W DOC AIRBUS | AMM A320F

Removal of the Wing-Tank-Inner-Cell Group B Harness

TASK 28-42-43-000-007-A
Removal of the Wing-Tank-Inner-Cell Group B Harness

WARNING: PUT THE SAFETY DEVICES AND THE WARNING NOTICES IN POSITION BEFORE YOU START A TASK ON OR NEAR:
  • THE FLIGHT CONTROLS
  • THE FLIGHT CONTROL SURFACES
  • THE LANDING GEAR AND THE RELATED DOORS
  • COMPONENTS THAT MOVE.
MOVEMENT OF COMPONENTS CAN KILL OR CAUSE INJURY TO PERSONS AND/OR CAN CAUSE DAMAGE TO THE EQUIPMENT.
ZONE: 540
ZONE: 574
ZONE: 640
ZONE: 674
FIN: 14QT1 ** ON A/C NOT FOR ALL
FIN: 14QT2 ** ON A/C NOT FOR ALL
1. Reason for the Job
Self explanatory
2. Job Set-up Information
 A. Fixtures, Tools, Test and Support Equipment
REFERENCE
QTY
DESIGNATION
No specific
AR
ACCESS PLATFORM 4M (13 FT)
No specific
1
ACCESS PLATFORM 4M (13 FT)-ADJUSTABLE
No specific
AR
CAP - BLANKING
No specific
AR
SAFETY BARRIER(S)
No specific
AR
SAFETY CLIP - CIRCUIT BREAKER
No specific
AR
SPATULA - PLASTIC
No specific
AR
STRING - DRAW
No specific
AR
TAPE - SELF-AMALGAMATING
98D57004013000
1
HOOK-COVER (RIB 2 SURGE DOORS)
 B. Work Zones and Access Panels
ZONE/ACCESS
ZONE DESCRIPTION
540
FUEL TANK
574
FALSE SPAR BOX
640
FUEL TANK
674
FALSE SPAR BOX
FOR [14QT1] (HARNESS-CHAN B, L WING TK INR)
540AB, 540AZ, 540BB, 540CB, 540DB, 540EB, 540FB, 540GB, 540HB, 540JB, 540KB, 574BB
FOR [14QT2] (HARNESS-CHAN B, R WING TK INR)
640AB, 640AZ, 640BB, 640CB, 640DB, 640EB, 640FB, 640GB, 640HB, 640JB, 640KB, 674BB
 C. Referenced Information
REFERENCE
DESIGNATION
TASK 28-10-00-910-001-A
Safety Procedures When You Do Work in a Fuel Tank
TASK 28-10-00-910-002-A
Access to the Fuel Tanks and the Work Areas
TASK 28-12-46-000-001-A
Removal of the Overpressure Protector Outlet
TASK 28-25-00-650-001-A
Pressure Defuel
TASK 28-25-00-650-003-A
To Drain Remaining Fuel from the Wing Tanks and the Center Tank
TASK 28-25-00-650-003-A-01
To Drain Remaining Fuel from the Wing Tanks and the Center Tank
TASK 57-27-11-000-001-A
Removal of the Access Panel
TASK 57-27-11-000-002-A
Removal of the Access Panel
F Wing Tank - Access Panel Locations
F Electrical Harness 13QT1(13QT2) and 14QT1(14QT2) - Cable Routing
F Electrical Harness 14QT1(14QT2) at RIBS 2 and 9, and at STRGR 11 - Location and Detail
F Electrical Harness 13QT1(13QT2) at RIBS 1 and 2 - Location and Detail ** ON A/C NOT FOR ALL
F Electrical Harness 14QT1(14QT2) at RIBS 3, 7, 11, and 13 - Location and Detail
F Electrical Harness 13QT1(13QT2) and 14QT1(14QT2) at RIBS 2, 2/3, 6/7 and 9 - Location and Detail
F Electrical Harness 13QT1(13QT2) and 14QT1(14QT2) at RIBS 6, 13 and 15 and at the Rear Spar - Detail and Location
F Electrical Harness 13QT1(13QT2) at RIBS 1 and 2 - Location and Detail ** ON A/C NOT FOR ALL
