Air-Bus A318 User manual

Customer : CSN
Type : A318/A319/A320/A321
Rev. Date : May 01, 2018
Manual : AMM
Selected applicability : 0054-0054
29-32-12 PB 401 CONF 00 - PRESSURE
SWITCH - SYSTEM - REMOVAL/INSTALLATION
Print Date: July 05, 2018 Page 1 of 19
© AIRBUS S.A.S. ALL RIGHTS RESERVED. CONFIDENTIAL AND PROPRIETARY DOCUMENT.
** ON A/C ALL
29-32-12 PB 401 CONF 00 - PRESSURE SWITCH - SYSTEM - REMOVAL/INSTALLATION
TASK 29-32-12-000-001-A
Removal of the System Pressure Switch
WARNING: MAKE SURE THAT THE TRAVEL RANGES OF THE FLIGHT CONTROL SURFACES ARE
CLEAR BEFORE YOU PRESSURIZE/DEPRESSURIZE A HYDRAULIC SYSTEM.
WARNING: MAKE SURE THAT THE GROUND SAFETY-LOCKS ARE IN POSITION ON THE LANDING
GEAR. THIS WILL PREVENT UNWANTED MOVEMENT OF THE LANDING GEAR, AND THUS
POSSIBLE INJURY TO PERSONS AND DAMAGE TO THE AIRCRAFT AND/OR EQUIPMENT.
FIN : 1151GN
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 3M (10 FT)- ADJUSTABLE
No specific 1 CAP - BLANKING
No specific 1 CONTAINER - HYDRAULIC FLUID RESISTANT
No specific AR PLUG - BLANKING
No specific AR SAFETY CLIP - CIRCUIT BREAKER
No specific 2 WARNING NOTICE(S)
B. Referenced Information
REFERENCE DESIGNATION
(Ref. 29-00-00-864-001-A). Put the Related Hydraulic System in the Depressurized Configuration
before Maintenance Action
(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. 32-12-00-010-001-A). Open the Main Gear Doors for Access
System Pressure Switch of the Green and Yellow Hydraulic Systems SHEET 1

Customer : CSN
Type : A318/A319/A320/A321
Rev. Date : May 01, 2018
Manual : AMM
Selected applicability : 0054-0054
29-32-12 PB 401 CONF 00 - PRESSURE
SWITCH - SYSTEM - REMOVAL/INSTALLATION
Print Date: July 05, 2018 Page 2 of 19
© AIRBUS S.A.S. ALL RIGHTS RESERVED. CONFIDENTIAL AND PROPRIETARY DOCUMENT.
FR44
B
A
C
A
Z147
FR41
FR42
B
B
1
89
7
6
5
23
3151GN
1151GN
4
HP MANIFOLD OF THE
YELLOW HYDRAULIC SYSTEM
SHOWN
196BB
C
N_MM_293212_4_AAS0_01_00
Figure 29-32-12-991-00100-00-D / SHEET 1/1 - System
Pressure Switch of the Green and Yellow Hydraulic Systems
** ON A/C ALL

Customer : CSN
Type : A318/A319/A320/A321
Rev. Date : May 01, 2018
Manual : AMM
Selected applicability : 0054-0054
29-32-12 PB 401 CONF 00 - PRESSURE
SWITCH - SYSTEM - REMOVAL/INSTALLATION
Print Date: July 05, 2018 Page 3 of 19
© AIRBUS S.A.S. ALL RIGHTS RESERVED. CONFIDENTIAL AND PROPRIETARY DOCUMENT.
3. Job Set-up
Subtask 29-32-12-010-050-A
A. Open one main door of the main gear (Ref. AMM TASK 32-12-00-010-001) .
Subtask 29-32-12-865-050-A
B. Open, safety and tag this(these) circuit breaker(s):
PANEL DESIGNATION FIN LOCATION
49VU FLIGHT CONTROLS/ELAC1/NORM/
SPLY 15CE1 B11
105VU FLIGHT CONTROLS/ELAC2/STBY SPLY 16CE2 A02
105VU FLT CTL/ELAC1/STBY SPLY 16CE1 A01
121VU FLIGHT CONTROLS/SEC3/SPLY 21CE3 Q19
121VU FLIGHT CONTROLS/SEC2/SPLY 21CE2 Q18
121VU FLIGHT CONTROLS/ELAC2/NORM/
SPLY 15CE2 R20
Subtask 29-32-12-860-050-A
C. Aircraft Maintenance Configuration
WARNING: OBEY THE HYDRAULIC SAFETY PROCEDURES.
(1) Obey the hydraulic safety procedures (Ref. AMM TASK 29-00-00-910-002) .
(2) Make sure that the Green hydraulic system is depressurized and put it in the maintenance
configuration.
(Ref. AMM TASK 29-00-00-864-001) .
(3) Depressurize the reservoir of the Green hydraulic system (Ref. AMM TASK 29-14-00-614-001) .
(4) Put the WARNING NOTICE(S) in position to tell persons not to pressurize the Green hydraulic
system:
· in the cockpit on the hydraulic section 40VU of the overhead panel,
· on the ground service panel of the Green hydraulic system.
(5) Put the ACCESS PLATFORM 3M (10 FT)- ADJUSTABLE in position at the main door of the main
gear.
(6) Disconnect the isolation coupling of the Power Transfer Unit (PTU) (Ref. AMM TASK 29-23-00-860-
001) .
(7) Put the CONTAINER - HYDRAULIC FLUID RESISTANT in position below the system pressure
switch to collect any hydraulic fluid.
4. Procedure
(Ref. Fig. System Pressure Switch of the Green and Yellow Hydraulic Systems SHEET 1)
Subtask 29-32-12-020-050-A
A. Removal of the System Pressure Switch
(1) Disconnect the electrical connector (1).
(2) Put the CAP - BLANKING on the disconnected electrical connector (1).
(3) Remove the nut (5), the washer (6), the screw (8), the bonding jumper (7) and the clamp (9) from the
system pressure switch (2).
(4) Cut and remove the lockwire.

