Airbus a320 Brake Accu Pnc

7/24/2019 Airbus a320 Brake Accu Pnc

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Customer : AEEType : TF-NRev. Date : Aug 01, 2015

Manual : AMMSelected applicability : ALL

32-44-11 - ACCUMULATOR - BRAKE YELLOW PRESSURE

Print Date: October 30, 2015 Page 1 of 19

AIRBUS S.A.S. ALL RIGHTS RESERVED. CONFIDENTIAL AND PROPRIETARY DOCUMENT.

** ON A/C ALL


32-44-11 PB 401 CONF 00 - ACCUMULATOR - BRAKE

YELLOW PRESSURE - REMOVAL/INSTALLATION

TASK 32-44-11-000-001-ARemoval of the Accumulator

WARNING: MAKE SURE THAT ALL THE CIRCUITS IN MAINTENANCE ARE ISOLATED BEFORE YOUSUPPLY ELECTRICAL POWER TO THE AIRCRAFT.

WARNING: PUT THE SAFETY DEVICES AND THE WARNING NOTICES IN POSITION BEFORE YOUSTART A TASK ON OR NEAR:- THE FLIGHT CONTROLS- THE FLIGHT CONTROL SURFACES- THE LANDING GEAR AND THE RELATED DOORS- COMPONENTS THAT MOVE.MOVEMENT OF COMPONENTS CAN KILL OR CAUSE INJURY TO PERSONS AND/OR CANCAUSE DAMAGE TO THE EQUIPMENT.

WARNING: OBEY THE HYDRAULIC SAFETY PROCEDURES.

FIN : 2582GM

1. Reason for the JobSelf explanatory

2Job Set-up Information

A. Fixtures, Tools, Test and Support Equipment

REFERENCE QTY DESIGNATION

No specific 1 ACCESS PLATFORM 2M (6 FT)

No specific 1 CONTAINER 5 L (1.32 USGAL)

No specific AR PLUG - BLANKING

No specific AR SAFETY CLIP - CIRCUIT BREAKER

No specific AR WARNING NOTICE(S)

B. Referenced Information

REFERENCE DESIGNATION

(Ref. 29-00-00-910-002-A). Safety Procedures of the Hydraulic System

(Ref. 29-10-00-864-002-A). Depressurize the Yellow Hydraulic System

(Ref. 29-14-00-614-001-A). Depressurization of the Hydraulic Reservoirs

(Ref. 29-23-00-860-001-A). Disconnection of the Isolation Coupling of the Power Transfer Unit(PTU)

(Ref. 32-12-00-010-001-A). Open the Main Gear Doors for Access


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(Ref. 32-44-11-200-001-A). Functional Check of Parking/Emergency Brake Accumulator by Read-

ing the Charge Pressure on the Accumulator GaugeAccumulator 2582GM SHEET 1

2582GM

1

B

2 3

7

8

9

7

6 5

4

1213

1 1 10

A

FR47

B

Z744

A

N_MM_324411_4_AAM0_01_00

Figure 32-44-11-991-00100-A / SHEET 1/1 - Accumulator 2582GM** ON A/C ALL


3/19






3. Job Set-up

** ON A/C 108-200, 251-300Subtask 32-44-11-860-050-A

A. Aircraft Maintenance Configuration

(1) Depressurize the Yellow hydraulic system (Ref. AMM TASK 29-10-00-864-002) .

(2) Push the pressure release button on the pressure relief valve 3067GM to depressurize the alternatebrake system.

(3) Make sure that the pressure on the gauge 2585GM decreases to the fill pressure of the accumulator2582GM (Ref. AMM TASK 32-44-11-200-001) .

** ON A/C 001-018, 025-025, 027-028, 053-104, 201-250, 301-500, 513-700

Subtask 32-44-11-860-050-BA. Aircraft Maintenance Configuration

(1) Depressurize the Yellow hydraulic system (Ref. AMM TASK 29-10-00-864-002) .

(2) Set the Anti-skid and Nose Wheel switch to OFF.

(3) Push the pressure release button on the pressure relief valve 3067GM to depressurize the alternatebrake system.

(4) Make sure that the pressure on the gauge 2585GM decreases to the fill pressure of the accumulator2582GM (Ref. AMM TASK 32-44-11-200-001) .

** ON A/C ALL

Subtask 32-44-11-010-050-AB. Get Access

(1) Open the right MLG door (Ref. AMM TASK 32-12-00-010-001) .

