Removal of the C-Duct Non-Locking Actuator [IAE]

TASK 78-32-48-000-010-A
Removal of the C-Duct Non-Locking Actuator

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

1. Reason for the Job
This task supplies the data to remove the left and right thrust reverser C-duct non-locking actuators.
2. Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment

REFERENCE	QTY	DESIGNATION
No specific	AR	ACCESS PLATFORM 2M (6 FT) - ADJUSTABLE
No specific	AR	CAP - BLANKING
No specific	AR	CONTAINER - CLEAN, APPLICABLE
No specific	AR	WARNING NOTICE(S)
IAE1N20049	2	PIN - LOCKOUT ACTUATOR

B. Work Zones and Access Panels

ZONE/ACCESS	ZONE DESCRIPTION
FOR [1000EM1] (ENGINE-1)
437AL, 438AR, 451BL, 452BR
FOR [1000EM2] (ENGINE-2)
447AL, 448AR, 461BL, 462BR

C. Referenced Information

REFERENCE	DESIGNATION
TASK 71-13-00-010-010-A	Opening 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 78-32-00-860-010-A	Manual Extension of the Thrust Reverser Translating Sleeves
TASK 78-32-19-000-010-A	Removal of the Thrust Reverser Deflector Boxes
Actuator Access Panels
Locking Actuator
Actuator Forward and Aft Supports and Rod-End Connection
Actuator Connections - Left Side
Actuator Connections - Right Side

3. Job Set-up
Subtask 78-32-48-941-050-A ** ON A/C NOT FOR ALL

A. Safety Precautions
(1) On the center pedestal, on the ENG panel 115VU:
(a) Put a WARNING NOTICE(S) 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(S) to tell persons not to energize the FADEC 1(2).

Subtask 78-32-48-010-050-A ** ON A/C NOT FOR ALL

B. Get Access
(1) Open the fan cowls (Ref. AMM TASK 71-13-00-010-010):
(a) FOR [1000EM1] (ENGINE-1)
437AL 438AR
(b) FOR [1000EM2] (ENGINE-2)
447AL 448AR
(2) Put the ACCESS PLATFORM 2M (6 FT) - ADJUSTABLE in position.

Subtask 78-32-48-040-050-A ** ON A/C NOT FOR ALL

C. Deactivate the Thrust Reverser

WARNING: MAKE SURE THAT THE THRUST REVERSER HYDRAULIC CONTROL UNIT (HCU) IS DEACTIVATED BEFORE YOU DO WORK ON OR AROUND THE THRUST REVERSER. IF THE HCU IS NOT DEACTIVATED, THERE IS A RISK OF UNWANTED THRUST REVERSER OPERATION WHICH CAN CAUSE INJURY TO PERSONS AND/OR DAMAGE TO EQUIPMENT.

(1) Deactivate the thrust reverser Hydraulic Control Unit (HCU) (Ref. AMM TASK 78-30-00-040-012).

Subtask 78-32-48-010-051-A ** ON A/C NOT FOR ALL

D. Remove the access panel for the applicable actuator.

Actuator Access Panels ** ON A/C NOT FOR ALL

(1) FOR [1000EM1] (ENGINE-1)
451BL 452BR
(2) FOR [1000EM2] (ENGINE-2)
461BL 462BR

Subtask 78-32-48-020-051-A ** ON A/C NOT FOR ALL

E. Put the locking actuators in the unlocked position.

Locking Actuator ** ON A/C NOT FOR ALL

(1) Move the lock levers (2) on the left and right locking actuators (1) aft to the unlocked position and install the IAE1N20049 PIN - LOCKOUT ACTUATOR (3) to hold the lock levers in the unlocked position.

4. Procedure
Subtask 78-32-48-010-052-A ** ON A/C NOT FOR ALL

A. Manually extend the translating sleeve sufficiently to decrease the pressure on the seal (40) (Ref. AMM TASK 78-32-00-860-010).

Actuator Forward and Aft Supports and Rod-End Connection ** ON A/C NOT FOR ALL

Subtask 78-32-48-020-052-A ** ON A/C NOT FOR ALL

B. Disconnect the electrical connector (18) from the non-locking actuator (15).

Actuator Connections - Left Side ** ON A/C NOT FOR ALL

Subtask 78-32-48-620-050-A ** ON A/C NOT FOR ALL

C. Install CAP - BLANKING on the electrical connector (18) and on the receptacle on the non-locking actuator (15).

Actuator Connections - Left Side ** ON A/C NOT FOR ALL

Subtask 78-32-48-941-051-A ** ON A/C NOT FOR ALL

D. Put a CONTAINER - CLEAN, APPLICABLE below the hydraulic connection cap on the locking actuator. Loosen the cap and drain the hydraulic fluid from the HCU and the locking actuator into the CONTAINER - CLEAN, APPLICABLE.

