FUEL SYSTEM WIRING, INSTALLATION OF TRANSIENT SUPPRESSION UNITS (TSU S)

Transcription

1 Page: 1 of 24 TITLE: FUEL SYSTEM WIRING, INSTALLATION OF TRANSIENT SUPPRESSION UNITS (TSU S) 1.0 SUMMARY 1.1. Reason Provide an Alternate Means of Compliance (AMOC) to Airworthiness Directive (AD) The AD mandates that operators of B737 aircraft perform wire separation modifications to fuel system wiring. The AMOC is achieved by installation of Smiths Industries Transient Suppression Units (TSU s) Description The Transient Suppression Unit is inserted in the Fuel Quantity Indication System (FQIS) wiring between the in-tank components (capacitance probes and the compensators) and the Fuel Quantity Indicators located in the cockpit. The TSU s will be installed near the bulkhead where the FQIS wiring enters the tanks and are intended to prevent any electrical signals, either current or voltage, that is capable of igniting fuel vapor, from entering the fuel tanks. The TSU is intended to be an (AMOC) to the wiring separation requirements mandated by AD EFFECTIVITY 2.1. All B through 500 series aircraft equipped with Smiths Industries FQIS. 3.0 COMPLIANCE 3.1. Mandatory Airworthiness Directive Recommended N/A 3.3. Optional N/A 4.0 CLASSIFICATION 4.1. Airworthiness Directive Repair/Alteration/Inspection/Other Alteration Major/Minor Major Method of Approval STC ST00847SE 5.0 APPROVAL 5.1. Jennifer Arnold 8/1/ C. Bogert 8/1/00 Prepared By Jennifer Arnold Date Project Engineer Chuck Bogert Date Avionics Systems, Engineer Smiths Industries Inc. Global Aerospace Inc Larry Pongracz 8/1/ Ron Tadeo 8/1/00 Checked By Larry Pongracz Date Q.C. Engineer Ron Tadeo Date Systems, Sr. Engineer Smiths Industries Inc. Global Aerospace Inc Russell Fortney 8/1/ R. Munson 8/1/00 Director of Engineering Russell Fortney Date Configuration Mgr. Rick Munson Date Global Aerospace Inc. Smiths Industries Inc J. Wyler 8/1/00 Principal Engineer John Wyler Date Smiths Industries Inc. The information contained herein is proprietary to Smiths Industries Inc, and shall not be reproduced, transferred to other documents, or disclosed to others in whole or part for any design, manufacturing, or for any other purpose except as specifically authorized in writing by Smiths Industries.

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3 Page: 3 of WEIGHT AND BALANCE 6.1. Weight Removed-N/A 6.2. Weight Added DESCRIPTION Approximate Station Location of Weight Increase (FS - inches) Mfr s Empty Weight Increase (lbs) Moment Change (in-lbs) Left Wing TSU 920 3lbs Right Wing TSU 920 3lbs Center Tank TSU 920 3lbs ELECTRICAL LOAD ANALYSIS 7.1. Decreased Loads N/A 7.2. Increased Loads - N/A 8.0 REFERENCES 8.1. Generating Documents 1. Smiths Industries, SI 0002-ED 8.2. Source Documents Airworthiness Directive (AD) Smiths Report SR Cross References N/A 8.4. Superseded Documents N/A The information contained herein is proprietary to Smiths Industries Inc, and shall not be reproduced, transferred to other documents, or disclosed to others in whole or part for any design, manufacturing, or for any other purpose except as specifically authorized in writing by Smiths Industries.

4 Page: 4 of Attachments Attachment A: Wiring Diagrams , Page 1 After (3-Tank Configuration 1) , Page 2 After (3-Tank Configuration 2) , Page 2A After (3-Tank Configuration 2, 3 Wire Trimmer) , Page 2B After (3-Tank Configuration 2, 2 Wire Trimmer) , Page 3 After (4-Tank Configuration) , Page 1 After (3-Tank Configuration 1) , Page 2 After (3-Tank Configuration 1A) , Page 3 After (3-Tank Configuration 2) , Page 4 After (3- Tank Configuration 2A) , Page 5 After (4-Tank Configuration) Attachment B: Wire Fabrication List Page 1 All Configurations Attachment C: Wire Hookup/Cap&Stow/Retermination List Page 1 3 Tank Configurations 1 and 1A Page 2 3 Tank Configurations 2 and 2A Page 3 4 Tank Configuration 8.6. Appendages Appendage A: Smiths Industries Installation Drawing 0132-ED The information contained herein is proprietary to Smiths Industries Inc, and shall not be reproduced, transferred to other documents, or disclosed to others in whole or part for any design, manufacturing, or for any other purpose except as specifically authorized in writing by Smiths Industries.

