W DOC AIRBUS | AMM A320F

Removal of the EEC Wiring Harness (WF02) [PW11]

TASK 73-21-62-000-802-A
Removal of the EEC Wiring Harness (WF02)

WARNING: BE CAREFUL WHEN YOU DO WORK ON THE ENGINE AFTER SHUTDOWN. THE ENGINE CAN STAY HOT FOR A LONG TIME. IF YOU DO NOT OBEY THIS INSTRUCTION, INJURY CAN OCCUR.
CAUTION: DO NOT BEND OR TWIST THE HARNESS TOO MUCH. IF YOU DO, DAMAGE TO THE HARNESS CAN OCCUR.
ZONE: 400
FIN: 4218KS ** ON A/C NOT FOR ALL
1. Reason for the Job
Use this procedure to remove the harness (WF02).
2. Job Set-up Information
 A. Fixtures, Tools, Test and Support Equipment
REFERENCE
QTY
DESIGNATION
No specific
1
ACCESS PLATFORM 2M (6 FT) - ADJUSTABLE
No specific
AR
COVER - PROTECTION
No specific
1
PLIERS - JAWED, SOFT
No specific
AR
SAFETY CLIP - CIRCUIT BREAKER
 B. Work Zones and Access Panels
ZONE/ACCESS
ZONE DESCRIPTION
400
POWER PLANT, NACELLES AND PYLONS
FOR [4020KM1] (POWER PLANT-DEMOUNTABLE, ENG 1)
437AL, 438AR
FOR [4020KM2] (POWER PLANT-DEMOUNTABLE, ENG 2)
447AL, 448AR
 C. Referenced Information
REFERENCE
DESIGNATION
TASK 71-00-00-860-832-A
Procedure to Prevent Engine Motoring and to Stop the Electrical Supply to the EEC
TASK 71-13-00-010-802-A
Opening of the Fan Cowl Doors
F EEC Wiring Harness WF02
3. Job Set-up
Subtask 73-21-62-941-054-A ** ON A/C NOT FOR ALL
A. Safety Precautions
   (1) Do the procedure to prevent engine motoring and to stop the electrical supply to the Electronic Engine Control (EEC)
(Ref. AMM TASK 71-00-00-860-832).
   (2) On maintenance panel 80VU:
     (a) Make sure that ON legend on the SVCE INTERPHONE OVRD pushbutton switch is off.
Subtask 73-21-62-865-056-A ** ON A/C NOT FOR ALL
B. Open, safety and tag this(these) circuit breaker(s):
PANELDESIGNATIONFINLOCATION
** ON A/C NOT FOR ALL
49VUENGINE/1 AND 2/IGN/SYS A1JHA03
49VUANTI ICE/PROBES/AOA/14DA1D04
49VUANTI ICE/PROBES/PITOT/13DA1D02
49VUANTI ICE/RAIN/RPLNT/CAPT1DB1D01
49VUNAV PROBES/ADIRU 1/AND AOA 1/26VAC5FP1F07
105VUADIRS/ADIRU1/28VDC6FP1C02
122VUANTI ICE/WINDOWS/R4DG2W14
122VUANTI ICE/RAIN/RPLNT/F/O1DB2W11
122VUANTI ICE/WINDOWS/L4DG1X14
122VUANTI ICE/PROBES/2/TAT1DA2Y15
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
122VUANTI ICE/PROBES/1/TAT1DA1Z12
** ON A/C NOT FOR ALL
FOR FIN: 4020KM1 (POWER PLANTDEMOUNTABLE, ENG 1)
121VUICU A/ENG1 PWR SUPPLY22KS1R39
** ON A/C NOT FOR ALL
121VUPHMU/ENG195KS1P44
** ON A/C NOT FOR ALL
121VUICU A/ENG1 PWR SUPPLY22KS1R38
** ON A/C NOT FOR ALL
FOR FIN: 4020KM2 (POWER PLANTDEMOUNTABLE, ENG 2)
121VUICU A/ENG2 PWR SUPPLY22KS2R40
** ON A/C NOT FOR ALL
121VUPHMU/ENG295KS2P45
** ON A/C NOT FOR ALL
121VUICU A/ENG2 PWR SUPPLY22KS2R39
Subtask 73-21-62-865-057-A ** ON A/C NOT FOR ALL
WARNING: MAKE SURE THAT THE PROBE HEATER AND WINDOW HEATER CIRCUIT-BREAKERS ARE OPEN BEFORE YOU OPEN THE PHC AND WHC CIRCUIT BREAKERS. IF YOU DO NOT OBEY THIS SEQUENCE:
