Installation of the Left Thrust Reverser Blocker Door Drag Links [IAE]

TASK 78-32-42-400-010-A
Installation of the Left Thrust Reverser Blocker Door Drag Links

FIN: 1000EM1 ** ON A/C NOT FOR ALL
FIN: 1000EM2 ** ON A/C NOT FOR ALL

1. Reason for the Job
Self explanatory
2. Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment

REFERENCE	QTY	DESIGNATION
No specific	AR	WARNING NOTICE(S)
No specific	Torque wrench: range to between 25 and 20 lbf.in (0.28 and 0.23 m.daN )
No specific	Torque wrench: range to between 70 and 50 lbf.in (0.79 and 0.57 m.daN )

B. Work Zones and Access Panels

ZONE/ACCESS	ZONE DESCRIPTION
FOR [1000EM1] (ENGINE-1)
437AL, 438AR, 451AL
FOR [1000EM2] (ENGINE-2)
447AL, 448AR, 461AL

C. Expendable Parts

FIG.ITEM	DESIGNATION	IPC-CSN
3	COTTER PIN	AIPC 78-32-45-81-060

D. Referenced Information

REFERENCE	DESIGNATION
TASK 70-23-11-911-013-A	General Torque Tightening Techniques
TASK 70-40-11-911-014-A	Locking Devices General Information
TASK 71-13-00-010-010-A	Opening of the Fan Cowls 437AL(447AL),438AR(448AR)
TASK 71-13-00-410-010-A	Closing of the Fan Cowls 437AL(447AL),438AR(448AR)
TASK 78-30-00-040-012-A	Deactivation of the Thrust Reverser Hydraulic Control Unit (HCU) for Ground Maintenance
TASK 78-30-00-440-012-A	Re-activation of the Thrust Reverser Hydraulic Control Unit (HCU) after Ground Maintenance
TASK 78-31-00-710-041-A	Operational Test of the Thrust Reverser System with the CFDS
TASK 78-31-00-710-041-A-02	Operational test of the Thrust Reverser without the CFDS and Engine Running
TASK 78-32-00-010-010-A	Opening of the Thrust Reverser Halves
TASK 78-32-00-410-010-A	Closing of the Thrust Reverser Halves
TASK 78-32-00-860-010-A	Manual Extension of the Thrust Reverser Translating Sleeves
TASK 78-32-00-860-011-A	Manual Retraction of the Thrust Reverser Translating Sleeves
Left and Right Thrust-Reverser Blocker-Door Drag-Links

3. Job Set-up
Subtask 78-32-42-860-055-A ** ON A/C NOT FOR ALL

A. Aircraft Maintenance Configuration
(1) On the center pedestal, on the ENG panel 115VU, make sure that a WARNING NOTICE(S) is in position to tell persons not to start the engine.
(2) On the overhead maintenance panel 50VU, make sure that the ON legend of the ENG/FADEC GND PWR/1(2) pushbutton switch is off. Make sure that a WARNING NOTICE(S) is in position to tell persons not to energize the FADEC 1(2).

Subtask 78-32-42-010-059-A ** ON A/C NOT FOR ALL

B. Get Access
(1) Make sure that the fan cowl doors are open: (Ref. AMM TASK 71-13-00-010-010)
(a) FOR [1000EM1] (ENGINE-1)
437AL 438AR
(b) FOR [1000EM2] (ENGINE-2)
447AL 448AR
(2) Make sure that the left thrust reverser is open: (Ref. AMM TASK 78-32-00-010-010)
(a) FOR [1000EM1] (ENGINE-1)
451AL
(b) FOR [1000EM2] (ENGINE-2)
461AL
(3) Make sure that the translating sleeve is extended to approximately 3 in. (76.2 mm) to 4 in. (101.6 mm) (Ref. AMM TASK 78-32-00-860-010).

Subtask 78-32-42-040-056-A ** ON A/C NOT FOR ALL

C. Make sure that the thrust reverser Hydraulic Control Unit (HCU) is deactivated (Ref. AMM TASK 78-30-00-040-012).

4. Procedure
Subtask 78-32-42-420-052-A ** ON A/C NOT FOR ALL

A. Install the drag link

Left and Right Thrust-Reverser Blocker-Door Drag-Links ** ON A/C NOT FOR ALL

PRE SBN 78-0013
(1) Put the drag link (2) in to position on the blocker door.