5 Page: 5 of PUBLICATIONS AFFECTED 9.1. Maintenance Manual Ensure that the new description, operation, testing and removal/installation are incorporated into the manual Chapter 28-41, as modified by this E. O Illustrated Parts Catalog Ensure that section is updated to reflect the changes made per this E. O Wiring Diagram Manual Ensure that at its next release the Equipment List, Hookup List, Wire List and Ground List sections of the WDM reflects the parts added by this E. O. Ensure that at its next release the wiring diagram changes defined by this E. O. are incorporated Airplane Flight Manual N/A 10.0 DEPARTMENTAL INSTRUCTIONS Planning Ensure that the parts required for this E. O. are available and any equipment sourcing will not delay the return to service schedule of the aircraft. Ensure all pages of the Engineering Order and Attachments are present before beginning work. Smiths Industries STC SA3498NM must be accomplished prior to or in conjunction with this E. O. for aircraft not equipped with Smiths model fuel gauges per Boeing TC Avionics All wiring fabrication, installation and modification must be accomplished using Boeing Standard Practices Chapter 20. NOTE: HARDWARE SPECIFIED HEREIN IS DESIGNED FOR NOMINAL AIRPLANE FIT. DUE TO DIFFERENCES IN AIRPLANE ASSEMBLY AND WIRE ROUTING, ALL WIRE BUNDLE CLAMPS AND ASSOCIATED HARDWARE SHOULD BE CHOSEN FOR PROPER FIT PER BOEING STANDARD PRACTICES. NOTE: THESE INSTALLATIONS ARE DESIGNED FOR INTERFACE TO STANDARD BOEING AND AUXILLARY TANK MANUFACTURER CONFIGURATIONS. CHANGES TO THESE CONFIGURATIONS, SUCH AS INSTALLATION OF DIFFERENT TANK HARNESSES UNDER AN STC MAY REQUIRE CHANGES TO THESE INSTALLATIONS (SUCH AS A CHANGE OF HARNESS BACKSHELLS). Any changes in standard hardware identified during installation shall be documented in accordance with the owner/ operator procedures (i.e. non-routine, etc.) Structures All fabrication, alterations and repairs must be accomplished using acceptable methods, i.e. Boeing Structural Repair Manual (SRM) and Boeing Standard Practices. Any changes in standard hardware identified during installation shall be documented in accordance with the owner/ operator procedures (i.e. non-routine, etc.). NOTE: HI-LOK FASTENERS MAY BE INSTALLED REVERSED FOR EASE OF ASSEMBLY PURPOSES. NOTE: ALUMINUM HI-LOK FASTENERS MAY BE REPLACED WITH ALUMINUM RIVETS PER BAC The information contained herein is proprietary to Smiths Industries Inc, and shall not be reproduced, transferred to other documents, or disclosed to others in whole or part for any design, manufacturing, or for any other purpose except as specifically authorized in writing by Smiths Industries.

6 Page: 6 of WORK INSTRUCTIONS Mech. Insp. WARNING: CAUTION: TO AVOID INJURY TO MAINTENANCE PERSONNEL OR DAMAGE TO EQUIPMENT, MAKE CERTAIN THAT ADEQUATE PRECAUTIONS ARE TAKEN WHILE PERFORMING ANY WORK IF ELECTRICAL POWER IS APPLIED TO THE AIRCRAFT. ENSURE THE AIRCRAFT IS ELECTRICALLY GROUNDED SURVEY (If Required) If survey is not required, N/A all of section 11.1 and proceed to section 11.2 to begin installation Record aircraft model series and Serial number. Aircraft Model Aircraft S/N Verify that aircraft is equipped with auxiliary fuel tanks. If evident, steps 11.8 of this EO must be performed Verify that aircraft is equipped with Smiths Model No or digital fuel quantity indicators. If not, issue and comply with Smiths STC SA3498NM PREPARATION NOTE: Use extreme care when performing maintenance, as damage to the receptacle requires replacement of the wire bundle assembly. NOTE: All Placards to be fabricated per Smiths Industries Drawing and installed in accordance with Smiths Industries Installation Drawing 0132-ED Appendage A Extend the leading edge flaps and install safety locks in accordance with AMM Install ground lock assemblies in accordance with MM Defuel aircraft in accordance with MM Verify fuel quantity tank unit and compensator dry capacitance and record the values in the space provided below. This information is to be retained and will be used in compliance of Report No ED Fuel Quantity Test Procedure. Note: All compensator dry values are 40.2pf ± 1.2pf. The information contained herein is proprietary to Smiths Industries Inc, and shall not be reproduced, transferred to other documents, or disclosed to others in whole or part for any design, manufacturing, or for any other purpose except as specifically authorized in writing by Smiths Industries.