  • THE PROBES WILL BECOME TOO HOT.
  • THIS CAN CAUSE INJURY TO MAINTENANCE PERSONNEL AND/OR DAMAGE TO EQUIPMENT.
WARNING: OPEN CIRCUIT BREAKERS 2KS1 AND 2KS2 AFTER YOU OPEN THE IGNITION CIRCUIT BREAKERS. IF YOU DO NOT, THE CONTINUOUS IGNITION SYSTEM WILL BE ACTIVATED.
C. Open, safety and tag this(these) circuit breaker(s):
PANELDESIGNATIONFINLOCATION
** ON A/C NOT FOR ALL
49VUANTI ICE/PROBES/PHC/12DA1D03
122VUANTI ICE/WHC/25DG2W13
122VUANTI ICE/WHC/15DG1X13
122VUANTI ICE/PROBES/PHC/32DA3Y16
122VUANTI ICE/PROBES/PHC/22DA2Y12
FOR FIN: 4020KM1 (POWER PLANTDEMOUNTABLE, ENG 1)
49VUENGINE/1/FADEC A/AND EIU 12KS1A04
** ON A/C NOT FOR ALL
121VUENGINE/ENG1/FADEC B/AND EIU 14KS1R41
** ON A/C NOT FOR ALL
121VUENGINE/ENG1/FADEC B/AND EIU 14KS1R40
** ON A/C NOT FOR ALL
FOR FIN: 4020KM2 (POWER PLANTDEMOUNTABLE, ENG 2)
49VUENGINE/2/FADEC A/AND EIU 22KS2A05
** ON A/C NOT FOR ALL
121VUENGINE/ENG2/FADEC B/AND EIU24KS2Q40
** ON A/C NOT FOR ALL
121VUENGINE/ENG2/FADEC B/AND EIU24KS2R41
Subtask 73-21-62-010-058-A ** ON A/C NOT FOR ALL
D. Get Access
   (1) Open the fan cowl doors (Ref. AMM TASK 71-13-00-010-802):
     (a) FOR [4020KM1] (POWER PLANT-DEMOUNTABLE, ENG 1)
437AL 438AR
     (b) FOR [4020KM2] (POWER PLANT-DEMOUNTABLE, ENG 2)
447AL 448AR
   (2) Put an ACCESS PLATFORM 2M (6 FT) - ADJUSTABLE in position.
4. Procedure
Subtask 73-21-62-020-052-A ** ON A/C NOT FOR ALL
A. Removal of the EEC Wiring Harness WF02
CAUTION: WIPE CLEAN ALL PARTS AND TOOLS AS NECESSARY TO REMOVE UNWANTED DEBRIS AND PREVENT DAMAGE TO THE ENGINE.
   (1) Find the harness (WF02) (1) attached to the right hand side of the fan case.
   (2) Remove the harness (WF02) (1) from the engine as follows:
     (a) Disconnect the harness (WF02) connectors from the engine with the PLIERS - JAWED, SOFT as follows:
       1 Disconnect the connector (P79) from the interphone jack.
       2 Disconnect the connector (P402) from the pylon.
       3 Disconnect the connector (P406) from the pylon.
       4 Disconnect the harness (WF01) connector (P103) from the harness (WF02) (1).
       5 Disconnect the harness (W04) connector (P102) from the harness (WF02) (1).
       6 Disconnect the connector (P122) from the T2 probe harness.
       7 Disconnect the connector (P1) from the EEC.
       8 Disconnect the connector (P9) from the Prognostics and Health Management Unit (PHMU).
     (b) Remove the four bolts (2) and the harness (WF02) (1) from the bracket.
     (c) Remove the harness (WF02) (1) from the spring clips.
     (d) Remove the harness (WF02) (1) from the engine.
   (3) Installation of the protection covers
CAUTION: INSTALL PROTECTION COVERS ON ALL THE OPENINGS IMMEDIATELY TO PREVENT DAMAGE TO THE ENGINE.
     (a) Make sure that you install COVER - PROTECTION as necessary to prevent engine damage.
[Rev.10 from 2021] 2026.04.01 13:06:42 UTC
"Aviabrain" 2025