FOR [14QT1] (HARNESS-CHAN B, L WING TK INR)
TASK 28-10-00-910-002-A
Access to the Fuel Tanks and the Work Areas
TASK 28-12-46-000-001-A
Removal of the Overpressure Protector Outlet
TASK 57-27-11-000-001-A
Removal of the Access Panel
TASK 57-27-11-000-002-A
Removal of the Access Panel
TASK 57-27-12-000-002-A
Removal of the Rib 2 Access Panel 540AZ(640AZ) or 540BZ(640BZ)
TASK 57-51-37-000-009-A
Removal of the Access Door
FOR [14QT2] (HARNESS-CHAN B, R WING TK INR)
TASK 28-10-00-910-002-A
Access to the Fuel Tanks and the Work Areas
TASK 28-12-46-000-001-A
Removal of the Overpressure Protector Outlet
TASK 57-27-11-000-001-A
Removal of the Access Panel
TASK 57-27-11-000-002-A
Removal of the Access Panel
TASK 57-27-12-000-002-A
Removal of the Rib 2 Access Panel 540AZ(640AZ) or 540BZ(640BZ)
TASK 57-51-37-000-009-A
Removal of the Access Door
3. Job Set-up
Subtask 28-42-43-941-056-A ** ON A/C NOT FOR ALL
A. Safety Precautions
WARNING: BEFORE YOU DO WORK IN OR NEAR A FUEL TANK, MAKE SURE THAT YOU OBEY ALL THE SAFETY PROCEDURES. THIS WILL PREVENT INJURY TO PERSONS AND/OR DAMAGE TO THE AIRCRAFT.
   (1) You must obey the fuel safety procedures (Ref. AMM TASK 28-10-00-910-001) when you do work in a fuel tank.
   (2) Put the SAFETY BARRIER(S) in position.
Subtask 28-42-43-650-052-A ** ON A/C NOT FOR ALL
B. Fuel Configuration
   (1) Defuel the applicable fuel tank (Ref. AMM TASK 28-25-00-650-001).
   (2) Drain the remaining fuel from the applicable fuel tank (Ref. AMM TASK 28-25-00-650-003).
Subtask 28-42-43-865-068-A ** ON A/C NOT FOR ALL
C. Open, safety and tag this(these) circuit breaker(s):
PANELDESIGNATIONFINLOCATION
** ON A/C NOT FOR ALL
49VUFUEL/FQI/CHAN/11QTA13
49VUFUEL/XFR VALVE1/WING/R2QPA11
49VUFUEL/XFR VALVE1/WING/L1QPA10
** ON A/C NOT FOR ALL
121VUFUEL/CTR TK/PUMPS1 AND 2/CTL AND IND32QAR26
121VUFUEL/CTR TK/PUMPS1 AND 2/CTL AND IND31QAR25
** ON A/C NOT FOR ALL
121VUFUEL/FQI/CHANNEL/1 AND 28QTL26
121VUFUEL/HI/LVL/SPLY1QJL25
121VUFUEL/FQI/CHAN/22QTM27
121VUFUEL/XFR VALVE2/WING/R4QPM23
121VUFUEL/XFR VALVE2/WING/L3QPM22
Subtask 28-42-43-010-064-A ** ON A/C NOT FOR ALL
D. Get Access
F Wing Tank - Access Panel Locations ** ON A/C NOT FOR ALL
   (1) Put the ACCESS PLATFORM 4M (13 FT) in position below the applicable zone 540 (640).
   (2) Remove the applicable panels (Ref. AMM TASK 28-10-00-910-002), (Ref. AMM TASK 57-27-11-000-001) , (Ref. AMM TASK 57-27-11-000-002) and (Ref. AMM TASK 28-12-46-000-001):
     (a) FOR [14QT1] (HARNESS-CHAN B, L WING TK INR)
  • remove 540AB, 540BB, 540CB, 540DB, 540EB, 540FB, 540GB, 540HB, 540JB, 540KB, 574BB
  • open 540AZ
     (b) FOR [14QT2] (HARNESS-CHAN B, R WING TK INR)
  • remove 640AB, 640BB, 640CB, 640DB, 640EB, 640FB, 640GB, 640HB, 640JB, 640KB, 674BB
  • open 640AZ.