7 Page: 7 of 24 TANK TANK UNITS DRY CAPACITANCE VALUE (pf) TANK UNITS RECORDED VALUE COMPENSATOR RECORDED VALUE MAIN 1 (Left Wing) In Accordance with Maintenance Manual MAIN 2 (Right Wing) CENTER AUX. In Accordance with Maintenance Manual In Accordance with Maintenance Manual Contact tank manufacture for values Open the following circuit breakers located at P6 Panel: (1) FUEL QUANTITY (2) EP GROUND REFUELING (3) FUEL PANEL INDICATOR (4) FUEL QTY INDI-R TANK (5) FUEL QTY INDI-L TANK (6) FUEL QTY INDI-CTR TANK NOTE: IN 4-TANK CONFIGURATION, CB FOR CENTER TANK WOULD READ FUEL QTY INDI- CTR AND AUX TANK WIRING MODIFICATION OF INSTRUMENT PANEL MODULES P2-1 AND PI-3. (AIRPLANES WITH 3-FUEL TANKS) NOTE: Modification of the P2/P1 panel may vary from aircraft to aircraft. If wiring of the main fuel quantity indicators or the fuel quantity test switch is different than the data that is supplied with this E. O. Generate a non-routine and forward a copy and wiring diagram manuals to Smiths Industries for corrective action. CAUTION: MAKE CERTAIN PROPER PRECAUTIONS ARE TAKEN WHILE REMOVING THE PANEL(S), WIRE(S), WIRE BUNDLES, PLUGS, RECEPTACLES SHOULD NOT BE SUBJECTED TO UNDUE PULL AS THIS MAY DAMAGE OR LOOSEN THE WIRE(S) AND/OR THE CONTACTS For airplanes with 3-Fuel Tanks and subsequently 3-Fuel Quantity Indicators, proceed with the work step For airplanes with 4-Fuel Tanks and subsequently 4-Fuel Quantity Indicators, proceed with the step The information contained herein is proprietary to Smiths Industries Inc, and shall not be reproduced, transferred to other documents, or disclosed to others in whole or part for any design, manufacturing, or for any other purpose except as specifically authorized in writing by Smiths Industries.

8 Page: 8 of Remove fuel quantity indicators. If not , return to stores for disposition Remove DCTU units if equipped. If not , return to stores for disposition Remove P2-1 module from P2; Center Instrument Panel Remove P1-3 module from P1; Pilot s Instrument Panel. CAUTION: NOTE: ON SOME AIRPLANES THE FUEL QUANTITY TEST SWITCH MAY BE LOCATED ON P2-1 MODULE. IF THAT IS THE CASE N/A THIS WORK STEP Remove and cap and stow wire connected at pin 4 of all 3 Fuel Quantity Indicator s plugs in accordance with Attachment C of this E. O. Reference Before and After wiring diagrams and Remove and cap and stow wires connected at pins 5, 6, and 2 or 10 of the fuel quantity test switch s plug in accordance with Attachment C of this E. O. Reference Before and After wiring diagrams and Install the wires fabricated per Attachment B of this E. O. (use wire contained in kit ) between the 3-Fuel Quantity Indicator plugs and the Fuel Quantity Test Switch plug in accordance with Attachment C of this E. O. Reference Before and After wiring diagrams and Perform continuity check of all newly installed wiring in accordance with Attachment A After wiring diagrams WDM and Install Placard P/N in accordance with Smiths Industries Installation Dwg ED, Appendage A, Sht. A1. MAKE CERTAIN PROPER PRECAUTIONS ARE TAKEN WHILE INSTALLING THE PANEL(S) SO THE WIRE(S)/WIRE BUNDLES DO NOT GET CRIMPED/TWISTED OR RECEIVE UNDUE PULL Install P2-1 module back in its place at P2; Center Instrument panel Install P1-3 module back in it place at P1; Pilot s Instrument Panel. NOTE: THIS WORK STEP IS APPLICABLE ONLY IF WORK STEP IS PERFORMED Install DCTU units Install fuel quantity indicators Proceed to work step The information contained herein is proprietary to Smiths Industries Inc, and shall not be reproduced, transferred to other documents, or disclosed to others in whole or part for any design, manufacturing, or for any other purpose except as specifically authorized in writing by Smiths Industries.

