DOC AIRBUS | AMM A320FClosing of the Thrust Reverser Doors - Sling Method [PW11]
TASK 78-36-00-410-807-A
Closing of the Thrust Reverser Doors - Sling Method
Self explanatory
2. Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment
B. Work Zones and Access Panels
C. Referenced Information
3. Job Set-up
Subtask 78-36-00-941-070-A ** ON A/C NOT FOR ALL
(a) If you used the 636-3000-10GSE TR HOLD OPEN STRUT TO PYLON or the 636GSE3009-901 TR HOLD OPEN STRUT as an alternative to the hold open rod, do not do steps 4.A.(2) thru 4.A.(3).
(b) Remove the 636-3000-10GSE TR HOLD OPEN STRUT TO PYLON or the 636GSE3009-901 TR HOLD OPEN STRUT.
(c) Refer to the instructions of the manufacturer.
(3) Fully retract the hold open rod (15).
(a) Make sure that you see the red band on the slide.
(5) Removal of the 636-3000-7GSE THRUST REVERSER HANDLING SLING.
(b) Attach the top end of the hold open rod (15) to the hold-open rod bolt (14).
(c) For configuration 1 ( 636-3000-7GSE THRUST REVERSER HANDLING SLING Rev. A), disconnect the 636-3000-7GSE THRUST REVERSER HANDLING SLING as follows:
1 Disconnect the -701 strap assembly from the -101-2 hand chain hoist. Refer to the work instructions of the manufacturer of the sling.
2 Remove the -101-2 hand chain hoist from the CRANE 500 KG (1100 LB) or equivalent.
3 Disconnect the -601-1 round tube from the forward latch-beam bracket and the aft latch-beam bracket on the left thrust-reverser door (8). Remove the -601-1 round tube, the -601-2 round tube, the two -604 stop assemblies and the -701 strap assembly. Refer to the work instructions of the manufacturer of the sling.
4 Disconnect the -901 shield mat from the left thrust-reverser door (8). Refer to the work instructions of the manufacturer of the sling.
5 Remove the forward latch-beam bracket and the aft latch-beam bracket from the bottom of the left thrust-reverser door (8). Refer to the work instructions of the manufacturer of the sling.
(d) For configuration 2 ( 636-3000-7GSE THRUST REVERSER HANDLING SLING Rev. B and after), disconnect the 636-3000-7GSE THRUST REVERSER HANDLING SLING as follows:
1 Disconnect the -1001 strap assembly from the -101-2 hand chain hoist. Refer to the work instructions of the manufacturer of the sling.
2 Remove the -101-2 hand chain hoist from the CRANE 500 KG (1100 LB) or equivalent.
3 Disconnect the -1001 strap assembly from the hoist shackles on the -1002 forward latch-beam bracket and the -1003 aft latch-beam bracket. Refer to the work of the manufacturer of the sling.
4 Disconnect the -901 shield mat from the left thrust-reverser door (8). Refer to the work instructions of the manufacturer of the sling.
5 Remove the -1002 forward latch beam-bracket and the -1003 aft latch-beam bracket from the bottom of the left thrust-reverser door (8). Refer to the work instructions of the manufacturer of the sling.
Subtask 78-36-00-410-097-A ** ON A/C NOT FOR ALL
Subtask 78-36-00-440-071-A ** ON A/C NOT FOR ALL
[Rev.10 from 2021]
2026.04.01 03:33:58 UTC
Closing of the Thrust Reverser Doors - Sling Method
WARNING:
WEAR APPLICABLE PERSONAL PROTECTIVE EQUIPMENT (PPE) WHEN YOU DO THIS TASK. BEFORE YOU USE PPE, READ, UNDERSTAND AND OBEY ALL INSTRUCTIONS FOR ITS USE. THESE INSTRUCTIONS INCLUDE INSTRUCTIONS FROM THE MANUFACTURER, YOUR EMPLOYER AND GOVERNMENT REGULATIONS. YOU CAN GET INJURED IF YOU DO NOT USE PPE. GET INSTRUCTIONS FROM YOUR EMPLOYER ON WHICH PPE IS NECESSARY.
WARNING:
BE CAREFUL WHEN YOU DO WORK ON THE ENGINE AFTER SHUTDOWN. THE ENGINE CAN STAY HOT FOR A LONG TIME. IF YOU DO NOT OBEY THIS INSTRUCTION, INJURY CAN OCCUR.