   (3) Install the 98D57004013000 HOOK-COVER (RIB 2 SURGE DOORS) on the door 540AZ (640AZ).
Subtask 28-42-43-010-064-C ** ON A/C NOT FOR ALL
D. Get Access
F Wing Tank - Access Panel Locations ** ON A/C NOT FOR ALL
   (1) Put the ACCESS PLATFORM 4M (13 FT)-ADJUSTABLE in position below the applicable zone 540 (640).
   (2) Remove the applicable access panels that follow:
     (a) FOR [14QT1] (HARNESS-CHAN B, L WING TK INR)
Remove 540AB, 540BB, 540CB, 540DB, 540EB, 540FB, 540GB, 540HB, 540JB and 540KB (Ref. AMM TASK 28-10-00-910-002), (Ref. AMM TASK 57-27-11-000-001), (Ref. AMM TASK 57-27-11-000-002) and (Ref. AMM TASK 28-12-46-000-001).
     (b) FOR [14QT2] (HARNESS-CHAN B, R WING TK INR)
Remove 640AB, 640BB, 640CB, 640DB, 640EB, 640FB, 640GB, 640HB, 640JB and 640KB (Ref. AMM TASK 28-10-00-910-002), (Ref. AMM TASK 57-27-11-000-001), (Ref. AMM TASK 57-27-11-000-002) and (Ref. AMM TASK 28-12-46-000-001).
   (3) Remove the applicable access doors that follow:
     (a) FOR [14QT1] (HARNESS-CHAN B, L WING TK INR)
Remove 574BB (Ref. AMM TASK 57-51-37-000-009).
     (b) FOR [14QT2] (HARNESS-CHAN B, R WING TK INR)
Remove 674BB (Ref. AMM TASK 57-51-37-000-009).
   (4) Remove the applicable RIB2 access panels that follow:
     (a) FOR [14QT1] (HARNESS-CHAN B, L WING TK INR)
Remove 540AZ (Ref. AMM TASK 57-27-12-000-002).
     (b) FOR [14QT2] (HARNESS-CHAN B, R WING TK INR)
Remove 640AZ (Ref. AMM TASK 57-27-12-000-002).
4. Procedure
Subtask 28-42-43-020-093-A ** ON A/C NOT FOR ALL
A. Removal of the Wing-Tank Inner-Cell Group B Harness 14QT1 (14QT2)
   (1) Remove the harness 14QT1 (14QT2) at RIB 1, RIB 2 and RIB 3 as follows:
F Electrical Harness 13QT1(13QT2) and 14QT1(14QT2) - Cable Routing ** ON A/C NOT FOR ALL
F Electrical Harness 14QT1(14QT2) at RIBS 2 and 9, and at STRGR 11 - Location and Detail ** ON A/C NOT FOR ALL
F Electrical Harness 13QT1(13QT2) at RIBS 1 and 2 - Location and Detail ** ON A/C NOT FOR ALL
F Electrical Harness 13QT1(13QT2) at RIBS 1 and 2 - Location and Detail ** ON A/C NOT FOR ALL
F Electrical Harness 14QT1(14QT2) at RIBS 3, 7, 11, and 13 - Location and Detail ** ON A/C NOT FOR ALL
     (a) Get access through the opening 540AB(640AB) and the access door 540AZ(640AZ) to:
  • the fuel probes 22QT1(22QT2), 24QT1(24QT2) and 26QT1(26QT2)
  • the fuel sensors 15QJ1(15QJ2), 23QJ1(23QJ2) and 24QJ1(24QJ2).
     (b) Disconnect the terminal connectors (2) from the terminal block of the fuel probes 22QT1(22QT2), 24QT1(24QT2) and 26QT1(26QT2).
     (c) Remove and discard the terminal connectors (2) from the ends of the harness 14QT1(14QT2).
     (d) Loosen the clamp screws (21), the connector screws (20) and (23) and remove the cables from the sensors 15QJ1(15QJ2), 23QJ1(23QJ2) and 24QJ1(24QJ2).
     (e) Remove and discard the cable-ties (1) from the harness 14QT1(14QT2) and the fuel probes 22QT1(22QT2), 24QT1(24QT2) and 26QT1(26QT2).
