2 YG224 1 YG251 - YG252 1 YG505 - YG509 2 YG510 - YG514 1 YG701 1 YG711 1 YH001 - YH012 1 YH031 - YH049 2 YH050 1 YH051 - YH055 2 YH071 - YH080 1 YH101 - YH130 2 YH131 - YH132 1 YH201 - YH202 1 YH206 - YH207

Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: August 04, 2015 737-29A1119 14of53 **BOEING SERVICE BULLETIN 737-29A1119 ALERT**  **ALERT Group**  **Variable Number** 1 YH301 - YH305 2 YH306 1 YH321 - YH322 2 YH501 - YH542 2 YH551 - YH594 2 YH601 - YH606 2 YH611 - YH620 2 YH631 - YH632 2 YH636 - YH637 2 YH641 2 YH681 - YH682 2 YH701 - YH725 2 YH751 - YH754 2 YH801 - YH840 2 YH901 - YH905 2 YH911 - YH914 2 YH951 - YH952 1 YJ001 - YJ013 1 YJ021 1 YJ472 - YJ480 1 YJ514 - YJ517 1 YJ531 - YJ578 2 YJ579 1 YJ591 - YJ599 1 YJ631 - YJ632 1 YJ671 - YJ694 1 YJ801 - YJ867 1 YJ871 - YJ880 1 YJ901 - YJ904 1 YJ908 - YJ929 1 YJ931 - YJ937 1 YJ941 - YJ956 2 YJ961

Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: August 04, 2015 737-29A1119 15of53 **BOEING SERVICE BULLETIN 737-29A1119 ALERT**  **ALERT Group**  **Variable Number** 1 YJ976 - YJ977 1 YK001 - YK007 1 YK101 - YK104 1 YK111 - YK112 1 YK121 - YK122 1 YK131 - YK133 1 YK136 - YK139 1 YK141 - YK142 1 YK146 - YK148 1 YK151 - YK154 1 YK161 - YK167 1 YK171 1 YK176 - YK177 1 YK186 1 YK191 1 YK196 1 YK201 - YK202 1 YK301 - YK314 1 YK321 - YK340 1 YK361 - YK378 1 YK401 - YK406 1 YK426 - YK427 1 YK431 - YK450 1 YK456 - YK466 2 YK467 1 YK471 2 YK472 - YK473 1 YK476 1 YK480 - YK487 2 YK491 - YK493 1 YK495 - YK497 2 YK498 - YK499 1 YK511 - YK516

Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: August 04, 2015 737-29A1119 16of53 **BOEING SERVICE BULLETIN 737-29A1119 ALERT**  **ALERT Group**  **Variable Number** 1 YK521 - YK530 1 YK551 - YK571 1 YK576 - YK577 1 YK580 - YK585 1 YK601 - YK602 1 YK606 - YK607 1 YK611 - YK616 1 YK621 - YK634 1 YK641 - YK644 1 YK651 - YK665 1 YK671 - YK672 1 YK676 - YK677 1 YK681 - YK686 1 YK691 2 YK695 - YK699 1 YK701 - YK713 1 YK716 - YK719 1 YK721 - YK741 1 YK751 - YK770 1 YK776 - YK778 1 YK781 - YK782 2 YK783 - YK785 1 YK791 - YK792 1 YK796 - YK797 1 YK801 - YK899 1 YK901 - YK912 1 YK918 - YK919 1 YK921 - YK927 2 YK928 - YK929 1 YK941 - YK956 2 YK957 - YK960 1 YK961 - YK992 2 YK993 - YK999

Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: August 04, 2015 737-29A1119 17of53 **BOEING SERVICE BULLETIN 737-29A1119 ALERT**  **ALERT Group**  **Variable Number** 1 YL001 - YL005 1 YL011 - YL016 1 YL021 - YL024 1 YL051 - YL052 1 YL056 - YL057 1 YL061 1 YL066 - YL069 1 YL076 - YL077 1 YL101 - YL133 2 YL134 - YL137 1 YL201 - YL219 2 YL220 - YL237 2 YL241 - YL242 1 YL271 - YL272 1 YL281 - YL284 1 YL301 - YL303 1 YL311 - YL312 2 YL313 - YL314 1 YL316 - YL321 1 YL351 - YL353 1 YL371 - YL374 1 YL401 1 YL421 - YL429 1 YL431 - YL444 1 YL461 - YL478 1 YL501 - YL509 1 YL531 - YL534 1 YL541 - YL544 2 YL545 - YL551 1 YL561 - YL568 2 YL569 - YL579 1 YL591 - YL594 2 YL595 - YL598

Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: August 04, 2015 737-29A1119 18of53 **BOEING SERVICE BULLETIN 737-29A1119 ALERT**  **ALERT Group**  **Variable Number** 1 YL601 - YL606 1 YL611 - YL612 1 YL616 - YL617 1 YL621 1 YL626 1 YL631 - YL634 2 YL636 - YL637 1 YL661 - YL664 1 YL676 - YL681 2 YL682 - YL690 1 YL691 2 YL696 - YL697 1 YL701 - YL704 2 YL705 - YL707 1 YL731 1 YL751 - YL752 2 YL756 - YL757 1 YL761 - YL772 2 YL773 - YL780 2 YL796 - YL797 1 YL801 - YL809 2 YL810 - YL815 1 YL901 - YL910 1 YL921 - YL937 2 YL938 - YL940 1 YL951 - YL963 2 YL964 - YL968 1 YM101 - YM103 1 YM201 - YM242 2 YM243 - YM244 1 YM251 - YM299 1 YM301 - YM393 2 YM394 - YM399

Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: August 04, 2015 737-29A1119 19of53 **BOEING SERVICE BULLETIN 737-29A1119 ALERT**  **ALERT Group**  **Variable Number** 2 YM401 - YM415 1 YM471 1 YM481 - YM484 1 YM501 - YM515 1 YM521 - YM522 1 YM541 1 YM551 - YM553 1 YM571 - YM572 1 YM581 - YM582 1 YM591 - YM599 1 YM631 - YM634 1 YM641 - YM652 1 YM671 - YM674 1 YM691 - YM697 2 YM698 - YM699 1 YM701 - YM710 1 YM761 - YM763 2 YM764 - YM765 2 YM771 - YM779 1 YN001 - YN016 1 YN021 - YN024 1 YN061 1 YN071 - YN082 1 YN091 - YN092 1 YN101 - YN112 1 YN121 2 YN126 1 YN201 - YN202 1 YN211 - YN219 1 YN231 - YN235 2 YN236 1 YN261 2 YN501

Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: August 04, 2015 737-29A1119 20of53 **BOEING SERVICE BULLETIN 737-29A1119 ALERT**  **ALERT Group**  **Variable Number** 2 YN531 - YN534 2 YN551 - YN563 2 YN581 - YN585 2 YN591 - YN592 2 YN601 - YN606 2 YN651 - YN653 2 YN701 - YN702 2 YN741 - YN746 2 YN756 1 YQ001 - YQ003 1 YQ011 2 YQ012 - YQ021 1 YQ026 2 YQ027 - YQ029 2 YQ036 - YQ045 2 YQ201 - YQ207 2 YQ231 2 YQ241 - YQ251 2 YQ281 - YQ284 2 YQ291 - YQ296 2 YQ301 - YQ302 2 YQ321 - YQ324 2 YQ331 - YQ334 2 YQ346 - YQ347 2 YQ351 2 YQ401 - YQ403 2 YQ451 - YQ454 2 YQ456 2 YQ461 2 YQ471 2 YQ501 - YQ519 2 YR001 - YR041 2 YR051 - YR087

Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: August 04, 2015 737-29A1119 21of53 **BOEING SERVICE BULLETIN 737-29A1119 ALERT**  **ALERT Group**  **Variable Number** 2 YR091 - YR098 2 YR101 - YR105 2 YR111 - YR124 2 YR126 - YR144 2 YR166 - YR182 2 YR186 - YR198 2 YR201 - YR204 2 YR231 - YR294 2 YR296 - YR297 2 YR301 - YR334 2 YR338 - YR341 2 YR361 - YR366 2 YR371 - YR373 2 YR376 2 YR381 - YR382 2 YR386 - YR388 2 YR391 2 YR396 - YR398 2 YR401 - YR405 2 YR411 - YR413 2 YR416 - YR418 2 YR421 - YR424 2 YR426 - YR439 2 YR441 - YR455 2 YR457 - YR499 2 YR501 - YR506 2 YR511 - YR520 2 YR526 - YR544 2 YR546 - YR551 2 YR556 - YR562 2 YR571 - YR582 2 YR591 - YR592 2 YR601 - YR605

Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: August 04, 2015 737-29A1119 22of53 **BOEING SERVICE BULLETIN 737-29A1119 ALERT**  **ALERT Group**  **Variable Number** 2 YR616 - YR658 2 YR661 - YR663 2 YR671 - YR672 2 YR676 - YR678 2 YR681 2 YR701 - YR769 2 YR771 - YR799 2 YR801 - YR816 2 YR831 - YR838 2 YR841 - YR891 2 YR901 - YR903 2 YR931 - YR934 2 YR938 - YR944 2 YR951 - YR970 2 YR981 - YR996 2 YS001 - YS002 2 YS006 - YS009 2 YS031 - YS032 2 YS051 - YS073 2 YS101 - YS120 2 YS126 - YS135 2 YS151 - YS160 2 YS166 - YS194 2 YS196 - YS197 2 YS201 - YS209 2 YS221 - YS225 2 YS231 - YS236 2 YS271 - YS286 2 YS301 - YS333 2 YS351 - YS365 2 YS371 - YS374 2 YS381 - YS383 2 YS401

Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: August 04, 2015 737-29A1119 23of53 **BOEING SERVICE BULLETIN 737-29A1119 ALERT**  **ALERT Group**  **Variable Number** 2 YS451 2 YS456 - YS457 2 YS462 2 YS467 2 YS501 - YS502 2 YS506 2 YS511 - YS513 2 YS551 - YS553 2 YS561 - YS578 2 YS581 - YS595 2 YS601 - YS690 2 YS701 - YS708 2 YS721 - YS755 2 YS761 - YS762 2 YS771 - YS780 2 YS806 - YS810 2 YS816 - YS818 2 YS823 - YS825 2 YS851 - YS860 2 YS876 2 YS881 - YS883 2 YS901 - YS909 2 YS911 - YS925 2 YS961 - YS965 2 YS981 - YS983 2 YS991 - YS996 2 YT001 - YT004 2 YT006 2 YT026 - YT027 2 YT031 - YT032 2 YT036 - YT038 2 YT061 - YT068 2 YT101 - YT109

Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: August 04, 2015 737-29A1119 24of53 **BOEING SERVICE BULLETIN 737-29A1119 ALERT**  **ALERT Group**  **Variable Number** 2 YT126 - YT129 2 YT136 - YT138 2 YT176 - YT181 2 YT196 - YT197 2 YT201 2 YT206 - YT207 2 YT211 - YT212 2 YT251 - YT270 2 YT301 - YT303 2 YT306 - YT307 2 YT311 - YT312 2 YT321 - YT323 2 YT401 - YT403 2 YT411 - YT415 2 YT427 2 YT461 - YT471 2 YT491 - YT492 2 YT501 2 YT551 2 YT556 2 YT561 2 YT601 - YT606 2 YT761 - YT776 2 YT796 2 YT801 - YT803 2 YT811 2 YT831 2 YT891 - YT894 2 YT901 - YT906 2 YU001 - YU042 2 YU201 - YU211 2 YV101 - YV104

Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: August 04, 2015 737-29A1119 25of53 **BOEING SERVICE BULLETIN 737-29A1119 ALERT**  **ALERT**2. Spares Affected None. **B. Concurrent Requirements**  None. **C. Reason**  This service bulletin is sent to prevent possible wire chafing damage to wire bundles W6128 and W8122 caused by insufficient separation from a hydraulic tube in the Main Landing Gear (MLG) wheel well. If this service bulletin is not done, wire chafing between the wire bundle and hydraulic tube could cause arcing and a loss of hydraulic fluid, which may result in a wheel well fire. Boeing has received a report of damage to wire W6128-0506-10. The wire had chafed and arced to an adjacent hydraulic tube located in the forward bulkhead of the MLG wheel well. The chafing and electrical arc created a small hole in the System B hydraulic tube and also caused damage to the wire bundle, which resulted in a ground fault detection on the System A Electrical Motor-Driven Pump (EMDP). The small hole led to a total loss of System B hydraulic fluid and the ground fault resulted in removal of power from the System A EMDP and illumination of the System A EMDP low power light. Boeing investigated this problem and found that there was not sufficient separation between the wire bundles W6128 and W8122 and the adjacent hydraulic tube at that location. As a result, Boeing is issuing this service bulletin to add clamps to separate the wire bundles from the hydraulic tube on airplanes from line number 1060 and on. Airplanes before line number 1060 do not need this change because of a configuration difference in the applicable area. This change will be incorporated on in-production airplanes starting at line number 5432. Boeing Service Related Problem (SRP)737NG-SRP-29-0112is related to this service bulletin. Boeing Fleet Team Digest (FTD)737NG FTD 29-15001is related to this service bulletin. **D. Description**  In the right side of the Main Landing Gear wheel well, do a Detailed Inspection for chafing damage of wire bundles and a hydraulic tube. If the wire bundles are found to be damaged, repair as necessary. If the hydraulic tube is found to be damaged, replace or repair as necessary. Install clamps and an optional spacer between the wire bundle and hydraulic tube. Service the hydraulic system if the hydraulic tube was replaced or repaired. Do a test of applicable electrical systems if the wire bundle was repaired. The work in this service bulletin is done in the maintenance zone(s) given below. **Group 1:**
**Affected Maintenance Zones Zone**  **Model** 134 737-600, 737-700, 737-700C, 737-800, 737-900, 737-900ER

Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: August 04, 2015 737-29A1119 26of53 **BOEING SERVICE BULLETIN 737-29A1119 ALERT**  **ALERT Group 2:** 
**Affected Maintenance Zones Zone**  **Model** 134 737-700, 737-700C, 737-800, 737-900ER
**E. Compliance**  Boeing recommends that the inspection, change and repair given in this service bulletin be done within 24 months of the service bulletin release date. Do the required actions in accordance with Paragraph 3. Accomplishment Instructions. **Table 1:RIGHT MAIN WHEEL WELL - BELOW ELECTRIC MOTOR DRIVEN PUMP 'B' - HYDRAULIC TUBE AND WIRE BUNDLES - INSPECTION AND CLAMPS INSTALLATION**  **Repeat Interval (Not to Exceed)**  **Compliance Time Action**  **Condition**

- Within 24 monthsafter the original issue date of this service bulletin.Do PART 1: WIRE BUNDLES AND HYDRAULICTUBE - DETAILED INSPECTION All Airplanes

- Before further flight. CONDITION 1 (ACTION1): Repair the wire bundles. CONDITION 1: DAMAGE TO WIRE BUNDLESFOUND DURING DETAILED INSPECTION

- Before further flight. CONDITION 1 (ACTION 2): Do PART 2: WIREBUNDLES AND HYDRAULIC TUBE - CLAMPS INSTALLATION

- Before further flight. CONDITION 2 (ACTION 1): Repair or replace the hydraulic tube. CONDITION 2: DAMAGE TO HYDRAULIC TUBEFOUND DURING DETAILED INSPECTION

- Before further flight. CONDITION 2 (ACTION 2): Do PART 2: WIREBUNDLES AND HYDRAULIC TUBE - CLAMPS INSTALLATION

Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: August 04, 2015 737-29A1119 27of53 **BOEING SERVICE BULLETIN 737-29A1119 ALERT**  **ALERT Table 1:RIGHT MAIN WHEEL WELL - BELOW ELECTRIC MOTOR DRIVEN PUMP 'B' - HYDRAULIC** 

**TUBE AND WIRE BUNDLES - INSPECTION AND CLAMPS INSTALLATION Repeat Interval**  **(Not to Exceed) Compliance Time**  **Action Condition** 

- Before further flight. CONDITION 3 (ACTION1): Repair the wire bundles. CONDITION 3: DAMAGE TO WIRE BUNDLES AND HYDRAULIC TUBEFOUND DURING DETAILED INSPECTION - Before further flight. CONDITION 3 (ACTION 2): Repair or replace the hydraulic tube.

- Before further flight. CONDITION 3 (ACTION 3): Do PART 2: WIREBUNDLES AND HYDRAULIC TUBE - CLAMPS INSTALLATION

- Before further flight.Do PART 2: WIRE BUNDLES AND HYDRAULICTUBE - CLAMPS INSTALLATIONCONDITION 4: NO DAMAGE IS FOUND DURING DETAILED INSPECTION
A logic diagram showing compliance tasks and compliance times is included as an aid inAPPENDIX A

. **F. Approval**  This service bulletin was examined by the Federal Aviation Administration (FAA). The changes specified in this service bulletin comply with the applicable regulations and are FAA approved, as well as European Aviation Safety Agency (EASA)/Joint Aviation Authorities (JAA) approved for all EASA/JAA approved airplanes listed in the service bulletin effectivity. This service bulletin and its approval were based on the airplane in its original Boeing delivery configuration or as modified by other approved Boeing changes. For 737-700C and BBJ models that have APB winglets installed by STC number ST00830SE, the operator is responsible for obtaining appropriate regulatory agency approval before incorporating this service bulletin if the bulletin is in the area affected by blended winglets. If an airplane has a non-Boeing modification or repair that affects a component or system also affected by this service bulletin, the operator is responsible for obtaining appropriate regulatory agency approval before incorporating this service bulletin. **G. Manpower**  The table below shows an estimate of the task hours necessary to do this inspection/repair and change for each airplane. This estimate is for direct labor only, done by an experienced crew. Adjust the estimate with operator task hour data if necessary. The estimate does not include lost time. These are some examples of lost time:

• Time to adjust to the workplace

• Time to schedule the work

Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: August 04, 2015 737-29A1119 28of53 **BOEING SERVICE BULLETIN 737-29A1119 ALERT**  **ALERT**• Time to inspect the work

• Time to cure the materials

• Time to make the parts

• Time to find the tools.
**Group 1: Elapsed Hours**  **Task Hours Number of Persons**  **Task** 0.50 0.50 1 Open Access 0.25 0.25 1 FIGURE 1 0.35 0.35 1 FIGURE 3 0.50 0.50 1 Close Access 1.60 1.60 TOTAL FOR EACH AIRPLANE(a) (a) Estimate assumes no damage is found on wire bundles or hydraulic tube. If damage is found, more time is necessary. **Group 2: Elapsed Hours**  **Task Hours Number of Persons**  **Task** 0.50 0.50 1 Open Access 0.25 0.25 1 FIGURE 2 0.35 0.35 1 FIGURE 4 0.50 0.50 1 Close Access 1.60 1.60 TOTAL FOR EACH AIRPLANE(a) (a) Estimate assumes no damage is found on wire bundles or hydraulic tube. If damage is found, more time is necessary.
**H. Weight and Balance Changes**  None. **I. Electrical Load Data**  Not changed. **J. References**  1. Existing Data:

a. Boeing Service Related Problem (SRP)737NG-SRP-29-0112 b. Service Bulletin Index D6-19567

c. Standard Overhaul Practices Manual (SOPM)20-50-01

Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: August 04, 2015 737-29A1119 29of53 **BOEING SERVICE BULLETIN 737-29A1119 ALERT**  **ALERT**d. Standard Wiring Practices Manual (SWPM)20-10-11,20-10-12,20-10-13,20-10-19