WARNING:
DO THIS PROCEDURE CAREFULLY. IF YOU DO NOT OBEY ALL THE INSTRUCTIONS IN THIS PROCEDURE, THE THRUST REVERSER HALF CAN CLOSE QUICKLY. IF PERSONS ARE BETWEEN THE THRUST REVERSER HALF AND THE ENGINE, THEY CAN GET INJURED.
ZONE: 400
FIN: 3400KM1 ** ON A/C NOT FOR ALL
FIN: 3400KM2 ** ON A/C NOT FOR ALL
FIN: 3410KM1 ** ON A/C NOT FOR ALL
FIN: 3410KM2 ** ON A/C NOT FOR ALL
1. Reason for the JobFIN: 3400KM1 ** ON A/C NOT FOR ALL
FIN: 3400KM2 ** ON A/C NOT FOR ALL
FIN: 3410KM1 ** ON A/C NOT FOR ALL
FIN: 3410KM2 ** ON A/C NOT FOR ALL
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 | CRANE 500 KG (1100 LB) |
| No specific | AR | WARNING NOTICE(S) |
| No specific | 1 | WRENCH - STANDARD |
| 636-3000-10GSE | 1 | TR HOLD OPEN STRUT TO PYLON |
| 636-3000-7GSE | 2 | THRUST REVERSER HANDLING SLING |
| 636GSE3009-901 | 1 | TR HOLD OPEN STRUT |
| 98D27803500001 | 1 | LOCKING TOOL ZERO POS |
| 98D27803500002 | 1 | LOCKING TOOL ZERO POS |
| ZONE/ACCESS | ZONE DESCRIPTION |
|---|---|
| 400 | POWER PLANT, NACELLES AND PYLONS |
| FOR [4020KM1] (POWER PLANT-DEMOUNTABLE, ENG 1) | |
| 437AL, 438AR | |
| FOR [4020KM2] (POWER PLANT-DEMOUNTABLE, ENG 2) | |
| 447AL, 448AR | |
| REFERENCE | DESIGNATION |
|---|---|
| TASK 71-00-00-860-833-A | Procedure to Prevent Engine Motoring |
| TASK 71-13-00-010-802-A | Opening of the Fan Cowl Doors |
| TASK 71-13-00-410-802-A | Closing of the Fan Cowl Doors |
| TASK 78-30-00-040-805-A | Deactivation of the Thrust Reverser System for Ground Maintenance |
| TASK 78-30-00-440-805-A | Reactivation of the Thrust Reverser System after Ground Maintenance |
| TASK 78-32-35-820-801-A | Adjustment of the Thrust Reverser Latches |
| TASK 78-36-02-400-801-A | Installation of the Thrust Reverser Door Opening System (DOS) Actuator |
Thrust Reverser Doors - OpeningSubtask 78-36-00-941-070-A ** ON A/C NOT FOR ALL
A. Safety Precautions
(1) Make sure that you did the procedure to prevent engine motoring
(Ref. AMM TASK 71-00-00-860-833).
(2) Make sure that the 98D27803500001 LOCKING TOOL ZERO POS or 98D27803500002 LOCKING TOOL ZERO POS is installed on the flap and slat control lever.
(3) Make sure that the WARNING NOTICE(S) are in position to tell persons not to operate the flaps and the slats.
Subtask 78-36-00-010-118-A ** ON A/C NOT FOR ALL (1) Make sure that you did the procedure to prevent engine motoring
(Ref. AMM TASK 71-00-00-860-833).
(2) Make sure that the 98D27803500001 LOCKING TOOL ZERO POS or 98D27803500002 LOCKING TOOL ZERO POS is installed on the flap and slat control lever.
(3) Make sure that the WARNING NOTICE(S) are in position to tell persons not to operate the flaps and the slats.
B. Get Access
(1) Make sure that the fan cowl doors are open (Ref. AMM TASK 71-13-00-010-802):
(a) FOR [4020KM1] (POWER PLANT-DEMOUNTABLE, ENG 1)
437AL, 438AR
(b) FOR [4020KM2] (POWER PLANT-DEMOUNTABLE, ENG 2)
447AL, 448AR.
(2) Make sure that the ACCESS PLATFORM 2M (6 FT) - ADJUSTABLE is in position.