     (f) Remove the bolt (4) to release the P clip (3).
     (g) Remove the harness 14QT1(14QT2) from the P clip (3) and use the bolt (4) to temporarily install the P clip (3).
     (h) Loosen the clamp screws (21), the connector screws (20) and (23) and remove the cable from the sensor 39QJ1(39QJ2).
     (i) Remove and discard the cable-ties (1) from the harness 14QT1(14QT2).
   (2) Remove the harness 14QT1 (14QT2) at RIB 7 as follows:
F Electrical Harness 13QT1(13QT2) and 14QT1(14QT2) - Cable Routing ** ON A/C NOT FOR ALL
F Electrical Harness 13QT1(13QT2) and 14QT1(14QT2) - Cable Routing ** ON A/C NOT FOR ALL
F Electrical Harness 13QT1(13QT2) and 14QT1(14QT2) - Cable Routing ** ON A/C NOT FOR ALL
F Electrical Harness 13QT1(13QT2) and 14QT1(14QT2) at RIBS 2, 2/3, 6/7 and 9 - Location and Detail ** ON A/C NOT FOR ALL
F Electrical Harness 13QT1(13QT2) and 14QT1(14QT2) at RIBS 6, 13 and 15 and at the Rear Spar - Detail and Location ** ON A/C NOT FOR ALL
WARNING: USE PROTECTIVE GOGGLES AND GLOVES WHEN YOU REMOVE OR INSTALL LOCKWIRE. EACH TIME YOU CUT LOCKWIRE, REMOVE AND DISCARD IT IMMEDIATELY. LOOSE LOCKWIRE CAN CUT YOU OR MAKE YOU BLIND, AND/OR CAN CAUSE DAMAGE.
     (a) Get access through the opening 574BB(674BB).
     (b) Disconnect the plug connector (33) from the connector 4040VC1(4040VC2) (34).
     (c) Put a CAP - BLANKING on the plug connector (33).
     (d) Remove and discard the lockwire from the nut (32).
     (e) Remove the nut (32) and the washer (31) from the connector (34).
     (f) Get access through the opening 540BB(640BB) to the rear spar.
     (g) Use a SPATULA - PLASTIC to remove the sealant from between the connector (34) and the tank wall.
     (h) Remove the connector (34) and discard the O-ring (30).
     (i) Remove and discard the lockwire and loosen the clamp screws (36).
     (j) Remove and discard the lockwire from the backshell connector (35).
     (k) Remove the backshell connector (35) from the connector (34).
     (l) Retain the backshell connector (35) and the connector (34).
     (m) Remove the bolt (4) from the P clip (3), then remove and retain the P clip (3).
     (n) Disconnect the terminal connectors (2) from the fuel probe 28QT1(28QT2).
     (o) Remove and discard the terminal connectors (2) from the terminal block of the harness 14QT1(14QT2).
     (p) Remove and discard the cable-ties (1) from the harness 14QT1(14QT2) and the fuel probe 28QT1(28QT2) body.
   (3) Remove the harness 14QT1 (14QT2) at RIB 9 as follows:
F Electrical Harness 14QT1(14QT2) at RIBS 2 and 9, and at STRGR 11 - Location and Detail ** ON A/C NOT FOR ALL
     (a) Get access through the opening 540CB(640CB).
     (b) Loosen the clamp screw (21), the connector screws (20) and (23) and remove the cable from the sensor 25QJ1(25QJ2).
     (c) Remove and discard the cable-ties (1) from the harness 14QT1(14QT2).
   (4) Remove the harness 14QT1 (14QT2) at RIB 11 as follows:
F Electrical Harness 13QT1(13QT2) and 14QT1(14QT2) - Cable Routing ** ON A/C NOT FOR ALL
F Electrical Harness 13QT1(13QT2) and 14QT1(14QT2) - Cable Routing ** ON A/C NOT FOR ALL
F Electrical Harness 13QT1(13QT2) and 14QT1(14QT2) - Cable Routing ** ON A/C NOT FOR ALL
F Electrical Harness 14QT1(14QT2) at RIBS 3, 7, 11, and 13 - Location and Detail ** ON A/C NOT FOR ALL
     (a) Get access through the opening 540FB(640FB).