e. 737-600/700/800/900 Aircraft Maintenance Manual (AMM) 12-12-00,20-10-51,24-22-00, 27-09-31,27-09-61,27-61-12,27-81-00,28-21-00,29-09-00,29-11-00,29-11-21,29-21-00, 29-22-00,29-22-31,29-32-00,31-51-00,32-00-01,33-42-00 f. 737-600/700/800/900 Wiring Diagram Manual (WDM)27-23-11,27-23-14,27-61-11,27-81-51, 28-21-11,29-11-12,29-23-11,29-25-11,29-34-11,31-31-15,31-53-11,33-42-11 g. 737NG Fleet Team Digest (FTD)29-15001 2. Data Supplied with this Service Bulletin: None. 3. Installation Drawings Used in the Preparation of this Service Bulletin:
**Title Drawing Number**  WIRE BUNDLE INSTL - MAIN WHEEL WELL FWD BULKHEAD STA 663.75 288A4434 HYDRAULIC PLUMBING INSTL - MAIN WHEEL WELL, REAR SPAR 272A4401
The table above lists applicable drawings used to prepare this service bulletin. The drawings are not necessary to make the specified changes, and are not supplied with this service bulletin. The drawings may not be applicable to all airplane configurations or operators. **K. Publications Affected**  1. Publications: **Chapter-Section Publication**  29-11 737 Aircraft Maintenance Manual 29-11 737 Illustrated Parts Catalog
2. Damage Tolerance Based Structural Inspections: Boeing has evaluated the repairs and/or changes in this service bulletin for effects on Fatigue Critical Structure (FCS) and for changes to Damage Tolerance Inspections (DTI) required in the Maintenance Program. This service bulletin does not affect FCS, therefore DTIs are not necessary. **L. Interchangeability and Intermixability of Parts**  Accomplishment of this service bulletin does not affect interchangeability or intermixability of parts. **M. Software Accomplishment Summary**  Not affected.

Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: August 04, 2015 737-29A1119 30of53 **BOEING SERVICE BULLETIN 737-29A1119 ALERT**  **ALERT 2. MATERIAL INFORMATION**  **A. Material - Price and Availability**  Boeing can supply the kit shown inParagraph 2.C., Parts Necessary for Each Airplane. Operators are encouraged to share schedule requirements with Boeing for incorporation of the service bulletin. The kits are subject to the terms and conditions of the Boeing standard purchase order acknowledgment. Prices are in United States Dollars. Terms: Net 30 days. Reference this service bulletin and submit your purchase order by one of these methods: 1. Order on-line via ATA Spec 2000 or The Boeing PART Page 2. Fax to (206) 662-7145 **REFER TO THE BOEING PART PAGE ON MYBOEINGFLEET.COM OR CONTACT FIRST RESPONDER AT FR@BOEING.COM FOR THE LATEST REORDER LEAD TIME (ROLT) AND PRICE INFORMATION** 
**Unit Price as of the original issue** **date of this Ser vice Bulletin (US**  **Dollars) ROLT as of the**  **original issue date of this Ser** **vice Bulletin (Cal endar Days)**  **QTY Date**  **Name Kit Number** 

9.00 225 1 September 15, 2015Top Kit - Wire Bundle/Hydraulic Tube Clamp Installation 002A0014-116
25 December 10, 2015 25 December 17, 2015 25 January 4, 2016 25 January 11, 2016 25 January 18, 2016 25 January 25, 2016 25 February 1, 2016 25 February 8, 2016 Operators are encouraged to complete the survey provided inAPPENDIX Bof this service bulletin to help Boeing predict the quantity and timing of the Boeing Supplied Kits/Parts.

Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: August 04, 2015 737-29A1119 31of53 **BOEING SERVICE BULLETIN 737-29A1119 ALERT**  **ALERT B.**  **Industry Support Information**

Boeing warranty remedies are not available for the (configuration changes, inspection, and/or repair procedures) given in this service bulletin. **C. Parts Necessary for Each Airplane**  1. Kits/Parts **ALL**
**Kit 002A0014 Notes**  **Existing Part Number**  **Name Qty**  **New Part Number -116**  Top Kit - Wire Bundle/Hydraulic Tube Clamp Installation - 002A0014-116

CLAMP,LOOP

1 AS21919WCE06 (a) WIRE BUNDLE CLAMP 1 BACC10JU104 (BACC10GU104 or BACC10JU104P optional) (a) WIRE BUNDLE CLAMP 1 BACC10JU105 (BACC10GU105 or BACC10JU105P optional) (a) WIRE BUNDLE CLAMP 1 BACC10JU106 (BACC10GU106 or BACC10JU106P optional) NUT

1 BACN10JC3CD (a) (b) SCREW 1 BACS12GU3K12 (a) (b) SCREW 1 BACS12GU3K16 (a) (b) SCREW 1 BACS12GU3K20 (a) (b) SCREW 1 BACS12GU3K24 (a) (b) SCREW 1 BACS12GU3K28 (a) (b) SCREW 1 BACS12GU3K32 (a) (b) SCREW 1 BACS12GU3K36 (a) (b) SCREW 1 BACS12GU3K8 WASHER

1 NAS1149D0316J (a) (b) SPACERS FOR RIVETS 1 NAS42DD6-112FC

Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: August 04, 2015 737-29A1119 32of53 **BOEING SERVICE BULLETIN 737-29A1119 ALERT**  **ALERT ALL** 
**Kit 002A0014 Notes**  **Existing Part Number**  **Name Qty**  **New Part Number -116**  (a) (b) SPACERS FOR RIVETS 1 NAS42DD6-128FC (a) (b) SPACERS FOR RIVETS 1 NAS42DD6-16FC (a) (b) SPACERS FOR RIVETS 1 NAS42DD6-32FC (a) (b) SPACERS FOR RIVETS 1 NAS42DD6-48FC (a) (b) SPACERS FOR RIVETS 1 NAS42DD6-64FC (a) (b) SPACERS FOR RIVETS 1 NAS42DD6-80FC (a) (b) SPACERS FOR RIVETS 1 NAS42DD6-96FC (a) There are more parts than are necessary. (b) If grip length shown is not available at Boeing, fasteners supplied in kits may be one grip length longer than indicated. Also, if any fastener part numbers listed are not available or have been superseded, substitute fasteners may be supplied in kits.
2. Parts and Materials Supplied by the Operator The following parts or materials are necessary to do the change in this service bulletin. Parts and materials in the manuals given in Paragraph 1.J., References, can also be necessary. Examine operator part and material supply to make sure all necessary parts and materials are available. **Group 1:**
**Notes Name**  **QTY Part Number/**  **Specification** (a) HYDRAULIC TUBE 1 272A4451-56 (a) This part is only necessary if the existing hydraulic tube is found to be damaged, and is replaced. The existing hydraulic tube can also be repaired.

Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: August 04, 2015 737-29A1119 33of53 **BOEING SERVICE BULLETIN 737-29A1119 ALERT**  **ALERT Group 2:** 
**Notes Name**  **QTY Part Number/**  **Specification** (a) HYDRAULIC TUBE 1 272A4451-1044 (a) This part is only necessary if the existing hydraulic tube is found to be damaged, and is replaced. The existing hydraulic tube can also be repaired.
3. Parts Modified and Reidentified None. 4. Parts Removed and Not Replaced None. **D. Parts Necessary to Change Spares**  None. **E. Special Tooling - Price and Availability**  None. **F. Special Tooling Necessary to do this Service Bulletin**  No special tools or equipment are necessary to do the change in this service bulletin. But, maintenance and overhaul tools in the manuals given in Paragraph 1.J., References, can be necessary. Examine operator tool supply to make sure all necessary tools are available.

Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: August 04, 2015 737-29A1119 34of53 **BOEING SERVICE BULLETIN 737-29A1119 ALERT**  **ALERT 3. ACCOMPLISHMENT INSTRUCTIONS**  **A. GENERAL INFORMATION**  **CAUTION:** KEEP THE WORK AREA, WIRES AND ELECTRICAL BUNDLES CLEAN OF METAL

PARTICLES OR CONTAMINATION WHEN YOU USE TOOLS. UNWANTED MATERIAL, METAL PARTICLES OR CONTAMINATION CAUGHT IN WIRE BUNDLES CAN CAUSE DAMAGE TO THE BUNDLES. DAMAGED WIRE BUNDLES CAN CAUSE SPARKS OR OTHER ELECTRICAL DAMAGE. **NOTE:** 1. Manual titles are referred to by acronyms. Refer to Paragraph 1.J., References, for

definition of the acronyms. 2. Obey all of the warnings and cautions given in the specified manual sections. 3. Unless shown differently, these dimensions and tolerances are used:

– Linear dimensions are in inches

– Tolerance on linear dimensions, other than rivet and bolt edge margins, is plus or minus 0.03 inch

– Tolerance on rivet and bolt edge margin is plus or minus 0.05 inch

– Angular tolerance is plus or minus 2 degrees

– Hole dimensions for standard solid rivets and fasteners are in Structural Repair Manual (SRM) Chapter 51

– Torque Values:

— Values for structural fasteners are given in 737 Structural Repair Manual, Chapter 51.

— Values for airframe maintenance tasks are included in Chapter 20 of 737 Aircraft Maintenance Manual (AMM).

— Values for electrical maintenance tasks are included in Chapter 20 of Standard Wiring Practices Manual (SWPM).

— Values for engine maintenance tasks are included in Chapter 70 of 737 Aircraft Maintenance Manual (AMM).

— Non-standard torque values for maintenance tasks are included in the applicable installation step.

4. Use the approved fastener, process and material substitutions in accordance with

SRM Chapter 51. 5. Refer to theSWPM 20-10-11andSWPM 20-10-12for the wire installation procedures,

andSWPM 20-10-19for the wire separation requirements, as accepted procedures. 6. The necessary conditions for selection of clamp type and size are included inSWPM 20-10-12. If any wire bundle support clamp specified in this service bulletin does not make a correct fit on the wire bundle, refer toSWPM 20-10-12as an accepted procedure to select a clamp that fits correctly.

Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: August 04, 2015 737-29A1119 35of53 **BOEING SERVICE BULLETIN 737-29A1119 ALERT**  **ALERT**7. If the length of any fastener specified in this service bulletin does not meet installation standards given in SRM Chapter 51, then a fastener of the same specification, or an approved substitute, with a length which meets the installation standards given in SRM Chapter 51 may be used. In addition, washers may be installed for fastener grip length in accordance with SRM Chapter 51. Refer toSOPM 20-50-01for alternate full threaded fasteners (screws) needed for installation in this service bulletin. 8. When more than one OPTION is given for a CONDITION, do only one of the OPTION

numbers. When more than one ACTION is given for a CONDITION number or an OPTION number, do all of the ACTION numbers for that CONDITION number or OPTION number. 9. A Detailed Inspection is defined as: An intensive examination of a specific item,

installation, or assembly to detect damage, failure, or irregularity. Available lighting is normally supplemented with a direct source of good lighting at an intensity deemed appropriate. Inspection aids such as mirrors, magnifying lenses, etc. may be necessary. Surface cleaning and elaborate procedures may be required. 10. These work instructions refer to procedures included in other Boeing documents. When the words "refer to" are used and the operator has an accepted alternative procedure, the accepted alternative procedure can be used. When the words "in accordance with" are included in the instruction, the procedure in the Boeing document must be used. 11. Refer toAPPENDIX Afor logic diagram(s). Logic diagrams are provided as an aid only. Information contained in Paragraph 1.E., Compliance is the primary source for compliance times. Information in Paragraph 3.B., Work Instructions is the primary source for tasks required for compliance. 12. If it is necessary to remove more parts for access, you can remove those parts. If you can get access without removing identified parts, it is not necessary to remove all of the identified parts. Jacking and shoring limitations must be observed. 13. Where the work instructions include installation of a kept part, a new or serviceable part with the same part number can be installed as an alternative to the kept part. 14. This service bulletin includes functional test procedures for the systems changed by this service bulletin. More functional tests can possibly be necessary in accordance with standard maintenance practices because of interruption to other airplane systems. 15. Use of colors in Figures is based on guidance from the ATA e-Business Program (ATA) iSpec 2200. 16. The compliance times for the actions in Paragraph 3.B., WORK INSTRUCTIONS are in Paragraph 1.E., Compliance

. **B. WORK INSTRUCTIONS**  1. Install downlock pins in all landing gears. Refer to737-600/700/800/900 AMM 32-00-01as an accepted procedure. 2. Put chocks around the tires of all landing gears.

Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: August 04, 2015 737-29A1119 36of53 **BOEING SERVICE BULLETIN 737-29A1119 ALERT**  **ALERT**3. Remove electrical power from the airplane. Refer to737-600/700/800/900 AMM 24-22-00as an accepted procedure. 4. Get access to the right side of the Main Landing Gear wheel well in the forward bulkhead area. 5. Do PART 1: WIRE BUNDLES AND HYDRAULIC TUBE - DETAILED INSPECTION.

a. CONDITION 1: DAMAGE TO WIRE BUNDLES FOUND DURING DETAILED INSPECTION. (1) CONDITION 1 (ACTION 1): Repair the damaged wire bundles W6128 and W8122. Refer toSWPM 20-10-13as an accepted procedure. Record all wire numbers repaired to refer to for system tests. (2) CONDITION 1 (ACTION 2): Do PART 2: WIRE BUNDLES AND HYDRAULIC TUBE - CLAMPS INSTALLATION. b. CONDITION 2: DAMAGE TO HYDRAULIC TUBE FOUND DURING DETAILED INSPECTION. (1) CONDITION 2 (ACTION 1): (a) Remove pressure from hydraulic systems A, B and Standby. Refer to 737-600/700/800/900 AMM 29-09-00as an accepted procedure. (b) **Group 1:** Replace or repair damaged hydraulic tube P/N 272A4451-56. Refer to 737-600/700/800/900 AMM 20-10-51as an accepted procedure. (c) **Group 2:** Replace or repair damaged hydraulic tube P/N 272A4451-1044. Refer to 737-600/700/800/900 AMM 20-10-51as an accepted procedure. (2) CONDITION 2 (ACTION 2): Do PART 2: WIRE BUNDLES AND HYDRAULIC TUBE - CLAMPS INSTALLATION.

