W DOC AIRBUS | AMM A320F

Installation of the Right Thrust-Reverser Seals [PW11]

TASK 78-32-72-400-802-A
Installation of the Right Thrust-Reverser Seals

WARNING: BE CAREFUL WHEN YOU DO WORK ON THE ENGINE AND THE ADJACENT COMPONENTS AFTER ENGINE SHUTDOWN. THE ENGINE, THE ENGINE OIL AND THE ADJACENT COMPONENTS CAN STAY HOT FOR A LONG TIME. IF YOU DO NOT OBEY THIS INSTRUCTION, INJURY CAN OCCUR.
WARNING: WEAR APPLICABLE PERSONAL PROTECTIVE EQUIPMENT (PPE) WHEN YOU DO THIS TASK. BEFORE YOU USE PPE, READ, UNDERSTAND AND OBEY ALL INSTRUCTIONS FOR ITS USE. THESE INSTRUCTIONS INCLUDE INSTRUCTIONS FROM THE MANUFACTURER, YOUR EMPLOYER AND GOVERNMENT REGULATIONS. YOU CAN GET INJURED IF YOU DO NOT USE PPE. GET INSTRUCTIONS FROM YOUR EMPLOYER ON WHICH PPE IS NECESSARY.
WARNING: BE CAREFUL WHEN YOU USE CONSUMABLE MATERIALS. OBEY THE MATERIAL MANUFACTURER'S INSTRUCTIONS AND YOUR LOCAL REGULATIONS.
ZONE: 400
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
ACCESS PLATFORM 2M (6 FT) - ADJUSTABLE
No specific
AR
COVER - PROTECTION
No specific
1
LIGHT SOURCE - HEAT
No specific
Torque wrench: range to between 20 and 18 lbf.in (0.23 and 0.20 m.daN ) T
 B. Consumable Materials
REFERENCE
DESIGNATION
(Material No.PU1-0001)
lint-free cotton cloth
(Material No.PU1-0003)
abrasive paper, 220-Grit
(Material No.PU2-0001)
alcohol, isopropyl
(Material No.PU3-0002)
sealant
(Material No.PU3-0003)
sealant
(Material No.PU3-0015)
catalyst
 C. Work Zones and Access Panels
ZONE/ACCESS
ZONE DESCRIPTION
400
POWER PLANT, NACELLES AND PYLONS
FOR [4020KM1] (POWER PLANT-DEMOUNTABLE, ENG 1)
437AL, 438AR, 451AL, 452AR
FOR [4020KM2] (POWER PLANT-DEMOUNTABLE, ENG 2)
447AL, 448AR, 461AL, 462AR
 D. Referenced Information
REFERENCE
DESIGNATION
TASK 71-00-00-860-833-A
Procedure to Prevent Engine Motoring
TASK 71-13-00-010-802-A
Opening of the Fan Cowl Doors
TASK 71-13-00-410-802-A
Closing of the Fan Cowl Doors
TASK 78-30-00-040-805-A
Deactivation of the Thrust Reverser System for Ground Maintenance
TASK 78-30-00-440-805-A
Reactivation of the Thrust Reverser System after Ground Maintenance
TASK 78-32-00-860-802-A
Manual Extension of the Thrust-Reverser Translating Sleeves
TASK 78-32-00-860-803-A
Manual Retraction of the Thrust-Reverser Translating Sleeves
TASK 78-36-00-010-802-A
Opening of the Thrust Reverser Cowl-Doors
TASK 78-36-00-410-802-A
Closing of the Thrust Reverser Cowl-Doors
F Right Thrust-Reverser Fire-Seals
F Sealant between Seals
F Right Thrust Reverser Pressure Seals
F Right Thrust Reverser Vapor Barrier Seal
3. Job Set-up
Subtask 78-32-72-941-053-A ** ON A/C NOT FOR ALL
A. Safety Precautions
   (1) Make sure that you did the procedure to prevent engine motoring
(Ref. AMM TASK 71-00-00-860-833).
Subtask 78-32-72-010-057-A ** ON A/C NOT FOR ALL
B. Get Access
   (1) Make sure that the fan cowl doors are open (Ref. AMM TASK 71-13-00-010-802):
     (a) FOR [4020KM1] (POWER PLANT-DEMOUNTABLE, ENG 1)
437AL, 438AR
     (b) FOR [4020KM2] (POWER PLANT-DEMOUNTABLE, ENG 2)
447AL, 448AR
Subtask 78-32-72-040-053-A ** ON A/C NOT FOR ALL
C. Deactivation of the Thrust Reverser System for Ground Maintenance
WARNING: YOU MUST DEACTIVATE THE THRUST REVERSER BEFORE YOU DO WORK ON OR AROUND IT. IF YOU DO NOT, THE THRUST REVERSER CAN OPERATE ACCIDENTALLY AND CAUSE AN INJURY AND/OR DAMAGE.
   (1) Make sure that you did the deactivation of the thrust reverser system for ground maintenance (Ref. AMM TASK 78-30-00-040-805).
Subtask 78-32-72-010-059-A ** ON A/C NOT FOR ALL
D. Get Access
   (1) Make sure that the right thrust reverser cowl-doors is open (Ref. AMM TASK 78-36-00-010-802):
     (a) FOR [4020KM1] (POWER PLANT-DEMOUNTABLE, ENG 1)
452AR
     (b) FOR [4020KM2] (POWER PLANT-DEMOUNTABLE, ENG 2)
462AR
   (2) Make sure that the ACCESS PLATFORM 2M (6 FT) - ADJUSTABLE is in position.
4. Procedure
CAUTION: WIPE CLEAN ALL PARTS AND TOOLS AS NECESSARY TO REMOVE UNWANTED DEBRIS AND PREVENT DAMAGE TO THE ENGINE.
Subtask 78-32-72-420-051-A ** ON A/C NOT FOR ALL
A. Installation of the Inner-Fixed-Structure (IFS) Fire-Seals
F Right Thrust-Reverser Fire-Seals ** ON A/C NOT FOR ALL
   (1) Removal of the protection covers:
CAUTION: REMOVE THE PROTECTION COVERS FROM THE OPENINGS AS NECESSARY TO PREVENT ENGINE DAMAGE.