     (b) Disconnect the terminal connectors (2) from the terminal block of the fuel probe 30QT1(30QT2).
     (c) Remove and discard the terminal connectors (2) from the harness 14QT1(14QT2).
     (d) Remove and discard the cable-ties (1) from the harness 14QT1(14QT2).
   (5) Remove the harness 14QT1 (14QT2) at RIB 13 as follows:
F Electrical Harness 13QT1(13QT2) and 14QT1(14QT2) - Cable Routing ** ON A/C NOT FOR ALL
F Electrical Harness 13QT1(13QT2) and 14QT1(14QT2) - Cable Routing ** ON A/C NOT FOR ALL
F Electrical Harness 13QT1(13QT2) and 14QT1(14QT2) - Cable Routing ** ON A/C NOT FOR ALL
F Electrical Harness 13QT1(13QT2) and 14QT1(14QT2) at RIBS 2, 2/3, 6/7 and 9 - Location and Detail ** ON A/C NOT FOR ALL
F Electrical Harness 13QT1(13QT2) and 14QT1(14QT2) at RIBS 6, 13 and 15 and at the Rear Spar - Detail and Location ** ON A/C NOT FOR ALL
F Electrical Harness 14QT1(14QT2) at RIBS 3, 7, 11, and 13 - Location and Detail ** ON A/C NOT FOR ALL
     (a) Get access through the opening 540GB(640GB).
     (b) Loosen the clamp screw (21), the connector screws (20) and (23) and remove the cable from the sensor 26QJ1(26QJ2).
     (c) Remove and discard the cable-ties (1) from the harness 14QT1(14QT2).
     (d) Get access through the opening 540HB(640HB).
     (e) Disconnect the terminal connectors (2) from the terminal block of the fuel probe 32QT1(32QT2).
     (f) Remove and discard the terminal connectors (2) from the harness 14QT1(14QT2).
     (g) Remove and discard the cable-ties (1) from the harness 14QT1(14QT2) and the fuel probe 32QT1(32QT2) body.
   (6) Remove the harness 14QT1 (14QT2) at RIB 14 as follows:
F Electrical Harness 13QT1(13QT2) and 14QT1(14QT2) - Cable Routing ** ON A/C NOT FOR ALL
F Electrical Harness 13QT1(13QT2) and 14QT1(14QT2) - Cable Routing ** ON A/C NOT FOR ALL
F Electrical Harness 13QT1(13QT2) and 14QT1(14QT2) - Cable Routing ** ON A/C NOT FOR ALL
F Electrical Harness 13QT1(13QT2) and 14QT1(14QT2) at RIBS 6, 13 and 15 and at the Rear Spar - Detail and Location ** ON A/C NOT FOR ALL
     (a) Loosen the clamp screw (21), the connector screws (20) and (23) and remove the cables from the sensor 27QJ1(27QJ2).
     (b) Remove and discard the cable-ties (1) from the harness 14QT1(14QT2).
   (7) Remove the harness 14QT1 (14QT2) at RIB 15 as follows:
     (a) Get access through the opening 540KB(640KB).
     (b) Disconnect the plug connector (33) from the connector 4046VC1(4046VC2) (34).
     (c) Put a blanking cap on the plug connector (33).
     (d) Remove the nuts (40) and the bolts (42) and the anti-rotation plate (41).
     (e) Remove the nut (32) and the washer (31) from the connector (34).
     (f) Get access through the opening 540JB(640JB).
     (g) Use a plastic spatula to remove the sealant from between the connector (34) and the tank wall.
     (h) Remove the connector (34) from the rib mounting and discard the O-ring (30).
     (i) Remove and discard the lockwire and loosen the clamp screws (36).
     (j) Remove and discard the lockwire from the backshell connector (35).
     (k) Remove the backshell connector (35) from the connector (34).
     (l) Retain the backshell connector (35) and the connector (34).
     (m) Remove and discard the cable-ties (1) from the harness 14QT1(14QT2).
     (n) Attach applicable lengths of STRING - DRAW to each of the ends of the disconnected harness 14QT1(14QT2). This will help to install the new harness.