Subtask 78-36-00-040-081-A ** ON A/C NOT FOR ALL (1) Make sure that the fan cowl doors are open (Ref. AMM TASK 71-13-00-010-802):
(a) FOR [4020KM1] (POWER PLANT-DEMOUNTABLE, ENG 1)
437AL, 438AR
(b) FOR [4020KM2] (POWER PLANT-DEMOUNTABLE, ENG 2)
447AL, 448AR.
(2) Make sure that the ACCESS PLATFORM 2M (6 FT) - ADJUSTABLE is in position.
C. Deactivation of the Thrust Reverser System for Ground Maintenance
4. ProcedureWARNING:
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 ground maintenance (Ref. AMM TASK 78-30-00-040-805).WARNING:
DO NOT KEEP OPEN A THRUST REVERSER DOOR WHEN THE WIND SPEED IS 46 MPH (74.0 KM/H) OR MORE. IF THE WIND MOVES THE THRUST REVERSER DOOR, INJURY TO PERSONS AND/OR DAMAGE TO EQUIPMENT CAN OCCUR.
WARNING:
BE CAREFUL IF YOU OPEN/CLOSE A THRUST REVERSER DOOR WHEN THE WIND SPEED IS 23 MPH (37 KM/H) OR MORE. IF THE WIND MOVES THE THRUST REVERSER DOOR, INJURY AND/OR DAMAGE TO EQUIPMENT CAN OCCUR.
WARNING:
WHEN YOU OPEN OR CLOSE THE THRUST REVERSER DOORS, MAKE SURE THAT THE AREA BELOW AND BETWEEN THE DOORS IS CLEAR. IF THE DOORS CLOSE SUDDENLY, INJURY TO PERSONS CAN OCCUR.
Subtask 78-36-00-410-096-A ** ON A/C NOT FOR ALL CAUTION:
YOU MUST NOT USE THE HANDLE OF THE LATCHES AS AN AID TO CLOSE THE THRUST REVERSER HALF ON THE V-GROOVE.
CAUTION:
BEFORE YOU CLOSE THE THRUST REVERSER COWL DOOR, MAKE SURE THAT HOOK OF THE LATCH L1 IS IN THE OPEN POSITION.
CAUTION:
DO NOT OPEN THE THRUST REVERSER DOOR MORE THAN 45 DEGREES FROM THE VERTICAL. DAMAGE TO THE THRUST REVERSER DOOR AND/OR PYLON CAN OCCUR.
A. Closing of the Left Thrust-Reverser Door NOTE: You must not close the thrust reverser cowl-doors at the same time. The thrust reverser cowl-doors must be closed one after the other.
(1) Lift the left thrust-reverser door (8) with the 636-3000-7GSE THRUST REVERSER HANDLING SLING sufficiently to release the pressure on the hold open rod (15). Refer to the manufacturer's instructions.WARNING:
MAKE SURE THAT YOU CORRECTLY ENGAGED THE THRUST-REVERSER HOLD-OPEN ROD BEFORE YOU MOVE BETWEEN THE ENGINE AND THE OPEN THRUST-REVERSER DOOR.
THE DOOR IS HEAVY AND WILL CLOSE QUICKLY IF THERE IS A FAILURE OF THE THRUST REVERSER SLING. THIS CAN CAUSE INJURY TO PERSONS AND DAMAGE TO EQUIPMENT.
(2) Release the end of the hold open rod (15) from the hold-open-rod support bracket (18) on the fan case. (a) If you used the 636-3000-10GSE TR HOLD OPEN STRUT TO PYLON or the 636GSE3009-901 TR HOLD OPEN STRUT as an alternative to the hold open rod, do not do steps 4.A.(2) thru 4.A.(3).
(b) Remove the 636-3000-10GSE TR HOLD OPEN STRUT TO PYLON or the 636GSE3009-901 TR HOLD OPEN STRUT.
(c) Refer to the instructions of the manufacturer.
(3) Fully retract the hold open rod (15).
(a) Make sure that you see the red band on the slide.
CAUTION:
DO NOT LET THE HOLD OPEN ROD FALL INTO THE POSITION AWAY FROM THE THRUST REVERSER DOOR. THIS CAN CAUSE DAMAGE TO THE HARDWARE.
(4) Slowly lower the hold open rod (15) away from the left thrust-reverser door (8). (5) Removal of the 636-3000-7GSE THRUST REVERSER HANDLING SLING.