Subtask 78-32-48-020-053-A ** ON A/C NOT FOR ALL

E. Disconnection of the Hydraulic Hoses and Tubes

Actuator Connections - Left Side ** ON A/C NOT FOR ALL

Actuator Connections - Right Side ** ON A/C NOT FOR ALL

WARNING: DO NOT GET HYDRAULIC FLUID ON YOUR SKIN, IN YOUR EYES OR IN YOUR MOUTH. HYDRAULIC FLUID IS POISONOUS AND CAN GO THROUGH YOUR SKIN AND INTO YOUR BODY. FLUSH HYDRAULIC FLUID FROM YOUR EYES, MOUTH OR SKIN WITH WATER. GET MEDICAL AID IF YOU GET HYDRAULIC FLUID IN YOUR EYES OR MOUTH.

CAUTION: DO NOT LET HYDRAULIC FLUID FALL ON THE ENGINE. UNWANTED HYDRAULIC FLUID MUST BE REMOVED IMMEDIATELY WITH A CLEAN LINT FREE CLOTH. THE FLUID CAN CAUSE DAMAGE TO THE SURFACE PROTECTION AND TO SOME PARTS.

(1) Remove the tube and hose clamps, three places.
(2) Disconnect the cross-over hydraulic hose (13) from the non-locking actuator (15).
(3) Disconnect the hose nut of the cross-over flexshaft/hose (14) from the non-locking actuator (15).
(4) Pulling the end of the flexshaft from the actuator

CAUTION: DO NOT REMOVE EITHER OF THE TRIANGULAR-FLANGED-ADAPTERS WITH THREE WIRELOCKED BOLTS. IF A TRIANGULAR-FLANGED-ADAPTER IS REMOVED, DAMAGE TO THE ACTUATOR CAN OCCUR.

(a) Pull the end of the flexshaft (19) from the actuator.

NOTE: Do not turn the flexshaft more than one-eighth of a turn while one end is still engaged.

(5) Disconnect the tube nut of the lower hydraulic tube (16) from the non-locking actuator.
(6) Disconnect the tube nut of the lower flexshaft/tube (17) from the non-locking actuator.
(7) Pulling the flexshaft from the non-locking actuator socket

CAUTION: DO NOT REMOVE EITHER OF THE TRIANGULAR-FLANGED-ADAPTERS WITH THREE WIRELOCKED BOLTS. IF A TRIANGULAR-FLANGED-ADAPTER IS REMOVED, DAMAGE TO THE ACTUATOR CAN OCCUR.

(a) Pull the flexshaft (20) from the non-locking actuator socket.

NOTE: Move the actuator as necessary so that you can remove the tube fitting and flexshaft.

NOTE: Do not turn the flexshaft more than one-eighth of a turn while one end is still engaged.

Subtask 78-32-48-620-051-A ** ON A/C NOT FOR ALL

F. Install CAP - BLANKING on the hoses and tubes and on the non-locking actuator.

Actuator Connections - Left Side ** ON A/C NOT FOR ALL

Subtask 78-32-48-010-053-C ** ON A/C NOT FOR ALL

G. Disconnection of the Non-locking Actuator from the Forward and Aft Supports

Actuator Forward and Aft Supports and Rod-End Connection ** ON A/C NOT FOR ALL

Post SBN 78-0199

NOTE: It may be required to remove the blank cascade to gain access to the loose cushion half bolts (43) at the aft end of the actuator. Refer to the removal instructions (Ref. AMM TASK 78-32-19-000-010).

(1) Remove the two actuator pins (37) that attach the actuator to the forward support (39).
(a) Remove the two actuator retainer pins (38).
(b) Remove the actuator pins (38) from the actuator and the forward support (39).
(2) Remove the bolt (31) and the bushing (32) that attach the actuator rod end to the translating sleeve bracket (34).
(3) Remove the actuator from the Aft support.
(a) Make a mark on each half of the cushion halves (36). These marks will be used to align the cushion halves on installation.

NOTE: The loose cushion half installed on the actuator is not concentric. When it is installed it must be installed in the same position from which it was removed. Make a mark on it before you remove it.

(b) Remove the two nuts (44) and (47), four washers (45) and (46), two bolts (43) and (48) and the clamp half (49).

Subtask 78-32-48-020-050-A ** ON A/C NOT FOR ALL

H. Removal of the Non-locking Actuator

Actuator Connections - Right Side ** ON A/C NOT FOR ALL

Actuator Forward and Aft Supports and Rod-End Connection ** ON A/C NOT FOR ALL

(1) Move the actuator (15) away from the aft support (28). The C-ducts must be opened sufficiently to let the actuator be removed.
(2) Move the actuator forward and remove it through the C-duct fixed structure.
(3) Carefully move the seal (40) to the rear, off the actuator.
(4) Remove the container and discard the drained hydraulic fluid.

[Rev.10 from 2021] 2026.04.01 03:28:47 UTC