     (o) Put TAPE - SELF-AMALGAMATING around each of the ends of the disconnected harness 14QT1(14QT2). This will help to let it move more easily through the conduit.
   (8) Remove the harness 14QT1 (14QT2) from between RIB 6 and RIB 7 as follows:
     (a) Get access through the opening 540BB(640BB).
     (b) Carefully pull the harness 14QT1(14QT2) from the inboard part of the conduit, until the ends attached to the string come into view.
     (c) Carefully pull the harness 14QT1(14QT2) from the outboard part of the conduit, until the ends attached to the string come into view.
     (d) Carefully pull the full harness 14QT1(14QT2) and the connector 4046VC1(4046VC2) until all the string come into view.
     (e) Identify and mark the string. This will help to install the new harness.
     (f) Remove and discard the tape from the harness 14QT1(14QT2) and remove the harness from the string.
     (g) Remove the harness 14QT1(14QT2) from the aircraft.
     (h) Leave the string in position for the installation.
Subtask 28-42-43-020-093-C ** ON A/C NOT FOR ALL
A. Removal of the Wing-Tank Inner-Cell Group B Harness 14QT1 (14QT2)
   (1) Remove the harness 14QT1 (14QT2) at RIB 1, RIB 2 and RIB 3 as follows:
F Electrical Harness 13QT1(13QT2) and 14QT1(14QT2) - Cable Routing ** ON A/C NOT FOR ALL
F Electrical Harness 14QT1(14QT2) at RIBS 2 and 9, and at STRGR 11 - Location and Detail ** ON A/C NOT FOR ALL
F Electrical Harness 13QT1(13QT2) at RIBS 1 and 2 - Location and Detail ** ON A/C NOT FOR ALL
F Electrical Harness 13QT1(13QT2) at RIBS 1 and 2 - Location and Detail ** ON A/C NOT FOR ALL
F Electrical Harness 14QT1(14QT2) at RIBS 3, 7, 11, and 13 - Location and Detail ** ON A/C NOT FOR ALL
     (a) Get access through the opening 540AB(640AB) and the access door 540AZ(640AZ) to:
  • the fuel probes 22QT1(22QT2), 24QT1(24QT2) and 26QT1(26QT2)
  • the fuel sensors 15QJ1(15QJ2), 23QJ1(23QJ2) and 24QJ1(24QJ2).
     (b) Disconnect the terminal connectors (2) from the terminal block of the fuel probes 22QT1(22QT2), 24QT1(24QT2) and 26QT1(26QT2).
     (c) Remove and discard the terminal connectors (2) from the ends of the harness 14QT1(14QT2).
     (d) Loosen the clamp screws (21), the connector screws (20) and (23) and remove the cables from the sensors 15QJ1(15QJ2), 23QJ1(23QJ2) and 24QJ1(24QJ2).
     (e) Remove and discard the cable-ties (1) from the harness 14QT1(14QT2) and the fuel probes 22QT1(22QT2), 24QT1(24QT2) and 26QT1(26QT2).
     (f) Remove and keep the nylon spacers (5).
     (g) Remove the bolt (4) to release the P clip (3).
     (h) Remove the harness 14QT1(14QT2) from the P clip (3) and use the bolt (4) to temporarily install the P clip (3).
     (i) Loosen the clamp screws (21), the connector screws (20) and (23) and remove the cable from the sensor 39QJ1(39QJ2).
     (j) Remove and discard the cable-ties (1) from the harness 14QT1(14QT2).