WARNING:
DO NOT MOVE BETWEEN THE ENGINE AND THE OPEN THRUST REVERSER DOOR WHILE YOU OPERATE THE THRUST REVERSER SLING. THE THRUST REVERSER DOOR IS HEAVY. IT WILL CLOSE QUICKLY IF THE THRUST REVERSER SLING FAILS. THIS CAN CAUSE INJURIES TO PERSONNEL AND DAMAGE TO EQUIPMENT.
CAUTION:
DO NOT CLOSE THE LEFT THRUST REVERSER DOOR WITH THE HOLD OPEN ROD CONNECTED TO THE ENGINE FAN CASE. THIS CAN CAUSE DAMAGE TO THE EQUIPMENT.
(a) Slowly lower the left thrust-reverser door (8) until there is no tension on the thrust reverser sling strap. (b) Attach the top end of the hold open rod (15) to the hold-open rod bolt (14).
(c) For configuration 1 ( 636-3000-7GSE THRUST REVERSER HANDLING SLING Rev. A), disconnect the 636-3000-7GSE THRUST REVERSER HANDLING SLING as follows:
1 Disconnect the -701 strap assembly from the -101-2 hand chain hoist. Refer to the work instructions of the manufacturer of the sling.
2 Remove the -101-2 hand chain hoist from the CRANE 500 KG (1100 LB) or equivalent.
3 Disconnect the -601-1 round tube from the forward latch-beam bracket and the aft latch-beam bracket on the left thrust-reverser door (8). Remove the -601-1 round tube, the -601-2 round tube, the two -604 stop assemblies and the -701 strap assembly. Refer to the work instructions of the manufacturer of the sling.
4 Disconnect the -901 shield mat from the left thrust-reverser door (8). Refer to the work instructions of the manufacturer of the sling.
5 Remove the forward latch-beam bracket and the aft latch-beam bracket from the bottom of the left thrust-reverser door (8). Refer to the work instructions of the manufacturer of the sling.
(d) For configuration 2 ( 636-3000-7GSE THRUST REVERSER HANDLING SLING Rev. B and after), disconnect the 636-3000-7GSE THRUST REVERSER HANDLING SLING as follows:
1 Disconnect the -1001 strap assembly from the -101-2 hand chain hoist. Refer to the work instructions of the manufacturer of the sling.
2 Remove the -101-2 hand chain hoist from the CRANE 500 KG (1100 LB) or equivalent.
3 Disconnect the -1001 strap assembly from the hoist shackles on the -1002 forward latch-beam bracket and the -1003 aft latch-beam bracket. Refer to the work of the manufacturer of the sling.
4 Disconnect the -901 shield mat from the left thrust-reverser door (8). Refer to the work instructions of the manufacturer of the sling.
5 Remove the -1002 forward latch beam-bracket and the -1003 aft latch-beam bracket from the bottom of the left thrust-reverser door (8). Refer to the work instructions of the manufacturer of the sling.
B. Closing of the Right Thrust-Reverser Door
(a) If you used the 636-3000-10GSE TR HOLD OPEN STRUT TO PYLON or the 636GSE3009-901 TR HOLD OPEN STRUT as an alternative to the hold open rod, do not do steps 4.B.(2) thru 4.B.(3).
(b) Remove the 636-3000-10GSE TR HOLD OPEN STRUT TO PYLON or the 636GSE3009-901 TR HOLD OPEN STRUT.
(c) Refer to the instructions of the manufacturer.
(3) Fully retract the hold open rod (17).
(a) Make sure that you see the red band on the slide.
(5) Removal of the 636-3000-7GSE THRUST REVERSER HANDLING SLING.
(b) Attach the top end of the hold open rod (17) to the hold-open rod bolt (16).
(c) For configuration 1 ( 636-3000-7GSE THRUST REVERSER HANDLING SLING Rev. A), disconnect the 636-3000-7GSE THRUST REVERSER HANDLING SLING as follows:
1 Disconnect the -701 strap assembly from the -101-2 hand chain hoist. Refer to the work instructions of the manufacturer of the sling.
2 Remove the -101-2 hand chain hoist from the CRANE 500 KG (1100 LB) or equivalent.
3 Disconnect the -601-1 round tube from the forward latch-beam bracket and the aft latch-beam bracket on the right thrust-reverser door (1). Remove the -601-1 round tube, the -601-2 round tube, the two -604 stop assemblies and the -701 strap assembly. Refer to the work instructions of the manufacturer of the sling.