Customer : CSN
Type : A318/A319/A320/A321
Rev. Date : May 01, 2018
Manual : AMM
Selected applicability : 0054-0054
29-32-12 PB 401 CONF 00 - PRESSURE
SWITCH - SYSTEM - REMOVAL/INSTALLATION
Print Date: July 05, 2018 Page 4 of 19
© AIRBUS S.A.S. ALL RIGHTS RESERVED. CONFIDENTIAL AND PROPRIETARY DOCUMENT.
(5) Loosen the system pressure switch (2) and remove it together with the O-ring (3) from the manifold
(4).
(6) Discard the O-ring.
(7) Install a PLUG - BLANKING in the open ports.
TASK 29-32-12-400-001-A
Installation of the System Pressure Switch
WARNING: MAKE SURE THAT THE TRAVEL RANGES OF THE FLIGHT CONTROL SURFACES ARE
CLEAR BEFORE YOU PRESSURIZE/DEPRESSURIZE A HYDRAULIC SYSTEM.
WARNING: MAKE SURE THAT THE GROUND SAFETY-LOCKS ARE IN POSITION ON THE LANDING
GEAR. THIS WILL PREVENT UNWANTED MOVEMENT OF THE LANDING GEAR, AND THUS
POSSIBLE INJURY TO PERSONS AND DAMAGE TO THE AIRCRAFT AND/OR EQUIPMENT.
FIN : 1151GN
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 3M (10 FT)- ADJUSTABLE
No specific 1 CONTAINER - HYDRAULIC FLUID RESISTANT
No specific 2 WARNING NOTICE(S)
No specific Torque wrench: range to between 3.20 and 3.45 m.daN
(23.60 and 25.44 lbf.ft)
B. Consumable Materials
REFERENCE DESIGNATION
(Material No. 02ABA1) Phosphate Ester Hydraulic Fluid-General Power - -
No specific lockwire, corrosion-resistant steel 0.8 mm (0.032 in.)
C. Expendable Parts
FIG.ITEM DESIGNATION IPC-CSN
3 O-ring 29-32-03-01-070
3 O-ring 29-32-83-01-090
D. Referenced Information
REFERENCE DESIGNATION
(Ref. 20-28-00-912-004-A). Electrical Bonding of Components With Conductive Bolts and Screws
and Bonding Straps in the Fuselage and in the Wings (this does not in-
clude the tanks)
(Ref. 29-00-00-864-001-A). Put the Related Hydraulic System in the Depressurized Configuration
before Maintenance Action