     (a) Make sure that you remove all the necessary COVER - PROTECTION to prevent damage to the engine.
   (2) Install the Active-Clearance-Control (ACC) inlet-fire-seal (8).
     (a) Clean the mating surfaces of the IFS and the ACC inlet fire-seal (8). Use PU2-0001alcohol, isopropyl on a clean lint-free cotton cloth (Material No.PU1-0001) to remove all loose soil, grease, hydraulic fluid or oil.
     (b) Remove the PU2-0001alcohol, isopropyl from the mating surfaces of the IFS and the ACC inlet fire-seal (8) with a clean lint-free cotton cloth (Material No.PU1-0001) before it dries.
     (c) Install the ACC inlet fire-seal (8) on the IFS with the six bolts (9) and the six washers (10).
     (d) Tighten the bolts (9) to initial contact, plus an additional 1/3 turn.
   (3) Install the firewall fire seal (7).
     (a) Clean the mating surfaces of the applicable firewall, the seal retainer and the firewall fire seal (7). Use PU2-0001alcohol, isopropyl on a clean lint-free cotton cloth (Material No.PU1-0001) to remove all loose soil, grease, hydraulic fluid or oil.
     (b) Remove the PU2-0001alcohol, isopropyl from the mating surfaces of the applicable firewall, the seal retainer and the firewall fire seal (7) with a clean lint-free cotton cloth (Material No.PU1-0001) before it dries.
     (c) Lightly rub the mating surface of the applicable firewall where you will apply the sealant (Material No.PU3-0002) with PU1-0003abrasive paper, 220-Grit. See the view G of the figure.
F Right Thrust-Reverser Fire-Seals ** ON A/C NOT FOR ALL
     (d) Clean the mating surface of the applicable firewall with PU2-0001alcohol, isopropyl on a clean lint-free cotton cloth (Material No.PU1-0001) to remove unwanted material.
     (e) Remove the PU2-0001alcohol, isopropyl from the mating surface of the applicable firewall with a clean lint-free cotton cloth (Material No.PU1-0001) before it dries.
     (f) Apply sealant.
CAUTION: MAKE SURE THAT NO SEALANT STAYS ON THE EXTERNAL SURFACE. REMOVE IT FROM THE EXTERNAL SURFACE WITH A CLEAN CLOTH BEFORE IT DRIES. IF YOU DO NOT OBEY THIS INSTRUCTION, DAMAGE TO THE SURFACE CAN OCCUR.
       1 Apply a layer of sealant (Material No.PU3-0002) to the mating surfaces of the applicable firewall and the firewall fire seal (7) to fill holes and gaps. Refer to the manufacturer's instructions. See the view G of the figure.
F Right Thrust-Reverser Fire-Seals ** ON A/C NOT FOR ALL
     (g) Installation of the firewall fire seal in the seal retainer:
CAUTION: MAKE SURE THAT THE SEAL IS CENTERED IN THE RETAINER. IF THE SEAL IS NOT CENTERED, IT IS POSSIBLE THAT IT WILL NOT MAKE A COMPLETE SEAL AND THE FIREWALL WILL NOT OPERATE CORRECTLY. THIS CAN CAUSE DAMAGE TO THE EQUIPMENT.
CAUTION: WHEN YOU INSTALL THE FIREWALL FIRE SEAL IN THE SEAL RETAINER, BE CAREFUL NOT TO CAUSE DAMAGE TO THE FIRE SEAL.
       1 Put the firewall fire seal (7) in the seal retainer so that it is centered in the seal retainer.
       2 Measure the distance between the retainer edge and the upper end of the firewall fire seal (7).
       3 Then, measure the distance between the retainer edge and the lower end of the firewall fire seal (7).
       4 Make sure that you measure the forward side of the firewall fire seal (7).
       5 Make sure that the difference between the upper and lower measurements is 0.070 in. (1.78 mm) or less.
       6 Make sure you correctly install all of the edges of the firewall fire seal (7) on the seal retainer.
       7 Make sure that the foot of the firewall fire seal (7) is fully installed in the seal retainer. See the section A-A of the figure.
F Right Thrust-Reverser Fire-Seals ** ON A/C NOT FOR ALL
     (h) You must let the sealant (Material No.PU3-0002) cure for at least six hours before you put the aircraft into operation. Refer to the manufacturer's instructions.
NOTE: After six hours, the sealant (Material No.PU3-0002) will be in the tack-free condition.
   (4) Install the intermediate case (IMC) fire-seal (5).
     (a) Clean the mating surfaces of the applicable seal retainers and the IMC fire seal (5). Use PU2-0001alcohol, isopropyl on a clean lint-free cotton cloth (Material No.PU1-0001) to remove all loose soil, grease, hydraulic fluid or oil.
     (b) Remove the PU2-0001alcohol, isopropyl from the applicable seal retainers and the IMC fire seal (5) with a clean lint-free cotton cloth (Material No.PU1-0001) before it dries.
     (c) Install the IMC fire seal (5) in the applicable seal retainers.
NOTE: Make sure that you install the seal with the pressurization holes facing forward towards the engine inlet.
       1 Put the IMC fire seal (5) in the seal retainers. Visually examine the IMC fire seal (5) to make sure that it fully engages the retainers.
       2 Start at the top or the bottom of the IMC fire seal (5) and compress it fully until it touches the internal seal bumper. Do this at 6 in. (152 mm) to 8 in. (203 mm) intervals. See Section C-C.
F Right Thrust-Reverser Fire-Seals ** ON A/C NOT FOR ALL
       3 Do step 4.A.(4)(c)2_ a minimum of three times.
   (5) Install the lower IMC fire-seal (6).
     (a) Lightly rub the extension of the lower IMC fire-seal (6) with PU1-0003abrasive paper, 220-Grit.
     (b) Clean the extension of the lower IMC fire-seal (6) with PU2-0001alcohol, isopropyl on a clean lint-free cotton cloth (Material No.PU1-0001) to remove the unwanted material.
