W DOC AIRBUS | AMM A320F

Installation of the Hydraulic Inline Damper

TASK 29-13-46-400-803-A
Installation of the Hydraulic Inline Damper

WARNING: BE CAREFUL WHEN YOU DO WORK ON THE ENGINE AFTER SHUTDOWN. THE ENGINE CAN STAY HOT FOR A LONG TIME. IF YOU DO NOT OBEY THIS INSTRUCTION, INJURY CAN OCCUR.
WARNING: YOU MUST NOT GET HYDRAULIC FLUID ON YOUR SKIN, IN YOUR EYES OR IN YOUR MOUTH. THE HYDRAULIC FLUID IS POISONOUS AND CAN BE ABSORBED INTO YOUR BODY. IF YOU ACCIDENTALLY GET HYDRAULIC FLUID IN YOUR EYES, MOUTH OR ON YOUR SKIN, FLUSH WITH WATER AND GET MEDICAL AID.
WARNING: OBEY THE HYDRAULIC SAFETY PROCEDURES.
WARNING: BE CAREFUL WHEN YOU USE CONSUMABLE MATERIALS. OBEY THE MATERIAL MANUFACTURER'S INSTRUCTIONS AND YOUR LOCAL REGULATIONS.
CAUTION: HYDRAULIC FLUID CAN CAUSE DAMAGE TO EQUIPMENT. IF HYDRAULIC FLUID FALLS ON A SURFACE, IMMEDIATELY CLEAN THE SURFACE WITH A CLEAN CLOTH.
ZONE: 460
FIN: 3031GM ** 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
COVER - PROTECTION
No specific
AR
WARNING NOTICE(S)
No specific
1
WRENCH - STANDARD
No specific
Torque wrench: range to between 1062 and 973 lbf.in (12.00 and 10.99 m.daN ) T
No specific
Torque wrench: range to between 9.5 and 8.5 m.daN (70.06 and 62.68 lbf.ft ) T
 B. Consumable Materials
REFERENCE
DESIGNATION
(Material No.PU1-0001)
lint-free cotton cloth
(Material No.PU10-0013)
container - 0.25 gal. (1 L)
(Material No.PU2-0001)
alcohol, isopropyl
(Material No.PU2-0002)
acetone
(Material No.PU4-0010)
base primer
(Material No.PU4-0011)
activator
(Material No.PU4-0012)
thinner
(Material No.PU6-0003)
lubricant
 C. Work Zones and Access Panels
ZONE/ACCESS
ZONE DESCRIPTION
460
ENG 2 THRUST REVERSER & EXHAUST SECTION
195BB, 198CB
FOR [4020KM2] (POWER PLANT-DEMOUNTABLE, ENG 2)
447AL, 448AR, 462AR
 D. Expendable Parts
FIG.ITEM
DESIGNATION
IPC-CSN
2
PACKING
AIPC 29-11-86-20-430
3
RETAINERS
AIPC 29-11-86-20-435
4
PACKING
AIPC 29-11-86-20-437
 E. Referenced Information
REFERENCE
DESIGNATION
TASK 12-12-29-611-001-A
Fill the Hydraulic Fluid Reservoir with a Hand Pump
TASK 29-10-00-864-002-A
Depressurize the Yellow Hydraulic System
TASK 29-13-00-710-002-A
Operational Test of the Yellow Hydraulic System
TASK 29-14-00-614-001-A
Depressurization of the Hydraulic Reservoirs
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 78-36-00-010-802-A
Opening of the Thrust Reverser Cowl-Doors
TASK 78-36-00-410-802-A
Closing of the Thrust Reverser Cowl-Doors
F Hydraulic Inline Damper
3. Job Set-up
Subtask 29-13-46-860-057-A ** ON A/C NOT FOR ALL
A. Aircraft Maintenance Configuration
   (1) Make sure that the Yellow hydraulic system is depressurized.
