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(4) Slide edges of No limit if not deeper Replace pair of blades
platform. than 0.013 in. (0.33 (Ref. TASK 72-21-00-300-mm). 028).
V. Shingled midspan Not serviceable. See limit extensions
shrouds. (Ref. TASK 72-00-00-200-025).
W. Fan blade(s) tip Not serviceable. Release the blade(s) with seizure in fan hand force to move the case abradable seized blade(s) tip shroud. forward and
circumferentially. Then, do an inspection of the blade(s) and abradable shroud for serviceability. Make sure that there is free N1 rotation.
5. Close-up
________
Subtask 72-21-00-942-075
A. Put the aircraft back to its initial configuration.
(1) Make sure that the work area is clean and clear of tool(s) and other items.
(2) Remove the warning notice(s).
(3) Remove the access platform(s).
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TASK 72-21-00-210-007
Inspection/Check of the Stage 1 Booster Vane, Fan Disk and Fan Blades Spacers.
1. Reason for the Job
__________________
Self Explanatory
2. Job Set-up Information
______________________
A. Fixtures, Tools, Test and Support Equipment
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No specific warning notice
B. Referenced Information
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72-00-00-200-025 Over-Serviceable-Limit Extensions 72-21-00-000-007 Removal of the Fan Rotor Blades 72-21-00-000-008 Removal of the Stage 1 Booster Vane Assembly 72-21-00-400-007 Installation of the Fan Rotor Blades 72-21-00-400-008 Installation of the Stage 1 Booster Vane Assembly 72-21-00-991-317 Fig. 608 72-21-00-991-318 Fig. 609 72-21-00-991-319 Fig. 610
3. Job Set-up
__________ Subtask 72-21-00-941-081
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.
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(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 72-21-00-020-073
B. Remove the fan blades (Ref. TASK 72-21-00-000-007).
4. Procedure
_________
(Ref. Fig. 608/TASK 72-21-00-991-317, 609/TASK 72-21-00-991-318, 610/TASK 72-21-00-991-319)
Subtask 72-21-00-210-057
A. Do this visual inspection:
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1. Stage 1 booster vanes for: (Ref. Fig. 610/TASK 72-21-00-991-319)
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