     (c) Remove the PU2-0001alcohol, isopropyl from the lower IMC fire-seal (6) with a clean lint-free cotton cloth (Material No.PU1-0001) before it dries.
     (d) If necessary, cut the end of the IMC fire seal (5) to attach along the extension of the lower IMC fire-seal (6).
     (e) Make sure that the clearance between the IMC fire seal (5) and the adjacent lower IMC fire-seal (6) is 0.060 in. (1.52 mm) or less.
     (f) Clean the mating surfaces of the IFS, the forward-bifurcation seal depressor and the lower IMC fire-seal (6). Use PU2-0001alcohol, isopropyl on a clean lint-free cotton cloth (Material No.PU1-0001) to remove all loose soil, grease, hydraulic fluid or oil.
     (g) Remove the PU2-0001alcohol, isopropyl from the mating surfaces of the IFS, the forward-bifurcation seal depressor and the lower IMC fire-seal (6) with a clean lint-free cotton cloth (Material No.PU1-0001) before it dries.
     (h) Lightly rub the mating surface of the IFS where you will apply the sealant (Material No.PU3-0002) with PU1-0003abrasive paper, 220-Grit. See the view F of the figure.
F Right Thrust-Reverser Fire-Seals ** ON A/C NOT FOR ALL
     (i) Clean the mating surface of the IFS and the forward-bifurcation seal depressor with PU2-0001alcohol, isopropyl on a clean lint-free cotton cloth (Material No.PU1-0001) to remove unwanted material.
     (j) Remove the PU2-0001alcohol, isopropyl from the mating surface of the IFS and the forward-bifurcation seal depressor with a clean lint-free cotton cloth (Material No.PU1-0001) before it dries.
     (k) Apply sealant.
CAUTION: MAKE SURE THAT NO SEALANT STAYS ON THE EXTERNAL SURFACE. REMOVE IT FROM THE EXTERNAL SURFACE WITH A CLEAN CLOTH BEFORE IT DRIES. IF YOU DO NOT OBEY THIS INSTRUCTION, DAMAGE TO THE SURFACE CAN OCCUR.
       1 Mix the sealant (Material No.PU3-0003) and catalyst (Material No.PU3-0015) Refer to the manufacturer's instructions.
       2 Apply a layer of sealant (Material No.PU3-0003) mixture to the mating surfaces of the IMC fire seal (5) and the adjacent lower IMC fire-seal (6). Refer to the manufacturer's instructions.
       3 Apply the sealant (Material No.PU3-0003) mixture to the extension of the seal. Also apply the sealant (Material No.PU3-0003) mixture to the inner surface of the end of the other seal. Make sure the layers are between 0.01 in. (0.254 mm) and 0.02 in. (0.508 mm) thick.
F Sealant between Seals ** ON A/C NOT FOR ALL
       4 Apply a layer of sealant (Material No.PU3-0002) to the mating surfaces of the IFS and the lower IMC fire-seal (6) to fill holes and gaps. Refer to the manufacturer's instructions. See the view F of the figure.
F Right Thrust Reverser Pressure Seals ** ON A/C NOT FOR ALL
NOTE: Make sure that you do not apply too much sealant between the lower IMC fire-seal (6) and the IFS. Too much sealant can cause the top corner of the lower IMC fire-seal (6) tilt and not align with the IMC fire seal (5). See Section B-B.
F Right Thrust-Reverser Fire-Seals ** ON A/C NOT FOR ALL
     (l) Install the lower IMC fire seal (6) to the IFS.
     (m) Put the extension of the lower IMC fire-seal (6) into the end of the IMC fire seal (5).
NOTE: Make sure the flat surface of the lower IMC fire-seal (6) is between 0.340 in. (8.64 mm) - 0.420 in. (10.67 mm) from the edge of the IFS bond panel.
NOTE: Make sure that the top surfaces of the IMC fire seal (5) and lower IMC fire-seal (6) align with the seal depressor on the engine. Make sure that the top corner of the lower IMC fire-seal (6) is not above or below the top surface of the IMC fire seal (5). See Section B-B.
F Right Thrust-Reverser Fire-Seals ** ON A/C NOT FOR ALL
     (n) Clean unwanted sealant (Material No.PU3-0003) from the fire seals (5) and (6) and the adjacent surfaces with a lint-free cotton cloth (Material No.PU1-0001) before the sealant dries.
       1 Make the sealant (Material No.PU3-0003) flush with the surfaces of the adjacent seals.
     (o) You must let the sealant (Material No.PU3-0003) fully cure before you put the aircraft into operation. Refer to the manufacturer's instructions.
NOTE: To make the curing process faster, increase the temperature of the sealant (Material No.PU3-0003) between 140 DEG.F (60.00 DEG.C) and 150 DEG.F (65.56 DEG.C) for at least four hours. Make sure the relative humidity is 20 percent or greater during this time. Use the LIGHT SOURCE - HEAT or equivalent as the heat source.
     (p) You must let the sealant (Material No.PU3-0002) cure for at least six hours before you put the aircraft into operation. Refer to the manufacturer's instructions.
NOTE: After six hours, the sealant (Material No.PU3-0002) will be in the tack-free condition.
   (6) Install the upper IMC fire-seal (2).
     (a) Clean the mating surfaces of the applicable seal retainers and the upper IMC fire-seal (2). Use PU2-0001alcohol, isopropyl on a clean lint-free cotton cloth (Material No.PU1-0001) to remove all loose soil, grease, hydraulic fluid or oil.
     (b) Remove the PU2-0001alcohol, isopropyl from the applicable seal retainers and the upper IMC fire-seal (2) with a clean lint-free cotton cloth (Material No.PU1-0001) before it dries.
     (c) Lightly rub the extension of the upper IMC fire-seal (2) with PU1-0003abrasive paper, 220-Grit.
     (d) Clean the upper IMC fire-seal (2) with PU2-0001alcohol, isopropyl on a clean lint-free cotton cloth (Material No.PU1-0001) to remove the unwanted material.
