W DOC AIRBUS | AMM A320F

Reactivation of the Thrust Reverser System after Flight [CFML]

TASK 78-30-00-440-808-A
Reactivation of the Thrust Reverser System after Flight

WARNING: BE CAREFUL WHEN YOU USE CONSUMABLE MATERIALS. OBEY THE MATERIAL MANUFACTURER'S INSTRUCTIONS AND YOUR LOCAL REGULATIONS.
WARNING: BE CAREFUL WHEN YOU DO WORK ON THE ENGINE PARTS AFTER THE ENGINE SHUTDOWN. USE APPLICABLE THERMAL GLOVES. THE ENGINE PARTS CAN STAY HOT FOR ONE HOUR AFTER SHUTDOWN AND CAN BURN YOU.
ZONE: 400
1. Reason for the Job
MMEL 78-30-01A
THRUST REVERSER
MMEL 78-30-01B
THRUST REVERSER
2. Job Set-up Information
 A. Fixtures, Tools, Test and Support Equipment
REFERENCE
QTY
DESIGNATION
No specific
1
ACCESS PLATFORM 2M (6 FT) - ADJUSTABLE
No specific
AR
WARNING NOTICE(S)
No specific
Torque wrench: range to between 0.374 and 0.306 m.daN (33.10 and 27.08 lbf.in ) T
 B. Consumable Materials
REFERENCE
DESIGNATION
(Material No.CPNCL00338)
MASTINOX D40
 C. Work Zones and Access Panels
ZONE/ACCESS
ZONE DESCRIPTION
400
POWER PLANT, NACELLES AND PYLONS
FOR [4020KM1] (POWER PLANT-DEMOUNTABLE, ENGINE 1)
437AL, 438AR
FOR [4020KM2] (POWER PLANT-DEMOUNTABLE, ENGINE 2)
447AL, 448AR
 D. Referenced Information
REFERENCE
DESIGNATION
TASK 71-13-00-010-803-A
Opening of the Fan Cowl Doors
TASK 71-13-00-410-803-A
Closing of the Fan Cowl Doors
TASK 73-29-00-740-804-A
Thrust Reverser Cycling Test (Menu Mode)
F Mechanical Pin on the Lower Beam
F Mechanical Pin from Storage Bracket
F Hydraulic Activation of the Isolation Control Unit (ICU)
3. Job Set-up
Subtask 78-30-00-941-090-A
A. Safety Precautions
   (1) On the center pedestal, on ENG panel 115VU:
     (a) Make sure that the ENG/MODE selector switch is in the NORM position.
     (b) Make sure that the ENG/MASTER 1(2) control switch was in the OFF position not less than five minutes before you do this procedure.
     (c) Put WARNING NOTICE(S) in position to tell persons not to operate:
  • The ENG/MODE selector switch
  • The ENG/MASTER 1(2) control switch.
   (2) On the ENG section of maintenance panel 50VU:
     (a) Make sure that the ON legend of the FADEC GND PWR/1(2) pushbutton switch is off.
     (b) Put a WARNING NOTICE(S) in position to tell persons not to energize FADEC 1(2).
Subtask 78-30-00-010-096-A
B. Get Access
   (1) Open the fan cowl doors (Ref. AMM TASK 71-13-00-010-803):
     (a) FOR [4020KM1] (POWER PLANT-DEMOUNTABLE, ENGINE 1)
437AL 438AR
     (b) FOR [4020KM2] (POWER PLANT-DEMOUNTABLE, ENGINE 2)
447AL 448AR
   (2) Put an ACCESS PLATFORM 2M (6 FT) - ADJUSTABLE in position under the left fan cowl door.
4. Procedure
Subtask 78-30-00-440-071-A
A. Activation of the Thrust Reverser
   (1) Mechanical activation:
     (a) Removal of the inhibition secure pin (1):
F Mechanical Pin on the Lower Beam
       1 Remove the screw (2) and the inhibition cover (3).
       2 Remove the inhibition secure pin (1) from the hole on the lower beam (4).
       3 Put the inhibition cover (3) back in position.
       4 Apply MASTINOX D40 (Material No.CPNCL00338) on the thread of the screw (2).
       5 Install the screw (2).
       6 TORQUE the screw (2) to between 0.374 and 0.306 m.daN (33.10 and 27.08 lbf.in ) T.
     (b) Installation of the inhibition secure pin (1) on the storage bracket:
F Mechanical Pin from Storage Bracket
       1 Remove the screw (2) and the cover (3).
       2 Install the inhibition secure pin (1) on the storage bracket.
       3 Put the cover (3) back in position.
       4 Install the screw (2).
       5 TORQUE the screw (2) to between 0.374 and 0.306 m.daN (33.10 and 27.08 lbf.in ) T.
   (2) Hydraulic activation:
F Hydraulic Activation of the Isolation Control Unit (ICU)
     (a) Remove the tethered pin (3) from the forward hole (6) of inhibition lever (1).
     (b) Move the inhibit lever (1) to the activate position (away from the inhibit plunger (4)).
     (c) Check that "ICU ACTIVE" is now visible.
     (d) Install the tethered pin (3) through the aft hole (5) of the ICU (2) and the inhibit lever (1).
5. Close-up
Subtask 78-30-00-410-079-A
A. Close Access
   (1) Make sure that the work area is clean and clear of tools and other items.
   (2) Close the fan cowl doors (Ref. AMM TASK 71-13-00-410-803):
     (a) FOR [4020KM1] (POWER PLANT-DEMOUNTABLE, ENGINE 1)
437AL 438AR
     (b) FOR [4020KM2] (POWER PLANT-DEMOUNTABLE, ENGINE 2)
447AL 448AR
   (3) Remove the access platform(s).
   (4) Remove the WARNING NOTICE(S).
Subtask 78-30-00-740-050-A
B. Test
   (1) Do the Thrust Reverser Cycling Test (Menu Mode) (Ref. AMM TASK 73-29-00-740-804).
[Rev.10 from 2021] 2026.04.01 03:34:45 UTC
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