Customer : CSN
Type : A318/A319/A320/A321
Rev. Date : May 01, 2018
Manual : AMM
Selected applicability : 0054-0054
29-32-12 PB 401 CONF 00 - PRESSURE
SWITCH - SYSTEM - REMOVAL/INSTALLATION
Print Date: July 05, 2018 Page 5 of 19
© AIRBUS S.A.S. ALL RIGHTS RESERVED. CONFIDENTIAL AND PROPRIETARY DOCUMENT.
REFERENCE DESIGNATION
(Ref. 29-00-00-910-002-A). Safety Procedures of the Hydraulic System
(Ref. 29-10-00-863-001-A). Pressurize the Green Hydraulic System with a Hydraulic Ground
Power-Cart
(Ref. 29-10-00-864-001-A). Depressurize the Green Hydraulic System
(Ref. 29-14-00-614-001-A). Depressurization of the Hydraulic Reservoirs
(Ref. 29-14-00-614-002-A). Pressurization of the Hydraulic Reservoirs through the Ground Con-
nector
(Ref. 29-14-00-614-002-A-01). Pressurization of the Hydraulic Reservoirs with the Auxiliary Power
Unit (APU)
(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. 29-23-00-863-001-A). Pressurize the Green Hydraulic System from the Yellow Hydraulic Sys-
tem through the PTU with the Electric Pump
(Ref. 29-32-00-710-001-A). Operational Test of the System Pressure Switch , Pressure Transducer
and the associated Indicating System of the Green Hydraulic System
(Ref. 32-12-00-010-001-A). Open the Main Gear Doors for Access
(Ref. 32-12-00-410-001-A). Close the Main Gear Doors after Access
System Pressure Switch of the Green and Yellow Hydraulic Systems SHEET 1
3. Job Set-up
Subtask 29-32-12-860-055-A
A. Aircraft Maintenance Configuration
WARNING: OBEY THE HYDRAULIC SAFETY PROCEDURES.
(1) Obey the hydraulic safety procedures (Ref. AMM TASK 29-00-00-910-002) .
(2) Make sure that the Green hydraulic system is depressurized and put it in the maintenance
configuration.
(Ref. AMM TASK 29-00-00-864-001) .
(3) Make sure that the reservoir of the Green hydraulic system is depressurized
(Ref. AMM TASK 29-14-00-614-001) .
(4) Make sure that the WARNING NOTICE(S) are in position to tell persons not to pressurize the Green
hydraulic system:
· In the cockpit on the hydraulic section 40VU of the overhead panel,
· On the ground service panel of the Green hydraulic system.
(5) Make sure that one main door of the main gear is open (Ref. AMM TASK 32-12-00-010-001) .
(6) Make sure that the ACCESS PLATFORM 3M (10 FT)- ADJUSTABLE is in position at the main door
of the main gear.
(7) Make sure that the isolation coupling of the Power Transfer Unit (PTU) is disconnected
(Ref. AMM TASK 29-23-00-860-001) .
(8) Make sure that the CONTAINER - HYDRAULIC FLUID RESISTANT is in position below the location
of the system pressure switch.
Subtask 29-32-12-865-056-A
B. Make sure that this(these) circuit breaker(s) is(are) open, safetied and tagged:

Customer : CSN
Type : A318/A319/A320/A321
Rev. Date : May 01, 2018
Manual : AMM
Selected applicability : 0054-0054
29-32-12 PB 401 CONF 00 - PRESSURE
SWITCH - SYSTEM - REMOVAL/INSTALLATION
Print Date: July 05, 2018 Page 6 of 19
© AIRBUS S.A.S. ALL RIGHTS RESERVED. CONFIDENTIAL AND PROPRIETARY DOCUMENT.
PANEL DESIGNATION FIN LOCATION
49VU FLIGHT CONTROLS/ELAC1/NORM/
SPLY 15CE1 B11
105VU FLIGHT CONTROLS/ELAC2/STBY SPLY 16CE2 A02
105VU FLT CTL/ELAC1/STBY SPLY 16CE1 A01
121VU FLIGHT CONTROLS/SEC3/SPLY 21CE3 Q19
121VU FLIGHT CONTROLS/SEC2/SPLY 21CE2 Q18
121VU FLIGHT CONTROLS/ELAC2/NORM/
SPLY 15CE2 R20
4. Procedure
(Ref. Fig. System Pressure Switch of the Green and Yellow Hydraulic Systems SHEET 1)
Subtask 29-32-12-420-050-A
A. Installation of the System Pressure Switch
(1) Clean the component interfaces and the adjacent area.
(2) Do an inspection of the component interfaces and the adjacent area.
(3) Lubricate the new IPC -CSN (29-32-03-01-070) O-ring (3) or IPC -CSN (29-32-83-01-090) O-ring (3)
with Phosphate Ester Hydraulic Fluid-General Power - - (Material No. 02ABA1).
(4) Remove the blanking plugs from the ports of the manifold.
(5) Put the new O-ring (3) in position on the system pressure switch (2).
(6) Install the system pressure switch (2) in the manifold (4).
(7) TORQUE the system pressure switch (2) to between 3.20 and 3.45 m.daN (23.60 and 25.44 lbf.ft).
(8) Safety the system pressure switch (2) with lockwire, corrosion-resistant steel 0.8 mm (0.032 in.)
(9) Install the clamp (9), the bonding jumper (7), the screw (8), the washer (6) and the nut (5) at the
system pressure switch (2) (Ref. AMM TASK 20-28-00-912-004) .
(10) Remove the blanking cap from the electrical connector.
(11) Make sure that all the electrical connections are clean and in the correct condition.
(12) Connect the electrical connector (1) to the system pressure switch (2).
Subtask 29-32-12-865-053-A
B. Remove the safety clip(s) and the tag(s) and close this(these) circuit breaker(s):
PANEL DESIGNATION FIN LOCATION
49VU FLIGHT CONTROLS/ELAC1/NORM/
SPLY 15CE1 B11
105VU FLIGHT CONTROLS/ELAC2/STBY SPLY 16CE2 A02
105VU FLT CTL/ELAC1/STBY SPLY 16CE1 A01
121VU FLIGHT CONTROLS/SEC3/SPLY 21CE3 Q19
121VU FLIGHT CONTROLS/SEC2/SPLY 21CE2 Q18
121VU FLIGHT CONTROLS/ELAC2/NORM/
SPLY 15CE2 R20
Subtask 29-32-12-790-050-A
C. Leak Test of the Hydraulic Connections
(1) Pressurize the reservoir of the Green hydraulic system (Ref. AMM TASK 29-14-00-614-002) .

