(4) Inspect the position of the fuel nozzle tip to the bore of the primary swirler for the conditions as follows:
(a) the tip of the fuel nozzle must be within the bore of the primary swirler.
(b) if the fuel nozzle is out of position with the dome, refer to paragraph B.(10).
(5) Do the fuel nozzle tip inspection for the fuel nozzle that is counterclockwise from the igniter.
(6) Turn the borescope until you can see the second deflector and the second sleeve that is clockwise from the igniter.
(7) Inspect the gap between the deflector and the spectacle plate on the inner liner side. The nominal dimension of the gap is 0.08 in. (2.03 mm). Inspect for the following:
(a) the gap must be 0.3 in. (7.6 mm) max at the edge of the deflector
(b) if the gap is over the max, refer to pargraph B.(10).
(8) Do the deflector gap inspection for the second deflector
counterclockwise from the igniter.
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Combustion Chamber Inspection
Figure 607/TASK 72-42-00-991-307
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Combustion Chamber Inspection
Figure 608/TASK 72-42-00-991-308
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(9) Do the inspection B.(1) thru B.(8) to the right side igniter and the borescope ports.
(10) If any of the results of the inspections are out of limits, remove the fuel nozzle adjacent to the area. Insert the borescope and rotate to view the affected fuel nozzle and primary swirler.
(11) Inspect the position of the fuel nozzle tip to the bore of the primary swirler. If the fuel nozzle is out of position with the primary swirler, remove the engine. There are no allowable service extensions that apply.
(12) Do a one time borescope inspection between 200-400 hours after the birdstrike occurred (Ref. TASK 72-51-00-290-004) for NON/P hardware and (Ref. TASK 72-51-00-290-004) for /P hardware , but only look for leading edge missing material/burn through.
(a) If no leading edge distress is seen, go back to the usual borescope inspection interval.
(b) If missing material/burn through is seen on the HPT nozzle leading edge wall, contact CFMI.
(13) When the inspection is complete, turn off the light source and remove the borescope.
Subtask 72-42-00-410-060
C. Install parts removed for borescope inspection.
R (1) Apply a small amount of graphite grease (Material No. CP2101) or R Never Seez-Pure Nickel, Special (Material No. CP2619) to the R borescope plug threads and pressure faces.
R (2) Install the borescope plugs.
R CAUTION : BE SURE TO INSTALL THE CORRECT BORESCOPE PLUGS. THE
_______ R COMBUSTOR BORESCOPE PLUGS DO NOT HAVE A STEM FEATURE. R INADVERTENT INSTALLATION OF BORESCOPE PLUGS WITH STEMS FROM R OTHER LOCATIONS WILL RESULT IN THE STEM FEATURE BEING R BURNED AWAY BY COMBUSTION GASES.
R
R (a) Install the borescope plugs and TORQUE to between 57 and 63 R lbf.in (0.64 and 0.71 m.daN).
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(3) Safety the plug with lockwire 0.8 mm dia. (Material No. CP8001).
(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) Install the spark igniters (Ref. TASK 74-21-30-400-002).
Subtask 72-42-00-790-052
D. 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 72-42-00-410-061
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 72-42-00-440-054
B. Make the thrust reverser serviceable. (Ref. TASK 78-30-00-081-041)
Subtask 72-42-00-410-062
C. Close Access
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