3. Job Set-up
__________
 Subtask 74-21-20-020-057

 A. Remove the ignition lead (Ref. TASK 74-21-20-000-002).
 4. Procedure
_________
 (Ref. Fig. 803/TASK 74-21-20-991-305)
 Subtask 74-21-20-160-055

 A. Clean the Ignition Lead
 (1) Clean the damaged area of the ignition lead with a lint-free cloth R that is moist with trichloroethylene (Material No. CP1008) or R stoddard solvent (Material No. CP2011) or acetone (Material No. R CP1039) or ardrox 552 (Material No. CP2559) or turco ind 79 (Material R No. CP2560) or mag-chem teksol (Material No. CP2566) or degreasol 99R R (Material No. CP2584) or mag-chem skysol (Material No. CP2656) .
 (2) Let the surface of the ignition lead dry.
 Subtask 74-21-20-350-057

 B. Repair the Chafe Guard
 (1) Apply a thin layer of RTV 732 (Material No. CP2242) to the damaged area of the chafe guard.

 (2) Push the damaged chafe guard back into place.

 5. Close-up
________
 Subtask 74-21-20-420-057

 A. Install the ignition lead (Ref. TASK 74-21-20-400-002).
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 Repair of the Chafe Guard
 Figure 803/TASK 74-21-20-991-305

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 SPARK IGNITER - REMOVAL/INSTALLATION

____________________________________
 TASK 74-21-30-000-002
 Removal of the Spark Igniter
R WARNING : BE SURE EXCITERS ARE DE-ENERGIZED FOR AT LEAST 5 MINUTES BEFORE
_______ R WORKING ON THE IGNITION SYSTEM. VOLTAGE OUTPUT CAN BE DANGEROUS. DO R NOT TOUCH THE ELECTRICAL CONTACTS, EXCITERS MAY CONTAIN AN ELECTRICAL R CHARGE EVEN WHEN THEY ARE NOT ENERGIZED.
R
 CAUTION : BE CAREFUL WITH THE IGNITION LEAD TO PREVENT DAMAGE TO THE CONDUIT
_______
 AND THE INTERNAL WIRES.

 1. Reason for the Job
__________________
 This task gives the data to remove the right spark igniter (system A) or the left spark igniter (system B).
 2. Job Set-up Information
______________________
 A. Fixtures, Tools, Test and Support Equipment
 -------------------------------------------------------------------------------REFERENCE QTY DESIGNATION -------------------------------------------------------------------------------
No specific circuit breaker(s) safety clip(s)
 No specific protective covers
 No specific warning notice

 B. Referenced Information
 -------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
71-13-00-010-040 Opening of the Fan Cowl Doors
 78-30-00-481-041 Make the Thrust Reverser Unserviceable for

 Maintenance
 78-36-00-010-040 Opening of the Thrust Reverser Doors
 74-21-30-991-300 Fig. 401

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 3. Job Set-up
__________
 Subtask 74-21-30-941-052
 A. Safety Precautions
 (1) On the center pedestal, on the ENG panel 115VU:

 (a) Put a warning notice 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 to tell persons not to energize the FADEC 1(2).

 Subtask 74-21-30-010-055
 B. Get Access
 (1) Open the fan cowl doors (Ref. TASK 71-13-00-010-040):
 FOR 1000EM1
 437AL, 438AR
 FOR 1000EM2
 447AL, 448AR

 Subtask 74-21-30-040-054
 C. Make the thrust reverser unserviceable (Ref. TASK 78-30-00-481-041).
 Subtask 74-21-30-010-059
 D. Open the thrust reverser doors (Ref. TASK 78-36-00-010-040):
 FOR 1000EM1
 451AL, 452AR
 FOR 1000EM2
 461AL, 462AR

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