(Ref. AMM TASK 29-10-00-864-002)
   (2) Make sure that the reservoir of the Yellow hydraulic system is depressurized.
(Ref. AMM TASK 29-14-00-614-001)
Subtask 29-13-46-941-053-A ** ON A/C NOT FOR ALL
B. Safety Precautions
   (1) On AIR COND panel 30VU:
  • Make sure that the APU BLEED pushbutton switch is released (the ON legend is off).
  • Make sure that a WARNING NOTICE(S) is in position to tell persons not to operate this pushbutton switch.
   (2) Make sure that a WARNING NOTICE(S) is in position to tell persons not to pressurize the Yellow hydraulic system:
  • On the HYD section of panel 40VU
  • On access door 198CB, on the ground-service panel of the Yellow hydraulic system.
   (3) Make sure that a WARNING NOTICE(S) is in position on access door 195BB to tell persons not to pressurize the reservoir of the Yellow hydraulic system.
   (4) Make sure that you did the procedure to prevent engine motoring
(Ref. AMM TASK 71-00-00-860-833).
Subtask 29-13-46-010-056-A ** ON A/C NOT FOR ALL
C. Get Access
   (1) Make sure that the fan cowl doors are open (Ref. AMM TASK 71-13-00-010-802):
     (a) FOR [4020KM2] (POWER PLANT-DEMOUNTABLE, ENG 2)
447AL 448AR
Subtask 29-13-46-040-051-A ** ON A/C NOT FOR ALL
D. Deactivation of the Thrust Reverser System for 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 maintenance (Ref. AMM TASK 78-30-00-040-805).
Subtask 29-13-46-010-057-A ** ON A/C NOT FOR ALL
E. Get Access
   (1) Make sure that the right thrust-reverser cowl-door is open (Ref. AMM TASK 78-36-00-010-802):
     (a) FOR [4020KM2] (POWER PLANT-DEMOUNTABLE, ENG 2)
462AR
4. Procedure
Subtask 29-13-46-420-052-A ** ON A/C NOT FOR ALL
A. Installation of the Hydraulic Inline Damper
CAUTION: YOU MUST USE A WRENCH TO HOLD THE MATING PARTS WHEN YOU LOOSEN OR TIGHTEN THE TUBE NUTS. IF YOU DO NOT OBEY THIS CAUTION, YOU CAN TWIST OR CAUSE DAMAGE TO THE TUBES.
CAUTION: WIPE CLEAN ALL PARTS AND TOOLS AS NECESSARY TO REMOVE UNWANTED DEBRIS AND PREVENT DAMAGE TO THE ENGINE.
   (1) Clean the component interfaces and the adjacent area.
   (2) Do an inspection of the component interfaces and the adjacent area.
   (3) Make sure that the hydraulic line end-fittings are serviceable.
   (4) Make sure that a PU10-0013container - 0.25 gal. (1 L) is in position below the hydraulic pump connections.
   (5) 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 from the hydraulic pressure hose and the hydraulic pump to prevent damage to the engine.
   (6) Apply a thin layer of lubricant (Material No.PU6-0003) to the new packings (2), (4), two new retainers (3) and to the threads of the hydraulic inline damper (1).
   (7) Install the new AIPC 29-11-86-20-430 PACKING (2), AIPC 29-11-86-20-437 PACKING (4) and two new AIPC 29-11-86-20-435 RETAINERS (3) on the hydraulic inline damper (1).
   (8) Install the hydraulic inline damper (1) on the hydraulic pump.
   (9) TORQUE the hydraulic inline damper (1) to between 1062 and 973 lbf.in (12.00 and 10.99 m.daN ) T.
   (10) Clean the surface of the hydraulic inline damper (1) and the adjacent surface with a clean lint-free cotton cloth (Material No.PU1-0001) made moist with acetone (Material No.PU2-0002) or PU2-0001alcohol, isopropyl. Clean until you remove all the contamination you can see.
