W DOC AIRBUS | AMM A320F

Installation of the Thrust Reverser Cowl Opening System [CFML]

TASK 78-36-51-400-802-A
Installation of the Thrust Reverser Cowl Opening System

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.
WARNING: BE CAREFUL WHEN YOU USE CONSUMABLE MATERIALS. OBEY THE MATERIAL MANUFACTURER'S INSTRUCTIONS AND YOUR LOCAL REGULATIONS.
ZONE: 400
1. Reason for the Job
Self explanatory
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
1
HOIST 1000 KG (2200 LB)
No specific
1
SHACKLE WORK LOAD LIMIT 1000 KG (2204LB)
No specific
1
SLING 1000 KG (2205 LBS)/2.5 M (8.25 FT) LONG
No specific
AR
WARNING NOTICE(S)
No specific
Torque wrench: range to between 0.39 and 0.29 m.daN (34.51 and 25.66 lbf.in ) T
No specific
Torque wrench: range to between 3 and 2 m.daN (22.12 and 14.75 lbf.ft ) T
No specific
Torque wrench: range to between 6.2 and 5.0 m.daN (45.72 and 36.87 lbf.ft ) T
No specific
Torque wrench: range to between 6.82 and 5.58 m.daN (50.29 and 41.15 lbf.ft ) T
 B. Consumable Materials
REFERENCE
DESIGNATION
(Material No.CPNCL00667)
LUBRICATING COMPOUND (LIQUI-MOLY GRADE NV)
(Material No.CPNCL00700)
ELECTRICAL BONDING COATING (BLUE COLOR)
(Material No.CPNCL02069)
LINT-FREE COTTON CLOTH
(Material No.CPNCL02662)
ISOPROPYL ALCOHOL
 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. Expendable Parts
FIG.ITEM
DESIGNATION
IPC-CSN
21
PIN
AIPC 78-36-80-04-210
 E. 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 78-30-00-040-807-A
Deactivation of the Thrust Reverser System for Nacelle Maintenance (ICU)
TASK 78-30-00-440-807-A
Reactivation of the Thrust Reverser System after Nacelle Maintenance (ICU)
TASK 78-36-00-010-806-A
Opening of the Thrust Reverser Cowl Doors
TASK 78-36-00-410-806-A
Closing of the Thrust Reverser Cowl Doors
F Thrust Reverser Cowl Opening Actuator (PRE SB BD70CR78-010 and/or PRE SB BD70CR78-009)
F Thrust Reverser Cowl Opening Actuator (POST SB BD70CR78-010 and/or POST SB BD70CR78-009)
3. Job Set-up
Subtask 78-36-51-941-058-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) Make sure that the WARNING NOTICE(S) are in position to tell persons not to operate:
  • The ENG/MODE selector switch, and
  • 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) Make sure that the WARNING NOTICE(S) is in position to tell persons not to energize FADEC 1(2).
Subtask 78-36-51-010-064-A
B. Get Access
   (1) Make sure that the fan cowl doors are open (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) Make sure that the ACCESS PLATFORM 2M (6 FT) - ADJUSTABLE is in position.
Subtask 78-36-51-040-059-A
C. Deactivation of the Thrust Reverser System for Nacelle Maintenance
WARNING: YOU MUST DEACTIVATE THE THRUST REVERSER BEFORE YOU DO WORK ON OR AROUND IT. IF YOU DO NOT, THE THRUST REVERSER CAN OPERATE ACCIDENTALLY AND CAUSE AN INJURY AND/OR DAMAGE.
   (1) Make sure that you did the deactivation of the thrust reverser system for nacelle maintenance (Ref. AMM TASK 78-30-00-040-807).
Subtask 78-36-51-010-068-A
D. Get Access

PRE SB BD70CR78-009

   (1) Make sure that the thrust reverser latches are opened (Ref. AMM TASK 78-36-00-010-806).

END OF PRE SB BD70CR78-009

Subtask 78-36-51-010-069-A
E. Get Access
NOTE: For left thrust reverser POST SB BD70CR78-009 and for right thrust reverser, do not use SLING 1000 KG (2205 LBS)/2.5 M (8.25 FT) LONG, SHACKLE WORK LOAD LIMIT 1000 KG (2204LB) and the HOIST 1000 KG (2200 LB).