     (e) Remove the PU2-0001alcohol, isopropyl from the upper IMC fire-seal (2) with a clean lint-free cotton cloth (Material No.PU1-0001) before it dries.
     (f) Make sure that the clearance between the upper IMC fire-seal (2) and the adjacent IMC fire-seal (5) is 0.060 in. (1.52 mm) or less.
     (g) If necessary, cut the end of the IMC fire seal (5) to attach it along the extension of the upper IMC fire-seal (2).
     (h) Apply sealant.
CAUTION: MAKE SURE THAT NO SEALANT STAYS ON THE EXTERNAL SURFACE. REMOVE IT FROM THE EXTERNAL SURFACE WITH A CLEAN CLOTH BEFORE IT DRIES. IF YOU DO NOT OBEY THIS INSTRUCTION, DAMAGE TO THE SURFACE CAN OCCUR.
       1 Apply a thin brush layer of sealant (Material No.PU3-0003) mixture to the mating surfaces of the upper IMC fire-seal (2) and the adjacent IMC fire-seal (5). Refer to the manufacturer's instructions.
     (i) Apply the sealant (Material No.PU3-0003) mixture to the extension of the seal. Also apply the sealant (Material No.PU3-0003) mixture to the inner surface of the end of the other seal. Make sure the layers are between 0.01 in. (0.254 mm) and 0.02 in. (0.508 mm) thick.
     (j) Install the upper IMC fire-seal (2) in the applicable seal retainers with the pin (3) and nut (4).
     (k) TORQUE the nut (4) to between 20 and 18 lbf.in (0.23 and 0.20 m.daN ) T.
     (l) Put the extension of the IMC fire seal (2) into the end of the IMC fire seal (5).
     (m) Clean unwanted sealant (Material No.PU3-0003) from the fire seals (2) and (5) and the adjacent surfaces with a lint-free cotton cloth (Material No.PU1-0001) before the sealant dries.
       1 Make the sealant (Material No.PU3-0003) flush with the surfaces of the adjacent seals.
     (n) You must let the sealant (Material No.PU3-0003) fully cure before you put the aircraft into operation. Refer to manufacturer's instructions.
NOTE: To make the curing process faster, increase the temperature of the sealant (Material No.PU3-0003) between 140 DEG.F (60.00 DEG.C) and 150 DEG.F (65.56 DEG.C) for at least four hours. Make sure the relative humidity is 20 percent or greater during this time. Use the LIGHT SOURCE - HEAT or equivalent as heat source.
   (7) Install the upper bifurcation fire-seal (1).
     (a) Clean the mating surfaces of the applicable seal retainers, the IFS and the upper bifurcation fire-seal (1). Use PU2-0001alcohol, isopropyl on a clean lint-free cotton cloth (Material No.PU1-0001) to remove all loose soil, grease, hydraulic fluid or oil.
     (b) Remove the PU2-0001alcohol, isopropyl from the mating surfaces of the applicable seal retainers, the IFS and the upper bifurcation fire-seal (1) with a clean lint-free cotton cloth (Material No.PU1-0001) before it dries.
     (c) Lightly rub the extension of the upper IMC fire-seal (2) with PU1-0003abrasive paper, 220-Grit.
     (d) Clean the extension of the upper IMC fire-seal (2) with PU2-0001alcohol, isopropyl on a clean lint-free cotton cloth (Material No.PU1-0001) to remove the unwanted material.
     (e) Remove the PU2-0001alcohol, isopropyl from the upper IMC fire-seal (2) with a clean lint-free cotton cloth (Material No.PU1-0001) before it dries.
     (f) If necessary, cut the end of the upper bifurcation fire-seal (1) to attach along the extension of the upper IMC fire-seal (2).
     (g) Make sure that the clearance between the upper bifurcation fire-seal (1) and the adjacent upper IMC fire-seal (2) is 0.060 in. (1.52 mm) or less.
     (h) Apply sealant.
CAUTION: MAKE SURE THAT NO SEALANT STAYS ON THE EXTERNAL SURFACE. REMOVE IT FROM THE EXTERNAL SURFACE WITH A CLEAN CLOTH BEFORE IT DRIES. IF YOU DO NOT OBEY THIS INSTRUCTION, DAMAGE TO THE SURFACE CAN OCCUR.
       1 Apply the sealant (Material No.PU3-0003) mixture to the mating surfaces of the upper bifurcation fire-seal (1) and the adjacent upper IMC fire-seal (2). Refer to the manufacturer's instructions.
     (i) Install the upper bifurcation fire-seal (1) in the applicable seal retainers and to the IFS.
     (j) Put the extension of the upper IMC fire-seal (2) into the end of the upper bifurcation fire-seal (1).
     (k) Clean unwanted sealant (Material No.PU3-0003) from the fire seals (1) and (2) and the adjacent surfaces with a lint-free cotton cloth (Material No.PU1-0001) before the sealant dries.
       1 Make the sealant (Material No.PU3-0003) flush with the surfaces of the adjacent seals.
     (l) You must let the sealant (Material No.PU3-0003) fully cure before you put the aircraft into operation. Refer to manufacturer's instructions.
NOTE: To make the curing process faster, increase the temperature of the sealant (Material No.PU3-0003) between 140 DEG.F (60.00 DEG.C) and 150 DEG.F (65.56 DEG.C) for at least four hours. Make sure the relative humidity is 20 percent or greater during this time. Use the LIGHT SOURCE - HEAT or equivalent as the heat source.
Subtask 78-32-72-420-052-A ** ON A/C NOT FOR ALL
B. Installation of the IFS Pressure Seals
F Right Thrust Reverser Pressure Seals ** ON A/C NOT FOR ALL
   (1) Install the core cowl seal (29).
     (a) Clean the mating surfaces of the blanket retainer, the IFS and the core cowl seal (29). Use PU2-0001alcohol, isopropyl on a clean lint-free cotton cloth (Material No.PU1-0001) to remove all loose soil, grease, hydraulic fluid or oil.
