Replacement of the Hinge Access Panel Seal/Retainer - Right Thrust Reverser - VRS2118 [IAE]

TASK 78-32-79-300-013-A
Replacement of the Hinge Access Panel Seal/Retainer - Right Thrust Reverser - VRS2118

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

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	ACCESS PLATFORM 2M (6 FT) - ADJUSTABLE
No specific	AR	MACHINE - DRILLING
No specific	AR	WARNING NOTICE(S)

B. Consumable Materials

REFERENCE	DESIGNATION
(Material No.V01-076)	Methyl Ethyl Ketone, Technical grade
(Material No.V06-131)	marking pen
(Material No.V08-032)	primer
(Material No.V08-043)	cold curing silicone compound
(Material No.14SBA1)	Textile-Lint free Cotton -

C. Work Zones and Access Panels

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

D. Referenced Information

REFERENCE	DESIGNATION
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 78-32-01-000-010-A	Removal of the Left Thrust Reverser Half - Eng No. 1
TASK 78-32-01-400-010-A	Installation of the Left Thrust Reverser Half - Eng No. 1
AIPC 78-32-79-88
Right Thrust Reverser Hinge Access Panel Seal/Retainer

3. Job Set-up
Subtask 78-32-79-941-054-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 78-32-79-010-058-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 78-32-79-040-054-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 78-32-79-010-059-A ** ON A/C NOT FOR ALL

D. Remove the hinge access panel (Ref. AMM TASK 78-32-01-000-010).

4. Procedure
Subtask 78-32-79-350-061-A ** ON A/C NOT FOR ALL

A. Remove the worn or damaged seal and/or retainer
AIPC 78-32-79-88
(1) Pull the seal (47) from the retainer (48).
(2) Drill out the rivets (49) and/or (50) with MACHINE - DRILLING and remove the retainer (48). Do not make the rivet holes larger.

Subtask 78-32-79-110-053-A ** ON A/C NOT FOR ALL

B. Clean the repair area
(1) Clean the repair area with a Textile-Lint free Cotton - (Material No.14SBA1) made moist with V01-076Methyl Ethyl Ketone, Technical grade.
(2) Wipe the surface dry before the cleaning fluid evaporates.

Subtask 78-32-79-350-062-A ** ON A/C NOT FOR ALL

C. Prepare the new retainer for installation
(1) Align the retainer (48) on the pressure bulkhead
(2) Use the MACHINE - DRILLING to backdrill the rivet holes to between 0.125 in. (3.18 mm) and 0.129 in. (3.28 mm).
(3) Remove the burrs from the drilled holes.

Subtask 78-32-79-350-063-A ** ON A/C NOT FOR ALL

D. Install the retainer and seal
AIPC 78-32-79-88
(1) Put the retainer (48) on the pressure bulkhead and wet install the rivet (49) and/or (50) with the primer (Material No.V08-032) . Wipe off all unwanted primer with a lint free cloth made moist with the V01-076Methyl Ethyl Ketone, Technical grade.
(2) Install the seal (47).
(a) Apply a coat of the cold curing silicone compound (Material No.V08-043) to the inside of the retainer (48).
(b) Insert the seal in to the retainer before the cold curing silicone compound cures. Trim all unwanted material from the retainer edge.
(c) Apply cold curing silicone compound (Material No.V08-043) cold curing silicone compound (Ref. 70-30-00) to the edges of the seal. Allow the cold curing silicone compound to cure for 30 minutes at room temperature.

Subtask 78-32-79-210-054-A ** ON A/C NOT FOR ALL

E. Visually examine the completed repair to make sure that the requirements of this repair procedure are done.

Subtask 78-32-79-350-064-A ** ON A/C NOT FOR ALL

F. Write VRS2118 adjacent to the assembly number on the C-duct to show that the repair has been done. Use a marking pen (Material No.V06-131) of a color which is different than the background.

5. Close-up
Subtask 78-32-79-410-058-A ** ON A/C NOT FOR ALL

A. Install the hinge access panel (Ref. AMM TASK 78-32-01-400-010).

Subtask 78-32-79-440-054-A ** ON A/C NOT FOR ALL

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

Subtask 78-32-79-410-059-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 access platform(s).
(3) Remove the WARNING NOTICE(S).

Subtask 78-32-79-710-057-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 03:29:48 UTC