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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