Installation of the Fire Seal - Upper Track [IAE]

TASK 78-32-11-400-802-A
Installation of the Fire Seal - Upper Track

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

ZONE: 210
ZONE: 400
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	1	ABRASIVE PAPER - 240 GRIT (ANSI B74.18)
No specific	AR	ACCESS PLATFORM 2M (6 FT)
No specific	AR	WARNING NOTICE(S)

B. Consumable Materials

REFERENCE	DESIGNATION
(Material No.V01-124)	Isopropyl Alcohol, Technical grade
(Material No.V02-097)	lint free gloves
(Material No.V02-099)	lint free cloth
(Material No.V08-177)	sealant-primerless
(Material No.V08-178)	sealant (alternate with primer)
(Material No.V08-179)	sealant primer
(Material No.14SBA1)	Textile-Lint free Cotton -

C. Work Zones and Access Panels

ZONE/ACCESS	ZONE DESCRIPTION
210	CKPT,FWD COMPT BHD TO FLT COMPT BULKHEAD
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 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 78-32-00-010-010-A	Opening of the Thrust Reverser Halves
TASK 78-32-00-410-010-A	Closing of the Thrust Reverser Halves
Upper Track Fire Seal

3. Job Set-up
Subtask 78-32-11-941-062-A ** ON A/C NOT FOR ALL

A. Safety Precautions
(1) On the center pedestal, on ENG panel 115VU:
(a) Make sure that the WARNING NOTICE(S) in position to tell persons not to start the engine.
(2) Make sure that the engine 1(2) shutdown occurred not less than five 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) Make sure that the WARNING NOTICE(S) in position to tell persons not to energize the FADEC 1(2).

Subtask 78-32-11-010-077-A ** ON A/C NOT FOR ALL

B. Get Access
(1) Make sure that the fan cowl doors are open (Ref. AMM TASK 71-13-00-010-010):
(a) FOR [1000EM1] (ENGINE-1)
437AL 438AR
(b) FOR [1000EM2] (ENGINE-2)
447AL 448AR
(2) Make sure that the ACCESS PLATFORM 2M (6 FT) in position.

Subtask 78-32-11-040-065-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) Make sure that you did the deactivation of the thrust reverser Hydraulic Control Unit (HCU) (Ref. AMM TASK 78-30-00-040-012).

Subtask 78-32-11-010-078-A ** ON A/C NOT FOR ALL

D. Make sure that the thrust reverser halves are open (Ref. AMM TASK 78-32-00-010-010):
(1) FOR [1000EM1] (ENGINE-1)
451AL 452AR
(2) FOR [1000EM2] (ENGINE-2)
461AL 462AR

4. Procedure
Subtask 78-32-11-420-055-A ** ON A/C NOT FOR ALL

A. Installation of the Upper Track Fire Seal
(1) Clean the seal retainer.
(a) Lightly abrade the faying surface to remove the remaining sealant using ABRASIVE PAPER - 240 GRIT (ANSI B74.18).
(b) Wipe clean using a lint free cloth (Material No.V02-099) dampened with V01-124Isopropyl Alcohol, Technical grade.
(2) Prepare the new upper track fire seal.
(a) Scuff sand the faying surface using ABRASIVE PAPER - 240 GRIT (ANSI B74.18).
(b) Remove all sanding debris using a lint free cloth (Material No.V02-099) dampened with V01-124Isopropyl Alcohol, Technical grade, wipe dry using Textile-Lint free Cotton - (Material No.14SBA1) before the solvent evaporates.
(3) Application of primer if necessary depending on the sealant type used.
(a) Apply sealant primer (Material No.V08-179) to both faying surfaces (fire seal and seal retainer) immediately after cleaning. Handle parts with lint free gloves (Material No.V02-097) .
(b) Allow primer to dry at least 30 minutes prior to the sealant application.
(4) Apply of sealant.

CAUTION: DO NOT APPLY SEALANTS TO SURFACES WHEN THE TEMPERATURE IS BELOW 50°F (10°C).

(a) Bonding shall be within 4 hours after solvent cleaning or priming.
(b) Apply sealant-primerless (Material No.V08-177) or V08-178sealant (alternate with primer) to both faying surfaces (fire seal and seal retainer).
(c) Maintain bonding pressure as constant and as uniformly distributed over the area being bonded as practicable during cure.
(d) Cure as per Manufacturer's instructions.

5. Close-up
Subtask 78-32-11-410-072-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 thrust reverser halves (Ref. AMM TASK 78-32-00-410-010):
(a) FOR [1000EM1] (ENGINE-1)
451AL 452AR
(b) FOR [1000EM2] (ENGINE-2)
461AL 462AR

Subtask 78-32-11-440-058-A ** ON A/C NOT FOR ALL

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

Subtask 78-32-11-410-073-A ** ON A/C NOT FOR ALL

C. Close Access
(1) Close the fan cowl doors (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 WARNING NOTICE(S).
(3) Remove the access platform(s).

Subtask 78-32-11-710-054-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 03:28:13 UTC