Opening of the Thrust Reverser Halves [IAE]

TASK 78-32-00-010-010-A
Opening of the Thrust Reverser Halves

WARNING: DO THIS PROCEDURE CAREFULLY. IF YOU DO NOT, THE THRUST REVERSER HALF CAN CLOSE FAST AND CAUSE INJURY TO PERSONS BETWEEN THE THRUST REVERSER HALF AND THE ENGINE.

WARNING: BE CAREFUL WHEN YOU DO WORK ON THE ENGINE PARTS AFTER THE ENGINE SHUTDOWN. USE APPLICABLE THERMAL GLOVES. THE ENGINE PARTS CAN STAY HOT FOR ONE HOUR AFTER SHUTDOWN AND CAN BURN YOU.

WARNING: BE CAREFUL WHEN YOU USE CONSUMABLE MATERIALS. OBEY THE MATERIAL MANUFACTURER'S INSTRUCTIONS AND YOUR LOCAL REGULATIONS.

CAUTION: BEFORE AND AFTER YOU OPEN AND CLOSE THE THRUST REVERSER, MAKE SURE THAT THE LATCH 1 INDICATOR (RED FLAG) IS: - IN THE CORRECT POSITION - NOT CAUGHT BETWEEN THE TWO HALVES. IF YOU DO NOT OBEY THIS INSTRUCTION, DAMAGE TO THE EQUIPMENT CAN OCCUR.

CAUTION: DO NOT OPEN THE THRUST REVERSER DOORS IF THE WIND SPEED IS MORE THAN 40 KNOTS.

ZONE: 400
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 open the thrust reverser halves as doors to get access to the engine core compartment.
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	WARNING NOTICE(S)
IAE1N20009	1	PUMP HYDRAULIC UNIT-REVERSER C-DUCT

B. Consumable Materials

REFERENCE	DESIGNATION
(Material No.V10-077)	lubricant (engine oil)

C. Work Zones and Access Panels

ZONE/ACCESS	ZONE DESCRIPTION
400	POWER PLANT, NACELLES AND PYLONS
FOR [1000EM1] (ENGINE-1)
437AL, 438AR, 451AL, 452AR
FOR [1000EM2] (ENGINE-2)
447AL, 448AR, 461AL, 462AR

D. Referenced Information

REFERENCE	DESIGNATION
TASK 71-13-00-010-010-A	Opening of the Fan Cowls 437AL(447AL),438AR(448AR)
TASK 72-38-25-200-010-A	Detailed Inspection of Bifurcation Panel Fire Seal
TASK 78-30-00-040-012-A	Deactivation of the Thrust Reverser Hydraulic Control Unit (HCU) for Ground Maintenance
TASK 78-32-51-820-010-A	Adjustment of the Thrust Reverser Half Forward Hold-Open Rod
TASK 78-32-70-000-010-A	Removal of the Thrust Recovery Nozzle
TASK 78-32-80-000-010-A	Removal of the Thrust Reverser Pressure Relief Door (452DR, 462DR)
Thrust Reverser Auxiliary Latch Assembly
Thrust Reverser Half Latch Access
Thrust Reverser Half Latches
Manual Opening of the Thrust Reverser Half
Thrust-Reverser Half Hold-Open-Rods - Stowed
Thrust-Reverser Half Hold-Open-Rods - Deployed

3. Job Set-up
Subtask 78-32-00-941-050-A ** ON A/C NOT FOR ALL

A. Safety Precautions
(1) On the center pedestal, on 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 78-32-00-010-051-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 78-32-00-040-050-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 78-32-00-010-052-A ** ON A/C NOT FOR ALL

D. Open the thrust reverser pressure relief door 452DR(462DR) (3) and the thrust recovery nozzle (55) (Ref. AMM TASK 78-32-80-000-010) and (Ref. AMM TASK 78-32-70-000-010).

Subtask 78-32-00-820-050-A ** ON A/C NOT FOR ALL

E. Adjust the auxiliary latch assembly to its minimum length

Thrust Reverser Auxiliary Latch Assembly ** ON A/C NOT FOR ALL

Thrust Reverser Half Latch Access ** ON A/C NOT FOR ALL

CAUTION: DO NOT TURN THE BODY OF THE AUXILIARY LATCH ASSEMBLY TO MAKE IT SHORTER THAN ITS MINIMUM LENGTH. THE AUXILIARY LATCH ASSEMBLY CAN BE DAMAGED IF YOU TRY TO DECREASE ITS MINIMUM LENGTH.

(1) Remove the auxiliary latch assembly (2) from the retention clip (5).
(2) Turn the body of the auxiliary latch assembly (2) around the end fitting which is attached to the thrust reverser half.Turn it until the end fitting just touches the stop in the body.
(3) Hold the body so that it does not move and turn the other end fitting. Turn the fitting until it just touches the stop in the body.