   (2) Remove the harness 14QT1 (14QT2) at RIB 7 as follows:
F Electrical Harness 13QT1(13QT2) and 14QT1(14QT2) - Cable Routing ** ON A/C NOT FOR ALL
F Electrical Harness 13QT1(13QT2) and 14QT1(14QT2) - Cable Routing ** ON A/C NOT FOR ALL
F Electrical Harness 13QT1(13QT2) and 14QT1(14QT2) - Cable Routing ** ON A/C NOT FOR ALL
F Electrical Harness 13QT1(13QT2) and 14QT1(14QT2) at RIBS 2, 2/3, 6/7 and 9 - Location and Detail ** ON A/C NOT FOR ALL
F Electrical Harness 13QT1(13QT2) and 14QT1(14QT2) at RIBS 6, 13 and 15 and at the Rear Spar - Detail and Location ** ON A/C NOT FOR ALL
WARNING: USE PROTECTIVE GOGGLES AND GLOVES WHEN YOU REMOVE OR INSTALL LOCKWIRE. EACH TIME YOU CUT LOCKWIRE, REMOVE AND DISCARD IT IMMEDIATELY. LOOSE LOCKWIRE CAN CUT YOU OR MAKE YOU BLIND, AND/OR CAN CAUSE DAMAGE.
     (a) Get access through the opening 574BB(674BB).
     (b) Disconnect the plug connector (33) from the connector 4040VC1(4040VC2) (34).
     (c) Put a CAP - BLANKING on the plug connector (33).
     (d) Remove and discard the lockwire from the nut (32).
     (e) Remove the nut (32) and the washer (31) from the connector (34).
     (f) Get access through the opening 540BB(640BB) to the rear spar.
     (g) Use a SPATULA - PLASTIC to remove the sealant from between the connector (34) and the tank wall.
     (h) Remove the connector (34) and discard the O-ring (30).
     (i) Remove and discard the lockwire and loosen the clamp screws (36).
     (j) Remove and discard the lockwire from the backshell connector (35).
     (k) Remove the backshell connector (35) from the connector (34).
     (l) Keep the backshell connector (35) and the connector (34).
     (m) Remove the bolt (4) from the P clip (3), then remove and keep the P clip (3).
     (n) Disconnect the terminal connectors (2) from the fuel probe 28QT1(28QT2).
     (o) Remove and discard the terminal connectors (2) from the terminal block of the harness 14QT1(14QT2).
     (p) Remove and discard the cable-ties (1) from the harness 14QT1(14QT2) and the fuel probe 28QT1(28QT2) body.
   (3) Remove the harness 14QT1 (14QT2) at RIB 9 as follows:
F Electrical Harness 14QT1(14QT2) at RIBS 2 and 9, and at STRGR 11 - Location and Detail ** ON A/C NOT FOR ALL
     (a) Get access through the opening 540CB(640CB).
     (b) Loosen the clamp screw (21), the connector screws (20) and (23) and remove the cable from the sensor 25QJ1(25QJ2).
     (c) Remove and discard the cable-ties (1) from the harness 14QT1(14QT2).
   (4) Remove the harness 14QT1 (14QT2) at RIB 11 as follows:
F Electrical Harness 13QT1(13QT2) and 14QT1(14QT2) - Cable Routing ** ON A/C NOT FOR ALL
F Electrical Harness 13QT1(13QT2) and 14QT1(14QT2) - Cable Routing ** ON A/C NOT FOR ALL
F Electrical Harness 13QT1(13QT2) and 14QT1(14QT2) - Cable Routing ** ON A/C NOT FOR ALL
F Electrical Harness 14QT1(14QT2) at RIBS 3, 7, 11, and 13 - Location and Detail ** ON A/C NOT FOR ALL
     (a) Get access through the opening 540FB(640FB).
     (b) Disconnect the terminal connectors (2) from the terminal block of the fuel probe 30QT1(30QT2).
     (c) Remove and discard the terminal connectors (2) from the harness 14QT1(14QT2).
     (d) Remove and discard the cable-ties (1) from the harness 14QT1(14QT2).
   (5) Remove the harness 14QT1 (14QT2) at RIB 13 as follows:
F Electrical Harness 13QT1(13QT2) and 14QT1(14QT2) - Cable Routing ** ON A/C NOT FOR ALL
F Electrical Harness 13QT1(13QT2) and 14QT1(14QT2) - Cable Routing ** ON A/C NOT FOR ALL
F Electrical Harness 13QT1(13QT2) and 14QT1(14QT2) - Cable Routing ** ON A/C NOT FOR ALL
F Electrical Harness 13QT1(13QT2) and 14QT1(14QT2) at RIBS 2, 2/3, 6/7 and 9 - Location and Detail ** ON A/C NOT FOR ALL
F Electrical Harness 13QT1(13QT2) and 14QT1(14QT2) at RIBS 6, 13 and 15 and at the Rear Spar - Detail and Location ** ON A/C NOT FOR ALL
F Electrical Harness 14QT1(14QT2) at RIBS 3, 7, 11, and 13 - Location and Detail ** ON A/C NOT FOR ALL
     (a) Get access through the opening 540GB(640GB).
