Installation of the Right C-Duct Flexible Synchronous Cables and Tubes [IAE]

TASK 78-32-74-400-010-A
Installation of the Right C-Duct Flexible Synchronous Cables and Tubes

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.

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 information to install the right C-duct flexible synchronous cables and tubes.
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 240 and 210 lbf.in (2.71 and 2.37 m.daN )
No specific	Torque wrench: range to between 265 and 220 lbf.in (2.99 and 2.49 m.daN )
No specific	Torque wrench: range to between 679 and 619 lbf.in (7.67 and 6.99 m.daN )
No specific	Torque wrench: range to between 936 and 852 lbf.in (10.58 and 9.63 m.daN )
IAE1N20049	2	PIN - LOCKOUT ACTUATOR

B. Work Zones and Access Panels

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

C. Referenced Information

REFERENCE	DESIGNATION
TASK 12-12-29-611-001-A	Fill the Hydraulic Fluid Reservoir with a Hand Pump
TASK 12-12-29-611-002-A	Fill the Hydraulic Fluid Reservoir with a Hydraulic Service Cart
TASK 70-23-11-911-013-A	General Torque Tightening Techniques
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 78-30-00-820-010-A	Rigging of the Thrust Reverser System
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 78-31-00-710-041-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
Right Hydraulic Tubes
Hydraulic Cross Over Hoses
Flexshaft Tubes and Hoses
Locking Actuator

3. Job Set-up
Subtask 78-32-74-860-051-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 78-32-74-010-051-A ** ON A/C NOT FOR ALL

B. Make sure that the fan cowl doors are open: (Ref. AMM TASK 71-13-00-010-010)
(1) FOR [1000EM1] (ENGINE-1)
437AL 438AR
(2) FOR [1000EM2] (ENGINE-2)
447AL 448AR

Subtask 78-32-74-040-051-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 78-32-74-420-050-A ** ON A/C NOT FOR ALL

A. Install the crossover hydraulic hose (35).

Right Hydraulic Tubes ** ON A/C NOT FOR ALL

Hydraulic Cross Over Hoses ** ON A/C NOT FOR ALL

(1) Remove the caps from the ends of the crossover hydraulic hose (35), from the upper hydraulic port on the non-locking actuator (3), and from the tee fitting (34).
(2) Connect the hose nuts (33) to the non-locking actuator (3) and the tee fitting (34).
(3) Put the clamp assembly (37) in position over the crossover hydraulic hose (35), near the tee fitting (34), and install the two screws (36).
(4) TORQUE the hose nuts (33) to between 240 and 210 lbf.in (2.71 and 2.37 m.daN )

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

Subtask 78-32-74-420-051-A ** ON A/C NOT FOR ALL

B. Install the crossover flexshaft (42) and the crossover flexshaft/hose (31).

Right Hydraulic Tubes ** ON A/C NOT FOR ALL

Flexshaft Tubes and Hoses ** ON A/C NOT FOR ALL

Hydraulic Cross Over Hoses ** ON A/C NOT FOR ALL

CAUTION: DO NOT TURN THE FLEXSHAFT MORE THAN ONE-EIGHTH TURN WHILE ONE END IS STILL ENGAGED.

(1) Remove the caps from both ends of the crossover flexshaft/hose (31) and from the openings on the non-locking actuator (3) and the tee fitting (34).
(2) Put one end of the crossover flexshaft (42) through the belt clamp (32) in to the tee fitting (34).
(3) Push the crossover flexshaft (42) through the left crossover flexshaft/hose and in to the socket in the left non-locking actuator.
(4) Put the crossover flexshaft/hose (31) on to the crossover flexshaft (42).
(5) Make sure that both the left and the right non-locking actuators are in the fully stowed position.
(6) Put the crossover flexshaft (42) in to the socket of the right non-locking actuator (3).
(7) Connect the two hose nuts (20) to the tee fitting (34) and to the non-locking actuator (3).
(8) TORQUE the hose nut (20) at the non-locking actuator (3) to between 936 and 852 lbf.in (10.58 and 9.63 m.daN )

(Ref. AMM TASK 70-23-11-911-013).
(9) TORQUE the hose nut (20) at the tee fitting (3) to between 679 and 619 lbf.in (7.67 and 6.99 m.daN )

(Ref. AMM TASK 70-23-11-911-013).
(10) Install the two clamps (39), the screw (38), the washer (40) and the nut (41).

Subtask 78-32-74-420-052-A ** ON A/C NOT FOR ALL

C. Install the lower flexshaft/tube (2).

Right Hydraulic Tubes ** ON A/C NOT FOR ALL

Flexshaft Tubes and Hoses ** ON A/C NOT FOR ALL

CAUTION: DO NOT TURN THE FLEXSHAFT MORE THAN ONE-EIGHTH TURN WHILE ONE END IS ENGAGED.