c. CONDITION 3: DAMAGE TO WIRE BUNDLES AND HYDRAULIC TUBE FOUND DURING INSPECTION. (1) CONDITION 3 (ACTION 1): Repair the damaged wire bundles W6128 and W8122. Refer toSWPM 20-10-13as an accepted procedure. Record all wire numbers repaired to refer to for system tests. (2) CONDITION 3 (ACTION 2): (a) Remove pressure from hydraulic systems A, B and Standby. Refer to 737-600/700/800/900 AMM 29-09-00as an accepted procedure. (b) **Group 1:** Replace or repair damaged hydraulic tube P/N 272A4451-56. Refer to 737-600/700/800/900 AMM 20-10-51as an accepted procedure. (c) **Group 2:** Replace or repair damaged hydraulic tube P/N 272A4451-1044. Refer to 737-600/700/800/900 AMM 20-10-51as an accepted procedure.

Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: August 04, 2015 737-29A1119 37of53 **BOEING SERVICE BULLETIN 737-29A1119 ALERT**  **ALERT**(3) CONDITION 3 (ACTION 3): Do PART 2: WIRE BUNDLES AND HYDRAULIC TUBE - CLAMPS INSTALLATION. d. CONDITION 4: NO DAMAGE IS FOUND DURING DETAILED INSPECTION. (1) CONDITION 4 (ACTION 1): Do PART 2: WIRE BUNDLES AND HYDRAULIC TUBE - CLAMPS INSTALLATION. 6. If you replaced or repaired the hydraulic tube, service the hydraulic reservoir. Refer to 737-600/700/800/900 AMM 12-12-00as an accepted procedure.
7. Restore the electrical power to the airplane. Refer to737-600/700/800/900 AMM 24-22-00as an accepted procedure. 8. If you replaced or repaired the hydraulic tube, restore pressure to hydraulic systems A, B and Standby. Refer to737-600/700/800/900 AMM 29-11-00for systems A and B, and 737-600/700/800/900 AMM 29-21-00for the standby hydraulic system as accepted procedures. 9. If you replaced or repaired the hydraulic tube, check for leaks at the hydraulic tube connections. Refer to737-600/700/800/900 AMM 20-10-51as an accepted procedure. 10. If any of the wire bundles were repaired, do the tests that follow. **NOTE:** The table that follows includes tests for all wires in W6128 and W8122. Operators only need to test the systems that were disturbed as a result of wire repairs.

a. If wire bundle W6128 was repaired, do the tests that follow.
**Test - Refer to AMM Chapter as an Accepted**  **Procedure Refer to WDM Chapter**  **System Name Applicable Wire Repaired** 

737-600/700/800/900 AMM 33-42-00Retractable Landing Light Assembly Replacement.(a) 737-600/700/800/900 WDM 33-42-11 Retractable Landing Lights 0001 thru 0006

737-600/700/800/900 AMM 29-11-21Electric Motor Driven Pump (EMDP) Test. 737-600/700/800/900 WDM 29-11-12 Hydraulic Systems A and B Electric Motor Driven Pump (EMDP) 0501, 0503 thru 0506 and YAAF

737-600/700/800/900 AMM 29-32-00Case Drain Overheat Switch Test 737-600/700/800/900 WDM 29-34-11 System A Pump Overheat Warning System (ELEC 2) 0502 and 0507 thru 0509

737-600/700/800/900 AMM 28-21-00Pressure Fueling System Test. 737-600/700/800/900 WDM 28-21-11 Pressure Fueling System 6011

(a) It is only necessary to do the test of the existing retractable landing lights.

Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: August 04, 2015 737-29A1119 38of53 **BOEING SERVICE BULLETIN 737-29A1119 ALERT**  **ALERT**b. If wire bundle W8122 was repaired, do the tests that follow.
**Test - Refer to AMM Chapter as an Accept**  **ed Procedure Refer to WDM Chapter**  **System Name Applicable Wire Re-**  **paired**
737-600/700/800/900 AMM 27-09-61Low Pressure Warning Switch Test. 737-600/700/800/900 WDM 27-23-14 Flight Control Low Pressure Indication 0501 and 0502

737-600/700/800/900 AMM 29-22-00Power Transfer Unit (PTU) System Test. 737-600/700/800/900 WDM 29-25-11Hydraulic Power Transfer Unit (PTU) System 0503 and 0504

737-600/700/800/900 AMM 29-22-31Power Transfer Unit (PTU)Control Valve Installation Test. 737-600/700/800/900 WDM 29-23-11 Landing Gear Transfer Valve Control 0505 thru 0510

737-600/700/800/900 AMM 27-09-31Flight Controls Shutoff Valve Test. 737-600/700/800/900 WDM 27-23-11 Flight Control System B Shutoff Valve 0511 thru 0513

737-600/700/800/900 AMM 27-81-00Leading Edge Uncommanded Motion Protection Test. 737-600/700/800/900 WDM 27-81-51Leading Edge Uncommanded Motion Protection Shutoff Valve 0515, 0516 and YAAF

737-600/700/800/900 AMM 27-09-61Low Pressure Warning Switch Test. 737-600/700/800/900 WDM 31-31-15or737- 600/700/800/900 WDM 27-23-14 (a) Flight Control Low Pressure Indication 0530

737-600/700/800/900 AMM 27-61-12Spoiler Shutoff Valve Test. 737-600/700/800/900 WDM 27-61-11 Spoiler Shutoff Valve System B 0542 thru 0544

737-600/700/800/900 AMM 31-51-00Takeoff Warning System Test. 737-600/700/800/900 WDM 31-53-11 Aural Takeoff Warning System 3201B,3201R and 3201Y (a) Refer to the Wiring Diagram Manual for the applicability of Wire 0530.
11. Remove the downlock pins from all landing gears, Refer to737-600/700/800/900 AMM 32-00-01 as an accepted procedure. 12. Remove chocks from around the tires of all landing gears. 13. Put the airplane back to a serviceable condition.

Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: August 04, 2015 737-29A1119 39of53 **BOEING SERVICE BULLETIN 737-29A1119 ALERT**  **ALERT PART 1: WIRE BUNDLES AND HYDRAULIC TUBE - DETAILED INSPECTION** 

1. **Group 1:** Do a Detailed Inspection of the wire bundles and hydraulic tube for damage in accordance with FIGURE 1

. 2. **Group 2:** Do a Detailed Inspection of the wire bundles and hydraulic tube for damage in accordance with FIGURE 2

. **PART 2: WIRE BUNDLES AND HYDRAULIC TUBE - CLAMPS INSTALLATION** 1. **Group 1:** Install clamps and an optional spacer between the wire bundles and hydraulic tube in accordance with FIGURE 3

. 2. **Group 2:** Install clamps and an optional spacer between the wire bundles and hydraulic tube in accordance with FIGURE 4

.

Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: August 04, 2015 737-29A1119 40of53 **BOEING SERVICE BULLETIN 737-29A1119 ALERT**  **ALERT This Figure applies only to: Group 1.** 

**FIGURE 1: RIGHT MAIN WHEEL WELL - BELOW ELECTRIC MOTOR DRIVEN PUMP 'B' - HYDRAULIC**  **TUBE AND WIRE BUNDLES - INSPECTION**

**(SHEET 1 OF 2)** Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: August 04, 2015 737-29A1119 41of53 **BOEING SERVICE BULLETIN 737-29A1119 ALERT**  **ALERT**The step numbers shown below agree with the numbers shown in the circle symbols in the figure. The QTY

numbers shown below are the number of parts necessary for each airplane.
**More Data Qty**  **Identification Name**  **Task Step**  In the area shown,do a Detailed Inspection for chafing damage. Refer to737- 600/700/800/900 AMM 20-10-13asan accepted procedure. 1 W6128 AND W8122 WIRE BUNDLES Inspect 1

In the area shown,do a Detailed Inspection for chafing or damage. Refer to 737- 600/700/800/900 AMM 20-10-51asan accepted procedure. 1 272A4451-56 HYDRAULIC TUBE Inspect 2

**FIGURE 1: RIGHT MAIN WHEEL WELL - BELOW ELECTRIC MOTOR DRIVEN PUMP 'B' - HYDRAULIC**  **TUBE AND WIRE BUNDLES - INSPECTION**

**(SHEET 2 OF 2)** Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: August 04, 2015 737-29A1119 42of53 **BOEING SERVICE BULLETIN 737-29A1119 ALERT**  **ALERT This Figure applies only to: Group 2.** 

**FIGURE 2: RIGHT MAIN WHEEL WELL - BELOW ELECTRIC MOTOR DRIVEN PUMP 'B' - HYDRAULIC**  **TUBE AND WIRE BUNDLES - INSPECTION**

**(SHEET 1 OF 2)** Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: August 04, 2015 737-29A1119 43of53 **BOEING SERVICE BULLETIN 737-29A1119 ALERT**  **ALERT**The step numbers shown below agree with the numbers shown in the circle symbols in the figure. The QTY

numbers shown below are the number of parts necessary for each airplane.
**More Data Qty**  **Identification Name**  **Task Step**  In the area shown,do a Detailed Inspection for damage. Refer to737- 600/700/800/900 AMM 20-10-13asan accepted procedure. 1 W6128 AND W8122 WIRE BUNDLES Inspect 1

In the area shown,do a Detailed Inspection for damage. Refer to737- 600/700/800/900 AMM 20-10-51asan accepted procedure. 1 272A4451-1044 HYDRAULIC TUBE Inspect 2

**FIGURE 2: RIGHT MAIN WHEEL WELL - BELOW ELECTRIC MOTOR DRIVEN PUMP 'B' - HYDRAULIC**  **TUBE AND WIRE BUNDLES - INSPECTION**

**(SHEET 2 OF 2)** Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: August 04, 2015 737-29A1119 44of53 **BOEING SERVICE BULLETIN 737-29A1119 ALERT**  **ALERT This Figure applies only to: Group 1.** 

**FIGURE 3: RIGHT MAIN WHEEL WELL - BELOW ELECTRIC MOTOR DRIVEN PUMP 'B' - CLAMPS -**  **INSTALLATION (SHEET 1 OF 3)**  Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: August 04, 2015 737-29A1119 45of53 **BOEING SERVICE BULLETIN 737-29A1119 ALERT**  **ALERT**The step numbers shown below agree with the numbers shown in the circle symbols in the figure. The QTY

numbers shown below are the number of parts necessary for each airplane.
**More Data Qty**  **Identification Name**  **Task Step**  (a) 2
- CLAMPS Loosen 1 (a) 1 W6128 AND W8122 WIRE BUNDLES Adjust 2 On wire bundles W6128 and W8122 as shown. (b) 1 BACC10JU105 (BACC10GU105 or BACC10JU105P optional) WIRE BUNDLE CLAMP Install (New) 3

On hydraulic tube P/N 272A4451-56 as shown. 1 AS21919WCE06 CLAMP,LOOP Install (New) 4

(c) 1 NAS42DD6-16FC SPACERS FOR RIVETS Install (New) 5 (d) 1 BACS12GU3K8 SCREW Install (New) 6 1 NAS1149D0316J WASHER Install (New) Loosely to let wirebundles be adjusted. 1 BACN10JC3CD NUT Install (New)

35 in-lb. 1 BACN10JC3CD NUT Torque 7 2
- CLAMPS Tighten 8 (a) Loosen existing clamps and adjust wire bundle slack outboard, towards the hydraulic tube, to install new clamps, if necessary. (b) If the listed wire bundle clamp does not fit correctly, use wire bundle clamp BACC10JU104 (BACC10GU104 or BACC10JU104P optional) or BACC10JU106 (BACC10GU106 or BACCGU106P optional). (c) Installation of a spacer is optional. As an alternative, make a selection of a spacer from the extra parts table below. Make sure that the distance between the wire bundles and hydraulic tube is 0.5 inch (1.3 cm) minimum. (d) As an alternative, make a selection of a screw from the extra parts table below. The parts shown in the table below are provided as extra parts for this figure.
**More Data Qty**  **Identification Name**  1

BACC10JU104 (BACC10GU104 or BACC10JU104P optional) WIRE BUNDLE CLAMP

1 BACC10JU106 (BACC10GU106 or BACC10JU106P optional) WIRE BUNDLE CLAMP

1 BACS12GU3K12 SCREW

**FIGURE 3: RIGHT MAIN WHEEL WELL - BELOW ELECTRIC MOTOR DRIVEN PUMP 'B' - CLAMPS -**  **INSTALLATION (SHEET 2 OF 3)**  Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: August 04, 2015 737-29A1119 46of53 **BOEING SERVICE BULLETIN 737-29A1119 ALERT**  **ALERT More Data**  **Qty Identification**  **Name** 1

BACS12GU3K16 SCREW 1

BACS12GU3K20 SCREW 1

BACS12GU3K24 SCREW 1

BACS12GU3K28 SCREW 1

BACS12GU3K32 SCREW 1

BACS12GU3K36 SCREW 1

NAS42DD6-32FC SPACERS FOR RIVETS 1 NAS42DD6-48FC SPACERS FOR RIVETS 1 NAS42DD6-64FC SPACERS FOR RIVETS 1 NAS42DD6-80FC SPACERS FOR RIVETS 1 NAS42DD6-96FC SPACERS FOR RIVETS 1 NAS42DD6-112FC SPACERS FOR RIVETS 1 NAS42DD6-128FC SPACERS FOR RIVETS