9 Page: 9 of WIRING MODIFICATION OF INSTRUMENT PANEL MODULES P2-1 AND PI-3. (AIRPLANES WITH 4-FUEL TANKS) NOTE: Modification of the P2/P1 panel may vary from aircraft to aircraft. If wiring of the main fuel quantity indicators or the fuel quantity test switch is different than the data that is supplied with this E. O. Generate a non-routine and forward a copy and wiring diagram manuals to Smiths Industries for corrective action. CAUTION: MAKE CERTAIN PROPER PRECAUTIONS ARE TAKEN WHILE REMOVING THE PANEL(S). WIRE(S), WIRE BUNDLES, PLUGS, RECEPTACLES SHOULD NOT BE SUBJECTED TO UNDUE PULL AS THIS MAY DAMAGE OR LOOSEN THE WIRE(S) AND/OR THE CONTACTS Remove fuel quantity indicators. If not , return to stores for disposition Remove DCTU units if equipped. If not , return to stores for disposition Remove P2-1 module from P2; Center Instrument Panel Remove P1-3 module from P1; Pilot s Instrument Panel. NOTE: ON SOME AIRPLANES THE FUEL QUANTITY TEST SWITCH MAY BE LOCATED ON P2-1 MODULE. IF THAT IS THE CASE N/A THIS WORK STEP Remove and cap and stow wire connected at pin 4 of all 4 Fuel Quantity Indicator s plugs in accordance with Attachment C of this E. O. Reference Before and After wiring diagrams and Remove and cap and stow wires connected at pins 2, 5, 6, and 10 of the fuel quantity test switch s plug in accordance with Attachment C of this E. O. Reference Before and After wiring diagrams and Install the wires fabricated per Attachment B of this E. O. (use wire contained in kit ) between the 4-Fuel Quantity Indicator plugs and the Fuel Quantity Test Switch plug in accordance with Attachment C of this E. O. Reference Before and After wiring diagrams and Perform continuity check of all newly installed wiring in accordance with Attachment A After wiring diagrams WDM , and Install Placard P/N in accordance with Smiths Industries Installation Dwg ED, Appendage A, Sht. A1. CAUTION: MAKE CERTAIN PROPER PRECAUTIONS ARE TAKEN WHILE INSTALLING THE PANEL(S) SO THE WIRE(S)/WIRE BUNDLES DO NOT GET CRIMPED/TWISTED OR RECEIVE UNDUE PULL Install P2-1 module back in its place at P2; Center Instrument Panel. The information contained herein is proprietary to Smiths Industries Inc, and shall not be reproduced, transferred to other documents, or disclosed to others in whole or part for any design, manufacturing, or for any other purpose except as specifically authorized in writing by Smiths Industries.

10 Page: 10 of Install P1-3 module back in place at P1; Pilot s Instrument Panel. NOTE: THIS WORK STEP IS APPLICABLE ONLY IF WORK STEP IS PERFORMED Install DCTU units Install fuel quantity indicators INSTALLATION OF TRANSIENT SUPPRESSION UNIT AT TANK NO Gain access to the bussing plug D1588 on the left hand front spar through the extended leading edge flap cavity Remove leading edge inboard landing light per 737 MM to gain access for installation of TSU bracket. Tag and retain for reinstallation Install TSU bracket in the cavity outboard of the landing light per Appendage A: Smiths Industries Installation Drawing 0132-ED. Apply BMS5-95 or equivalent to mating surfaces and Hi-Loks prior to assembly Install ground studs, ground straps, placards P/N , 006, 007 and TSU per Appendage A: Smiths Industries Installation Drawing 0132-ED. Reference Boeing Standard Wiring Practices Manual Ch Torque TSU ground stud to 15 to 18 inch pounds Perform bonding resistance check, 8 milliohms maximum. Refer to Standard Wiring Practices Manual Apply a fillet seal of BMS5-95 or equivalent around the edges of all parts and fasteners. Then paint exposed surfaces of bracket and bottom exposed surface of TSU with primer (BMS type 2 or equivalent) and white paint (BMS type 1 or equivalent). NOTE: THE EXPOSED BOTTOM SURFACE OF THE TSU MAY BE PAINTED PRIOR TO INSTALLATION FOR EASE OF ASSEMBLY. ALL MOD A TSU UNITS ARE PAINTED AT THE FACTORY AND DO NOT REQUIRE PAINTING Remove plug D884 from D1588 Bussing plug for Tank 1. Remove clamps as required and reroute cable to newly installed TSU M9000K Reroute cable following existing bundle traveling inboard and forward to newly installed TSU. Install new connector DM9000KP1, P/N BACC63CB14-3SN with new 90 backshell P/N BACC10KE14 and reference identification sleeve. Terminate to TSU connector J1. NOTE: SOME INSTALLATIONS WILL ALREADY HAVE A CONNECTOR WITH 90 BACKSHELL THAT CAN BE USED IF DESIRED, BUT NEW IDENTIFICATION SLEEVE IS REQUIRED. The information contained herein is proprietary to Smiths Industries Inc, and shall not be reproduced, transferred to other documents, or disclosed to others in whole or part for any design, manufacturing, or for any other purpose except as specifically authorized in writing by Smiths Industries.

