W DOC AIRBUS | AMM A320F

Removal of the Left Side Harness [CFMB]

TASK 71-51-43-000-001-A
Removal of the Left Side Harness

WARNING: BE CAREFUL WHEN YOU DO WORK ON THE ENGINE PARTS AFTER THE ENGINE SHUTDOWN. USE APPLICABLE THERMAL GLOVES. THE ENGINE PARTS CAN STAY HOT FOR ONE HOUR AFTER SHUTDOWN AND CAN BURN YOU.
ZONE: 400
FIN: 4216KS ** 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 1M(3 FT)
No specific
AR
COVER - PROTECTION
No specific
AR
SAFETY CLIP - CIRCUIT BREAKER
No specific
AR
WARNING NOTICE(S)
 B. Work Zones and Access Panels
ZONE/ACCESS
ZONE DESCRIPTION
400
POWER PLANT, NACELLES AND PYLONS
FOR [1000EM1] (ENGINE-1)
437AL, 438AR
FOR [1000EM2] (ENGINE-2)
447AL, 448AR
 C. Referenced Information
REFERENCE
DESIGNATION
TASK 71-13-00-010-040-B
Opening of the Fan Cowl Doors
F Upper Right Fan Zone Electrical Harness PRE SB RA32071-136
F Upper Left Fan Zone Electrical Harness (SB RA32029-15, SB RA32029-16)
F Lower Left Fan Zone Electrical Harness PRE SB RA32071-136
F Upper Right Fan Zone Electrical Harness POST SB RA32071-136
F Upper Left Fan Zone Electrical Harness (SB RA32071-150)
F Lower Left Fan Zone Electrical Harness POST SB RA32071-136
3. Job Set-up
Subtask 71-51-43-941-060-A ** ON A/C NOT FOR ALL
A. Safety Precautions
   (1) On the center pedestal, on the ENG panel 115VU:
     (a) Put a WARNING NOTICE(S) to tell persons not to start the engine.
   (2) Make sure that the engine 1(2) shutdown occurred not less than 5 minutes before you do this procedure.
   (3) On the overhead maintenance panel 50VU:
     (a) Make sure that the ON legend of the ENG/FADEC GND PWR/1(2) pushbutton switch is off.
     (b) Put a WARNING NOTICE(S) to tell persons not to energize the FADEC 1(2).
Subtask 71-51-43-865-080-A ** ON A/C NOT FOR ALL
WARNING: OPEN THE PROBE HEATER CIRCUIT-BREAKERS 1DA1(2), 3DA1(2,3), 4DA1(2,3) AND 5DA1(2,3) BEFORE ENG1(2)FADEC A and EIU 1(2) C/B'S 2KS1 AND 2KS2. IF YOU DO NOT OBEY THIS SEQUENCE:
  • THE PROBES WILL BECOME TOO HOT.
  • THIS CAN CAUSE DAMAGE TO EQUIPMENT AND INJURY TO MAINTENANCE PERSONNEL.
B. Open, safety and tag this(these) circuit breaker(s):
PANELDESIGNATIONFINLOCATION
** ON A/C NOT FOR ALL
49VUCOM/CVR/SPLY2RKE14
49VUCOM/CVR/CTL4RKE13
** ON A/C NOT FOR ALL
49VUENGINE/1 AND 2/IGN/SYS A1JHA03
49VUANTI ICE/PROBES/AOA/14DA1D04
49VUANTI ICE/PROBES/PITOT/13DA1D02
** ON A/C NOT FOR ALL
49VUANTI ICE/RAIN/RPLNT/CAPT1DB1D01
** ON A/C NOT FOR ALL
49VUCOM/CVR/SPLY23RKE14
49VUCOM/CVR/CTL26RKE13
** ON A/C NOT FOR ALL
121VURCDR/DFDR7TUK16
121VUHYDRAULIC/HYD POWER/Y3803GXN30
122VUANTI ICE/WINDOWS/R4DG2W14
122VUANTI ICE/WINDOWS/L4DG1X14
122VUANTI ICE/PROBES/2/PITOT3DA2Y14
122VUANTI ICE/PROBES/2/AOA4DA2Y13