4 Disconnect the -901 shield mat from the right thrust-reverser door (1). Refer to the work instructions of the manufacturer of the sling.
5 Remove the forward latch-beam bracket and the aft latch-beam bracket from the bottom of the right thrust-reverser door (1). Refer to the work instructions of the manufacturer of the sling.
(d) For configuration 2 ( 636-3000-7GSE THRUST REVERSER HANDLING SLING Rev. B and after), disconnect the 636-3000-7GSE THRUST REVERSER HANDLING SLING as follows:
1 Disconnect the -1001 strap assembly from the -101-2 hand chain hoist. Refer to the work instructions of the manufacturer of the sling.
2 Remove the -101-2 hand chain hoist from the CRANE 500 KG (1100 LB) or equivalent.
3 Disconnect the -1001 strap assembly from the hoist shackles on the -1002 forward latch-beam bracket and the -1003 aft latch-beam bracket. Refer to the work instructions of the manufacturer of the sling.
4 Disconnect the -901 shield mat from the right thrust-reverser door (1). Refer to the work instructions of the manufacturer of the sling.
5 Remove the -1002 forward latch-beam bracket and the -1003 aft latch-beam bracket from the bottom of the right thrust reverser door (1). Refer to the work instructions of the manufacturer of the sling.
Subtask 78-36-00-410-098-A ** ON A/C NOT FOR ALL CAUTION:
DO NOT OPEN THE THRUST REVERSER DOOR MORE THAN 45 DEGREES FROM THE VERTICAL. DAMAGE TO THE THRUST REVERSER DOOR AND/OR PYLON CAN OCCUR.
(1) Lift the right thrust-reverser door (1) with the 636-3000-7GSE THRUST REVERSER HANDLING SLING sufficiently to release the pressure on the hold open rod (17). Refer to the manufacturer's instructions.WARNING:
MAKE SURE THAT YOU CORRECTLY ENGAGED THE THRUST-REVERSER HOLD-OPEN ROD BEFORE YOU MOVE BETWEEN THE ENGINE AND THE OPEN THRUST-REVERSER DOOR.
THE DOOR IS HEAVY AND WILL CLOSE QUICKLY IF THERE IS A FAILURE OF THE THRUST REVERSER SLING. THIS CAN CAUSE INJURY TO PERSONS AND DAMAGE TO EQUIPMENT.
(2) Release the end of the hold open rod (17) from the hold-open-rod support bracket (19) on the fan case. (a) If you used the 636-3000-10GSE TR HOLD OPEN STRUT TO PYLON or the 636GSE3009-901 TR HOLD OPEN STRUT as an alternative to the hold open rod, do not do steps 4.B.(2) thru 4.B.(3).
(b) Remove the 636-3000-10GSE TR HOLD OPEN STRUT TO PYLON or the 636GSE3009-901 TR HOLD OPEN STRUT.
(c) Refer to the instructions of the manufacturer.
(3) Fully retract the hold open rod (17).
(a) Make sure that you see the red band on the slide.
CAUTION:
DO NOT LET THE HOLD OPEN ROD FALL INTO THE POSITION AWAY FROM THE THRUST REVERSER DOOR. THIS CAN CAUSE DAMAGE TO THE HARDWARE.
(4) Slowly lower the hold open rod (17) away from the right thrust-reverser door (1). (5) Removal of the 636-3000-7GSE THRUST REVERSER HANDLING SLING.
WARNING:
DO NOT MOVE BETWEEN THE ENGINE AND THE OPEN THRUST REVERSER DOOR WHILE YOU OPERATE THE THRUST REVERSER SLING. THE THRUST REVERSER DOOR IS HEAVY. IT WILL CLOSE QUICKLY IF THE THRUST REVERSER SLING FAILS. THIS CAN CAUSE INJURIES TO PERSONNEL AND DAMAGE TO EQUIPMENT.
CAUTION:
DO NOT CLOSE THE RIGHT THRUST REVERSER DOOR WITH THE HOLD OPEN ROD CONNECTED TO THE ENGINE FAN CASE. THIS CAN CAUSE DAMAGE TO THE EQUIPMENT.