11 Page: 11 of Install new harness P/N XXX per Appendage A: Smiths Industries Installation Drawing 0132-ED and connect connector DM9000KP2 P/N BACC63CB14-3S6 to TSU connector J Connect connector D884 to bussing plug D1588 at tank wall Install clamps on old harness that has been rerouted to TSU M9000K Install new clamps on new harness routed from TSU M9000K to D884 per Appendage A: Smiths Industries Installation Drawing ED Reinstall leading edge inboard landing light per 737 MM INSTALLATION OF TRANSIENT SUPPRESSION UNIT AT TANK NO Gain access to the bussing plug D1586 on the right hand front spar through the extended leading edge flap cavity Remove leading edge inboard landing light per 737 MM to gain access for installation of TSU bracket. Tag and retain for reinstallation Install TSU bracket in the cavity outboard of the landing light per Appendage A: Smiths Industries Installation Drawing 0132-ED. Apply BMS5-95 or equivalent to mating surfaces and Hi-Loks prior to assembly Install ground studs, ground straps, placards P/N , 008, 009 and TSU per Appendage A: Smiths Industries Installation Drawing 0132-ED. Reference Boeing Standard Wiring Practices Manual Ch Torque TSU ground stud to 15 to 18 inch pounds Perform bonding resistance check, 8 milliohms maximum. Refer to Standard Wiring Practices Manual Apply a fillet seal of BMS5-95 or equivalent around the edges of all parts and fasteners. Then paint exposed surfaces of bracket and bottom exposed surface of TSU with primer (BMS type 2 or equivalent) and white paint (BMS type 1 or equivalent). NOTE: THE EXPOSED BOTTOM SURFACE OF THE TSU MAY BE PAINTED PRIOR TO INSTALLATION FOR EASE OF ASSEMBLY. ALL MOD A TSU UNITS ARE PAINTED AT THE FACTORY AND DO NOT REQUIRE PAINTING Remove plug D888 from D1586 Bussing plug for Tank 2. Remove clamps as required and reroute cable to newly installed TSU M9001K. The information contained herein is proprietary to Smiths Industries Inc, and shall not be reproduced, transferred to other documents, or disclosed to others in whole or part for any design, manufacturing, or for any other purpose except as specifically authorized in writing by Smiths Industries.

12 Page: 12 of Reroute cable following existing bundle traveling inboard and forward to newly installed TSU. Install new connector DM9001KP1, P/N BACC63CB14-3SN with new 90 backshell P/N BACC10KE14 (if required) and reference identification sleeve. Terminate to TSU connector J1. NOTE: SOME INSTALLATIONS WILL ALREADY HAVE A CONNECTOR WITH 90 BACKSHELL THAT CAN BE USED IF DESIRED, BUT NEW IDENTIFICATION SLEEVE IS REQUIRED Install new harness P/N XX per Appendage A: Smiths Industries Installation Drawing 0132-ED and connect connector DM9001KP2 P/N BACC63CB14-3S6 to TSU connector J Connect connector D888 to bussing plug D1586 at tank wall Install clamps on old harness that has been rerouted to TSU M9001K Install new clamps on new harness routed from TSU M9001K to D888 per Appendage A: Smiths Industries Installation Drawing ED Reinstall leading edge inboard landing light per 737 MM INSTALLATION OF TRANSIENT SUPPRESSION UNIT AT CENTER TANK Gain access to M291 Adapter Assembly Center Tank through the wheel well Install TSU bracket in the left hand wheel well per Appendage A, Smiths Industries Installation Drawing 0132-ED. Apply BMS5-95 or equivalent to mating surfaces and Hi-Loks prior to assembly Install ground studs, ground straps, placards P/N , 010, 011 and TSU per Appendage A: Smiths Industries Installation Drawing 0132-ED. Reference Boeing Standard Wiring Practices Manual Ch Torque TSU ground stud to 15 to 18 inch pounds. NOTE: FOR 3 AND 5 INSTALLATIONS ONLY, REMOVE WIRE BUNDLE CLAMP AND CLAMP BRACKET AND RELOCATE CLAMP AND WIRE BUNDLE TO TSU BRACKET LOWER R/H NUT PLATE PROVIDED Perform bonding resistance check, 8 milliohms maximum. Refer to Standard Wiring Practices Manual. The information contained herein is proprietary to Smiths Industries Inc, and shall not be reproduced, transferred to other documents, or disclosed to others in whole or part for any design, manufacturing, or for any other purpose except as specifically authorized in writing by Smiths Industries.