Subtask 32-44-11-869-050-A

C. Disconnection of the PTU Isolation Coupling

(1) Depressurize the reservoir of the Yellow hydraulic system (Ref. AMM TASK 29-14-00-614-001) .

(2) Disconnect the PTU isolation coupling (Ref. AMM TASK 29-23-00-860-001) .

(3) Put the ACCESS PLATFORM 2M (6 FT) in position.

(4) Put the CONTAINER 5 L (1.32 USGAL) below the accumulator 2582GM to collect the hydraulic fluid

leakage.Subtask 32-44-11-865-052-A

D. Open, safety and tag this(these) circuit breaker(s):

PANEL DESIGNATION FIN LOCATION

** ON A/C 001-018, 025-025, 027-028, 053-104, 201-250, 301-500, 513-700

49VU ABCU &/Y BRK/PRESS IND 61GG C10

** ON A/C 108-200, 251-300

49VU L/G/Y BRK/PRESS/IND 61GG C10

** ON A/C ALL


4/19







121VU HYDRAULIC/BRAKING AND STEER-

ING/SYS2/SPLY

4GG M36

121VU HYDRAULIC/BRAKING AND STEER-ING/SYS2/CTL

3GG M35


1GG M34

121VU HYDRAULIC/BRAKING AND STEER-ING/SYS1/IND AND/SPLY

2GG M33

121VU HYDRAULIC/PARK BRK/CTL/STBY 71GG N37

121VU HYDRAULIC/PARK BRK/CTL/NORM 70GG N36

121VU HYDRAULIC/HYD POWER/Y 3803GX N30

121VU HYDRAULIC/Y HYD/PUMP ENG2/MONG 3700GD Q37

121VU HYDRAULIC/Y HYD/PUMP ENG2/CTL 3701GD Q36

123VU Y HYD/ELEC/PUMP 3802GX AB06123VU Y HYD/ELEC/ELEC PUMP/NORM 3801GX AB03

Subtask 32-44-11-941-051-A

E. Safety Precautions

(1) Put the WARNING NOTICE(S) in position to tell persons not to pressurize the Yellow hydraulicsystem: on the panel 40VU in the cockpit, on the ground service panel of the Yellow hydraulic system.

4. Procedure(Ref. Fig. Accumulator 2582GM SHEET 1)

Subtask 32-44-11-020-050-AA. Removal of the Accumulator 2582GM

(1) Obey the hydraulic safety procedures (Ref. AMM TASK 29-00-00-910-002) .

(2) Remove the cap (10) and carefully turn the charging valve (11) to the open position to depressurizethe accumulator (1).

(3) Disconnect the connector (4) from the reducer (3).

(4) Remove the nut (5) and the washer (6) from the reducer (3).

(5) Remove the nuts (9), the washers (8) and release the clamps (7).

(6) Remove the accumulator (1) from the aircraft structure.

(7) Put blanking plugs on the disconnected line ends.

TASK 32-44-11-400-001-AInstallation of the Accumulator

WARNING: MAKE SURE THAT ALL THE CIRCUITS IN MAINTENANCE ARE ISOLATED BEFORE YOUSUPPLY ELECTRICAL POWER TO THE AIRCRAFT.

WARNING: PUT THE SAFETY DEVICES AND THE WARNING NOTICES IN POSITION BEFORE YOUSTART A TASK ON OR NEAR:- THE FLIGHT CONTROLS- THE FLIGHT CONTROL SURFACES- THE LANDING GEAR AND THE RELATED DOORS

- COMPONENTS THAT MOVE.


5/19






MOVEMENT OF COMPONENTS CAN KILL OR CAUSE INJURY TO PERSONS AND/OR CANCAUSE DAMAGE TO THE EQUIPMENT.

WARNING: OBEY THE HYDRAULIC SAFETY PROCEDURES.

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

FIN : 2582GM

1. Reason for the JobSelf explanatory

2Job Set-up Information




No specific Torque wrench: rangeto between 0.67 and 13.50 m.daN (4.94 and 99.57 lbf.ft)

B. Consumable Materials


(Material No. 02-ABA1) Phosphate Ester Hydraulic Fluid-General Power - -

(Material No. 14-QFB1) Wire-Locking Dia: 0.8 mm CRES Nickel Alloy -

C. Expendable Parts

FIG.ITEM DESIGNATION IPC-CSN

2 packing 32-44-03-01-030

13 packing 32-44-03-01-060

2 packing 32-44-83-02-160

13 packing 32-44-83-02-170

D. Referenced Information


(Ref. 12-12-29-611-001-A). Fill the Hydraulic Fluid Reservoir with a Hand Pump

(Ref. 20-23-22-910-001-A). Marking of the Unions after Application of Standard or Specific Tight-ening Torque