(a) Slowly lower the right thrust-reverser door (1) until there is no tension on the thrust-reverser sling strap. (b) Attach the top end of the hold open rod (17) to the hold-open rod bolt (16).
(c) For configuration 1 ( 636-3000-7GSE THRUST REVERSER HANDLING SLING Rev. A), disconnect the 636-3000-7GSE THRUST REVERSER HANDLING SLING as follows:
1 Disconnect the -701 strap assembly from the -101-2 hand chain hoist. Refer to the work instructions of the manufacturer of the sling.
2 Remove the -101-2 hand chain hoist from the CRANE 500 KG (1100 LB) or equivalent.
3 Disconnect the -601-1 round tube from the forward latch-beam bracket and the aft latch-beam bracket on the right thrust-reverser door (1). Remove the -601-1 round tube, the -601-2 round tube, the two -604 stop assemblies and the -701 strap assembly. Refer to the work instructions of the manufacturer of the sling.
4 Disconnect the -901 shield mat from the right thrust-reverser door (1). Refer to the work instructions of the manufacturer of the sling.
5 Remove the forward latch-beam bracket and the aft latch-beam bracket from the bottom of the right thrust-reverser door (1). Refer to the work instructions of the manufacturer of the sling.
(d) For configuration 2 ( 636-3000-7GSE THRUST REVERSER HANDLING SLING Rev. B and after), disconnect the 636-3000-7GSE THRUST REVERSER HANDLING SLING as follows:
1 Disconnect the -1001 strap assembly from the -101-2 hand chain hoist. Refer to the work instructions of the manufacturer of the sling.
2 Remove the -101-2 hand chain hoist from the CRANE 500 KG (1100 LB) or equivalent.
3 Disconnect the -1001 strap assembly from the hoist shackles on the -1002 forward latch-beam bracket and the -1003 aft latch-beam bracket. Refer to the work instructions of the manufacturer of the sling.
4 Disconnect the -901 shield mat from the right thrust-reverser door (1). Refer to the work instructions of the manufacturer of the sling.
5 Remove the -1002 forward latch-beam bracket and the -1003 aft latch-beam bracket from the bottom of the right thrust reverser door (1). Refer to the work instructions of the manufacturer of the sling.
C. Engage the closure assist assembly as follows:
(a) If the align ramps are damaged or missing, have two persons lift and push the thrust reverser door V-blades into the V-grooves on the engine case.
(b) Open the clip assembly on the stow bracket (10).
1 Move the closure assist assembly (11) out of the stow bracket (10).
(c) Hold the free rod end of the closure assist assembly (11) and turn the barrel of the closure assist assembly (11) to make it longer.
1 Increase the length until the rod end can be attached to the closure assist hook (13) on the right thrust reverser door (1).
2 Make sure that approximately an equal amount of threads shows on each side of the barrel of the closure assist assembly (11).
(d) Engage the closure assist assembly (11) in the closure assist hook (13).
1 Continue to turn until you can engage the L1A latch (2) at the bottom of the doors.
(a) Have one person push the left thrust reverser door (8).
(b) Have another person push the right thrust reverser door (1).
(c) Push the thrust reverser doors together until you can engage the L1A latch (2) at the bottom of the doors.
Subtask 78-36-00-410-101-A ** ON A/C NOT FOR ALL CAUTION:
MAKE SURE THE THRUST REVERSER DOOR V-BLADES CORRECTLY INSERT INTO THE V-GROOVE ON THE ENGINE CASE. IF YOU DO NOT DO THIS, THE THRUST REVERSER DOORS WILL NOT LATCH CORRECTLY AND CAN CAUSE DAMAGE.
(1) Align the left thrust reverser door (8) and the right thrust reverser door (1) with the left and right align ramps.(a) If the align ramps are damaged or missing, have two persons lift and push the thrust reverser door V-blades into the V-grooves on the engine case.
CAUTION:
DISENGAGE THE CLOSURE ASSIST FITTING FROM THE CLOSURE ASSIST ASSEMBLY BEFORE YOU DISENGAGE THE CLIP ASSEMBLY ON THE STOW BRACKET. IF YOU DISENGAGE THE CLIP ASSEMBLY ON THE STOW BRACKET FIRST, DAMAGE TO THE CLOSURE ASSIST ASSEMBLY CAN OCCUR.