122VUANTI ICE/PROBES/2/STATIC5DA2Y11
122VUANTI ICE/PROBES/3/PITOT3DA3Z16
122VUANTI ICE/PROBES/3/AOA4DA3Z15
122VUANTI ICE/PROBES/3/STATIC5DA3Z14
122VUANTI ICE/PROBES/1/STATIC5DA1Z13
** ON A/C NOT FOR ALL
122VUANTI ICE/RAIN/RPLNT/F/O1DB2W11
** ON A/C NOT FOR ALL
123VUY HYD/ELEC/PUMP3802GXAB06
123VUY HYD/ELEC/ELEC PUMP/NORM3801GXAB03
FOR FIN: 1000EM1 (ENGINE1)
49VUENGINE/1/FIRE DET/LOOP A7WD1A06
49VUENGINE/1/FADEC A/AND EIU 12KS1A04
121VUENGINE/IGN/ENG1/SYS B3JH1P41
121VUENGINE/IGN/ENG1/SYS A BAT2JH1P39
121VUENGINE/ENG1 AND 2 FIRE EXTIG/BTL1/SQUIB/B2WE1Q44
121VUENGINE/ENG1 AND 2 FIRE EXTIG/BTL1/SQUIB/A1WE1Q43
121VUENGINE/ENG1/FIRE DET/LOOP B8WD1Q38
121VUENGINE/ENG1/FADEC B/AND EIU 14KS1R41
122VUELEC/GCU/12XU1T26
FOR FIN: 1000EM2 (ENGINE2)
49VUENGINE/2/FIRE DET/LOOP B8WD2A07
49VUENGINE/2/FADEC A/AND EIU 22KS2A05
121VUENGINE/IGN/ENG2/SYS B3JH2P42
121VUENGINE/IGN/ENG2/SYS A BAT2JH2P40
121VUENGINE/ENG1 AND 2 FIRE EXTIG/BTL2/SQUIB/B2WE2Q42
121VUENGINE/ENG1 AND 2 FIRE EXTIG/BTL2/SQUIB/A1WE2Q41
121VUENGINE/ENG2/FADEC B4KS2Q40
121VUENGINE/ENG2/FIRE DET/LOOP A7WD2Q39
122VUELEC/GCU/22XU2T27
Subtask 71-51-43-010-063-A ** ON A/C NOT FOR ALL
C. Get Access
   (1) Open the fan cowls: (Ref. AMM TASK 71-13-00-010-040)
   (2) FOR [1000EM1] (ENGINE-1)
437AL 438AR
   (3) FOR [1000EM2] (ENGINE-2)
447AL 448AR
   (4) Put the ACCESS PLATFORM 1M(3 FT) in position.
4. Procedure
Subtask 71-51-43-020-060-A ** ON A/C NOT FOR ALL
A. Removal of the Left Side Harness
NOTE: To open the flip-lock clamps and line blocks, turn the captive screws or captive bolts 1/4 turn counterclockwise to disengage the cam nuts.
NOTE: Loosely attach the clamp(s), anti-rotation lug(s) if applicable, and bolt(s) to the brackets from which they were removed to make it easier for installation.
   (1) Disconnect the electrical connector 447VC-A from the pylon junction box.
F Upper Right Fan Zone Electrical Harness PRE SB RA32071-136 ** ON A/C NOT FOR ALL
F Upper Right Fan Zone Electrical Harness POST SB RA32071-136 ** ON A/C NOT FOR ALL
   (2) Disconnect the electrical connector 4005VC from the electrical connector 4005VC-A.
   (3) Open the line blocks (10) that attach the harness (5) to the brackets at station 167.
   (4) If necessary, remove the rubber supports from the line blocks (10).
   (5) Remove the harness (5) from the rubber supports.
   (6) Open the line block (10) that attaches the harness to the bracket at station 174, at the top left side of the engine.
F Upper Left Fan Zone Electrical Harness (SB RA32029-15, SB RA32029-16) ** ON A/C NOT FOR ALL
F Upper Left Fan Zone Electrical Harness (SB RA32071-150) ** ON A/C NOT FOR ALL

BEFORE SPIB NO. CFM02255MW1.