(Ref. 29-00-00-910-002-A). Safety Procedures of the Hydraulic System


(Ref. 29-14-00-614-001-A). Depressurization of the Hydraulic Reservoirs

(Ref. 29-23-00-860-001-A). Disconnection of the Isolation Coupling of the Power Transfer Unit(PTU)

(Ref. 29-23-00-860-002-A). Connection of the Isolation Coupling of the Power Transfer Unit (PTU)


(Ref. 32-12-00-410-001-A). Close the Main Gear Doors after Access

(Ref. 32-43-00-710-001-A). Operational Check of Alternate Braking System


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(Ref. 32-43-00-870-002-A). Bleeding of the High Pressure Alternate Braking System

(Ref. 32-44-11-200-001-A). Functional Check of Parking/Emergency Brake Accumulator by Read-ing the Charge Pressure on the Accumulator Gauge

(Ref. 51-75-13-916-002-A). Repair to a layer of Corrosion Preventive Compound

Accumulator 2582GM SHEET 1

3. Job Set-up

Subtask 32-44-11-860-051-A


(1) Make sure that the PTU isolation coupling is disconnected (Ref. AMM TASK 29-23-00-860-001) .

(2) Make sure that the Yellow hydraulic system is depressurized (Ref. AMM TASK 29-10-00-864-002) .

(3) Make sure that the reservoir of the Yellow hydraulic system is depressurized(Ref. AMM TASK 29-14-00-614-001) .

Subtask 32-44-11-865-053-A

B. Make sure that this(these) circuit breaker(s) is(are) open, safetied and tagged:


** ON A/C 001-018, 025-025, 027-028, 053-104, 201-250, 301-500, 513-700


** ON A/C 108-200, 251-300


** ON A/C ALL

121VU HYDRAULIC/BRAKING AND STEER-ING/SYS2/SPLY

4GG M36


3GG M35


1GG M34


2GG M33


121VU HYDRAULIC/PARK BRK/CTL/NORM 70GG N36121VU HYDRAULIC/HYD POWER/Y 3803GX N30



123VU Y HYD/ELEC/PUMP 3802GX AB06

123VU Y HYD/ELEC/ELEC PUMP/NORM 3801GX AB03

Subtask 32-44-11-941-052-A

C. Safety Precautions

(1) Make sure that the WARNING NOTICE(S) are in position to tell persons not to pressurize the Yellowhydraulic system: on the panel 40VU in the cockpit,

on the ground service panel of the Yellow hydraulic system.

Subtask 32-44-11-560-050-A


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D. Preparation of the Replacement Component

WARNING: USE GOGGLES WHEN YOU REMOVE OR INSTALL LOCKWIRE. EACH TIME YOU CUTLOCKWIRE, REMOVE AND DISCARD IT IMMEDIATELY. LOOSE LOCKWIRE CAN CUTYOU OR MAKE YOU BLIND, AND/OR CAN CAUSE DAMAGE.

(1) Remove and discard the lockwire from the adapter (12) of the removed accumulator (1).

(2) Remove the adapter (12). Remove and discard the packing (13) from the adapter (12).

(3) Remove the reducer (3). Remove and discard the packing (2) from the reducer (3).

(4) Install blanking plugs in the open ports of the removed accumulator (1).

(5) Make sure that the parts retained from the removed component are clean and in the correct condition.

(6) Apply Phosphate Ester Hydraulic Fluid-General Power - - (Material No. 02-ABA1) to the threads of

the reducer (3).(7) Apply Phosphate Ester Hydraulic Fluid-General Power - - (Material No. 02-ABA1) to the new IPC -

CSN (32-44-03-01-030) packing (2) or IPC -CSN (32-44-83-02-160) packing (2).

(8) Install the packing (2) on the reducer (3).

(9) Remove the blanking plugs from the new accumulator (1).

(10) Install the reducer (3) in the accumulator (1).

(11) TORQUE the reducer (3) to between 6.26 and 6.83 m.daN (46.17 and 50.37 lbf.ft).

(12) Install the new IPC -CSN (32-44-03-01-060) packing (13) or IPC -CSN (32-44-83-02-170) packing (13) on the adapter (12).

(13) Install the adapter (12) in the accumulator (1).

(14) TORQUE the adapter (12) to between 1.08 and 1.19 m.daN (95.58 and 105.31 lbf.in).