(2) Engage the closure assist assembly (11). If the closure assist assembly (11) is damaged or missing, go to step 4.C.(3).NOTE: The closure assist assembly (11) only helps to close the L1A latch (2) and the L1B latch (3). It is not necessary to use the closure assist assembly (11) if you can close these latches without it.
(a) Disengage the spring clip on the closure assist fitting (12) from the closure assist assembly (11).(b) Open the clip assembly on the stow bracket (10).
1 Move the closure assist assembly (11) out of the stow bracket (10).
(c) Hold the free rod end of the closure assist assembly (11) and turn the barrel of the closure assist assembly (11) to make it longer.
1 Increase the length until the rod end can be attached to the closure assist hook (13) on the right thrust reverser door (1).
2 Make sure that approximately an equal amount of threads shows on each side of the barrel of the closure assist assembly (11).
(d) Engage the closure assist assembly (11) in the closure assist hook (13).
CAUTION:
DO NOT CONTINUE TO TURN THE CLOSURE ASSIST ASSEMBLY IF IT STOPS. THE CLOSURE ASSIST ASSEMBLY HAS A STOP TO MAKE SURE THE TWO THRUST REVERSERS DO NOT HIT EACH OTHER. IF YOU DO NOT OBEY THIS INSTRUCTION, DAMAGE TO THE EQUIPMENT CAN OCCUR.
(e) Turn the barrel of the closure assist assembly (11) with the WRENCH - STANDARD to pull the two thrust reverser doors together.1 Continue to turn until you can engage the L1A latch (2) at the bottom of the doors.
NOTE: If you cannot close another latch, you can tighten the closure assist assembly (11) more to remove the force on that latch.
(3) If the closure assist assembly (11) is damaged or missing, do the steps that follow:(a) Have one person push the left thrust reverser door (8).
(b) Have another person push the right thrust reverser door (1).
(c) Push the thrust reverser doors together until you can engage the L1A latch (2) at the bottom of the doors.
D. Closing of the L1A Latch and L1B Latch
Subtask 78-36-00-410-102-A ** ON A/C NOT FOR ALL CAUTION:
MAKE SURE THE LATCHES CLOSE WITH A FORCE NO MORE THAN 60 LBF (27.2 KGF). IF THE FORCE IS TOO HIGH, YOU CAN CAUSE DAMAGE TO THE EQUIPMENT.
(1) Engage and close the L1A latch (2) and L1B latch (3) on the bottom of the thrust reverser doors. E. Installation of the Closure Assist Assembly in its Stowed Position
(a) Turn the barrel of the closure assist assembly (11) to make it longer.
(b) Increase the length of the closure assist assembly (11) until the rod end disengages from the closure assist hook (13).
(c) Turn the barrel of the closure assist assembly (11) to make it shorter.
(d) Decrease the length of the closure assist assembly (11) until the rod end fits into the hole in the stow bracket (10).
(e) Put the closure assist assembly (11) in the stow bracket (10).
(f) Close the clip assembly on the stow bracket (10) to safety the closure assist assembly (11).
(g) Make sure that the rod end stays in the hole on the stow bracket.
(h) Move the flag on the closure assist fitting (12) to put the spring clip on the closure assist assembly (11).
Subtask 78-36-00-410-103-A ** ON A/C NOT FOR ALL CAUTION:
PUT THE CLOSURE ASSIST ASSEMBLY IN ITS STORAGE POSITION IMMEDIATELY AFTER YOU CLOSE THE L1A LATCH AND L1B LATCH. FAILURE TO DO SO CAN RESULT IN DAMAGE TO THE CLOSURE ASSIST ASSEMBLY OR THE ADJACENT STRUCTURE.
(1) If you engaged the closure assist assembly (11), put the closure assist assembly (11) in its stowed position. (a) Turn the barrel of the closure assist assembly (11) to make it longer.
(b) Increase the length of the closure assist assembly (11) until the rod end disengages from the closure assist hook (13).
(c) Turn the barrel of the closure assist assembly (11) to make it shorter.
(d) Decrease the length of the closure assist assembly (11) until the rod end fits into the hole in the stow bracket (10).
(e) Put the closure assist assembly (11) in the stow bracket (10).
(f) Close the clip assembly on the stow bracket (10) to safety the closure assist assembly (11).
(g) Make sure that the rod end stays in the hole on the stow bracket.
(h) Move the flag on the closure assist fitting (12) to put the spring clip on the closure assist assembly (11).
