(4) If necessary, install the fuel drain tube to the fuel nozzle adjacent to the six o'clock borescope plug. TORQUE the coupling nuts on the fuel drain tube to between 120 and 135 lbf.in (1.35 and 1.52 m.daN) and safety with lockwire 0.8 mm dia. (Material No. CP8001)
(5) If necessary, remove the protective caps and install the spark igniters (Ref. TASK 74-21-30-400-002)
Subtask 72-42-00-290-062
F. If necessary, do the borescope inspection of the outer side of the outer liner to confirm the extent of outer liner axial cracks (Ref. TASK 72-42-00-290-006).
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G. Do a fuel nozzle leak check.
(1) If you removed the drain tube from the fuel nozzle adjacent to the 6 o'clock borescope plug, do a fuel nozzle leak check (Ref. TASK 73-11-40-790-002).
5. Close-up
________ Subtask 72-42-00-410-057
A. Close Access
(1) Make sure that the work area is clean and clear of tool(s) and other items.
(2) Close the thrust reverser doors: (Ref. TASK 78-36-00-410-040) FOR 1000EM1 451AL, 452AR FOR 1000EM2 461AL, 462AR
(3) Remove the access platform(s). Subtask 72-42-00-440-055
B. Make the thrust reverser serviceable after maintenance (Ref. TASK 78-30-00-081-041)
Subtask 72-42-00-410-058
C. Close Access
(1) Close the fan cowl doors: (Ref. TASK 71-13-00-410-040)
FOR 1000EM1
437AL, 438AR
FOR 1000EM2
447AL, 448AR
(2) Remove the warning notice(s).
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TASK 72-42-00-290-006
Borescope Inspection of the Outer Side of the Combustion Chamber Outer Liners
1. Reason for the Job
__________________
To confirm the extent of the outer liner axial cracks, as necessary.
2. Job Set-up Information
______________________
A. Fixtures, Tools, Test and Support Equipment
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REFERENCE QTY DESIGNATION
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No specific warning notice
No specific access platform 1 m (3 ft. 3 in.)
856A1321 1 FIBERSCOPE SET
856A1322 1 BORESCOPE - LIGHT SOURCE SET
856A1323 1 MONITOR, RESOLUTION BORESCOPE
B. Referenced Information
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REFERENCE DESIGNATION
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71-13-00-010-040 Opening of the Fan Cowl Doors
71-13-00-410-040 Closing of the Fan Cowl Doors
R 72-00-00-200-025 Over-Serviceable-Limit Extensions 73-11-40-000-002 Removal of the Fuel Nozzle 73-11-40-400-002 Installation of the Fuel Nozzle 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 78-36-00-410-040 Closing of the Thrust Reverser Doors NTM 720000 72-42-00-991-304 Fig. 606
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3. Job Set-up
__________
Subtask 72-42-00-941-057
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 72-42-00-010-072
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