Customer : CSN
Type : A318/A319/A320/A321
Rev. Date : May 01, 2018
Manual : AMM
Selected applicability : 0054-0054
29-32-12 PB 401 CONF 00 - PRESSURE
SWITCH - SYSTEM - REMOVAL/INSTALLATION
Print Date: July 05, 2018 Page 7 of 19
© AIRBUS S.A.S. ALL RIGHTS RESERVED. CONFIDENTIAL AND PROPRIETARY DOCUMENT.
(2) Pressurize the Green hydraulic system (Ref. AMM TASK 29-10-00-863-001) or
(Ref. AMM TASK 29-23-00-863-001) .
(3) Examine the connection of the system pressure switch and make sure that there are no leaks.
(4) Depressurize the Green hydraulic system (Ref. AMM TASK 29-10-00-864-001) .
Subtask 29-32-12-710-050-A
D. Do the operational test of the hydraulic pressure indicating system (Ref. AMM TASK 29-32-00-710-001) .
5. Close-up
Subtask 29-32-12-860-052-A
A. Put the aircraft back to the serviceable condition.
(1) Remove the container.
(2) Connect the isolation coupling of the Power Transfer Unit (PTU) (Ref. AMM TASK 29-23-00-860-
002) .
(3) Remove the access platform(s).
(4) Remove the warning notice(s).
Subtask 29-32-12-410-050-A
B. Close Access
(1) Make sure that the work area is clean and clear of tools and other items.
(2) Close the main door of the main gear (Ref. AMM TASK 32-12-00-410-001) .
TASK 29-32-12-000-002-A
Removal of the System Pressure Switch
WARNING: MAKE SURE THAT THE TRAVEL RANGES OF THE FLIGHT CONTROL SURFACES ARE
CLEAR BEFORE YOU PRESSURIZE/DEPRESSURIZE A HYDRAULIC SYSTEM.
WARNING: MAKE SURE THAT THE GROUND SAFETY-LOCKS ARE IN POSITION ON THE LANDING
GEAR. THIS WILL PREVENT UNWANTED MOVEMENT OF THE LANDING GEAR, AND THUS
POSSIBLE INJURY TO PERSONS AND DAMAGE TO THE AIRCRAFT AND/OR EQUIPMENT.
FIN : 2151GN
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 CAP - BLANKING
No specific 1 CONTAINER - HYDRAULIC FLUID RESISTANT
No specific AR PLUG - BLANKING
No specific AR SAFETY CLIP - CIRCUIT BREAKER
No specific 2 WARNING NOTICE(S)
B. Work Zones and Access Panels

Customer : CSN
Type : A318/A319/A320/A321
Rev. Date : May 01, 2018
Manual : AMM
Selected applicability : 0054-0054
29-32-12 PB 401 CONF 00 - PRESSURE
SWITCH - SYSTEM - REMOVAL/INSTALLATION
Print Date: July 05, 2018 Page 8 of 19
© AIRBUS S.A.S. ALL RIGHTS RESERVED. CONFIDENTIAL AND PROPRIETARY DOCUMENT.
ZONE/ACCESS ZONE DESCRIPTION
195BB
C. Referenced Information
REFERENCE DESIGNATION
(Ref. 29-00-00-864-001-A). Put the Related Hydraulic System in the Depressurized Configuration
before Maintenance Action
(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
System Pressure Switch of the Blue Hydraulic System SHEET 1