13 Page: 13 of Apply a fillet seal of BMS5-95 or equivalent around the edges of all parts and fasteners. Then paint exposed surfaces of bracket with primer (BMS type 2 or equivalent) and white paint (BMS type 1 or equivalent). NOTE: THE EXPOSED BOTTOM SURFACE OF THE TSU MAY BE PAINTED PRIOR TO INSTALLATION FOR EASE OF ASSEMBLY. ALL MOD A TSU UNITS ARE PAINTED AT THE FACTORY AND DO NOT REQUIRE PAINTING Remove plug D886 from M291 Adapter Assembly Center Tank. Remove clamps as required and reroute cable to newly installed TSU M9002K Reroute cable following existing bundle traveling outboard and up to newly installed TSU. Install new connector DM9002KP1, P/N BACC63CB14-3SN with new 90 backshell P/N BACC10KE14 (if applicable per Appendage A) and reference identification sleeve. Terminate to TSU connector J Install new harness P/N XX per Appendage A: Smiths Industries Installation Drawing 0132-ED and connect connector DM9002KP2 P/N BACC63CB14-3S6 to TSU connector J Connect connector D886 to M291 Adapter Assembly Center Tank at tank wall Install clamps on old harness that has been rerouted to TSU M9002K Install new clamps on new harness routed from TSU M9002K to D886 per Appendage A: Smiths Industries Installation Drawing ED INSTALLATION OF TRANSIENT SUPPRESSION UNIT AT AFT AUX TANK. NOTE: THIS INSTALLATION APPLIES ONLY TO AIRCRAFT WITH AUXILIARY TANKS Gain access to M643 Adapter Assembly Aft Aux Tank through the aft cargo area Install TSU bracket per Appendage A: Smiths Industries Installation Drawing 0132-ED (-7installation). Apply BMS5-95 or equivalent to mating surfaces and Hi-Loks prior to assembly Install ground studs, ground straps, placards P/N , 012, 013 and TSU per Appendage A: Smiths Industries Installation Drawing 0132-ED (-7installation). Reference Boeing Standard Wiring Practices Manual Ch Torque TSU ground stud to 15 to 18 inch pounds Perform bonding resistance check, 8 milliohms maximum. Refer to Standard Wiring Practices Manual. The information contained herein is proprietary to Smiths Industries Inc, and shall not be reproduced, transferred to other documents, or disclosed to others in whole or part for any design, manufacturing, or for any other purpose except as specifically authorized in writing by Smiths Industries.

14 Page: 14 of Apply a fillet seal of BMS5-95 or equivalent around the edges of all parts and fasteners. Then paint exposed surfaces of bracket and bottom exposed surface of TSU with primer (BMS type 2 or equivalent) and white paint (BMS type 1 or equivalent). NOTE: THE EXPOSED BOTTOM SURFACE OF THE TSU MAY BE PAINTED PRIOR TO INSTALLATION FOR EASE OF ASSEMBLY. ALL MOD A TSU UNITS ARE PAINTED AT THE FACTORY AND DO NOT REQUIRE PAINTING Remove plug D1812 from M643 Adapter Assembly Aft Aux Tank. Remove clamps as required and reroute cable to newly installed TSU M9003K Reroute cable following existing bundle traveling outboard and forward to newly installed TSU. Install new connector DM9003KP1, P/N BACC63CB14-3SN with new 90 backshell P/N BACC10KE14 and reference identification sleeve. Terminate to TSU connector J Install new harness P/N XX per Appendage A: Smiths Industries Installation Drawing 0132-ED and connect connector DM9003KP2 P/N BACC63CB14-3S6 to TSU connector J Connect connector D1812 to M643 Adapter Assembly Aft Aux Tank at tank wall Install clamps on old harness that has been rerouted to TSU M9003K Install new clamps on new harness routed from TSU M9003K to D1812 per Appendage A: Smiths Industries Installation Drawing ED. The information contained herein is proprietary to Smiths Industries Inc, and shall not be reproduced, transferred to other documents, or disclosed to others in whole or part for any design, manufacturing, or for any other purpose except as specifically authorized in writing by Smiths Industries.

15 Page: 15 of RESTORE AIRCRAFT TO NORMAL CONFIGURATION Close the following circuit breakers located in the P6 Panel: (1) FUEL QUANTITY (2) EP GROUND REFUELING (3) FUEL PANEL INDICATOR (4) FUEL QTY INDI-R TANK (5) FUEL QTY INDI-L TANK (6) FUEL QTY INDI-CTR TANK NOTE: IN 4-TANK COFIG, CB FOR CENTER TANK WOULD READ FUEL QTY INDI- CTR AND AUX TANK Remove safety locks in the Body Landing Gear doors left hand and right hand sides in accordance with AMM Remove safety locks in the Wing Landing Gear Doors left hand and right hand sides in accordance with AMM Remove safety locks from leading edge flaps and retract flaps in accordance with AMM Calibrate fuel quantity system in accordance with Report No ED CLOSE OUT Close any panels and doors opened to accomplish this EO Perform an operational check per the AMM of any systems disturbed during the installation. The information contained herein is proprietary to Smiths Industries Inc, and shall not be reproduced, transferred to other documents, or disclosed to others in whole or part for any design, manufacturing, or for any other purpose except as specifically authorized in writing by Smiths Industries.