(15) Safety the adapter (12) with Wire-Locking Dia: 0.8 mm CRES Nickel Alloy - (Material No. 14-QFB1).

Subtask 32-44-11-560-051-A

E. Preparation for Installation

(1) Clean the component interface and/or the adjacent area.

(2) Do an inspection of the component interface and/or the adjacent area.

(3) Make sure that the parts retained from the removed component are clean and in the correct condition.

4. Procedure(Ref. Fig. Accumulator 2582GM SHEET 1)

Subtask 32-44-11-420-050-A

A. Installation of the Accumulator 2582GM

(1) Obey the hydraulic safety procedures (Ref. AMM TASK 29-00-00-910-002) .

(2) Put the accumulator (1) in the correct position on the aircraft structure. Make sure that you can readthe pressure gage on the adapter (12).

(3) Put the clamps (7) in position and install the washers (8) and the nuts (9).

(4) Install the washer (6) and the nut (5).

(5) Remove the blanking plugs and connect the connector (4) to the reducer (3).

(6) TORQUE the connector (4) to between 5.4 and 5.9 m.daN (39.82 and 43.51 lbf.ft) .

(7) Paint a red line across the connector (4) (Ref. AMM TASK 20-23-22-910-001) .


8/19






Subtask 32-44-11-865-054-A

B. Remove the safety clip(s) and the tag(s) and close this(these) circuit breaker(s):


** ON A/C 001-018, 025-025, 027-028, 053-104, 201-250, 301-500, 513-700


** ON A/C 108-200, 251-300


** ON A/C ALL


4GG M36


3GG M35


1GG M34


2GG M33


121VU HYDRAULIC/PARK BRK/CTL/NORM 70GG N36

121VU HYDRAULIC/HYD POWER/Y 3803GX N30



123VU Y HYD/ELEC/PUMP 3802GX AB06123VU Y HYD/ELEC/ELEC PUMP/NORM 3801GX AB03

Subtask 32-44-11-860-052-A

C. Preparation for Test

(1) Do the nitrogen pressure check on brake accumulator (Ref. AMM TASK 32-44-11-200-001) .

(2) Connect the PTU isolation coupling (Ref. AMM TASK 29-23-00-860-002) .

(3) Bleed the alternate brake system (Ref. AMM TASK 32-43-00-870-002) .

(4) If necessary fill the reservoir of the Yellow hydraulic system to the correct level(Ref. AMM TASK 12-12-29-611-001) .

(5) Open the right MLG door (Ref. AMM TASK 32-12-00-010-001) .

Subtask 32-44-11-710-050-A

D. Test

(1) Do an operational test of the alternate braking system with anti-skid(Ref. AMM TASK 32-43-00-710-001) .

(2) Make sure that there is no hydraulic fluid leakage from the accumulator 2582GM.

5. Close-up

Subtask 32-44-11-410-051-A

A. Close Access

(1) Apply corrosion protection to the connector (4) and the adjacent area

(Ref. AMM TASK 51-75-13-916-002) .

(2) Remove the container.


9/19






(3) Remove the warning notice(s).

(4) Remove the access platform(s).

(5) Make sure that the work area is clean and clear of tools and other items.

(6) Close the right MLG door (Ref. AMM TASK 32-12-00-410-001) .

(7) Remove the ground support and maintenance equipment, the special and standard tools and all otheritems.

Figure 32-44-11-991-00100-A / SHEET 1/1 - Accumulator 2582GM

32-44-11 PB 601 CONF 00 - ACCUMULATOR -BRAKE YELLOW PRESSURE - INSPECTION/CHECK

TASK 32-44-11-200-001-A

Functional Check of Parking/Emergency Brake Accumulator by Reading the Charge Pressure on the AccumulatorGauge

WARNING: MAKE SURE THAT THE GROUND SAFETY-LOCKS ARE IN POSITION ON THE LANDINGGEAR.

FIN : 2582GM

1. Reason for the JobRefer to the MPD TASK: 324411-01FUNCTIONAL CHECK OF PARKING/EMERGENCY BRAKE ACCUMULATOR BY READING THE CHARGE

PRESSURE ON THE ACCUMULATOR GAUGE2

Job Set-up Information



No specific AR ACCESS PLATFORM 2M (6 FT) - ADJUSTABLE

No specific AR SAFETY CLIP - CIRCUIT BREAKER


B. Consumable Materials


(Material No. 14-CCB6) Testing Medium-Leak Detection - Oxygen System

C. Work Zones and Access Panels

ZONE/ACCESS ZONE DESCRIPTION

148 MAIN GEAR WELL AND HYDRAULIC COMPARTMENT

744 MAIN DOOR

D. Referenced Information


10/19







(Ref. 12-14-32-614-002-A). Nitrogen Filling of the Yellow Hydraulic System, Brake Pressure Accu-

mulator(Ref. 24-42-00-861-001-A). Energize the Ground Service Network from the External Power