NOTE: When both end fittings just touch the stops, this is the minimum length of the auxiliary latch assembly.

Subtask 78-32-00-480-050-A ** ON A/C NOT FOR ALL

F. Install the auxiliary latch assembly

Thrust Reverser Auxiliary Latch Assembly ** ON A/C NOT FOR ALL

CAUTION: DO NOT TURN THE BODY OF THE AUXILIARY LATCH ASSEMBLY TO MAKE IT SHORTER THAN ITS MINIMUM LENGTH. STOP TURNING THE BODY WHEN EITHER END FITTING TOUCHES THE STOP IN THE BODY. THE AUXILIARY LATCH ASSEMBLY CAN BE DAMAGED IF YOU TRY TO DECREASE ITS MINIMUM LENGTH.

(1) Hold the end fitting (which is not attached to the thrust reverser half) of the auxiliary latch assembly (2) so that it does not move.
(2) Turn the body of the auxiliary latch assembly (2) to make it longer. Increase the length until the end fitting can be attached to the hook (4) on the other thrust reverser half. Make sure that an equal amount of thread shows on each side of the body before you do step (3).
(3) Engage the auxiliary latch assembly (2) in the hook (4) on the other thrust reverser half.
(4) Turn the body of the auxiliary latch assembly (2) with a wrench to pull the two thrust reverser halves closer together. This relieves the tension on the thrust reverser latches.

4. Procedure
Subtask 78-32-00-010-053-A ** ON A/C NOT FOR ALL

A. Open the thrust reverser half latches

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

CAUTION: MAKE SURE THAT THE AUXILIARY LATCH ASSEMBLY DEVICE IS ENGAGED BEFORE YOU RELEASE THE LATCHES. FAILURE TO DO SO CAN CAUSE THE LATCHES TO OPEN FAST AND CAUSE INJURY TO PERSONS.

(1) Release the middle bifurcation latch (LATCH No.3) (13).
(2) Release the forward bifurcation latch (LATCH No.2) (1).
(3) Release the translating sleeve double latch (14).
(4) Release the aft bifurcation latch (LATCH No.4) (6).
(5) Release the V-groove latch (LATCH No.1) (7).

Subtask 78-32-00-080-050-A ** ON A/C NOT FOR ALL

B. Put the auxiliary latch assembly into its storage position

Thrust Reverser Auxiliary Latch Assembly ** ON A/C NOT FOR ALL

Thrust Reverser Half Latch Access ** ON A/C NOT FOR ALL

CAUTION: YOU MUST ADJUST THE AUXILIARY LATCH ASSEMBLY TO ITS MINIMUM LENGTH BEFORE YOU PUT IT IN TO THE RETENTION CLIP. IF YOU DO NOT DO THIS THE AUXILIARY LATCH ASSEMBLY CAN MOVE OUT OF ITS POSITION.

(1) Turn the body of the auxiliary latch assembly (2) to make it longer. Increase the length of the auxiliary latch assembly until the end fitting disengages from the hook (4) on the other thrust reverser half.
(2) Turn the body of the auxiliary latch assembly (2) around the end fitting which is attached to the thrust reverser half. Turn it until the end fitting just touches the stop in the body.
(3) Hold the body so that it does not move and turn the other end fitting. Turn the end fitting until it just touches the stop in the body.

NOTE: When both end fittings touch the stops this is the minimum length of the auxiliary latch assembly.

(4) Put the auxiliary latch assembly (2) into the retention clip (5).

Subtask 78-32-00-480-051-A ** ON A/C NOT FOR ALL

C. Attachment of the hydraulic hand pump

WARNING: DO NOT POSITION YOURSELF BETWEEN THE THRUST REVERSER HALF AND THE ENGINE UNTIL THE HOLD OPEN RODS ARE IN POSITION ON THE ENGINE.

(1) Attach the hydraulic hand pump, IAE1N20009 PUMP HYDRAULIC UNIT-REVERSER C-DUCT

Manual Opening of the Thrust Reverser Half ** ON A/C NOT FOR ALL

WARNING: DO NOT LET ENGINE OIL STAY ON YOUR SKIN FOR A LONG TIME. FLUSH THE OIL FROM YOUR SKIN WITH WATER. THE OIL IS POISONOUS AND CAN GO THROUGH YOUR SKIN AND INTO YOUR BODY.

(2) Attach the hose (26) of the hydraulic hand pump (25) to the opening actuator manifold connector (27) on the thrust reverser half (24).
(3) Make sure that the hand pump reservoir is filled with V10-077lubricant (engine oil).

Subtask 78-32-00-010-059-A ** ON A/C NOT FOR ALL

CAUTION: BEFORE YOU OPEN AND AFTER YOU CLOSE THE THRUST REVERSER, MAKE SURE THAT:

THERE IS NO FOREIGN OBJECT
THERE IS NO DAMAGE RELATED TO A FOREIGN OBJECT

AT THE HINGE ACCESS PANEL. IF YOU DO NOT OBEY THIS INSTRUCTION, DAMAGE TO THE EQUIPMENT CAN OCCUR.