**FIGURE 3: RIGHT MAIN WHEEL WELL - BELOW ELECTRIC MOTOR DRIVEN PUMP 'B' - CLAMPS -**  **INSTALLATION (SHEET 3 OF 3)**  Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: August 04, 2015 737-29A1119 47of53 **BOEING SERVICE BULLETIN 737-29A1119 ALERT**  **ALERT This Figure applies only to: Group 2.** 

**FIGURE 4: RIGHT MAIN WHEEL WELL - BELOW ELECTRIC MOTOR DRIVEN PUMP 'B' - CLAMPS -**  **INSTALLATION (SHEET 1 OF 3)**  Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: August 04, 2015 737-29A1119 48of53 **BOEING SERVICE BULLETIN 737-29A1119 ALERT**  **ALERT**The step numbers shown below agree with the numbers shown in the circle symbols in the figure. The QTY

numbers shown below are the number of parts necessary for each airplane.
**More Data Qty**  **Identification Name**  **Task Step**  (a) 2
- CLAMPS Loosen 1 (a) 1 W6128 AND W8122 WIRE BUNDLES Adjust 2 On wire bundles W6128 and W8122 as shown. (b) 1 BACC10JU105 (BACC10GU105 or BACC10JU105P optional) WIRE BUNDLE CLAMP Install (New) 3

On hydraulic tube P/N 272A4451- 1044 as shown. 1 AS21919WCE06 CLAMP,LOOP Install (New) 4

(c) 1 NAS42DD6-16FC SPACERS FOR RIVETS Install (New) 5 (d) 1 BACS12GU3K8 SCREW Install (New) 6 1 NAS1149D0316J WASHER Install (New) Loosely to let wirebundles be adjusted. 1 BACN10JC3CD NUT Install (New)

35 in-lb. 1 BACN10JC3CD NUT Torque 7 2
- CLAMPS Tighten 8 (a) Loosen existing clamps and adjust wire bundle slack outboard, towards the hydraulic tube, to install new clamps, if necessary. (b) If the listed wire bundle clamp does not fit correctly, use wire bundle clamp BACC10JU104 (BACC10GU104 or BACC10JU104P optional) or BACC10JU106 (BACC10GU106 or BACCGU106P optional). (c) Installation of a spacer is optional. As an alternative, make a selection of a spacer from the extra parts table below. Make sure that the distance between the wire bundles and hydraulic tube is 0.5 inch (1.3 cm) minimum. (d) As an alternative, make a selection of a screw from the extra parts table below. The parts shown in the table below are provided as extra parts for this figure.
**More Data Qty**  **Identification Name**  1

BACC10JU104 (BACC10GU104 or BACC10JU104P optional) WIRE BUNDLE CLAMP

1 BACC10JU106 (BACC10GU106 or BACC10JU106P optional) WIRE BUNDLE CLAMP

1 BACS12GU3K12 SCREW

**FIGURE 4: RIGHT MAIN WHEEL WELL - BELOW ELECTRIC MOTOR DRIVEN PUMP 'B' - CLAMPS -**  **INSTALLATION (SHEET 2 OF 3)**  Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: August 04, 2015 737-29A1119 49of53 **BOEING SERVICE BULLETIN 737-29A1119 ALERT**  **ALERT More Data**  **Qty Identification**  **Name** 1

BACS12GU3K16 SCREW 1

BACS12GU3K20 SCREW 1

BACS12GU3K24 SCREW 1

BACS12GU3K28 SCREW 1

BACS12GU3K32 SCREW 1

BACS12GU3K36 SCREW 1

NAS42DD6-32FC SPACERS FOR RIVETS 1 NAS42DD6-48FC SPACERS FOR RIVETS 1 NAS42DD6-64FC SPACERS FOR RIVETS 1 NAS42DD6-80FC SPACERS FOR RIVETS 1 NAS42DD6-96FC SPACERS FOR RIVETS 1 NAS42DD6-112FC SPACERS FOR RIVETS 1 NAS42DD6-128FC SPACERS FOR RIVETS

**FIGURE 4: RIGHT MAIN WHEEL WELL - BELOW ELECTRIC MOTOR DRIVEN PUMP 'B' - CLAMPS -**  **INSTALLATION (SHEET 3 OF 3)**  Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: August 04, 2015 737-29A1119 50of53 **BOEING SERVICE BULLETIN 737-29A1119 ALERT**  **ALERT**Logic diagrams are provided as an aid only. Information contained inParagraph 1.E., Complianceis the primary

source for compliance times. Information contained in Paragraph 3.B., Work Instructionsis the primary source for tasks required for compliance. 1. The table below gives the description for the parts and conditions called out in the logic diagrams. **Description Title**  WIRE BUNDLES AND HYDRAULIC TUBE - DETAILED INSPECTION PART 1 WIRE BUNDLES AND HYDRAULIC TUBE - CLAMPS INSTALLATION PART 2 DAMAGE TO WIRE BUNDLES FOUND DURING DETAILED INSPECTION CONDITION 1 DAMAGE TO HYDRAULIC TUBE FOUND DURING DETAILED INSPECTION CONDITION 2 DAMAGE TO WIRE BUNDLES AND HYDRAULIC TUBE FOUND DURING DETAILED INSPECTION CONDITION 3
NO DAMAGE IS FOUND DURING DETAILED INSPECTION CONDITION 4

**APPENDIX A: LOGIC DIAGRAM FOR PARAGRAPH 1.E. COMPLIANCE: TABLE 1: RIGHT MAIN WHEEL**  **WELL - BELOW ELECTRIC MOTOR DRIVEN PUMP 'B' - HYDRAULIC TUBE AND WIRE BUNDLES - INSPECTION AND CLAMPS INSTALLATION** 

**(SHEET 1 OF 2)** Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: August 04, 2015 737-29A1119 51of53 **BOEING SERVICE BULLETIN 737-29A1119 ALERT**  **ALERT APPENDIX A:** **LOGIC DIAGRAM FOR PARAGRAPH 1.E. COMPLIANCE: TABLE 1: RIGHT MAIN WHEEL**

**WELL - BELOW ELECTRIC MOTOR DRIVEN PUMP 'B' - HYDRAULIC TUBE AND WIRE BUNDLES - INSPECTION AND CLAMPS INSTALLATION** 

**(SHEET 2 OF 2)** Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: August 04, 2015 737-29A1119 52of53 **BOEING SERVICE BULLETIN 737-29A1119 ALERT**  **ALERT APPENDIX B:** **PART DEMAND INTENT (SHEET 1 OF 1)**  Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. Original Issue: August 04, 2015 737-29A1119 53of53 **BOEING SERVICE BULLETIN 737-29A1119 ALERT**  **ALERT**