Customer : CSN
Type : A318/A319/A320/A321
Rev. Date : May 01, 2018
Manual : AMM
Selected applicability : 0054-0054
29-32-12 PB 401 CONF 00 - PRESSURE
SWITCH - SYSTEM - REMOVAL/INSTALLATION
Print Date: July 05, 2018 Page 9 of 19
© AIRBUS S.A.S. ALL RIGHTS RESERVED. CONFIDENTIAL AND PROPRIETARY DOCUMENT.
A
Z195BB
A
FR41
FR42
B
B
2151GN
3
4
9
5
7
1
2
8
6
7
N_MM_293212_4_ACP0_01_00
Figure 29-32-12-991-00200-00-B / SHEET 1/1 - System Pressure Switch of the Blue Hydraulic System
** ON A/C ALL

Customer : CSN
Type : A318/A319/A320/A321
Rev. Date : May 01, 2018
Manual : AMM
Selected applicability : 0054-0054
29-32-12 PB 401 CONF 00 - PRESSURE
SWITCH - SYSTEM - REMOVAL/INSTALLATION
Print Date: July 05, 2018 Page 10 of 19
© AIRBUS S.A.S. ALL RIGHTS RESERVED. CONFIDENTIAL AND PROPRIETARY DOCUMENT.
3. Job Set-up
Subtask 29-32-12-860-054-A
A. Aircraft Maintenance Configuration
WARNING: OBEY THE HYDRAULIC SAFETY PROCEDURES.
(1) Obey the hydraulic safety procedures (Ref. AMM TASK 29-00-00-910-002) .
(2) Make sure that the Blue hydraulic system is depressurized and put it in the maintenance
configuration.
(Ref. AMM TASK 29-00-00-864-001) .
(3) Depressurize the reservoir of the Blue hydraulic system (Ref. AMM TASK 29-14-00-614-001) .
(4) Put the WARNING NOTICE(S) in position to tell persons not to pressurize the Blue hydraulic system:
· in the cockpit on the hydraulic section 40VU of the overhead panel,
· on the ground service panel of the Blue hydraulic system.
(5) Open the access panel 195BB.
(6) Put the CONTAINER - HYDRAULIC FLUID RESISTANT in position below the system pressure
switch to collect any hydraulic fluid.
Subtask 29-32-12-865-051-A
B. Open, safety and tag this(these) circuit breaker(s):
PANEL DESIGNATION FIN LOCATION
49VU FLIGHT CONTROLS/ELAC1/NORM/
SPLY 15CE1 B11
105VU FLIGHT CONTROLS/ELAC2/STBY SPLY 16CE2 A02
105VU FLT CTL/ELAC1/STBY SPLY 16CE1 A01
121VU FLIGHT CONTROLS/SEC3/SPLY 21CE3 Q19
121VU FLIGHT CONTROLS/SEC2/SPLY 21CE2 Q18
121VU FLIGHT CONTROLS/ELAC2/NORM/
SPLY 15CE2 R20
4. Procedure
(Ref. Fig. System Pressure Switch of the Blue Hydraulic System SHEET 1)
Subtask 29-32-12-020-053-B
A. Removal of the System Pressure Switch
(1) Disconnect the electrical connector (1).
(2) Put the CAP - BLANKING on the disconnected electrical connector (1).
(3) Remove the nut (5), the washer (6), the screw (8), the bonding jumper (7) and the clamp (9) from the
system pressure switch (2).
(4) Cut and remove the lockwire.
(5) Loosen the system pressure switch (2) and remove it together with the O-ring (3) from the manifold
(4).
(6) Discard the O-ring.
(7) Install a PLUG - BLANKING in the open ports.
TASK 29-32-12-400-002-A
Installation of the System Pressure Switch