PRE SB BD70CR78-009

CAUTION: DO NOT OPEN THE HALF THRUST REVERSER MORE THAN 10 DEGREES. IF YOU DO, THERE IS A RISK OF CLASH WITH THE PYLON.
   (1) Opening of the left thrust reverser cowl at about ten degrees open position:
WARNING: MAKE SURE THAT:
  • THE THREADED LENGTH OF THE SHACKLE IS BETWEEN 19.05 MM (0.750 INCH) AND 24.10 MM (0.949 INCH)
  • THE MAXIMUM EXTERNAL DIAMETER OF THE SHACKLE IS 30.50 MM (1.201 INCH).
IF YOU DO NOT OBEY THIS INSTRUCTION, FAILURE OF THE SHACKLE CAN OCCUR. THIS CAN CAUSE INJURY TO PERSONS AND/OR DAMAGE TO THE EQUIPMENT.
CAUTION: MAKE SURE THAT YOU DO NOT CAUSE DAMAGE TO THE EXTERNAL SIDE OF THE THRUST REVERSER WITH THE SLING.
     (a)
F Thrust Reverser Cowl Opening Actuator (PRE SB BD70CR78-010 and/or PRE SB BD70CR78-009)
       1 Remove the filler plugs from the forward hoisting points (27) at 6 o'clock area.
       2 Make sure that the hoisting points insert is clean and in good condition.
       3 Apply CPNCL00667LUBRICATING COMPOUND (LIQUI-MOLY GRADE NV) on the threads of the SHACKLE WORK LOAD LIMIT 1000 KG (2204LB).
       4 Install the SHACKLE WORK LOAD LIMIT 1000 KG (2204LB) into the hoisting points (27).
       5 TORQUE the SHACKLE WORK LOAD LIMIT 1000 KG (2204LB) to between 3 and 2 m.daN (22.12 and 14.75 lbf.ft ) T.
       6 Attach the SLING 1000 KG (2205 LBS)/2.5 M (8.25 FT) LONG to the SHACKLE WORK LOAD LIMIT 1000 KG (2204LB) and to the HOIST 1000 KG (2200 LB).
       7 Lift the HOIST 1000 KG (2200 LB) until the SLING 1000 KG (2205 LBS)/2.5 M (8.25 FT) LONG holds the weight of the cowl.
NOTE: The SLING 1000 KG (2205 LBS)/2.5 M (8.25 FT) LONG attached to the SHACKLE WORK LOAD LIMIT 1000 KG (2204LB) must be in a vertical plane.
       8 Open the thrust reverser cowl at about ten degrees open position.

END OF PRE SB BD70CR78-009

4. Procedure
Subtask 78-36-51-420-054-A
A. Installation of the Thrust Reverser Cowl Opening System
NOTE: This procedure is given for the left thrust reverser cowl opening system. It is also applicable to the right thrust reverser cowl opening system.

PRE SB BD70CR78-009
PRE SB BD70CR78-010

   (1) Clean the screws (2), (4) and (8), bolt (12), washer (11), nut (10), the bushing (13) and the contact surfaces with a LINT-FREE COTTON CLOTH (Material No.CPNCL02069) made moist with ISOPROPYL ALCOHOL (Material No.CPNCL02662) .
   (2) Make sure that the finish on the threads of the screws (2), (4) and (8), bolt (12) and the contact surfaces of the washer (11) and nut (10) are not damaged.
   (3) Put the actuator (1) in position.

END OF PRE SB BD70CR78-009
END OF PRE SB BD70CR78-010

POST SB BD70CR78-009
POST SB BD70CR78-010

   (4) Clean the screws (15) and (20), bolt (26), washer (23), nuts (22) and (24), bushings (25) and (18) and the contact surfaces with a LINT-FREE COTTON CLOTH (Material No.CPNCL02069) made moist with ISOPROPYL ALCOHOL (Material No.CPNCL02662) .
   (5) Make sure that the finish on the threads of the screws (15) and (20), bolt (26) and the contact surfaces of the washer (23) and nuts (22) and (24) are not damaged.
   (6) Put the actuator (1) in position.

END OF POST SB BD70CR78-009
END OF POST SB BD70CR78-010

PRE SB BD70CR78-009

   (7) Connection of the actuator (1) to the thrust reverser bracket (7):
     (a) Put the actuator (1) in position on the thrust reverser bracket (7).
     (b) Install the pin (6).
     (c) Install the bushing (5).
     (d) Install the screw (4).
     (e) TORQUE the screw (4) to between 0.39 and 0.29 m.daN (34.51 and 25.66 lbf.in ) T.
     (f) Install the anti-rotation device (3).
     (g) Install the screw (2).
     (h) TORQUE the screw (2) to between 0.39 and 0.29 m.daN (34.51 and 25.66 lbf.in ) T.