   (11) Clean again the surface of the hydraulic inline damper (1) and the adjacent surface with a clean lint-free cotton cloth (Material No.PU1-0001) made moist with acetone (Material No.PU2-0002) or PU2-0001alcohol, isopropyl. Remove the acetone (Material No.PU2-0002) or PU2-0001alcohol, isopropyl with a lint-free cotton cloth (Material No.PU1-0001) before the acetone (Material No.PU2-0002) or PU2-0001alcohol, isopropyl becomes dry.
   (12) Clean the surface of the hydraulic inline damper (1) and the adjacent surface one more time with a clean, dry lint-free cotton cloth (Material No.PU1-0001) .
   (13) Mix the base primer (Material No.PU4-0010) with the activator (Material No.PU4-0011) and thinner (Material No.PU4-0012) . Refer to manufacturer's instructions.
   (14) Paint a torque stripe on the hydraulic inline damper (1) and the adjacent surface with the base primer (Material No.PU4-0010) mixture.
   (15) Connect the hydraulic pressure hose to the hydraulic inline damper (1) on the hydraulic pump.
   (16) Adjust the hydraulic pressure hose to keep preload to a minimum. Make sure that there are no kinks in the hydraulic pressure hose.
   (17) Hold the hydraulic inline damper (1) with a WRENCH - STANDARD and TORQUE the union nut of the hydraulic pressure hose to between 9.5 and 8.5 m.daN (70.06 and 62.68 lbf.ft ) T.
Use the double torque procedure as follows:
  • Torque to the specified value.
  • Loosen the nut by one turn.
  • Torque to the specified value again.
   (18) Clean the surface of the hydraulic pressure hose and the adjacent surface with a clean lint-free cotton cloth (Material No.PU1-0001) made moist with acetone (Material No.PU2-0002) or PU2-0001alcohol, isopropyl. Clean until you remove all the contamination you can see.
   (19) Clean again the surface of the hydraulic pressure hose and the adjacent surface with a clean lint-free cotton cloth (Material No.PU1-0001) made moist with acetone (Material No.PU2-0002) or PU2-0001alcohol, isopropyl. Remove the acetone (Material No.PU2-0002) or PU2-0001alcohol, isopropyl with a lint-free cotton cloth (Material No.PU1-0001) before the acetone (Material No.PU2-0002) or PU2-0001alcohol, isopropyl becomes dry.
   (20) Clean the surface of the hydraulic pressure hose and the adjacent surface one more time with a clean, dry lint-free cotton cloth (Material No.PU1-0001) .
   (21) Paint a torque stripe on the hydraulic pressure hose and the adjacent surface with the base primer (Material No.PU4-0010) mixture.
Subtask 29-13-46-710-052-A ** ON A/C NOT FOR ALL
B. Operational Test
   (1) Remove the container.
   (2) Do the operational test of the Yellow hydraulic system (Ref. AMM TASK 29-13-00-710-002).
   (3) After the dry-motoring, make sure that there were no leaks from the hydraulic connections.
   (4) Make sure that the level of the hydraulic fluid in the Yellow reservoir is correct. If necessary, fill the reservoir (Ref. AMM TASK 12-12-29-611-001).
5. Close-up
Subtask 29-13-46-410-052-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) Remove the WARNING NOTICE(S).
   (3) Close the right thrust-reverser cowl-door (Ref. AMM TASK 78-36-00-410-802):
     (a) FOR [4020KM2] (POWER PLANT-DEMOUNTABLE, ENG 2)
462AR
Subtask 29-13-46-440-050-A ** ON A/C NOT FOR ALL
B. Do the reactivation of the thrust reverser system after maintenance (Ref. AMM TASK 78-30-00-440-805).
Subtask 29-13-46-410-053-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 [4020KM2] (POWER PLANT-DEMOUNTABLE, ENG 2)
447AL 448AR
   (2) Close access doors 198CB and 195BB.
[Rev.10 from 2021] 2026.04.01 13:06:25 UTC
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