CAUTION: DO NOT EXTEND THE THRUST REVERSER TRANSLATING SLEEVE WITH THE THRUST REVERSER HALVES FULLY OPEN. IF YOU DO NOT OBEY THIS INSTRUCTION, DAMAGE CAN OCCUR TO: - THE SYNCHRONIZING CABLES OF THE TRANSLATING SLEEVE - THE HINGE ACCESS PANELS OF THE THRUST REVERSER HALVES - THE PYLON PROFILES, AND - THE TRANSLATING SLEEVE.

CAUTION: IF YOU OPEN THE THRUST REVERSER HALVES AFTER YOU EXTENDED THE TRANSLATING SLEEVES, MAKE SURE THAT: - THE SLATS ARE RETRACTED, AND - YOU REMOVE THE PROFILES AND THE HINGE ACCESS PANELS. IF YOU DO NOT OBEY THIS INSTRUCTION, YOU CAN CAUSE DAMAGE TO THE EQUIPMENT.

D. Open the thrust reverser half:

Manual Opening of the Thrust Reverser Half ** ON A/C NOT FOR ALL

NOTE: Make sure the hinge access panel is properly seated on the upper track fairing and sufficient clearance between the hinge access panel and thrust reverser upper edge exists.

(1) FOR [1000EM1] (ENGINE-1)
451AL 452AR
(2) FOR [1000EM2] (ENGINE-2)
461AL 462AR
(3) Make sure that the hose (26) on the hydraulic hand pump (25) is correctly connected to the opening actuator manifold (27).
(4) Close the valve on the hand pump (25).
(5) Operate the hand pump (25) until the thrust reverser half is in the 35 deg (35.00 deg) position.

Subtask 78-32-00-481-050-A ** ON A/C NOT FOR ALL

E. Put the hold open rods in position to the hold the thrust reverser half

Thrust-Reverser Half Hold-Open-Rods - Stowed ** ON A/C NOT FOR ALL

(1) Put the aft hold-open rod (43) in position:
(a) Open the clip assembly (54) to release the hold open rod (43).

Thrust-Reverser Half Hold-Open-Rods - Deployed ** ON A/C NOT FOR ALL

(b) Push the lock arm (42) and fully extend the hold open rod (43).

Thrust-Reverser Half Hold-Open-Rods - Stowed ** ON A/C NOT FOR ALL

(c) Release the lock arm (42) and make sure the hold open rod (43) is locked in the fully extended position.
(d) Open the valve on the hydraulic hand pump (25) slowly. Let the thrust reverser half close until the hold open rod is hooked and properly engaged to the hold-open rod fitting.
(e) Close the hand pump valve.
(2) Put the forward hold-open rod (37) in position:
(a) Open the clip assembly (53) to release the hold open rod (37).

Thrust-Reverser Half Hold-Open-Rods - Deployed ** ON A/C NOT FOR ALL

(b) Hook the hold open rod to the hold-open rod fitting. Make sure the hold open rod fully engages on the fitting.

Thrust-Reverser Half Hold-Open-Rods - Stowed ** ON A/C NOT FOR ALL

NOTE: Adjustment of the forward hold-open rod should be necessary only during initial installation of the hold open rod, or if the adjustment has been disturbed.

(c) Open the valve on the hand pump (25) to let the thrust reverser half close slowly. Let the thrust reverser half close until the weight is taken on the two hold open rods (37) and (43).
(3) Make sure that the thrust reverser half is held correctly:
(a) Make sure the spring loaded couplers (39) and (41) on each rod is fully compressed.
(b) Make sure the weight of the thrust reverser half is held equally by the two hold open rods (37) and (43).
(c) If the weight of the thrust reverser half is not held equally by the two hold open rods (37) and (43), adjust the forward hold-open rod (37) (Ref. AMM TASK 78-32-51-820-010).

Subtask 78-32-00-080-051-A ** ON A/C NOT FOR ALL

F. Disconnect the hose (26) of the hydraulic hand pump (25) IAE1N20009 PUMP HYDRAULIC UNIT-REVERSER C-DUCT from the actuator manifold connector (27) of the thrust reverser half (24)

Manual Opening of the Thrust Reverser Half ** ON A/C NOT FOR ALL

Subtask 78-32-00-210-069-A ** ON A/C NOT FOR ALL

G. Examine the disconnect Panel rubber Fireseal (Ref. AMM TASK 72-38-25-200-010).

NOTE: This subtask is only applicable for engines that are Post SBE 79-0087 (V2500-A1) and Post SBE 79-0088 (V2500-A5).

[Rev.10 from 2021] 2026.04.01 03:52:00 UTC