END OF PRE SB BD70CR78-009

POST SB BD70CR78-009

   (8) Connection of the actuator (1) to the thrust reverser bracket (7):
     (a) Put the actuator (1) in position on the thrust reverser bracket (7).
     (b) Install the bushing (18).
     (c) Install the pin (17) to attach the actuator (1) to the bracket (7).
     (d) Install the anti-rotation device (16).
     (e) Install the screw (15) to attach the anti-rotation device (16) to the bracket (7).
     (f) TORQUE the screw (15) to between 0.39 and 0.29 m.daN (34.51 and 25.66 lbf.in ) T.

END OF POST SB BD70CR78-009

PRE SB BD70CR78-010

   (9) Connection of the actuator (1) to the engine bracket (14):
     (a) If removed, install the bushing (13) on the engine bracket (14).
     (b) Put the actuator (1) in position on the engine bracket (14).
     (c) Install the bolt (12).
     (d) Install the washer (11) and the nut (10).
     (e) TORQUE the nut (10) to between 6.2 and 5.0 m.daN (45.72 and 36.87 lbf.ft ) T.
     (f) Put the bonding strap (9) on the engine bracket (14).
     (g) Install the screw (8).
     (h) TORQUE the screw (8) to between 0.39 and 0.29 m.daN (34.51 and 25.66 lbf.in ) T.
     (i) Apply CPNCL00700ELECTRICAL BONDING COATING (BLUE COLOR) on the head of the screw (8) that attach the bonding strap (9).

END OF PRE SB BD70CR78-010

POST SB BD70CR78-010
   (10) Connection of the actuator (1) to the engine bracket (14):
     (a) Put the actuator (1) in position on the engine bracket (14).
     (b) Install the bushing (25).
     (c) Install the bolt (26) to attach the actuator (1) to the engine bracket (14).
     (d) Install the washer (23).
     (e) Install the nut (22).
     (f) TORQUE the nut (22) to between 6.82 and 5.58 m.daN (50.29 and 41.15 lbf.ft ) T.
WARNING: USE PROTECTIVE GOGGLES WHEN YOU REMOVE OR INSTALL A COTTER PIN. EACH TIME YOU REMOVE A COTTER PIN DURING THE TASK, DISCARD IT IMMEDIATELY. A LOOSE COTTER PIN CAN CUT YOU OR MAKE YOU BLIND.
     (g) Install a new AIPC 78-36-80-04-210 PIN (21).
     (h) Put the bonding strap (19) on the engine bracket (14).
     (i) Install the bolt (20) to attach the bonding strap (19) on the engine bracket (14).
     (j) Install the nut (24).
     (k) TORQUE the nut (24) to between 0.39 and 0.29 m.daN (34.51 and 25.66 lbf.in ) T.
     (l) Apply CPNCL00700ELECTRICAL BONDING COATING (BLUE COLOR) on the head of the bolt (20) and the nut (24) that attach the bonding strap (19).

END OF POST SB BD70CR78-010

5. Close-up
Subtask 78-36-51-410-063-A
A. Close Access

PRE SB BD70CR78-009

   (1)
F Thrust Reverser Cowl Opening Actuator (PRE SB BD70CR78-010 and/or PRE SB BD70CR78-009)
     (a) Close the thrust reverser with the HOIST 1000 KG (2200 LB) until the SLING 1000 KG (2205 LBS)/2.5 M (8.25 FT) LONG does not hold the weight of the cowl.
     (b) Remove the SLING 1000 KG (2205 LBS)/2.5 M (8.25 FT) LONG from the SHACKLE WORK LOAD LIMIT 1000 KG (2204LB) and the HOIST 1000 KG (2200 LB).
     (c) Remove the SHACKLE WORK LOAD LIMIT 1000 KG (2204LB).
     (d) Install the filler plugs from the forward hoisting points (27) at 6 o'clock area.
     (e) Close the thrust reverser latches (Ref. AMM TASK 78-36-00-410-806).

END OF PRE SB BD70CR78-009

Subtask 78-36-51-440-058-A
B. Do the reactivation of the thrust reverser system after nacelle maintenance (Ref. AMM TASK 78-30-00-440-807).
Subtask 78-36-51-410-068-A
C. 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).
[Rev.10 from 2021] 2026.04.01 03:37:14 UTC
"Aviabrain" 2025