     (b) Remove the PU2-0001alcohol, isopropyl from the mating surfaces of the blanket retainer, the IFS and the core cowl seal (29) with a clean lint-free cotton cloth (Material No.PU1-0001) before it dries.
     (c) Install the core cowl seal (29) on the IFS.
   (2) Install the gearbox breather seal (30).
     (a) Clean the mating surfaces of the seal retainer and the gearbox breather seal (30). Use PU2-0001alcohol, isopropyl on a clean lint-free cotton cloth (Material No.PU1-0001) to remove all loose soil, grease, hydraulic fluid or oil.
     (b) Remove the PU2-0001alcohol, isopropyl from the seal retainer and the gearbox breather seal (30) with a clean lint-free cotton cloth (Material No.PU1-0001) before it dries.
     (c) Install the gearbox breather seal (30) in the seal retainer.
   (3) Install the drain mast seal (28).
     (a) Clean the mating surfaces of the seal retainer, the drain-mast seal support and the drain mast seal (28). Use PU2-0001alcohol, isopropyl on a clean lint-free cotton cloth (Material No.PU1-0001) to remove all loose soil, grease, hydraulic fluid or oil.
     (b) Remove the PU2-0001alcohol, isopropyl from the mating surfaces of the seal retainer, the drain-mast seal support and the drain mast seal (28) with a clean lint-free cotton cloth (Material No.PU1-0001) before it dries.
     (c) Install the drain mast seal (28) in the seal retainer.
   (4) Install the latch-beam-fan case seal (27).
     (a) Clean the mating surfaces of the IFS and the latch-beam-fan case seal (27). Use PU2-0001alcohol, isopropyl on a clean lint-free cotton cloth (Material No.PU1-0001) to remove all loose soil, grease, hydraulic fluid or oil.
     (b) Remove the PU2-0001alcohol, isopropyl from the mating surfaces of the IFS and the latch-beam-fan case seal (27) with a clean lint-free cotton cloth (Material No.PU1-0001) before it dries.
     (c) Install the latch-beam-fan case seal (27) on the IFS with the four nuts (26).
     (d) TORQUE the nuts (26) to between 20 and 18 lbf.in (0.23 and 0.20 m.daN ) T.
   (5) Install the forward hinge-beam seal (21).
     (a) Clean the mating surfaces of the seal retainer support, the retainer support, the inner fixed structure and the forward hinge beam seal (21). Use PU2-0001alcohol, isopropyl on a clean lint-free cotton cloth (Material No.PU1-0001) to remove all loose soil, grease, hydraulic fluid or oil.
     (b) Remove the PU2-0001alcohol, isopropyl from the mating surfaces of the seal retainer support, the retainer support, the IFS and the forward hinge-beam seal (21) with a clean lint-free cotton cloth (Material No.PU1-0001) before it dries.
     (c) Lightly rub the mating surfaces of the seal retainer support, the retainer support and the IFS where you will apply the sealant (Material No.PU3-0002) with PU1-0003abrasive paper, 220-Grit. See the view K of the figure.
F Right Thrust Reverser Pressure Seals ** ON A/C NOT FOR ALL
     (d) Clean the mating surfaces of the seal retainer support, the retainer support and the IFS with PU2-0001alcohol, isopropyl on a clean lint-free cotton cloth (Material No.PU1-0001) to remove the unwanted material.
     (e) Remove the PU2-0001alcohol, isopropyl from the mating surfaces of the seal retainer support, the retainer support and the IFS with a clean lint-free cotton cloth (Material No.PU1-0001) before it dries.
     (f) Apply sealant.
CAUTION: MAKE SURE THAT NO SEALANT STAYS ON THE EXTERNAL SURFACE. REMOVE IT FROM THE EXTERNAL SURFACE WITH A CLEAN CLOTH BEFORE IT DRIES. IF YOU DO NOT OBEY THIS INSTRUCTION, DAMAGE TO THE SURFACE CAN OCCUR.
       1 Apply a layer of sealant (Material No.PU3-0002) to the mating surfaces of the seal retainer support, the retainer support, the IFS and the forward hinge-beam seal (21) to fill holes and gaps. Refer to the manufacturer's instructions. See view K of the figure.
F Right Thrust Reverser Pressure Seals ** ON A/C NOT FOR ALL
     (g) Install the forward hinge-beam seal (21) to the seal retainer support with the two bolts (22) and two nuts (25).
     (h) TORQUE the nuts (25) to between 20 and 18 lbf.in (0.23 and 0.20 m.daN ) T.
     (i) Install the forward hinge-beam seal (21) on the inner fixed structure with the nut (25).
     (j) TORQUE the nut (25) to between 20 and 18 lbf.in (0.23 and 0.20 m.daN ) T.
     (k) You must let the sealant (Material No.PU3-0002) cure for at least six hours before you put the aircraft into operation. Refer to the manufacturer's instructions.
NOTE: After six hours, the sealant (Material No.PU3-0002) will be in the tack-free condition.
   (6) Install the forward outboard hinge beam seal (24).
     (a) Clean the mating surfaces of the IFS and the forward outboard hinge-beam-seal (24). Use PU2-0001alcohol, isopropyl on a clean lint-free cotton cloth (Material No.PU1-0001) to remove all loose soil, grease, hydraulic fluid or oil.
     (b) Remove the PU2-0001alcohol, isopropyl from the mating surfaces of the IFS and the forward outboard hinge-beam-seal (24) with a clean lint-free cotton cloth (Material No.PU1-0001) before it dries.
     (c) Lightly rub the extension of the forward outboard hinge-beam-seal (24) with PU1-0003abrasive paper, 220-Grit.
     (d) Clean the forward outboard hinge-beam-seal (24) with PU2-0001alcohol, isopropyl on a clean lint-free cotton cloth (Material No.PU1-0001) to remove the unwanted material.
     (e) Remove the PU2-0001alcohol, isopropyl from the forward outboard hinge-beam-seal (24) with a clean lint-free cotton cloth (Material No.PU1-0001) before it dries.
     (f) If necessary, cut the end of the forward hinge-beam-seal (21) to attach it along the extension of the forward outboard hinge-beam-seal (24).