(Ref. 24-42-00-862-001-A). De-energize the Ground Service Network Supplied from the ExternalPower

(Ref. 29-00-00-864-001-A). Put the Related Hydraulic System in the Depressurized Configurationbefore Maintenance Action

(Ref. 29-00-00-870-007-A). Bleeding Procedure of the Yellow Hydraulic System Downstream ofthe Engine Pump


(Ref. 29-24-00-863-001-A). Pressurize the Yellow Hydraulic System with the Electric Pump


(Ref. 32-12-00-410-001-A). Close the Main Gear Doors after Access

(Ref. 32-44-11-000-001-A). Removal of the Accumulator(Ref. 32-44-11-400-001-A). Installation of the Accumulator

(Ref. 32-44-13-000-001-A). Removal of the Charging Valve

(Ref. 32-44-13-400-001-A). Installation of the Charging Valve

(Ref. 32-44-14-000-001-A). Removal of the Accumulator Pressure Gage

(Ref. 32-44-14-400-001-A). Installation of the Accumulator Pressure Gage

** ON A/C 108-200

PRE SB 32-1215 for A/C 108-109

Accumulator Nitrogen Fill-Pressure SHEET 1

Brake Accumulator Nitrogen Fill Pressure Reporting Sheet SHEET 1

** ON A/C 001-018, 025-025, 027-028, 053-104, 201-500, 513-700POST SB 32-1215 for A/C 108-109

Accumulator Nitrogen Fill-Pressure SHEET 1


11/19






80-30 -20 -10 0 10 20 30 40 50 60

1160

1450

1510

1550

1600

1650

-40

TEMPERATURE

(deg.C)

(deg.F)

83

90

93

100

104

107

110

114

1400

1350

1310

1260

1200

PRESSURE (psi)PRESSURE (bar)

-22 -4 14 32 50 68 86 104 122 140-40

87

97

N_MM_324411_6_AAB0_01_00

Figure 32-44-11-991-00400-A / SHEET 1/1 - Accumulator Nitrogen Fill-Pressure** ON A/C 108-200 | PRE SB 32-1215 for A/C 108-109


12/19






BRAKE ACCUMULATOR NITROGEN FILL PRESSURE

USE THIS FORM TO PROVIDE AIRBUS WITH THE RESULT OF BRAKE ACCUMULATOR NITROGEN FILL PRESSURE CHECK.

THE REPORTED DATA WILL BE USED ONLY TO SUPPORT THE OPERATOR FOR TROUBLE SHOOTING.

PLEASE FILL IN THE FOLLOWING FORM:

AIRCRAFT PROGRAM:

MSN:

CHARGE PRESSURE BEFORE REFILLING:

TEMPERATURE DURING CHARGE PRESSURE MEASUREMENT (IN C):

AIRBUS THANK YOU FOR THE TIME YOU HAVE TAKEN IN COMPLETING THIS FORM.

AIRBUS GUARANTEE THE CONFIDENTIALITY OF THE DATA RECEIVED.

REPORTING SHEET

CHARGE PRESSURE AFTER REFILLING:

TEMPERATURE DURING CHARGE PRESSURE MEASUREMENT (IN C):

EXTERNAL LEAK CHECK PERFORMED: YES/NO

EXTERNAL LEAK NOTICED: YES/NO IF YES LOCATION:

ACCUMULATOR REPLACED: YES/NO

IS IT A PERIODIC CHECK OR UNSCHEDULED CHECK:

ADDITIONAL COMMENTS:

OPERATOR:

NAME/TITLE:

FEEL FREE TO ATTACH TO THIS FORM ANY RELEVANT INFORMATION LIKE PICTURES, FLIGHT CREW REPORT, PFR,

PLEASE RETURN THIS COMPLETED SHEET TO:

AIRBUS

BRAKING AND STEERING SYSTEMS SUPPORT ENGINEERING-SEEL2

CUSTOMER SERVICES

THROUGH E-MAIL TO:

S/N OF THE ACCUMULATOR:

DATE:

REPORTING. BRAKING-STEERING@AIRBUS. COM

IF UNSCHEDULED, PLEASE PROVIDE THE REASON:

BSCU TSD. OTHER...

