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 B. Vanes The IGV and the stages 1 through 3 vanes are variable ; the stages 4 and 5 vanes are fixed. All vanes are made of steel. The fixed vanes, in stages 4 and 5, are fabricated into segments consisting of several vanes each. All stages of vanes have honeycomb shrouds on their inner diameter. The shrouds together with the rotor seal teeth, form interstage seals to prevent flowpath recirculation.
 C. Variable Vane Actuation Actuation of the variable vanes is accomplished with hydraulically actuated bellcrank assemblies mounted on the front compressor stator at the 2 and 8 o'clock positions. Fixed linkages connect the bellcranks to actuation rings. Lever arms attached to the variable vanes connect to the actuation rings. Fuel from the hydromechanical unit (HMU) operates the hydraulic actuators.
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 Compressor Front Stator Assembly
 Figure 001

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 HP Compressor Stator Section
 Figure 002

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 HPC FRONT STATOR ASSEMBLY - INSPECTION/CHECK

____________________________________________
 TASK 72-32-00-210-002
 Inspection/Check of the HPC Front Stator Assembly
 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.)

 B. Referenced Information
 -------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
71-00-00-000-042 Removal of the Power Plant 71-13-00-010-040 Opening of the Fan Cowl Doors 71-13-00-410-040 Closing of the Fan Cowl Doors 72-00-00-200-009 Off-Schedule Vane Replacement 72-00-00-200-025 Over-Serviceable-Limit Extensions 72-32-00-000-004 Removal of the Actuation Ring Connecting Links 72-32-00-400-004 Installation of the Actuation Ring Connecting Links 75-32-10-000-002 Removal of the Variable Stator Vane (VSV) Actuators 75-32-10-400-002 Installation of the Variable Stator Vane (VSV)
 Actuators
 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
 72-32-00-991-300 Fig. 601

R 72-32-00-991-304 Fig. 602
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 3. Job Set-up
__________
 Subtask 72-32-00-941-053
 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 72-32-00-010-058
 B. Get access
 (1) Open the fan cowl doors: (Ref. TASK 71-13-00-010-040)
 FOR 1000EM1
 437AL, 438AR
 FOR 1000EM2
 447AL, 448AR.

 (2) Put the access platform in position.

 Subtask 72-32-00-040-055
 C. Make the thrust reverser unserviceable (Ref. TASK 78-30-00-481-041).
 Subtask 72-32-00-010-059
 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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 4. Procedure
_________
 (Ref. Fig. 601/TASK 72-32-00-991-300, 602/TASK 72-32-00-991-304)
　
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