NOTE: The flag is a red color so that you will see it if it is not correctly stowed.
F. Closing of the Remaining Thrust Reverser Door Latches
(2) Engage and close the bifurcation latch system handle (4) on the bottom of the thrust reverser doors.
(3) Engage and close the L3 latch (6) on the bottom of the thrust reverser doors.
(4) Engage and close the L4 latch (7) on the bottom of the thrust reverser doors.
(5) Engage and close the L5 latch (9) on the core cowl.
(6) Measure the force necessary to close each latch one at a time. Do Step 4.D and 4.F.(1) thru Step 4.F.(5) again. If you measure a force that is not between 30 lbf (13.34 daN) and 36 lbf (16.01 daN), adjust the thrust reverser latch (Ref. AMM TASK 78-32-35-820-801).
(7) Make sure that all the latch handles are flush with the adjacent thrust reverser surface.
(8) Make sure the latch triggers are flush with the latch handle surfaces.
(a) If a latch handle or latch trigger is not flush, open the latch and close it again. Refer to the applicable step above.
Subtask 78-36-00-420-058-A ** ON A/C NOT FOR ALL CAUTION:
ALWAYS CLOSE THE LATCHES ON THE THRUST REVERSER IN THE SEQUENCE THAT FOLLOWS. YOU CAN DAMAGE THE THRUST REVERSER IF YOU DO NOT CLOSE THE LATCHES IN THE CORRECT SEQUENCE.
CAUTION:
MAKE SURE THE LATCHES CLOSE WITH A FORCE NO MORE THAN 60 LBF (27.2 KGF). IF THE FORCE IS TOO HIGH, YOU CAN CAUSE DAMAGE TO THE EQUIPMENT.
(1) Engage and close the L2 latch (5) on the bottom of the thrust reverser doors. (2) Engage and close the bifurcation latch system handle (4) on the bottom of the thrust reverser doors.
(3) Engage and close the L3 latch (6) on the bottom of the thrust reverser doors.
(4) Engage and close the L4 latch (7) on the bottom of the thrust reverser doors.
(5) Engage and close the L5 latch (9) on the core cowl.
(6) Measure the force necessary to close each latch one at a time. Do Step 4.D and 4.F.(1) thru Step 4.F.(5) again. If you measure a force that is not between 30 lbf (13.34 daN) and 36 lbf (16.01 daN), adjust the thrust reverser latch (Ref. AMM TASK 78-32-35-820-801).
(7) Make sure that all the latch handles are flush with the adjacent thrust reverser surface.
(8) Make sure the latch triggers are flush with the latch handle surfaces.
(a) If a latch handle or latch trigger is not flush, open the latch and close it again. Refer to the applicable step above.
G. Installation of the Door Opening System (DOS) Actuator
(1) Install the DOS actuator on the thrust reverser door (1) or (8) as necessary (Ref. AMM TASK 78-36-02-400-801).
5. Close-up(1) Install the DOS actuator on the thrust reverser door (1) or (8) as necessary (Ref. AMM TASK 78-36-02-400-801).
Subtask 78-36-00-440-071-A ** ON A/C NOT FOR ALL
A. Do the reactivation of the thrust reverser system after ground maintenance (Ref. AMM TASK 78-30-00-440-805).
Subtask 78-36-00-410-100-A ** ON A/C NOT FOR ALL B. 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 71-13-00-410-802):
(a) FOR [4020KM1] (POWER PLANT-DEMOUNTABLE, ENG 1)
437AL, 438AR
(b) FOR [4020KM2] (POWER PLANT-DEMOUNTABLE, ENG 2)
447AL, 448AR.
(3) Remove the access platform(s).
(4) Remove the WARNING NOTICE(S).
(5) Remove the 98D27803500001 LOCKING TOOL ZERO POS or 98D27803500002 LOCKING TOOL ZERO POS.
(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 71-13-00-410-802):
(a) FOR [4020KM1] (POWER PLANT-DEMOUNTABLE, ENG 1)
437AL, 438AR
(b) FOR [4020KM2] (POWER PLANT-DEMOUNTABLE, ENG 2)
447AL, 448AR.
(3) Remove the access platform(s).
(4) Remove the WARNING NOTICE(S).
(5) Remove the 98D27803500001 LOCKING TOOL ZERO POS or 98D27803500002 LOCKING TOOL ZERO POS.