FORWARD FAIRING - DEACTIVATION/REACTIVATION
___________________________________________ TASK 54-52-00-040-001 Deactivation of the Pressure Relief Doors
 1. Reason for the Job
__________________
 Refer to the CDL TASK: 54-3
 Pylon - Pressure Relief Doors
 NOTE : Remove the right pressure-relief door if the left pressure-relief
____ door is missing and remove the left pressure-relief door if the right pressure-relief is missing.
 2. Job Set-up Information
______________________
 A. Fixtures, Tools, Test and Support Equipment
 -------------------------------------------------------------------------------REFERENCE QTY DESIGNATION -------------------------------------------------------------------------------
No specific warning notice
 No specific access platform 1.50 m (4 ft. 11 in.)

 B. Referenced Information
 -------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
78-30-00-481-041  Make the Thrust Reverser Unserviceable for Maintenance 54-52-00-991-003 Fig. 401
 3. Job Set-up
__________ Subtask 54-52-00-941-053
 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 54-52-00-040-052
 B. Aircraft Maintenance Configuration
 (1) Make the thrust reverser unserviceable (Ref. TASK 78-30-00-481-041). Subtask 54-52-00-010-051
 C. Get Access
 (1)
 Put an access platform in position:

 (a)
 At zone 410 for the left pylon.

 (b)
 At zone 420 for the right pylon.

 (2)
 Remove these access doors :

 (a)
 For the left pylon: 413DL, 413CL, 414CR.

 (b)
 For the right pylon: 423DL, 423CL, 424CR.

 4. Procedure
_________ Subtask 54-52-00-040-053
 A. Deactivation of the Pressure Relief Door
 (Ref. Fig. 401/TASK 54-52-00-991-003)

 NOTE : Each pressure-relief door deactivation is symmetrical.
____
 (1)
 Open the pressure relief door (1) or (2).

 (2)
 Remove the spring (11).

 (3)
 Remove the cotter pins (9) and discard them.

 (4)
 Remove the washers (6), the pin (10) and the shims (7) and (8).

 (5)
 Remove the nut (5), the bolt (12) and the washer (13).

 (6)
 Remove the shims (14), (15), (3) and (4).

 (7)
 Remove the nut (21), the bolt (17) and the washers (16) and (18).

 (8)
 Remove the shims (19) and (20).

 (9)
 Remove the pressure relief door (1) or (2).

 Pressure Relief Doors
 Figure 401/TASK 54-52-00-991-003
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 TASK 54-52-00-440-001

 Reactivation of the Pressure Relief Doors
 1. Reason for the Job
__________________
 Refer to the CDL TASK: 54-3
 Pylon - Pressure Relief Doors
 2. Job Set-up Information
______________________
 A. Fixtures, Tools, Test and Support Equipment
 -------------------------------------------------------------------------------REFERENCE QTY DESIGNATION -------------------------------------------------------------------------------
No specific  warning notice(s)
 B. Expendable Parts
 -------------------------------------------------------------------------------FIG.ITEM |DESIGNATION |IPC-CSN -------------------------------------------------------------------------------
cotter pins  54-52-11 02A-060
 C. Referenced Information
 -------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
78-30-00-081-041  Make the Thrust Reverser Serviceable after Maintenance 78-30-00-481-041 Make the Thrust Reverser Unserviceable for Maintenance 54-52-00-991-003 Fig. 401
　
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