W DOC AIRBUS | AMM A320F

Mechanical Cleaning of the Ignition Exciter [CFML]

TASK 74-11-05-140-801-A
Mechanical Cleaning of the Ignition Exciter

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.
WARNING: BE CAREFUL WHEN YOU USE CONSUMABLE MATERIALS. OBEY THE MATERIAL MANUFACTURER'S INSTRUCTIONS AND YOUR LOCAL REGULATIONS.
ZONE: 400
1. Reason for the Job
Self explanatory
2. Job Set-up Information
 A. Fixtures, Tools, Test and Support Equipment
REFERENCE
QTY
DESIGNATION
No specific
1
BRUSH - BRISTLED, FIBER, SOFT
No specific
AR
WARNING NOTICE(S)
No specific
Torque wrench: range to between 59 and 51 lbf.in (0.67 and 0.58 m.daN ) T
No specific
Torque wrench: range to between 162 and 138 lbf.in (1.83 and 1.56 m.daN ) T
 B. Consumable Materials
REFERENCE
DESIGNATION
(Material No.CP1039)
acetone
(Material No.CP2011)
stoddard solvent
(Material No.CP2559)
ardrox 552
(Material No.CP2560)
turco ind 79
(Material No.CP2566)
mag-chem teksol
(Material No.CP2584)
degreasol 99 R
(Material No.CP2656)
mag-chem skysol
(Material No.14SBA1)
Textile-Lint free Cotton -
 C. Work Zones and Access Panels
ZONE/ACCESS
ZONE DESCRIPTION
400
POWER PLANT, NACELLES AND PYLONS
FOR [4020KM1] (POWER PLANT-DEMOUNTABLE, ENGINE 1)
437AL, 438AR, 452AR
FOR [4020KM2] (POWER PLANT-DEMOUNTABLE, ENGINE 2)
447AL, 448AR, 462AR
 D. Referenced Information
REFERENCE
DESIGNATION
TASK 70-70-00-910-804-A
Electrical Standard Practices
TASK 71-13-00-010-803-A
Opening of the Fan Cowl Doors
TASK 71-13-00-410-803-A
Closing of the Fan Cowl Doors
TASK 74-00-00-710-803-A
Ignition Test (Menu Mode)
TASK 74-11-05-000-801-A
Removal of Ignition Exciter 1
TASK 74-11-05-000-802-A
Removal of Ignition Exciter 2
TASK 74-11-05-400-801-A
Installation of Ignition Exciter 1
TASK 74-11-05-400-802-A
Installation of Ignition Exciter 2
TASK 78-30-00-040-809-A
Deactivation of the Thrust Reverser System for Ground Maintenance
TASK 78-30-00-440-809-A
Reactivation of the Thrust Reverser System after Ground Maintenance
TASK 78-36-00-010-806-A
Opening of the Thrust Reverser Cowl Doors
TASK 78-36-00-410-806-A
Closing of the Thrust Reverser Cowl Doors
3. Job Set-up
Subtask 74-11-05-941-053-A
A. Safety Precautions
   (1) On the center pedestal, on ENG panel 115VU:
     (a) Make sure that the ENG/MODE selector switch is in the NORM position.
     (b) Make sure that the ENG/MASTER 1(2) control switch was in the OFF position not less than five minutes before you do this procedure.
     (c) Put WARNING NOTICE(S) in position to tell persons not to operate:
  • The ENG/MODE selector switch
  • The ENG/MASTER 1(2) control switch.
   (2) On the ENG section of maintenance panel 50VU:
     (a) Make sure that the ON legend of the FADEC GND PWR/1(2) pushbutton switch is off.
     (b) Put a WARNING NOTICE(S) in position to tell persons not to energize FADEC 1(2).
Subtask 74-11-05-865-055-A
B. Open, safety and tag these circuit breakers in this sequence:
PANELDESIGNATIONFINLOCATION
** ON A/C ALL
49VUENGINE/1 AND 2/IGN/SYS A1JHA03
FOR FIN: 4020KM1 (POWER PLANTDEMOUNTABLE, ENGINE 1)
121VUENGINE/IGN/ENG1/SYS B3JH1P41
FOR FIN: 4020KM2 (POWER PLANTDEMOUNTABLE, ENGINE 2)
121VUENGINE/IGN/ENG2/SYS B3JH2P42
Subtask 74-11-05-010-056-A
C. Get Access
   (1) Open the fan cowl doors (Ref. AMM TASK 71-13-00-010-803):
     (a) FOR [4020KM1] (POWER PLANT-DEMOUNTABLE, ENGINE 1)
437AL 438AR
     (b) FOR [4020KM2] (POWER PLANT-DEMOUNTABLE, ENGINE 2)
447AL 448AR
Subtask 74-11-05-040-053-A
D. Deactivation of the Thrust Reverser System for Ground Maintenance
WARNING: YOU MUST DEACTIVATE THE THRUST REVERSER BEFORE YOU DO WORK ON OR AROUND IT. IF YOU DO NOT, THE THRUST REVERSER CAN OPERATE ACCIDENTALLY AND CAUSE AN INJURY AND/OR DAMAGE.