OR VIA YOUR RESIDENT CUSTOMER SUPPORT OFFICE.N_MM_324411_6_AAA0_01_02

Figure 32-44-11-991-00300-A / SHEET 1/1 - Brake Accumulator Nitrogen Fill Pressure Reporting Sheet** ON A/C ALL


13/19






80

77

70

65

61

56-30 -20 -10 0 10 20 30 40 50 60

810

885

914

943

986

1015

1044

1088

1117

1160

-40

TEMPERATURE

(deg.C)

(deg.F)

PRESSURE (psi)PRESSURE (bar)

-22 -4 14 32 50 68 86 104 122 140-40

59

63

68

72

75

850

N_MM_324411_6_AAC0_01_00

Figure 32-44-11-991-00400-B / SHEET 1/1 - Accumulator Nitrogen Fill-Pressure** ON A/C 001-018, 025-025, 027-028, 053-104, 201-500, 513-700 |EMB SB 32-1215 for A/C 251-251 | POST SB 32-1215 for A/C 108-109


14/19






3. Job Set-up

Subtask 32-44-11-860-054-A


(1) Make sure that the wheel chocks are in position.

(2) Energize the ground service network(Ref. AMM TASK 24-42-00-861-001) .

(3) On the parking brake panel 110VU, make sure that the PARKING BRK control-switch (73GG) is inthe OFF position.

(4) Make sure that the Yellow hydraulic system is depressurized.(Ref. AMM TASK 29-00-00-864-001) .

(5) Depressurize the Yellow hydraulic system(Ref. AMM TASK 29-10-00-864-002) .

Subtask 32-44-11-865-055-A

B. Open, safety and tag this(these) circuit breaker(s):



4GG M36


3GG M35


1GG M34


2GG M33

Subtask 32-44-11-941-050-A

C. Safety Precaution

(1) Put the WARNING NOTICE(S) in position to tell persons not to pressurize the yellow hydraulic on the panel 40 VU in the cockpit on the Ground Service Panel of the yellow hydraulic system, access door 198CB

Subtask 32-44-11-010-052-A

D. Get Access

(1) Open the main door of the right main landing gear (Ref. AMM TASK 32-12-00-010-001) .

(2) Put the ACCESS PLATFORM 2M (6 FT) - ADJUSTABLE in position in zone 148.

4. Procedure

** ON A/C 108-200

PRE SB 32-1215 for A/C 108-109

Subtask 32-44-11-210-050-A

A. Check of the Nitrogen Fill Pressure(Ref. Fig. Accumulator Nitrogen Fill-Pressure SHEET 1)

NOTE: If you do this check immediately after the aircraft landing, let the pressure become stable for onehour to get a more accurate value (temperature compensation of the accumulator).


15/19






(1) When you do the check of the brake-accumulator nitrogen fill-pressure, record the data on the brake-accumulator nitrogen fill-pressure reporting-sheet to help Airbus continuous monitoring.

** ON A/C 108-200

(Ref. Fig. Brake Accumulator Nitrogen Fill Pressure Reporting Sheet SHEET 1)

** ON A/C 108-200

PRE SB 32-1215 for A/C 108-109

(2) On the brake manifold 3016GM:

(a) Operate the manual depressurization button on the brake relief valve 3067GM to release thehydraulic pressure in the brake system.

(3) Let the pressure become stable for ten minutes before you read the value on the pressure gage.

(4) Refer to the brake-accumulator pressure-gage 2585GM on the brake Yellow-pressure accumulator

2582GM.Make sure that the fill pressure is as follows:

deg. C deg. F "P" bar "P" psi

-40 -40 80 1160

-30 -22 83 1200

-20 -4 87 1260

-10 +14 90 1310

0 +32 93 1350

+10 +50 97 1400

+20 +68 100 1450

+30 +86 104 1510

+40 +104 107 1550

+50 +122 110 1600

+60 +140 114 1650

(a) If the value on the accumulator pressure gage is correct (value "P" plus or minus 50 psi (3.45bar)): No other maintenance is necessary, go to para 5.

(b) If the value on the accumulator pressure gage is more than value "P" plus 50 psi (3.45 bar): Adjust the nitrogen pressure as necessary (Ref. AMM TASK 12-14-32-614-002) .

(c) If the value on the accumulator pressure gage is between value "P" minus 50 psi (3.45 bar) and"P" minus 217.56 psi (15.00 bar). Adjust the nitrogen pressure as necessary (Ref. AMM TASK 12-14-32-614-002) .