16 Page: 16 of BILL OF MATERIAL Basis: Per aircraft Modified or Repaired Assemblies-N/A New Material See E. O. No ED, Appendage A, Installation Dwg. Item Number Part Number Nomenclature Vendor Remarks Qty Kit, TSU Install Smiths Ind /200 With Shelf Kit, TSU Install Smiths Ind / Kit, TSU Install Smiths Ind (Rect) Kit, TSU Install Smiths Ind (Circ)/ -400/ Old Materials Item Number Part Number Nomenclature Vendor Remarks Qty DCTU Smiths Ind /400/ Fuel Quantity Indicator Smiths Ind /400/500 3 The information contained herein is proprietary to Smiths Industries Inc, and shall not be reproduced, transferred to other documents, or disclosed to others in whole or part for any design, manufacturing, or for any other purpose except as specifically authorized in writing by Smiths Industries.

17 Attachment B Page: 1 of 1 WIRE FABRICATION LIST WIRE TYPE SPECIFICATIONS WIRE PART NUMBER CODE AWG OR SPECIFICATION COLOR # COND SHLD JKT M22759/ WHITE 1 NO N/A M22759/ WHITE 1 NO N/A M22759/ WHITE 1 NO N/A M22759/ WHITE 1 NO N/A M22759/ WHITE 1 NO N/A M22759/ WHITE 1 NO N/A M27500F22TG2T14 RD/BL 2 YES YES M27500F22TG1T14 WHITE 1 YES YES M27500F20TG3U14 RD/BL/YE 3 NO YES M27500F20TG2U14 RD/BL 2 NO YES M27500F22TG3U14 RD/BL/YE 3 NO N/A M27500F22TG2U14 RD/BL 2 NO N/A M27500F22TE2T14 RD/BL 2 YES YES M27500F22TE1T14 WHITE 1 YES YES M27500F20TE3U14 RD/BL/YE 3 NO YES M27500F20TE2U14 RD/BL 2 NO YES M27500F22TE3U14 RD/BL/YE 3 NO N/A M27500F22TE2U14 RD/BL 2 NO N/A M27500F22TE3T14 RD/BL/YE 3 YES YES M27500F22TE4U14 RD/BL/YE/GR 4 NO N/A M27500F18TE4U14 RD/BL/YE/GR 4 NO N/A M27500F18TE2U14 RD/BL 2 NO YES M22759/ WHITE 1 NO N/A M27500F24TG2T14 RD/BL 2 YES YES M27500F24TG2U14 RD/BL 2 NO N/A M27500F24TG3T14 RD/BL/YE 3 YES YES M27500F24TG3U14 RD/BL/YE 3 NO N/ M22759/ WHITE 1 NO N/A WIRE LENGTH WIRE WDM WIRE FT. CODE EFFECTIVITY NUMBER W002-6FT K-20 W002-6FT K-20 W002-6FT K-20 * W002-6FT The information contained herein is proprietary to Smiths Industries Inc, and shall not be reproduced, transferred to other documents, or disclosed to others in whole or part for any design, manufacturing, or for any other purpose except as specifically authorized in writing by Smiths Industries.

18 Attachment B Page: 2 of K-20 * For aircraft equipped with auxiliary fuel tank only The information contained herein is proprietary to Smiths Industries Inc, and shall not be reproduced, transferred to other documents, or disclosed to others in whole or part for any design, manufacturing, or for any other purpose except as specifically authorized in writing by Smiths Industries.

19 Attachment C Page: 1 of 3 WIRE NUMBER WIRE HOOKUP LIST 3 TANK CONFIGURATIONS 1 AND 1A FROM TO ITEM PIN STA ITEM PIN STA WIRE DIA NO. SHIELD TERM ACT EFFECTIVITY W GD534J-DC - P1 D P /P1 I 737- W GD534J-DC - P1 D P /P1 I 737- W GD534J-DC - P1 D P /P1 I 737- W GD534C-AC - P1 D895 5 P /P1 I 737- W GD534B-AC - P1 D895 6 P /P1 I 737- W GD534R-AC - P1 D P /P1 I 737- W K- 20 D P1-3 D895 5 P /02 AB 737- W K- 20 D P1-3 D895 6 P /02 AB 737- W K- 20 D P1-3 D P /02 AB 737- M9000K GD TANK 1 GD9000K-S /P1 AB 737- M9001K GD TANK 2 GD9001K-S /P1 AB 737- M9002K GD CWT GD9002K-S /P1 AB 737- M9000K TANK 1 GD9000K- AC /P1 AB 737- M9001K TANK 2 GD9001K- AC /P1 AB 737- M9002K CWT GD9002K /P1 AB 737- The information contained herein is proprietary to Smiths Industries Inc, and shall not be reproduced, transferred to other documents, or disclosed to others in whole or part for any design, manufacturing, or for any other purpose except as specifically authorized in writing by Smiths Industries.