(1) Remove the caps from both ends of the lower flexshaft/tube (2), from the lower flexshaft/tube port of the non-locking actuator (3), and from the lower flexshaft/tube port of the locking actuator (8).
(2) Install the lower flexshaft/tube (2) with the telescoping end fitting at the bottom.
(3) Connect the tube nut (20) to the non-locking actuator (3). Do not tighten the tube nut (20) at this step.
(4) Put the flexshaft (19) in to the bottom of the lower flexshaft/tube (2) and push it in to the socket of the non-locking actuator (3).
(5) Make sure that the non-locking and the locking actuators are in the fully stowed position.
(6) Pull the telescoping end fitting lower tube nut (20) up and insert the flexshaft (19) in to the socket of the locking actuator (8).
(7) Pull the telescoping end fitting tube nut down and engage the locknut (21).
(8) TORQUE the locknut (21) to between 265 and 220 lbf.in (2.99 and 2.49 m.daN )

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

NOTE: Hold the flats of the lower flexshaft/tube end while you torque the locknut.

(9) Connect the tube nut (20) to the locking actuator (8).
(10) TORQUE the two tube nuts (20) at both ends of the lower flexshaft/tube to between 936 and 852 lbf.in (10.58 and 9.63 m.daN )

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

Subtask 78-32-74-420-053-A ** ON A/C NOT FOR ALL

D. Install the lower hydraulic tube (1).

Right Hydraulic Tubes ** ON A/C NOT FOR ALL

(1) Remove the caps from both ends of the lower hydraulic tube (1), from the lower hydraulic port of the non-locking actuator (3), and from the upper hydraulic port of the locking actuator (8).
(2) Connect the upper tube nut of the lower hydraulic tube (1) to the non-locking actuator (3).
(3) Connect the lower tube nut of the lower hydraulic tube (1) to the locking actuator (8).
(4) TORQUE both tube nuts of the lower hydraulic tube (1) to between 240 and 210 lbf.in (2.71 and 2.37 m.daN )

(Ref. AMM TASK 70-23-11-911-013).
(5) In three places between the locking and non-locking actuators, install the screws (7), the washers (4) and the clamps (6) which attach the lower flexshaft/tube (2) and the lower hydraulic tube (1) to the brackets.

Subtask 78-32-74-820-050-A ** ON A/C NOT FOR ALL

E. Rig the thrust reverser actuators and flexshafts (Ref. AMM TASK 78-30-00-820-010)

Subtask 78-32-74-440-050-A ** ON A/C NOT FOR ALL

F. Activate the HCU (Ref. AMM TASK 78-30-00-440-012).

Subtask 78-32-74-870-050-A ** ON A/C NOT FOR ALL

G. Bleed the air from the thrust reverser hydraulic actuation system

Locking Actuator ** ON A/C NOT FOR ALL

CAUTION: MAKE SURE THAT ALL CAUGHT AIR IS BLED FROM THE SYSTEM. IF YOU DO NOT DO THIS, CAUGHT AIR CAN CAUSE UNSATISFACTORY OPERATION OF THE TRANSLATING SLEEVES. TEN CYCLES OF TRANSLATING SLEEVE POWER EXTENSION AND RETRACTION WILL REMOVE ALL CAUGHT AIR FROM THE SYSTEM.

CAUTION: YOU MUST MOVE THE LOCK LEVERS OF THE TWO LOCKING ACTUATORS AFT TO THE UNLOCKED POSITION BEFORE YOU BLEED THE SYSTEM. IF YOU DO NOT DO THIS, UNEVEN OPERATION OF THE TRANSLATING SLEEVES CAN CAUSE DAMAGE TO THE SYSTEM.

(1) Move the lock levers of the left and right locking actuators aft to the unlocked position and install the IAE1N20049 PIN - LOCKOUT ACTUATOR, to hold the lock levers in the unlocked position.
(2) Operate the system:

WARNING: MAKE SURE THAT THERE ARE NO PERSONS IN THE AREA AROUND THE THRUST REVERSER BEFORE YOU DO A POWER EXTENSION OR RETRACTION OF THE TRANSLATING SLEEVES. THE TRANSLATING SLEEVES EXTEND AND RETRACT IN 4.5 SECONDS OR LESS AND CAN CAUSE INJURY AND DAMAGE.

(a) Operate the system through ten cycles of translating sleeve power extension and retraction (Ref. AMM TASK 78-31-00-710-041).
(3) Remove the lockout pins and right locking actuators:

CAUTION: THE LOCKING ACTUATOR LOCK LEVERS MUST BE IN THE FORWARD LOCKED POSITION FOR FLIGHT OPERATION.

(a) Remove the lockout pins (IAE1N20049) from the lock levers of the left and right locking actuators and move the lock levers forward to the locked position.
(4) Refill the green hydraulic reservoir for engine 1 (yellow hydraulic reservoir for engine 2) (Ref. AMM TASK 12-12-29-611-001) or (Ref. AMM TASK 12-12-29-611-002).

5. Close-up
Subtask 78-32-74-410-050-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 fan cowls (Ref. AMM TASK 71-13-00-410-010):
(a) FOR [1000EM1] (ENGINE-1)
437AL 438AR
(b) FOR [1000EM2] (ENGINE-2)
447AL 448AR.
(3) Remove the WARNING NOTICE(S).

Subtask 78-32-74-790-050-A ** ON A/C NOT FOR ALL

B. Do a leak check of the right C-duct flexible synchronous cables and tubes. Leaks are not permitted.

Subtask 78-32-74-710-050-A ** ON A/C NOT FOR ALL

C. 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 03:29:26 UTC