   (7) Open the line block (15) that attaches the harness (5) to the bracket at station 176.
   (8) Open the line block (20) that attaches the harness (5) to the brackets at station 185.
   (9) If necessary, remove the rubber supports from the line blocks (10), (15) and (20) and remove the harness (5).

CONFIG-1

   (10) Open the 1 flip-lock clamp (30), the 3 flip-lock clamps (35), the 1 flip-lock clamp (45) and the line block (40) along station 191.

CONFIG-2

   (11) Open the 2 flip-lock clamps (25), 2 flip-lock clamps (35), 1 flip-lock clamp (45) and the line block (40) along station 191.

END CONFIG-2

   (12) Remove the harness (5) from the line block rubber support and the flip-lock clamps.
   (13) Disconnect the electrical connector 4000EL-A from the fuel filter differential pressure switch.
   (14) Disconnect the electrical connector 4003EN-A from the oil pressure transmitter.
   (15) Disconnect the electrical connector 4000EN-A from the low oil pressure switch.
   (16) Open the flip-lock clamp (30) and remove the harness (5).
   (17) Cut the fiberglass tying tape from the ground wires, as necessary.
   (18) Remove the nuts (60), lockwashers (65) and washers (70) that attach the ground wires to the ground studs at station 191.
F Upper Left Fan Zone Electrical Harness (SB RA32029-15, SB RA32029-16) ** ON A/C NOT FOR ALL
F Upper Left Fan Zone Electrical Harness (SB RA32071-150) ** ON A/C NOT FOR ALL
WIRE
GROUND
GD9951DC/1
GD9951DC
GD9951DC/2
GD9951DC
GD9952DC/1
GD9952DC
GD9952DC/2
GD9952DC
GD9953DC/1
GD9953DC
GD9953DC/2
GD9953DC
GD9954DC/1
GD9954DC
GD9954DC/2
GD9954DC
GD9955DC
GD9955DC
GD9956DC
GD9956DC
GD9957DC
GD9957DC
   (19) Open the line block (55) that attaches the harness to the bracket at station 167.
F Upper Left Fan Zone Electrical Harness (SB RA32029-15, SB RA32029-16) ** ON A/C NOT FOR ALL
F Upper Left Fan Zone Electrical Harness (SB RA32071-150) ** ON A/C NOT FOR ALL
   (20) Open the line blocks (40) and (50) that attach the harness (5) to the brackets at station 158.
   (21) Disconnect the electrical connector 1074GK-A or 3074GD-A, as applicable, from the hydraulic pressure caution switch.

POST SB RA32071-150

   (22) Cut the fiberglass tying tape from the harness (5), where it has a divide, in the area shown.

END OF POST SB RA32071-150

POST SB RA32029-15

   (23) Disconnect the harness (5) electrical connector from the adapter on the bracket.
   (24) Remove the nut, bolt, washer and clamps (11) that attach the jumper harness (12) to the hydraulic suction hose.
   (25) Remove the jumper harness (12).