     (g) Make sure that the clearance between the forward outboard hinge-beam-seal (24) and the adjacent forward hinge-beam-seal (21) is 0.060 in. (1.52 mm) or less.
     (h) Apply sealant
CAUTION: MAKE SURE THAT NO SEALANT STAYS ON THE EXTERNAL SURFACE. REMOVE IT FROM THE EXTERNAL SURFACE WITH A CLEAN CLOTH BEFORE IT DRIES. IF YOU DO NOT OBEY THIS INSTRUCTION, DAMAGE TO THE SURFACE CAN OCCUR.
       1 Apply a thin brush layer of sealant (Material No.PU3-0003) mixture to the mating surfaces of the forward outboard hinge-beam-seal (24) and the adjacent forward hinge-beam-seal (21). Refer to the manufacturer's instructions.
     (i) Install the forward outboard hinge-beam-seal (24) and the adjacent forward hinge-beam-seal (21) on the IFS with the two bolts (23).
     (j) TORQUE the bolts (23) to between 20 and 18 lbf.in (0.23 and 0.20 m.daN ) T.
     (k) Put the extension of the forward outboard hinge-beam-seal (24) into the end of the forward hinge-beam seal (21).
     (l) Clean unwanted sealant (Material No.PU3-0003) from the fire seals (7) and (8) and the adjacent surfaces with a lint-free cotton cloth (Material No.PU1-0001) before the sealant dries.
       1 Make the sealant (Material No.PU3-0003) flush with the surfaces of the adjacent seals.
     (m) You must let sealant (Material No.PU3-0003) the fully cure before you put the pressure seals into operation. Refer to the manufacturer's instructions.
NOTE: To make the curing process faster, increase the temperature of the sealant (Material No.PU3-0003) between 140 DEG.F (60.00 DEG.C) and 150 DEG.F (65.56 DEG.C) for at least four hours. Make sure the relative humidity is 20 percent or greater during this time. Use the LIGHT SOURCE - HEAT or equivalent as the heat source.
   (7) Install the hinge beam seal (18).
     (a) Clean the mating surfaces of the seal retainer, the seal retainer support, the IFS and the hinge beam seal (18). Use PU2-0001alcohol, isopropyl on a clean lint-free cotton cloth (Material No.PU1-0001) to remove all loose soil, grease, hydraulic fluid or oil.
     (b) Remove the PU2-0001alcohol, isopropyl from the mating surfaces of the seal retainer, the seal retainer support, the IFS and the hinge beam seal (18) with a clean lint-free cotton cloth (Material No.PU1-0001) before it dries.
     (c) Lightly rub the extension of the forward hinge-beam seal (21) with PU1-0003abrasive paper, 220-Grit.
     (d) Clean the extension of the forward hinge-beam seal (21) with PU2-0001alcohol, isopropyl on a clean lint-free cotton cloth (Material No.PU1-0001) to remove the unwanted material.
     (e) Remove the PU2-0001alcohol, isopropyl from the forward hinge-beam seal (21) with a clean lint-free cotton cloth (Material No.PU1-0001) before it dries.
     (f) If necessary, cut the end of the hinge beam seal (18) to attach it along the extension of the forward hinge-beam seal (21).
     (g) Make sure that the clearance between the hinge beam seal (18) and the adjacent forward hinge-beam-seal (21) is 0.060 in. (1.52 mm) or less.
     (h) Lightly rub the mating surfaces of the seal retainer support and the IFS where you will apply the sealant (Material No.PU3-0002) with PU1-0003abrasive paper, 220-Grit. See the view K of the figure.
F Right Thrust Reverser Pressure Seals ** ON A/C NOT FOR ALL
     (i) Clean the mating surfaces of the seal retainer support and the IFS with PU2-0001alcohol, isopropyl on a clean lint-free cotton cloth (Material No.PU1-0001) to remove the unwanted material.
     (j) Remove the PU2-0001alcohol, isopropyl from the mating surfaces of the seal retainer support and the IFS with a clean lint-free cotton cloth (Material No.PU1-0001) before it dries.
     (k) Apply a layer of sealant (Material No.PU3-0003) mixture to the mating surfaces of the hinge beam seal (18) and the adjacent forward hinge-beam-seal (21). Refer to the manufacturer's instructions.
     (l) Apply the sealant (Material No.PU3-0003) mixture to the extension of the seal. Also apply the sealant (Material No.PU3-0003) mixture to the inner surface of the end of the other seal. Make sure the layers are between 0.01 in. (0.254 mm) and 0.02 in. (0.508 mm) thick.
F Sealant between Seals ** ON A/C NOT FOR ALL
     (m) Apply a layer of sealant (Material No.PU3-0002) to the mating surfaces of the hinge beam seal (18), the seal retainer support and the IFS to fill holes and gaps. Refer to the manufacturer's instructions. See the view K of the figure.
F Right Thrust Reverser Pressure Seals ** ON A/C NOT FOR ALL
     (n) Install the hinge beam seal (18) on the seal retainer support with the two bolts (20) and two nuts (16).
     (o) TORQUE the nuts (16) to between 20 and 18 lbf.in (0.23 and 0.20 m.daN ) T.
     (p) Install the hinge beam seal (18) on the IFS with the bolt (19) and nut (16).
     (q) TORQUE the nut (16) to between 20 and 18 lbf.in (0.23 and 0.20 m.daN ) T.
     (r) Put the extension of the forward hinge-beam seal (21) into the end of hinge beam seal (18).
     (s) Clean unwanted sealant (Material No.PU3-0003) from the seals (18) and (21) and the adjacent surfaces with a lint-free cotton cloth (Material No.PU1-0001) before the sealant dries.
       1 Make the sealant (Material No.PU3-0003) flush with the surfaces of the adjacent seals.
     (t) You must let the sealant (Material No.PU3-0003) fully cure before you put the pressure seal into operation. Refer to the manufacturer's instructions.