(d) If the value on the accumulator pressure gage is less than value "P" minus 217.56 psi (15.00bar):

1 Adjust the nitrogen pressure as necessary (Ref. AMM TASK 12-14-32-614-002) .

2 Pressurize and depressurize the accumulator 2582GM as follows: Pressurize the Yellow hydraulic system with the electric pump

(Ref. AMM TASK 29-24-00-863-001) . In the cockpit, do a check of the brake accumulator pressure on the triple pressure-

indicator 60GG.Let the pressure increase to 3000 psi (206.84 bar) and becomestable.

When the accumulator pressure is stable, stop the electric pump.


16/19






On the brake manifold 3016GM, operate the manual depressurization button on the brakerelief-valve 3067GM to depressurize the accumulator 2582GM.

3 After 20 minutes, do again the check of the value on the accumulator pressure gage.a If the accumulator pressure has the correct value "P" plus or minus 101.53 psi (7.00

bar): No more steps are necessary.

b If the accumulator pressure is more than the correct value "P" plus 101.53 psi (7.00bar): Reduce the accumulator pressure to the correct value "P".

c If the accumulator pressure is less than the correct value "P" minus 101.53psi (7.00 bar), do a leak check with Testing Medium-Leak Detection - OxygenSystem (Material No. 14-CCB6) on: The charging valve 2586GM, and

The accumulator pressure-gage 2585GM, and The adapter at the top end of the accumulator 2582GM.* If you find leaks, do a check of the specified torque value on the applicable nut orconnection where you find a leak.Then, adjust the nitrogen pressure (Ref. AMM TASK 12-14-32-614-002) .* If you cannot stop the leaks, replace the defective equipment(s) as necessary: Replace the accumulator 2582GM and/or its adapter

(Ref. AMM TASK 32-44-11-000-001) and (Ref. AMM TASK 32-44-11-400-001) . Replace the accumulator pressure-gage 2585GM

(Ref. AMM TASK 32-44-14-000-001) and (Ref. AMM TASK 32-44-14-400-001) . Replace the charging valve 2586GM (Ref. AMM TASK 32-44-13-000-001) and

(Ref. AMM TASK 32-44-13-400-001) .* If there are no external leaks: Replace the accumulator 2582GM (Ref. AMM TASK 32-44-11-000-001) and

(Ref. AMM TASK 32-44-11-400-001) .

d If you replace the accumulator, bleed the Yellow hydraulic system(Ref. AMM TASK 29-00-00-870-007) downstream of the engine pump to remove thenitrogen that can be in the hydraulic system (because of the accumulator).

** ON A/C 001-018, 025-025, 027-028, 053-104, 201-500, 513-700

POST SB 32-1215 for A/C 108-109

EMB SB 32-1215 for A/C 251-251

Subtask 32-44-11-210-050-B

A. Check of the Nitrogen Fill Pressure(Ref. Fig. Accumulator Nitrogen Fill-Pressure SHEET 1)

NOTE: If you do this check immediately after the aircraft landing, let the pressure become stable for onehour to get a more accurate value (temperature compensation of the accumulator).

(1) When you do the check of the brake-accumulator nitrogen fill-pressure, record the data on the brake-accumulator nitrogen fill-pressure reporting-sheet to help Airbus continuous monitoring.

** ON A/C ALL

(Ref. Fig. Brake Accumulator Nitrogen Fill Pressure Reporting Sheet SHEET 1)

** ON A/C 001-018, 025-025, 027-028, 053-104, 201-500, 513-700POST SB 32-1215 for A/C 108-109


17/19






EMB SB 32-1215 for A/C 251-251

(2) On the brake manifold 3016GM:

(a) Operate the manual depressurization button on the brake relief valve 3067GM to release thehydraulic pressure in the brake system.

(3) Let the pressure become stable for ten minutes before you read the value on the pressure gage.

(4) Refer to the brake-accumulator pressure-gage 2585GM on the brake Yellow-pressure accumulator2582GM.Make sure that the fill pressure is as follows:

deg. C deg. F "P" bar "P" psi

-40 -40 56 810

-30 -22 59 850-20 -4 61 885

-10 +14 63 914

0 +32 65 943

+10 +50 68 986

+20 +68 70 1015

+30 +86 72 1044

+40 +104 75 1088

+50 +122 77 1117

+60 +140 80 1160

(a) If the value on the accumulator pressure gage is correct (value "P" plus or minus 50 psi (3.45bar)): No other maintenance is necessary, go to para 5.

(b) If the value on the accumulator pressure gage is more than value "P" plus 50 psi (3.45 bar): Adjust the nitrogen pressure as necessary (Ref. AMM TASK 12-14-32-614-002) .