END OF POST SB RA32029-15

   (26) Open the flip-lock clamp (30) and remove the harness (5).
   (27) Cut the fiberglass tying tape from the ground wires, as necessary.
   (28) Remove the nuts (60), lockwashers (65) and washers (70) that attach the ground wires to the ground studs at station 158.
F Upper Left Fan Zone Electrical Harness (SB RA32029-15, SB RA32029-16) ** ON A/C NOT FOR ALL
F Upper Left Fan Zone Electrical Harness (SB RA32071-150) ** ON A/C NOT FOR ALL
WIRE
GROUND
GD9958DC/1
GD9958DC
GD9958DC/2
GD9958DC
GD9959DC/1
GD9959DC
GD9959DC/2
GD9959DC
GD9960DC/1
GD9960DC
GD9960DC/2
GD9960DC
GD9961DC/1
GD9961DC
GD9961DC/2
GD9961DC
GD9962DC/1
GD9962DC
GD9962DC/2
GD9962DC
GD9963DC/1
GD9963DC
GD9963DC/2
GD9963DC
GD9964DC
GD9964DC
   (29) Disconnect the electrical connector 4007EN-A from the oil chip detector.
F Lower Left Fan Zone Electrical Harness PRE SB RA32071-136 ** ON A/C NOT FOR ALL
F Lower Left Fan Zone Electrical Harness POST SB RA32071-136 ** ON A/C NOT FOR ALL
   (30) Disconnect the electrical connector 4002EN-A from the oil quantity transmitter.
   (31) Open the line blocks (40) and (55) that attach the harness (5) to the brackets at station 199.
   (32) Open the line block (40) that attaches the harness (5) to the bracket at station 191.
   (33) If necessary, remove the rubber supports from the line blocks.
   (34) Remove the harness (5) from the rubber supports.
   (35) Remove the bolt (75) and the clamp (80) that attach the harness (5) to the bracket on station 199.
   (36) Disconnect the electrical connector 4000KC-A from the high pressure fuel shutoff.
   (37) Open the line blocks (50), (55) and the flip-lock clamp (105) along station 158.
   (38) Remove the harness (5) from the line blocks (50) and (55) rubber supports and the flip-lock clamp (105).

AFTER SPIB NO. CFM02255MW1
F Upper Left Fan Zone Electrical Harness (SB RA32029-15, SB RA32029-16) ** ON A/C NOT FOR ALL
F Upper Left Fan Zone Electrical Harness (SB RA32071-150) ** ON A/C NOT FOR ALL

   (39) Remove the clamps and bolt (17) that attach the harness (5) to the bracket at station 176.
   (40) Remove the clamps and bolt (22) that attach the harness (5) to the bracket at station 185.
   (41) If necessary, remove the rubber supports from the line block (10) and remove the harness (5).
   (42) Open the flip-lock clamp (32) at station 191.
   (43) Remove the nuts, bolts and clamps (32) that attach the harness (5) to the brackets at station 191.
   (44) Remove the bolt and clamp (42) and (47) that attach the harness (5) to the brackets at station 191.
   (45) Remove the harness (5) from the flip-lock clamps.
   (46) Disconnect the electrical connector 4000EL-A from the fuel filter differential pressure switch.
   (47) Disconnect the electrical connector 4003EN-A from the oil pressure transmitter.
   (48) Disconnect the electrical connector 4000EN-A from the low oil pressure switch.
   (49) Open the flip-lock clamp (30) and remove the harness (5).
   (50) Cut the fiberglass tying tape from the ground wires, as necessary.
   (50) Remove the nuts (60), lockwashers (65) and washers (70) that attach the ground wires to the ground studs at station 191.
F Upper Left Fan Zone Electrical Harness (SB RA32029-15, SB RA32029-16) ** ON A/C NOT FOR ALL
F Upper Left Fan Zone Electrical Harness (SB RA32071-150) ** ON A/C NOT FOR ALL
WIRE
GROUND
GD9951DC/1
GD9951DC
GD9951DC/2
GD9951DC
GD9952DC/1
GD9952DC
GD9952DC/2
GD9952DC
GD9953DC/1
GD9953DC
GD9953DC/2
GD9953DC
GD9954DC/1
GD9954DC
GD9954DC/2
GD9954DC
GD9955DC
GD9955DC
GD9956DC
GD9956DC
GD9957DC
GD9957DC
   (51) Remove the bolt, clamps and anti-rotation lug (57) that attach the harness (5) to the bracket at station 167.
F Upper Left Fan Zone Electrical Harness (SB RA32029-15, SB RA32029-16) ** ON A/C NOT FOR ALL
F Upper Left Fan Zone Electrical Harness (SB RA32071-150) ** ON A/C NOT FOR ALL
   (52) Remove the bolts, clamps and anti-rotation lugs (43) that attach the harness (5) to the bracket at station 158.
   (53) Remove the bolts and clamp (33) that attach the harness (5) to the bracket at the station 158.
   (54) Disconnect the electrical connector 1074GK-A or 3074GD-A, as applicable, from the hydraulic pressure caution switch and remove the harness (5).