Customer : CSN
Type : A318/A319/A320/A321
Rev. Date : May 01, 2018
Manual : AMM
Selected applicability : 0054-0054
29-32-12 PB 401 CONF 00 - PRESSURE
SWITCH - SYSTEM - REMOVAL/INSTALLATION
Print Date: July 05, 2018 Page 11 of 19
© AIRBUS S.A.S. ALL RIGHTS RESERVED. CONFIDENTIAL AND PROPRIETARY DOCUMENT.
WARNING: MAKE SURE THAT THE TRAVEL RANGES OF THE FLIGHT CONTROL SURFACES ARE
CLEAR BEFORE YOU PRESSURIZE/DEPRESSURIZE A HYDRAULIC SYSTEM.
WARNING: MAKE SURE THAT THE GROUND SAFETY-LOCKS ARE IN POSITION ON THE LANDING
GEAR. THIS WILL PREVENT UNWANTED MOVEMENT OF THE LANDING GEAR, AND THUS
POSSIBLE INJURY TO PERSONS AND DAMAGE TO THE AIRCRAFT AND/OR EQUIPMENT.
FIN : 2151GN
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 CONTAINER - HYDRAULIC FLUID RESISTANT
No specific 2 WARNING NOTICE(S)
No specific Torque wrench: range to between 3.186 and 3.470 m.daN
(23.50 and 25.59 lbf.ft)
B. Consumable Materials
REFERENCE DESIGNATION
(Material No. 02ABA1) Phosphate Ester Hydraulic Fluid-General Power - -
C. Work Zones and Access Panels
ZONE/ACCESS ZONE DESCRIPTION
195BB
D. Expendable Parts
FIG.ITEM DESIGNATION IPC-CSN
3 O-ring 29-32-03-02-070
3 O-ring 29-32-83-02-100
E. Referenced Information
REFERENCE DESIGNATION
(Ref. 20-28-00-912-004-A). Electrical Bonding of Components With Conductive Bolts and Screws
and Bonding Straps in the Fuselage and in the Wings (this does not in-
clude the tanks)
(Ref. 29-00-00-864-001-A). Put the Related Hydraulic System in the Depressurized Configuration
before Maintenance Action
(Ref. 29-00-00-910-002-A). Safety Procedures of the Hydraulic System
(Ref. 29-10-00-863-003-A). Pressurize the Blue Hydraulic System with a Hydraulic Ground Power-
Cart
(Ref. 29-10-00-863-003-A-01). Pressurize the Blue Hydraulic System with the Blue Electric Pump

Customer : CSN
Type : A318/A319/A320/A321
Rev. Date : May 01, 2018
Manual : AMM
Selected applicability : 0054-0054
29-32-12 PB 401 CONF 00 - PRESSURE
SWITCH - SYSTEM - REMOVAL/INSTALLATION
Print Date: July 05, 2018 Page 12 of 19
© AIRBUS S.A.S. ALL RIGHTS RESERVED. CONFIDENTIAL AND PROPRIETARY DOCUMENT.
REFERENCE DESIGNATION
(Ref. 29-10-00-864-003-A). Depressurize the Blue Hydraulic System
(Ref. 29-14-00-614-001-A). Depressurization of the Hydraulic Reservoirs
(Ref. 29-14-00-614-002-A). Pressurization of the Hydraulic Reservoirs through the Ground Con-
nector
(Ref. 29-14-00-614-002-A-01). Pressurization of the Hydraulic Reservoirs with the Auxiliary Power
Unit (APU)
(Ref. 29-32-00-710-002-A). Operational Test of the Pressure Switches , Pressure Transducer and
the associated Indicating System of the Blue Hydraulic System
System Pressure Switch of the Blue Hydraulic System SHEET 1
3. Job Set-up
Subtask 29-32-12-860-056-A
A. Aircraft Maintenance Configuration
WARNING: OBEY THE HYDRAULIC SAFETY PROCEDURES.
(1) Obey the hydraulic safety procedures (Ref. AMM TASK 29-00-00-910-002) .
(2) Make sure that the Blue hydraulic system is depressurized and put it in the maintenance
configuration.
(Ref. AMM TASK 29-00-00-864-001) .
(3) Make sure that the reservoir of the Blue hydraulic system is depressurized.
(Ref. AMM TASK 29-14-00-614-001) .
(4) Make sure that the WARNING NOTICE(S) are in position:
· In the cockpit on the hydraulic section 40VU of the overhead panel,
· On the ground service panel of the Blue hydraulic system.
(5) Make sure that the access panel 195BB is open.
(6) Make sure that the CONTAINER - HYDRAULIC FLUID RESISTANT is in position below the location
of the system pressure switch.
Subtask 29-32-12-865-057-A
B. Make sure that this(these) circuit breaker(s) is(are) open, safetied and tagged:
PANEL DESIGNATION FIN LOCATION
49VU FLIGHT CONTROLS/ELAC1/NORM/
SPLY 15CE1 B11
105VU FLIGHT CONTROLS/ELAC2/STBY SPLY 16CE2 A02
105VU FLT CTL/ELAC1/STBY SPLY 16CE1 A01
121VU FLIGHT CONTROLS/SEC3/SPLY 21CE3 Q19
121VU FLIGHT CONTROLS/SEC2/SPLY 21CE2 Q18
121VU FLIGHT CONTROLS/ELAC2/NORM/
SPLY 15CE2 R20
4. Procedure
(Ref. Fig. System Pressure Switch of the Blue Hydraulic System SHEET 1)
Subtask 29-32-12-420-053-B
A. Installation of the System Pressure Switch
(1) Clean the component interfaces and the adjacent area.
(2) Do an inspection of the component interfaces and the adjacent area.