   (1) Do the deactivation of the thrust reverser system for ground maintenance (Ref. AMM TASK 78-30-00-040-809).
Subtask 74-11-05-010-057-A
E. Get Access
   (1) Open the right thrust reverser cowl-doors (Ref. AMM TASK 78-36-00-010-806):
     (a) FOR [4020KM1] (POWER PLANT-DEMOUNTABLE, ENGINE 1)
452AR
     (b) FOR [4020KM2] (POWER PLANT-DEMOUNTABLE, ENGINE 2)
462AR
Subtask 74-11-05-020-055-A
F. Remove the exciter box shroud lid (Ref. AMM TASK 74-11-05-000-801) and (Ref. AMM TASK 74-11-05-000-802).
   (1) Remove the four bolts that attach the exciter box shroud lid to the exciter shroud box.
Subtask 74-11-05-020-056-A
G. Disconnect the power supply electrical harness connector and the ignition lead (Ref. AMM TASK 74-11-05-000-801) and (Ref. AMM TASK 74-11-05-000-802).
   (1) Disconnect the power supply electrical harness connector from the electrical input connector on the forward side of the ignition exciter.
   (2) Disconnect the ignition lead from the ignition lead connector on the aft side of the ignition exciter.
4. Procedure
Subtask 74-11-05-140-050-A
A. Clean the Electrical Connector
   (1) Clean the electrical connector with a BRUSH - BRISTLED, FIBER, SOFT and stoddard solvent (Material No.CP2011) or acetone (Material No.CP1039) or ardrox 552 (Material No.CP2559) or turco ind 79 (Material No.CP2560) or mag-chem teksol (Material No.CP2566) or degreasol 99 R (Material No.CP2584) or mag-chem skysol (Material No.CP2656) .
   (2) Remove deposits with a Textile-Lint free Cotton - (Material No.14SBA1) .
Subtask 74-11-05-420-055-A
B. Connect the Power Supply and the Ignition Lead
   (1) Connect the ignition lead to the electrical input connector on the aft side of the exciter.
     (a) TORQUE the connector nut to between 162 and 138 lbf.in (1.83 and 1.56 m.daN ) T.
   (2) Connect the power supply electrical harness connector to the electrical input connector on the forward side of the exciter (Ref. AMM TASK 70-70-00-910-804).
Subtask 74-11-05-420-056-A
C. Install the exciter box shroud lid (Ref. AMM TASK 74-11-05-400-801) and (Ref. AMM TASK 74-11-05-400-802).
   (1) Install the four bolts that attach the exciter box shroud lid to the exciter shroud box.
   (2) TORQUE the four bolts to between 59 and 51 lbf.in (0.67 and 0.58 m.daN ) T.
Subtask 74-11-05-865-056-A
D. Remove the safety clips and tags and close these circuit breakers in this sequence:
PANELDESIGNATIONFINLOCATION
** ON A/C ALL
49VUENGINE/1 AND 2/IGN/SYS A1JHA03
FOR FIN: 4020KM1 (POWER PLANTDEMOUNTABLE, ENGINE 1)
121VUENGINE/IGN/ENG1/SYS B3JH1P41
FOR FIN: 4020KM2 (POWER PLANTDEMOUNTABLE, ENGINE 2)
121VUENGINE/IGN/ENG2/SYS B3JH2P42
5. Close-up
Subtask 74-11-05-410-054-A
A. Close Access
   (1) Make sure that the work area is clean and clear of tools and other items.
   (2) Close the right thrust reverser cowl-doors (Ref. AMM TASK 78-36-00-410-806):
     (a) FOR [4020KM1] (POWER PLANT-DEMOUNTABLE, ENGINE 1)
452AR
     (b) FOR [4020KM2] (POWER PLANT-DEMOUNTABLE, ENGINE 2)
462AR
Subtask 74-11-05-440-052-A
B. Do the reactivation of the thrust reverser system after ground maintenance (Ref. AMM TASK 78-30-00-440-809).
Subtask 74-11-05-410-055-A
C. Close Access
   (1) Close the fan cowl doors (Ref. AMM TASK 71-13-00-410-803):
     (a) FOR [4020KM1] (POWER PLANT-DEMOUNTABLE, ENGINE 1)
437AL 438AR
     (b) FOR [4020KM2] (POWER PLANT-DEMOUNTABLE, ENGINE 2)
447AL 448AR
   (2) Remove the WARNING NOTICE(S).
Subtask 74-11-05-710-051-A
D. Test
   (1) Do the ignition test (menu mode) (Ref. AMM TASK 74-00-00-710-803).
[Rev.10 from 2021] 2026.04.01 03:08:44 UTC
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