NOTE: To make the curing process faster, increase the temperature of the sealant (Material No.PU3-0003) between 140 DEG.F (60.00 DEG.C) and 150 DEG.F (65.56 DEG.C) for at least four hours. Make sure the relative humidity is 20 percent or greater during this time. Use the LIGHT SOURCE - HEAT or equivalent as the heat source.
     (u) You must let the sealant (Material No.PU3-0002) cure for at least six hours before you put the aircraft into operation. Refer to the manufacturer's instructions.
NOTE: After six hours, the sealant (Material No.PU3-0002) will be in the tack-free condition.
   (8) Install the upper bifurcation seal (17).
     (a) Clean the mating surfaces of the applicable seal retainers and the upper bifurcation seal (17). Use PU2-0001alcohol, isopropyl on a clean lint-free cotton cloth (Material No.PU1-0001) to remove all loose soil, grease, hydraulic fluid or oil.
     (b) Remove the PU2-0001alcohol, isopropyl from the seal retainers and the upper bifurcation seal (17) with a clean lint-free cotton cloth (Material No.PU1-0001) before it dries.
     (c) Lightly rub the extension of the upper bifurcation seal (17) with PU1-0003abrasive paper, 220-Grit.
     (d) Clean the upper bifurcation seal (17) with PU2-0001alcohol, isopropyl on a clean lint-free cotton cloth (Material No.PU1-0001) to remove the unwanted material.
     (e) Remove the PU2-0001alcohol, isopropyl from the upper bifurcation seal (17) with a clean lint-free cotton cloth (Material No.PU1-0001) before it dries.
     (f) If necessary, cut the end of the hinge beam seal (18) to attach it along the extension of the upper bifurcation seal (17).
     (g) Make sure that the clearance between the upper bifurcation seal (17) and the adjacent hinge-beam seal (18) is 0.060 in. (1.52 mm) or less.
     (h) If necessary, cut the end of the upper bifurcation seal (17) to attach it along the extension of the upper IMC fire-seal (2).
     (i) Make sure that the clearance between the upper bifurcation seal (17) and the adjacent upper IMC fire-seal (2) is 0.060 in. (1.52 mm) or less.
     (j) Apply a layer of sealant (Material No.PU3-0003) mixture to the mating surfaces of the upper bifurcation seal (17) and the adjacent hinge-beam seal (18) and the upper IMC fire-seal (2). Refer to the manufacturer's instructions.
     (k) Apply the sealant (Material No.PU3-0003) mixture to the extension of the seal. Also apply the sealant (Material No.PU3-0003) mixture to the inner surface of the end of the other seal. Make sure the layers are between 0.01 in. (0.254 mm) and 0.02 in. (0.508 mm) thick.
F Sealant between Seals ** ON A/C NOT FOR ALL
     (l) Install the upper bifurcation seal (17) in the applicable seal retainers.
NOTE: Make sure that you install the seal with the pressurization holes facing forward towards the engine inlet.
     (m) Put the extension of the upper bifurcation (17) into the end of the hinge beam seal (18). Put the extension of the upper IMC fire seal (2) into the end of the upper bifurcation seal (17).
     (n) Clean unwanted sealant (Material No.PU3-0003) from the seals (2), (17) and (18) and the adjacent surfaces with a lint-free cotton cloth (Material No.PU1-0001) before the sealant dries.
       1 Make the sealant (Material No.PU3-0003) flush with the surfaces of the adjacent seals.
     (o) You must let the sealant (Material No.PU3-0003) fully cure before you put the pressure seal into operation. Refer to the manufacturer's instructions.
NOTE: To make the curing process faster, increase the temperature of the sealant (Material No.PU3-0003) between 140 DEG.F (60.00 DEG.C) and 150 DEG.F (65.56 DEG.C) for at least four hours. Make sure the relative humidity is 20 percent or greater during this time. Use the LIGHT SOURCE - HEAT or equivalent as the heat source.
   (9) Install the aft hinge-beam seal (15).
     (a) Clean the mating surfaces of the seal retainer and the aft hinge-beam seal (15). Use PU2-0001alcohol, isopropyl on a clean lint-free cotton cloth (Material No.PU1-0001) to remove all loose soil, grease, hydraulic fluid or oil.
     (b) Remove the PU2-0001alcohol, isopropyl from the seal retainer and the aft hinge-beam seal (15) with a clean lint-free cotton cloth (Material No.PU1-0001) before it dries.
     (c) Install the aft hinge-beam seal (15) in the seal retainer.
   (10) Extension of translating sleeve.
CAUTION: DO NOT EXTEND THE THRUST REVERSER TRANSLATING SLEEVE MORE THAN 3.93 IN. (100 MM) WHEN THE THRUST REVERSER DOOR ON THE INBOARD SIDE IS OPEN. THE TRANSLATING SLEEVE CAN HIT THE SLATS AND CAUSE DAMAGE TO THE COMPONENTS.
     (a) Manually extend the left thrust-reverser translating-sleeve a few inches or less to get access (Ref. AMM TASK 78-32-00-860-802).
   (11) Install the upper IFS bullnose-seal (31).
     (a) Clean the mating surfaces of the IFS and the upper IFS bullnose-seal (31). Use PU2-0001alcohol, isopropyl on a clean lint-free cotton cloth (Material No.PU1-0001) to remove all loose soil, grease, hydraulic fluid or oil.
     (b) Remove the PU2-0001alcohol, isopropyl from the mating surfaces of the IFS and the upper IFS bullnose-seal (31) with a clean lint-free cotton cloth (Material No.PU1-0001) before it dries.
     (c) Install the upper IFS bullnose-seal (31) to the IFS with the two nuts (32).
     (d) TORQUE the nuts (32) to between 20 and 18 lbf.in (0.23 and 0.20 m.daN ) T.
   (12) Install the lower IFS bullnose-seal (33).
     (a) Clean the mating surfaces of the IFS, shield support assembly (34) and the lower IFS bullnose-seal (33). Use PU2-0001alcohol, isopropyl on a clean lint-free cotton cloth (Material No.PU1-0001) to remove all loose soil, grease, hydraulic fluid or oil.