NOTE: Link is installed with thick end facing forward.

(2) Install the washers (10), the bolt (11) and the nut (9).
(3) TORQUE the nut (9) to between 70 and 50 lbf.in (0.79 and 0.57 m.daN )

(Ref. AMM TASK 70-23-11-911-013).

Subtask 78-32-42-420-053-A ** ON A/C NOT FOR ALL

B. Install the drag link

Left and Right Thrust-Reverser Blocker-Door Drag-Links ** ON A/C NOT FOR ALL

SBN 78-0013: Changed attachment of the drag link to the blocker door.
(1) Put the drag link (2) in to position on the blocker door.

NOTE: Link is installed with thick end facing forward.

(2) Install the spacers (12), the washers (10), the bolt (11) and the nut (9).
(3) TORQUE the nut (9) to between 70 and 50 lbf.in (0.79 and 0.57 m.daN )

(Ref. AMM TASK 70-23-11-911-013).

Subtask 78-32-42-420-054-A ** ON A/C NOT FOR ALL

C. Connect the drag link to the fitting

Left and Right Thrust-Reverser Blocker-Door Drag-Links ** ON A/C NOT FOR ALL

PRE SBN 78-0032
(1) Put the drag link (2) in to position in the fitting (6).

NOTE: Link is installed with thick end facing forward.

(2) Install the pin (5) or the bolt (8), the washers (4) and the nut (7).
(3) Safety the pin (5) or the nut (7) with a new AIPC 78-32-45-81-060 COTTER PIN (3) (Ref. AMM TASK 70-40-11-911-014).

Subtask 78-32-42-420-055-A ** ON A/C NOT FOR ALL

D. Connect the drag link to the fitting.

Left and Right Thrust-Reverser Blocker-Door Drag-Links ** ON A/C NOT FOR ALL

SBN 78-0032: Changed the attachment of the drag link to the fitting.
(1) Put the drag link (2) in position in the fitting (6).

NOTE: The link is installed with the thick end facing forward.

(2) Install the bolt (8), the washers (4) (for A1 engines) or the washers (for A5 engines) and the nut (7).

NOTE:

Left and Right Thrust-Reverser Blocker-Door Drag-Links ** ON A/C NOT FOR ALL

(3) TORQUE the nut (7) to between 25 and 20 lbf.in (0.28 and 0.23 m.daN )

(Ref. AMM TASK 70-23-11-911-013).

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.

(4) Safety the nut (7) with a new AIPC 78-32-45-81-060 COTTER PIN (3) (Ref. AMM TASK 70-40-11-911-014).

5. Close-up
Subtask 78-32-42-410-055-A ** ON A/C NOT FOR ALL

A. Close Access
(1) Make sure that the work area is clean and clear of tools and other items.
(2) Close the left thrust reverser half (Ref. AMM TASK 78-32-00-410-010).
(a) FOR [1000EM1] (ENGINE-1)
451AL.
(b) FOR [1000EM2] (ENGINE-2)
461AL.
(3) Manually retract the thrust reverser translating sleeve (Ref. AMM TASK 78-32-00-860-011).

Subtask 78-32-42-440-053-A ** ON A/C NOT FOR ALL

B. Activate the thrust reverser hydraulic control unit (HCU) (Ref. AMM TASK 78-30-00-440-012).

Subtask 78-32-42-410-056-A ** ON A/C NOT FOR ALL

C. Close Access
(1) Close the fan cowls (Ref. AMM TASK 71-13-00-410-010)
(a) FOR [1000EM1] (ENGINE-1)
437AL 438AR.
(b) FOR [1000EM2] (ENGINE-2)
447AL 448AR.
(2) Remove the WARNING NOTICE(S).

Subtask 78-32-42-710-050-A ** ON A/C NOT FOR ALL

D. Operational Test
(1) Do an operational test of the thrust reverser system (Ref. AMM TASK 78-31-00-710-041).

NOTE: As an alternative procedure, you can do the operational test without the CFDS (Ref. AMM TASK 78-31-00-710-041).

[Rev.10 from 2021] 2026.04.01 13:12:24 UTC