     (b) Loosen the clamp screw (21), the connector screws (20) and (23) and remove the cable from the sensor 26QJ1(26QJ2).
     (c) Remove and discard the cable-ties (1) from the harness 14QT1(14QT2).
     (d) Get access through the opening 540HB(640HB).
     (e) Disconnect the terminal connectors (2) from the terminal block of the fuel probe 32QT1(32QT2).
     (f) Remove and discard the terminal connectors (2) from the harness 14QT1(14QT2).
     (g) Remove and discard the cable-ties (1) from the harness 14QT1(14QT2) and the fuel probe 32QT1(32QT2) body.
   (6) Remove the harness 14QT1 (14QT2) at RIB 14 as follows:
F Electrical Harness 13QT1(13QT2) and 14QT1(14QT2) - Cable Routing ** ON A/C NOT FOR ALL
F Electrical Harness 13QT1(13QT2) and 14QT1(14QT2) - Cable Routing ** ON A/C NOT FOR ALL
F Electrical Harness 13QT1(13QT2) and 14QT1(14QT2) - Cable Routing ** ON A/C NOT FOR ALL
F Electrical Harness 13QT1(13QT2) and 14QT1(14QT2) at RIBS 6, 13 and 15 and at the Rear Spar - Detail and Location ** ON A/C NOT FOR ALL
     (a) Loosen the clamp screw (21), the connector screws (20) and (23) and remove the cables from the sensor 27QJ1(27QJ2).
     (b) Remove and discard the cable-ties (1) from the harness 14QT1(14QT2).
   (7) Remove the harness 14QT1 (14QT2) at RIB 15 as follows:
     (a) Get access through the opening 540KB(640KB).
     (b) Disconnect the plug connector (33) from the connector 4046VC1(4046VC2) (34).
     (c) Put a blanking cap on the plug connector (33).
     (d) Remove the nuts (40) and the bolts (42) and the anti-rotation plate (41).
     (e) Remove the nut (32) and the washer (31) from the connector (34).
     (f) Get access through the opening 540JB(640JB).
     (g) Use a plastic spatula to remove the sealant from between the connector (34) and the tank wall.
     (h) Remove the connector (34) from the rib mounting and discard the O-ring (30).
     (i) Remove and discard the lockwire and loosen the clamp screws (36).
     (j) Remove and discard the lockwire from the backshell connector (35).
     (k) Remove the backshell connector (35) from the connector (34).
     (l) Retain the backshell connector (35) and the connector (34).
     (m) Remove and discard the cable-ties (1) from the harness 14QT1(14QT2).
     (n) Attach applicable lengths of STRING - DRAW to each of the ends of the disconnected harness 14QT1(14QT2). This will help to install the new harness.
     (o) Put TAPE - SELF-AMALGAMATING around each of the ends of the disconnected harness 14QT1(14QT2). This will help to let it move more easily through the conduit.
   (8) Remove the harness 14QT1 (14QT2) from between RIB 6 and RIB 7 as follows:
     (a) Get access through the opening 540BB(640BB).
     (b) Carefully pull the harness 14QT1(14QT2) from the inboard part of the conduit, until the ends attached to the string come into view.
     (c) Carefully pull the harness 14QT1(14QT2) from the outboard part of the conduit, until the ends attached to the string come into view.
     (d) Carefully pull the full harness 14QT1(14QT2) and the connector 4046VC1(4046VC2) until all the string come into view.
     (e) Identify and mark the string. This will help to install the new harness.
     (f) Remove and discard the tape from the harness 14QT1(14QT2) and remove the harness from the string.
     (g) Remove the harness 14QT1(14QT2) from the aircraft.
     (h) Leave the string in position for the installation.
[Rev.10 from 2021] 2026.04.02 07:04:04 UTC
"WTRUIB" 2025