     (b) Remove the PU2-0001alcohol, isopropyl from the mating surfaces of the IFS, shield support assembly (34) and the lower IFS bullnose-seal (33) with a clean lint-free cotton cloth (Material No.PU1-0001) before it dries.
     (c) Install the lower IFS bullnose-seal (33) and shield support assembly (34) to the IFS with the two nuts (35).
     (d) TORQUE the nuts (35) to between 20 and 18 lbf.in (0.23 and 0.20 m.daN ) T.
   (13) Manually retract the applicable translating sleeve (Ref. AMM TASK 78-32-00-860-803).
Subtask 78-32-72-420-053-A ** ON A/C NOT FOR ALL
C. Installation of the IFS Vapor Barrier-Seal
F Right Thrust Reverser Vapor Barrier Seal ** ON A/C NOT FOR ALL
   (1) Install the vapor barrier seal (36).
     (a) Clean the mating surfaces of the seal retainer support, the closeout bracket and the vapor barrier seal (36). Use PU2-0001alcohol, isopropyl on a lint-free cotton cloth (Material No.PU1-0001) to remove all loose soil, grease, hydraulic fluid or oil.
     (b) Remove the PU2-0001alcohol, isopropyl from the mating surfaces of the seal retainer support, the closeout bracket and the vapor barrier seal (36) with a clean lint-free cotton cloth (Material No.PU1-0001) before it dries.
     (c) Lightly rub the extension of the hinge beam seal (18) with PU1-0003abrasive paper, 220-Grit.
     (d) Clean the extension of the hinge beam seal (18) with PU2-0001alcohol, isopropyl on a clean lint-free cotton cloth (Material No.PU1-0001) to remove the unwanted material.
     (e) Remove the PU2-0001alcohol, isopropyl from the hinge beam seal (18) with a clean lint-free cotton cloth (Material No.PU1-0001) before it dries.
     (f) If necessary, cut the end of the vapor barrier seal (36) to attach it along the extension of the hinge beam seal (18).
     (g) Make sure that the clearance between the vapor barrier seal (36) and the adjacent hinge-beam seal (18) is 0.060 in. (1.52 mm) or less.
     (h) Apply a thin brush layer of sealant (Material No.PU3-0003) mixture to the mating surfaces of the vapor barrier seal (36) and the adjacent hinge beam seal (18). Refer to the manufacturer's instructions.
     (i) Apply the sealant (Material No.PU3-0003) mixture to the extension of the seal. Also apply the sealant (Material No.PU3-0003) mixture to the inner surface of the end of the other seal. Make sure the layers are between 0.01 in. (0.254 mm) and 0.02 in. (0.508 mm) thick.
F Sealant between Seals ** ON A/C NOT FOR ALL
     (j) Install the vapor barrier seal (36) on the seal retainer support with the four nuts (37).
     (k) TORQUE the nuts (37) to between 20 and 18 lbf.in (0.23 and 0.20 m.daN ) T.
     (l) Put the extension of the hinge beam seal (18) into the end of the vapor barrier seal (36).
     (m) Clean unwanted sealant (Material No.PU3-0003) from the fire seals (7) and (8) and the adjacent surfaces with a lint-free cotton cloth (Material No.PU1-0001) before the sealant dries.
       1 Make the sealant (Material No.PU3-0003) flush with the surfaces of the adjacent seals.
     (n) You must let the sealant (Material No.PU3-0003) fully cure before you put the vapor barrier seal into operation. Refer to the manufacturer's instructions.
NOTE: To make the curing process faster, increase the temperature of the sealant (Material No.PU3-0003) between 140 DEG.F (60.00 DEG.C) and 150 DEG.F (65.56 DEG.C) for at least four hours. Make sure the relative humidity is 20 percent or greater during this time. Use the LIGHT SOURCE - HEAT or equivalent as the heat source.
Subtask 78-32-72-420-055-A ** ON A/C NOT FOR ALL
D. Examine all the seals that you installed. Make sure there are no holes or gaps between the seals and the structure below them. If you find holes or gaps, fill them with sealant as follows:
   (1) Light rub the mating surface of the structure with PU1-0003abrasive paper, 220-Grit.
   (2) Clean the mating surface of the structure with PU2-0001alcohol, isopropyl on a clean lint-free cotton cloth (Material No.PU1-0001) or equivalent to remove unwanted material.
   (3) Remove the PU2-0001alcohol, isopropyl from the mating surface of the structure with a clean lint-free cotton cloth (Material No.PU1-0001) or equivalent before it dries.
   (4) Apply a layer of sealant (Material No.PU3-0002) to the mating surface of the structure so that it fully fills the hole or gap.
   (5) You must let the sealant (Material No.PU3-0002) cure for at least six hours before you put the aircraft into operation. Refer to the manufacturer's instructions.
NOTE: After six hours, the sealant (Material No.PU3-0002) will be in the tack-free condition.
5. Close-up
Subtask 78-32-72-410-057-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 right thrust reverser cowl-doors (Ref. AMM TASK 78-36-00-410-802):
     (a) FOR [4020KM1] (POWER PLANT-DEMOUNTABLE, ENG 1)
451AL 452AR
     (b) FOR [4020KM2] (POWER PLANT-DEMOUNTABLE, ENG 2)
461AL 462AR
Subtask 78-32-72-440-052-A ** ON A/C NOT FOR ALL
B. Do the reactivation of the thrust reverser system after ground maintenance (Ref. AMM TASK 78-30-00-440-805).
Subtask 78-32-72-410-056-A ** ON A/C NOT FOR ALL
C. Close Access
   (1) Close the fan cowl doors (Ref. AMM TASK 71-13-00-410-802):
     (a) FOR [4020KM1] (POWER PLANT-DEMOUNTABLE, ENG 1)
437AL 438AR
     (b) FOR [4020KM2] (POWER PLANT-DEMOUNTABLE, ENG 2)
447AL 448AR
   (2) Remove the access platform(s).
   (3) Remove the WARNING NOTICE(S).
[Rev.10 from 2021] 2026.04.01 03:33:45 UTC
"Aviabrain" 2025