Removal of the Left Thrust Reverser Half - Eng No. 1 [IAE]

TASK 78-32-01-000-010-A
Removal of the Left Thrust Reverser Half - Eng No. 1

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.

WARNING: BE CAREFUL DURING THE REMOVAL OR INSTALLATION OF THE THRUST REVERSER HALF. IT WEIGHS 567lb (257kg). IF IT FALLS, IT CAN CAUSE INJURY TO PERSONS AND/OR DAMAGE TO EQUIPMENT.

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.

CAUTION: DO NOT REMOVE/INSTALL THE THRUST REVERSER HALF IF THE WING LEADING EDGE SLATS ARE EXTENDED. THIS WILL CAUSE DAMAGE TO THE THRUST REVERSER, THE WING LEADING EDGE SLATS AND THE WING.

CAUTION: DO NOT USE THE TRANSLATING HOISTING POINT TO REMOVE THE THRUST REVERSER COWL.

CAUTION: WHEN YOU REMOVE/INSTALL THE THRUST REVERSER, BE CAREFUL NOT TO CAUSE DAMAGE TO THE PRESSURE BULKHEAD AND CROSSOVER BEAM TANGS.

CAUTION: THIS PART IS A REMOVABLE STRUCTURAL COMPONENT (RSC), WHICH CAN BE MOVED BETWEEN AIRCRAFT. THUS IT CAN HAVE DIFFERENT OPERATION CONDITIONS AND A DIFFERENT LIFE RECORD (FLIGHT HOURS/FLIGHT CYCLES/CALENDAR) FROM THE AIRCRAFT IT IS INSTALLED ON OR REMOVED FROM. THE OPERATOR IS RESPONSIBLE FOR THE SPECIFIC TRACKING AND CONTINUED AIRWORTHINESS OF REMOVABLE STRUCTURAL COMPONENTS. INCORRECT MAINTENANCE OF THESE COMPONENTS CAN CAUSE A RISK FOR THE FLIGHT SAFETY.

ZONE: 400
FIN: 3400KM1 ** ON A/C NOT FOR ALL

1. Reason for the Job
This TASK supplies the data for the removal of the left thrust reverser half.
2. Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment

REFERENCE	QTY	DESIGNATION
No specific	AR	CONTAINER 5 L (1.32 USGAL)
No specific	AR	COVER - BLANKING
No specific	AR	WARNING NOTICE(S)
745-0002-1GSE	1	THRUST REVERSER SLING
98D57003500000	1	PROTECTION-WING LEADING EDGE
IAE1N20002	1	SLING-FAN THRUST REVERSER
IAE1N20005	1	DOLLY-WORKSTAND THRUST REVERSER LEFT HAND
IAE1N20007	1	DOLLY-THRUST REVERSER

B. Work Zones and Access Panels

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

C. Referenced Information

REFERENCE	DESIGNATION
TASK 29-14-00-614-001-A	Depressurization of the Hydraulic Reservoirs
TASK 54-57-22-000-003-A	Removal of the Sections
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 78-32-00-010-010-A	Opening of the Thrust Reverser Halves
TASK 78-32-00-410-010-A	Closing of the Thrust Reverser Halves
Thrust Reverser Half and Sling
T/R Hydraulic Systems
Thrust Reverser Half Opening Actuator
Thrust Reverser Half Hinges
Thrust Reverser Dolly and Workstand

3. Job Set-up
Subtask 78-32-01-941-050-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 78-32-01-010-050-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.

Subtask 78-32-01-040-050-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 78-32-01-614-050-A ** ON A/C NOT FOR ALL

D. Depressurization of the Hydraulic Reservoirs
(1) For engine 1 depressurize the Green hydraulic reservoir (Ref. AMM TASK 29-14-00-614-001).
(2) For engine 2 depressurize the Yellow hydraulic reservoir (Ref. AMM TASK 29-14-00-614-001).

Subtask 78-32-01-010-051-A ** ON A/C NOT FOR ALL

E. Remove the profiles if the thrust reverser is deployed (Ref. AMM TASK 54-57-22-000-003).

Subtask 78-32-01-010-055-A ** ON A/C NOT FOR ALL

F. Remove the hinge access panel

Thrust Reverser Half and Sling ** ON A/C NOT FOR ALL

(1) Remove the 11 screws (5).
(2) Remove the hinge access panel (4) from the Thrust Reverser half (2).

Subtask 78-32-01-480-050-A ** ON A/C NOT FOR ALL

G. Attach the thrust reverser sling and install the slat protection mat .

CAUTION: THE SLAT PROTECTION MAT MUST BE PLACED OVER THE SLATS BETWEEN THE SLATS AND THE THRUST REVERSER SLING TO PREVENT DAMAGE TO THE SLATS.

(1) Remove the threaded fasteners from the upper center and lower aft point nutplates and remove the threaded fastener from the lower forward hoist point insert on the thrust reverser half (2). Do not discard them.

Thrust Reverser Half and Sling ** ON A/C NOT FOR ALL

(2) Remove the upper strap from IAE1N20002 SLING-FAN THRUST REVERSER or 745-0002-1GSE THRUST REVERSER SLING at the shackle.
(3) Attach the thrust reverser sling (3) to the lower-track fitting hoist-points.
(4) Position the 98D57003500000 PROTECTION-WING LEADING EDGE on the slats between the slats and the thrust reverser sling.
(5) Attach the sling to an applicable hoist.