Customer : CSN
Type : A318/A319/A320/A321
Rev. Date : May 01, 2018
Manual : AMM
Selected applicability : 0054-0054
29-32-12 PB 401 CONF 00 - PRESSURE
SWITCH - SYSTEM - REMOVAL/INSTALLATION
Print Date: July 05, 2018 Page 13 of 19
© AIRBUS S.A.S. ALL RIGHTS RESERVED. CONFIDENTIAL AND PROPRIETARY DOCUMENT.
(3) Lubricate the new IPC -CSN (29-32-03-02-070) O-ring (3) or IPC -CSN (29-32-83-02-100) O-ring (3)
with Phosphate Ester Hydraulic Fluid-General Power - - (Material No. 02ABA1).
(4) Remove the blanking plugs from the ports of the manifold.
(5) Put the new O-ring (3) in position on the system pressure switch (2).
(6) Install the system pressure switch (2) in the manifold (4) and TORQUE
to between 3.186 and 3.470 m.daN (23.50 and 25.59 lbf.ft).
(7) Safety the system pressure switch (2) with lockwire, corrosion-resistant steel 0.8 mm (0.032 in.).
(8) Install the clamp (9), the bonding jumper (7), the screw (8), the washer (6) and the nut (5) at the
system pressure switch (2) (Ref. AMM TASK 20-28-00-912-004) .
(9) Remove the blanking cap from the electrical connector (1).
(10) Make sure that all the electrical connections are clean and in the correct condition.
(11) Connect the electrical connector (1) to the system pressure switch (2).
Subtask 29-32-12-865-054-A
B. Remove the safety clip(s) and the tag(s) and close this(these) circuit breaker(s):
PANEL DESIGNATION FIN LOCATION
49VU FLIGHT CONTROLS/ELAC1/NORM/
SPLY 15CE1 B11
105VU FLIGHT CONTROLS/ELAC2/STBY SPLY 16CE2 A02
105VU FLT CTL/ELAC1/STBY SPLY 16CE1 A01
121VU FLIGHT CONTROLS/SEC3/SPLY 21CE3 Q19
121VU FLIGHT CONTROLS/SEC2/SPLY 21CE2 Q18
121VU FLIGHT CONTROLS/ELAC2/NORM/
SPLY 15CE2 R20
Subtask 29-32-12-790-051-A
C. Leak Test of the Hydraulic Connections
(1) Pressurize the reservoir of the Blue hydraulic system (Ref. AMM TASK 29-14-00-614-002) .
(2) Pressurize the Blue hydraulic system (Ref. AMM TASK 29-10-00-863-003) .
(3) Examine the connection of the system pressure switch and make sure that there are no leaks.
(4) Depressurize the Blue hydraulic system (Ref. AMM TASK 29-10-00-864-003) .
Subtask 29-32-12-710-051-A
D. Do the operational test of the hydraulic pressure indicating system (Ref. AMM TASK 29-32-00-710-002) .
5. Close-up
Subtask 29-32-12-860-057-A
A. Put the aircraft back to the serviceable condition.
(1) Remove the container.
(2) Remove the warning notice(s).
(3) Make sure that the work area is clean and clear of tools and other items.
(4) Close the access panel 195BB.
TASK 29-32-12-000-003-A
Removal of the System Pressure Switch