20 Attachment C Page: 2 of 3 AC ACTION CODES AB I ADD WIRE & CONNECT BOTH ENDS CAP AND STOW "TO" END The information contained herein is proprietary to Smiths Industries Inc, and shall not be reproduced, transferred to other documents, or disclosed to others in whole or part for any design, manufacturing, or for any other purpose except as specifically authorized in writing by Smiths Industries.

21 Attachment C Page: 3 of 3 WIRE NUMBER WIRE HOOKUP LIST 3 TANK CONFIGURATIONS 2 AND 2A FROM TO ITEM PIN STA ITEM PIN STA WIRE DIA NO. SHIELD TERM ACT EFFECTIVITY W GD534Y-S - P2 D612 4 P /P2 I 737- W GD534N-S - P2 D880 4 P /P2 I 737- W GD534X-S - P2 D614 4 P /P2 I 737- W GD534C-AC - P2 D4256P 5 P /P2 I 737- W GD534B-AC - P2 D4256P 6 P /P2 I 737- W GD534R-AC - P2 D4256P 2 P /P2 I 737- W K- 20 D612 4 P2 D4256P 5 P /02 AB 737- W K- 20 D614 4 P2 D4256P 6 P /02 AB 737- W K- 20 D880 4 P2 D4256P 2 P /02 AB 737- M9000K GD TANK 1 GD9000K-S /P2 AB 737- M9001K GD TANK 2 GD9001K-S /P2 AB 737- M9002K GD CWT GD9002K-S /P2 AB 737- M9000K TANK 1 GD9000K- AC /P2 AB 737- M9001K TANK 2 GD9001K- AC /P2 AB 737- M9002K CWT GD9002K /P2 AB 737- The information contained herein is proprietary to Smiths Industries Inc, and shall not be reproduced, transferred to other documents, or disclosed to others in whole or part for any design, manufacturing, or for any other purpose except as specifically authorized in writing by Smiths Industries.

22 Attachment C Page: 4 of 3 AC ACTION CODES AB I ADD WIRE & CONNECT BOTH ENDS CAP AND STOW "TO" END The information contained herein is proprietary to Smiths Industries Inc, and shall not be reproduced, transferred to other documents, or disclosed to others in whole or part for any design, manufacturing, or for any other purpose except as specifically authorized in writing by Smiths Industries.

23 Attachment C Page: 5 of 3 WIRE NUMBER WIRE HOOKUP LIST 4 TANK CONFIGURATION FROM TO ITEM PIN STA ITEM PIN STA WIRE DIA NO. SHIELD TERM ACT EFFECTIVITY W GD534J-DC - P2 D P /P3 I 737- W GD534J-DC - P2 D P /P3 I 737- W GD534J-DC - P2 D P /P3 I 737- W GD534J-DC - P2 D P /P3 I 737- W GD534R-AC - P2 D4256P 2 P /P3 I 737- W GD534B-AC - P2 D4256P 6 P /P3 I 737- W GD534C-AC - P2 D4256P 5 P /P3 I 737- W GD534E-AC - P2 D4256P 10 P /P3 I 737- W K- 20 D P2-1 D4256P 5 P /02 AB 737- W K- 20 D P2-1 D4256P 6 P /02 AB 737- W K- 20 D P2-1 D4256P 2 P /02 AB 737- W K- 20 D P2-1 D4256P 10 P /02 AB 737- M9000K GD TANK 1 GD9000K-S /P3 AB 737- M9001K GD TANK 2 GD9001K-S /P3 AB 737- M9002K GD CWT GD9002K-S /P3 AB 737- The information contained herein is proprietary to Smiths Industries Inc, and shall not be reproduced, transferred to other documents, or disclosed to others in whole or part for any design, manufacturing, or for any other purpose except as specifically authorized in writing by Smiths Industries.

24 Attachment C Page: 6 of 3 M9003K GD AUX GD9003K-S /P3 AB 737- M9000K TANK 1 GD9000K- AC /P3 AB 737- M9001K TANK 2 GD9001K- AC /P3 AB 737- M9002K CWT GD9002K- AC /P3 AB 737- M9003K AUX GD9003K- AC /P3 AB 737- ACTION CODES AB I ADD WIRE & CONNECT BOTH ENDS CAP AND STOW "TO" END The information contained herein is proprietary to Smiths Industries Inc, and shall not be reproduced, transferred to other documents, or disclosed to others in whole or part for any design, manufacturing, or for any other purpose except as specifically authorized in writing by Smiths Industries.

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