Left Ignition Lead
 Figure 401/TASK 74-21-20-991-300- 12 (SHEET 1)
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 Left Ignition Lead
 Figure 401/TASK 74-21-20-991-300- 22 (SHEET 2)
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 Ignition Lead Assembly
 Figure 402/TASK 74-21-20-991-301

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 (6) Remove and discard the white chamfered silicone seal (10).
 POST SB 74-002

 (7) Remove and discard the blue symmetrical silicone seal (10).
 END of SB 74-002

 (8) Put blanking caps on the disconnected electrical connectors.

 (9) Remove the ignition lead from the clips which attach the ignition lead to the fan frame, the TGB and the bundle junction box.

 (10) Remove the bolt and retaining plate which attach the ignition lead to the bundle junction box cover.

 (11) Remove the strut fairings, from both sides of the tube bundle (6 o'clock position) for access to the clamps.

 (12) Remove the ignition lead from the clips at the 6 o'clock strut.

 (13) Remove the ignition lead CAUTION : BE CAREFUL WHEN YOU REMOVE THE IGNITION LEAD FROM THE STRUT

_______ BECAUSE THE IGNITION LEAD COULD BECOME DAMAGED.
 (a) Carefully pull the ignition lead aft at the 6 o'clock strut. Continue to move the ignition lead aft until it is through the 6 o'clock strut.
 (14) Remove and discard the two O-rings (20) from the lead.
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 Installation of the Left Ignition Lead
 1. Reason for the Job
__________________
 Self Explanatory
 2. Job Set-up Information
______________________
 A. Fixtures, Tools, Test and Support Equipment
 -------------------------------------------------------------------------------REFERENCE QTY DESIGNATION -------------------------------------------------------------------------------
No specific warning notice No specific access platform 1 m (3 ft. 3 in.) No specific Torque Wrench : range 33 to 37 lbf.in
 (0.37 to 0.41 m.daN) No specific Torque Wrench : range 36.00 to 220.00 lbf.in
 (0.40 to 2.60 m.daN) No specific Torque Wrench : range 96.00 to 900.00 lbf.in
 (1.00 to 10.00 m.daN)
 B. Consumable Materials
 -------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
Material No. CP5070  * vaseline (Ref. 70-30-00)
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 C. Expendable Parts
 -------------------------------------------------------------------------------FIG.ITEM |DESIGNATION |IPC-CSN -------------------------------------------------------------------------------
10 blue symmetrical silicone seal 74-21-10 01 -180
 10 blue symmetrical silicone seal 74-21-10 01 -180A R 10 blue symmetrical silicone seal 74-21-10 01A-180 R 10 white chamfered silicone seal 74-21-20 01 -180 R 10 white chamfered silicone seal 74-21-20 01 -180A R 10 white chamfered silicone seal 74-21-20 01A-180
 20 O-ring 74-21-10 01 -090
 20 O-ring 74-21-10 01A-090 R 20 O-ring 74-21-20 01 -090 R 20 O-ring 74-21-20 01A-090
 D. Referenced Information
 -------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
71-13-00-010-040 Opening of the Fan Cowl Doors
 71-13-00-410-040 Closing of the Fan Cowl Doors
 74-00-00-710-043 Operational Test of the Ignition System
 78-30-00-081-041 Make the Thrust Reverser Serviceable after

 Maintenance
 78-30-00-481-041 Make the Thrust Reverser Unserviceable for

 Maintenance
 78-36-00-010-040 Opening of the Thrust Reverser Doors
　
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