E 56-5B E E E R TASK 72-54-00-290-007- 01

R Inspection of the Stage 2-4 Nozzle Segments
R 1. Reason for the Job
__________________
R This Task is only available for CFM56-5BX /P engines.
R 2. Job Set-up Information
______________________
R A. Fixtures, Tools, Test and Support Equipment

R -------------------------------------------------------------------------------R REFERENCE QTY DESIGNATION
R -------------------------------------------------------------------------------
R No specific warning notice
R No specific Torque Wrench : range 36.00 to 220.00 lbf.in
R (0.40 to 2.60 m.daN)
R 856A1320 1 BORESCOPE KIT
R 856A1322 1 BORESCOPE - LIGHT SOURCE SET

R B. Consumable Materials

R -------------------------------------------------------------------------------R REFERENCE DESIGNATION
R -------------------------------------------------------------------------------
R Material No. CP2101 USA MIL-T-5544
R graphite grease (Ref. 70-30-00)
R Material No. CP8001 *
R lockwire 0.032 in. (0.8 mm) dia. (Ref. 70-30-00)
R Material No. CP8002 *
R lockwire 0.032 in. (0.8 mm) dia. (Ref. 70-30-00)

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R  C. Referenced Information 
R  -------------------------------------------------------------------------------
R  REFERENCE  DESIGNATION 
R  -------------------------------------------------------------------------------

R  71-13-00-010-040  Opening of the Fan Cowl Doors 
R  71-13-00-410-040  Closing of the Fan Cowl Doors 
R  72-00-00-200-025  Over-Serviceable-Limit Extensions 
R  78-30-00-081-041  Make the Thrust Reverser Serviceable after 
R  Maintenance 
R  78-30-00-481-041  Make the Thrust Reverser Unserviceable for 
R  Maintenance 
R  78-36-00-010-040  Opening of the Thrust Reverser Doors 
R  78-36-00-410-040  Closing of the Thrust Reverser Doors 
R  72-54-00-991-300  Fig. 601 
R  72-54-00-991-301  Fig. 602 
R  72-54-00-991-302  Fig. 603 
R  3. Job Set-up__________ 
R  Subtask 72-54-00-941-067 
R  A. Safety Precautions 

R  (1) On the center pedestal, on the ENG panel 115VU: 
R  (a) Put a warning notice to tell persons not to start the engine. 
R  (2) Make sure that the engine 1(2) shutdown occurred not less than 5 
R  minutes before you do this procedure. 
R  (3) On the overhead maintenance panel 50VU: 
R  (a) Make sure that the ON legend of the ENG/FADEC GND PWR/1(2) 
R  pushbutton switch is off. 
R  (b) Put a warning notice to tell persons not to energize the FADEC 
R  1(2).

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R Subtask 72-54-00-010-093

R  B. Get Access
R (1) Open the fan cowl doors (Ref. TASK 71-13-00-010-040): R FOR 1000EM1 R 437AL, 438AR R FOR 1000EM2 R 447AL, 448AR
R Subtask 72-54-00-040-066
R  C. Make the thrust reverser unserviceable (Ref. TASK 78-30-00-481-041).
R Subtask 72-54-00-010-094
R D. Open the thrust reverser doors (Ref. TASK 78-36-00-010-040): R FOR 1000EM1 R 451AL, 452AR R FOR 1000EM2 R 461AL, 462AR
R 4. Procedure
_________
R  (Ref. Fig. 601/TASK 72-54-00-991-300, 602/TASK 72-54-00-991-301, 603/TASK 72-54-00-991-302)
R Subtask 72-54-00-010-095
R  A. Remove Borescope Plugs
R (1) Let the temperature of the parts decrease to ambient temperature. R R PRE SB CFMI 72-0376 R
R (2) Cut and remove the lockwires and remove the LPT borescope plugs S18, R S19, S20.
R  NOTE : The borescope plugs S18, S19, S20 are located approximately at
____ R 5:00 o'clock (ALF) on the LPT case, and from front to rear, R relate to the 2nd, 3rd and 4th stages of the LPT respectively.
R END OF PRE SB CFMI 72-0376 R R POST SB CFMI 72-0376 R
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 E 56-5B E E E R (3) Remove the self locking borescope cap assemblies S18, S19, S20.

R NOTE : The borescope cap assemblies S18, S19, S20 are located
　
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