POST SB RA32071-150

   (55) Cut the fiberglass tying tape from the harness (5), where it has a divide, in the area shown.

END OF POST SB RA32071-150

POST SB RA32029-15

   (56) Disconnect the harness (5) electrical connector from the adapter on the bracket.
   (57) Remove the nut, bolt, washer and clamps (11) that attach the jumper harness (12) to the hydraulic suction hose.
   (58) Remove the jumper harness (12).

END OF POST SB RA32029-15

POST SB RA32029-16

   (59) Remove the nut, bolt, washer and clamps (13) that attach the harness (5) to the hydraulic suction hose.

END OF POST SB RA32029-16

   (60) Remove the harness (5).
   (61) Cut the fiberglass tying tape from the ground wires, as necessary.
   (62) Remove the nuts (60), lockwashers (65) and washers (70) that attach the ground wires to the ground studs at station 158.
F Upper Left Fan Zone Electrical Harness (SB RA32029-15, SB RA32029-16) ** ON A/C NOT FOR ALL
F Upper Left Fan Zone Electrical Harness (SB RA32071-150) ** ON A/C NOT FOR ALL
WIRE
GROUND
GD9958DC/1
GD9958DC
GD9958DC/2
GD9958DC
GD9959DC/1
GD9959DC
GD9959DC/2
GD9959DC
GD9960DC/1
GD9960DC
GD9960DC/2
GD9960DC
GD9961DC/1
GD9961DC
GD9961DC/2
GD9961DC
GD9962DC/1
GD9962DC
GD9962DC/2
GD9962DC
GD9963DC/1
GD9963DC
GD9963DC/2
GD9963DC
GD9964DC
GD9964DC
   (63) Disconnect the electrical connector 4007EN-A from the oil chip detector.
F Lower Left Fan Zone Electrical Harness PRE SB RA32071-136 ** ON A/C NOT FOR ALL
F Lower Left Fan Zone Electrical Harness POST SB RA32071-136 ** ON A/C NOT FOR ALL
   (64) Disconnect the electrical connector 4002EN-A from the oil quantity transmitter.
   (65) Open the line blocks (40) and (55) that attach the harness (5) to the brackets at station 199.
   (66) Remove the bolt, clamps and anti-rotation lug (49) that attach the harness(5) to the bracket at station 199.
   (67) Open the line block (40) that attaches the harness (5) to the bracket at station 191.
   (68) If necessary, remove the rubber supports from the line blocks.
   (69) Remove the harness (5) from the rubber supports.
   (70) Remove the bolt (75) and clamp (80) that attach the harness (5) to the bracket at station 199.
   (71) Disconnect the electrical connector 4000KC-A from the high pressure fuel shutoff.
   (72) Open the line blocks (50) and (55) at station 158.
   (73) Remove the bolt, clamps and anti-rotation lug (58) that attach the harness (5) to the bracket at station 158.
   (74) Remove the bolt and clamp (107) that attach the harness (5) to the bracket at station 158.
   (75) Remove the harness (5) from the line blocks (50) and (55) rubber supports.

END SPIB NO. CFM02255MW1

   (76) Remove the bolt (95) and the clamp (100) that attach the harness (5) to the bracket at station 158.
   (77) Remove the bolt (75), the nut (85) and the clamp (90) that attach the harness (5) to the bracket on the gearbox.
   (78) Disconnect the electrical connector 4004EN-A from the oil temperature sensor.
   (79) Disconnect the electrical connector 4001EN-A from the oil differential pressure switch.
   (80) Disconnect the electrical connector 1030GK-A or 3030GD-A, as applicable, from the hydraulic pump bypass valve.
   (81) Remove the electrical harness (5) from the engine.
   (82) Put COVER - PROTECTION on the electrical connectors.
[Rev.10 from 2021] 2026.04.01 12:51:08 UTC
"Aviabrain" 2025