Subtask 78-32-01-010-052-A ** ON A/C NOT FOR ALL

H. Open the thrust reverser halves (Ref. AMM TASK 78-32-00-010-010):
(1) FOR [1000EM1] (ENGINE-1)
451AL
(2) FOR [1000EM2] (ENGINE-2)
461AL.

4. Procedure
Subtask 78-32-01-020-051-A ** ON A/C NOT FOR ALL

A. Disconnect the Hydraulic Hoses:

CAUTION: HOLD THE ACTUATOR CONNECTORS WITH A WRENCH WHILE YOU LOOSEN THE HYDRAULIC CONNECTION TO PREVENT DAMAGE TO THE ACTUATOR.

(1) Disconnect the pylon wire harness electrical connector (1) from the receptacle at the top of the thrust reverser half (2).

Thrust Reverser Half and Sling ** ON A/C NOT FOR ALL

(2) Disconnect the hydraulic hoses from the non-locking actuator.

T/R Hydraulic Systems ** ON A/C NOT FOR ALL

(3) Put the CONTAINER 5 L (1.32 USGAL) in to position to catch the drained hydraulic fluid.
(4) Disconnect the extend hydraulic hose/flexshaft (15) from the non-locking actuator (16).
(5) Disconnect the retract hydraulic hose (17) from the thrust reverser non-locking actuator (16).
(6) Discard the drained hydraulic fluid.

Subtask 78-32-01-620-050-A ** ON A/C NOT FOR ALL

B. Put the applicable COVER - BLANKING on all of the openings.

Subtask 78-32-01-020-052-A ** ON A/C NOT FOR ALL

C. Disconnect the opening actuator

Thrust Reverser Half Opening Actuator ** ON A/C NOT FOR ALL

(1) Remove the nut (28), the bushing (27) and the bolt (30) which attach the opening actuator (29) to the pylon hinge beam.
(2) Push the opening actuator piston to the retracted position.

Subtask 78-32-01-410-050-A ** ON A/C NOT FOR ALL

D. Slowly lower the thrust reverser half with the thrust reverser sling and the hoist.
(1) Use the thrust reverser sling (3), IAE1N20002 SLING-FAN THRUST REVERSER or 745-0002-1GSE THRUST REVERSER SLING and hoist to support the thrust reverser half (2).
(2) Disengage the hold open rods (Ref. AMM TASK 78-32-00-410-010).
(3) Lower the thrust reverser sling (3) slowly and let the thrust reverser half (2) close.
(4) Install the upper strap from the thrust reverser sling (3) at the shackle.
(5) Attach the thrust reverser sling (3) to the upper hinge fitting hoist point.

CAUTION: BEFORE YOU REMOVE THE THRUST REVERSER, MAKE SURE THAT THE UPPER STRAP OF THE FAN-THRUST-REVERSER SLING IS INSTALLED ON THE THRUST REVERSER AND SLING SHACKLE. IF YOU DO NOT OBEY THIS INSTRUCTION, DAMAGE TO EQUIPMENT OR THE ENGINE CAN OCCUR.

(6) Use the thrust reverser sling and the hoist to open the thrust reverser half to approximately 12 IN. (304.8 MM) from the closed position.

Subtask 78-32-01-020-050-B ** ON A/C NOT FOR ALL

E. Removal of the Thrust Reverser Half

Thrust Reverser Half Hinges ** ON A/C NOT FOR ALL

SBN 78-0063: Modification of the thrust reverser No. 4 hinge installation hardware.
(1) Remove the nuts (44), washers (42) and the bolts (43) from the No. 1, 2 and 3 hinge positions.
(2) Remove the hardware from the thrust reverser half hinge at position 4 as follows:
(a) Remove the screw (50), washer (51), bracket (52), nut (53) and washer (54).
(b) Push the sleeve (41) aft to allow clearance before removing the bolt (57).
(c) Remove the bolt (57) and the second washer (54).
(d) Push the sleeve (41) forward and remove it from the thrust reverser half.
(3) Carefully move the thrust reverser half, away from the engine with the hoist and the IAE1N20002 SLING-FAN THRUST REVERSER (3).

Thrust Reverser Dolly and Workstand ** ON A/C NOT FOR ALL

Subtask 78-32-01-550-050-A ** ON A/C NOT FOR ALL

F. Put the thrust reverser half on the dolly

Thrust Reverser Dolly and Workstand ** ON A/C NOT FOR ALL

(1) Put the thrust reverser half (2) on the dolly (56) IAE1N20005 DOLLY-WORKSTAND THRUST REVERSER LEFT HAND or IAE1N20007 DOLLY-THRUST REVERSER.
(2) Attach the tie-down strap (55) to hold the thrust reverser half on the dolly.

Subtask 78-32-01-080-050-A ** ON A/C NOT FOR ALL

G. Remove the IAE1N20002 SLING-FAN THRUST REVERSER (3), from the thrust reverser half (2).

Thrust Reverser Half and Sling ** ON A/C NOT FOR ALL

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