(c) If the value on the accumulator pressure gage is between value "P" minus 50 psi (3.45 bar) and"P" minus 217.56 psi (15.00 bar). Adjust the nitrogen pressure as necessary (Ref. AMM TASK 12-14-32-614-002) .

(d) If the value on the accumulator pressure gage is less than value "P" minus 217.56 psi (15.00bar):

1 Adjust the nitrogen pressure as necessary (Ref. AMM TASK 12-14-32-614-002) .

2 Pressurize and depressurize the accumulator 2582GM as follows: Pressurize the Yellow hydraulic system with the electric pump

(Ref. AMM TASK 29-24-00-863-001) . In the cockpit, do a check of the brake accumulator pressure on the triple pressure-

indicator 60GG.Let the pressure increase to 3000 psi (206.84 bar) and becomestable.

When the accumulator pressure is stable, stop the electric pump. On the brake manifold 3016GM, operate the manual depressurization button on the brake

relief-valve 3067GM to depressurize the accumulator 2582GM.

3 After 20 minutes, do again the check of the value on the accumulator pressure gage.

a If the accumulator pressure has the correct value "P" plus or minus 101.53 psi (7.00bar): No more steps are necessary.


18/19






b If the accumulator pressure is more than the correct value "P" plus 101.53 psi (7.00bar):

Reduce the accumulator pressure to the correct value "P".c If the accumulator pressure is less than the correct value "P" minus 101.53

psi (7.00 bar), do a leak check with Testing Medium-Leak Detection - OxygenSystem (Material No. 14-CCB6) on: The charging valve 2586GM, and The accumulator pressure-gage 2585GM, and The adapter at the top end of the accumulator 2582GM.* If you find leaks, do a check of the specified torque value on the applicable nut orconnection where you find a leak.Then, adjust the nitrogen pressure (Ref. AMM TASK 12-14-32-614-002) .* If you cannot stop the leaks, replace the defective equipment(s) as necessary: Replace the accumulator 2582GM and/or its adapter

(Ref. AMM TASK 32-44-11-000-001) and (Ref. AMM TASK 32-44-11-400-001) . Replace the accumulator pressure-gage 2585GM

(Ref. AMM TASK 32-44-14-000-001) and (Ref. AMM TASK 32-44-14-400-001) . Replace the charging valve 2586GM (Ref. AMM TASK 32-44-13-000-001) and

(Ref. AMM TASK 32-44-13-400-001) .* If there are no external leaks: Replace the accumulator 2582GM (Ref. AMM TASK 32-44-11-000-001) and

(Ref. AMM TASK 32-44-11-400-001) .

d If you replace the accumulator, bleed the Yellow hydraulic system(Ref. AMM TASK 29-00-00-870-007) downstream of the engine pump to remove thenitrogen that can be in the hydraulic system (because of the accumulator).

** ON A/C ALL5. Close-up

Subtask 32-44-11-865-056-A

A. Remove the safety clip(s) and the tag(s) and close this(these) circuit breaker(s):



4GG M36


3GG M35

121VU HYDRAULIC/BRAKING AND STEER-

ING/SYS1/CTL

1GG M34


2GG M33

Subtask 32-44-11-942-053-A

B. Removal of Equipment

(1) Make sure that the work area is clean and clear of tools and other items.

(2) Remove the warning notice(s).

(3) Remove the access platform.

Subtask 32-44-11-410-050-A

C. Close Access(1) Close the main door of the right main landing gear (Ref. AMM TASK 32-12-00-410-001)


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Subtask 32-44-11-862-050-A

D. Aircraft Maintenance Configuration

(1) Put the aircraft back to its initial configuration.

(2) De-energize the Ground Service Network (Ref. AMM TASK 24-42-00-862-001) .Figure 32-44-11-991-00300-A / SHEET 1/1 - Brake Accumulator Nitrogen Fill Pressure Reporting Sheet

** ON A/C 108-200

PRE SB 32-1215 for A/C 108-109

Figure 32-44-11-991-00400-A / SHEET 1/1 - Accumulator Nitrogen Fill-Pressure

** ON A/C 001-018, 025-025, 027-028, 053-104, 201-500, 513-700

POST SB 32-1215 for A/C 108-109

EMB SB 32-1215 for A/C 251-251Figure 32-44-11-991-00400-B / SHEET 1/1 - Accumulator Nitrogen Fill-Pressure

End of document

Documents

Airbus a320 Brake Accu Pnc