Customer : CSN
Type : A318/A319/A320/A321
Rev. Date : May 01, 2018
Manual : AMM
Selected applicability : 0054-0054
29-32-12 PB 401 CONF 00 - PRESSURE
SWITCH - SYSTEM - REMOVAL/INSTALLATION
Print Date: July 05, 2018 Page 14 of 19
© AIRBUS S.A.S. ALL RIGHTS RESERVED. CONFIDENTIAL AND PROPRIETARY DOCUMENT.
WARNING: MAKE SURE THAT THE TRAVEL RANGES OF THE FLIGHT CONTROL SURFACES ARE
CLEAR BEFORE YOU PRESSURIZE/DEPRESSURIZE A HYDRAULIC SYSTEM.
WARNING: MAKE SURE THAT THE GROUND SAFETY-LOCKS ARE IN POSITION ON THE LANDING
GEAR. THIS WILL PREVENT UNWANTED MOVEMENT OF THE LANDING GEAR, AND THUS
POSSIBLE INJURY TO PERSONS AND DAMAGE TO THE AIRCRAFT AND/OR EQUIPMENT.
FIN : 3151GN
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 CAP - BLANKING
No specific 1 CONTAINER - HYDRAULIC FLUID RESISTANT
No specific AR PLUG - BLANKING
No specific AR SAFETY CLIP - CIRCUIT BREAKER
No specific 2 WARNING NOTICE(S)
B. Work Zones and Access Panels
ZONE/ACCESS ZONE DESCRIPTION
196BB
C. Referenced Information
REFERENCE DESIGNATION
(Ref. 29-00-00-864-001-A). Put the Related Hydraulic System in the Depressurized Configuration
before Maintenance Action
(Ref. 29-00-00-910-002-A). Safety Procedures of the Hydraulic System
(Ref. 29-14-00-614-002-A). Pressurization of the Hydraulic Reservoirs through the Ground Con-
nector
(Ref. 29-14-00-614-002-A-01). Pressurization of the Hydraulic Reservoirs with the Auxiliary Power
Unit (APU)
(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
System Pressure Switch of the Green and Yellow Hydraulic Systems SHEET 1
3. Job Set-up
Subtask 29-32-12-010-052-A
A. Get Access
(1) Open one main door of the main gear (Ref. AMM TASK 32-12-00-010-001) .
(2) Open the access panel 196BB.
Subtask 29-32-12-865-052-A

Customer : CSN
Type : A318/A319/A320/A321
Rev. Date : May 01, 2018
Manual : AMM
Selected applicability : 0054-0054
29-32-12 PB 401 CONF 00 - PRESSURE
SWITCH - SYSTEM - REMOVAL/INSTALLATION
Print Date: July 05, 2018 Page 15 of 19
© AIRBUS S.A.S. ALL RIGHTS RESERVED. CONFIDENTIAL AND PROPRIETARY DOCUMENT.
B. Open, safety and tag this(these) circuit breaker(s):
PANEL DESIGNATION FIN LOCATION
49VU FLIGHT CONTROLS/ELAC1/NORM/
SPLY 15CE1 B11
105VU FLIGHT CONTROLS/ELAC2/STBY SPLY 16CE2 A02
105VU FLT CTL/ELAC1/STBY SPLY 16CE1 A01
121VU FLIGHT CONTROLS/SEC3/SPLY 21CE3 Q19
121VU FLIGHT CONTROLS/SEC2/SPLY 21CE2 Q18
121VU FLIGHT CONTROLS/ELAC2/NORM/
SPLY 15CE2 R20
Subtask 29-32-12-860-051-A
C. Aircraft Maintenance Configuration
WARNING: OBEY THE HYDRAULIC SAFETY PROCEDURES.
(1) Obey the hydraulic safety procedures (Ref. AMM TASK 29-00-00-910-002) .
(2) Make sure that the Yellow hydraulic system is depressurized and put it in the maintenance
configuration.
(Ref. AMM TASK 29-00-00-864-001) .
(3) Depressurize the reservoir of the Yellow hydraulic system (Ref. AMM TASK 29-14-00-614-002) .
(4) Put the WARNING NOTICE(S) in position to tell persons not to pressurize the Yellow hydraulic
system:
· in the cockpit on the hydraulic section 40VU of the overhead panel,
· on the ground service panel of the Yellow hydraulic system.
(5) Disconnect the isolation coupling of the Power Transfer Unit (PTU) (Ref. AMM TASK 29-23-00-860-
001) .
(6) Put the CONTAINER - HYDRAULIC FLUID RESISTANT in position below the system pressure
switch to collect any hydraulic fluid.
4. Procedure
(Ref. Fig. System Pressure Switch of the Green and Yellow Hydraulic Systems SHEET 1)
Subtask 29-32-12-020-054-B
A. Removal of the System Pressure Switch
(1) Disconnect the electrical connector (1).
(2) Put the CAP - BLANKING on the disconnected electrical connector (1).
(3) Remove the nut (5), the washer (6), the screw (8), the bonding jumper (7) and the clamp (9) from the
system pressure switch (2).
(4) Cut and remove the lockwire.
(5) Loosen the system pressure switch (2) and remove it together with the O-ring (3) from the manifold
(4).
(6) Discard the O-ring.
(7) Install a PLUG - BLANKING in the open ports.
TASK 29-32-12-400-003-A
Installation of the System Pressure Switch

Customer : CSN
Type : A318/A319/A320/A321
Rev. Date : May 01, 2018
Manual : AMM
Selected applicability : 0054-0054
29-32-12 PB 401 CONF 00 - PRESSURE
SWITCH - SYSTEM - REMOVAL/INSTALLATION
Print Date: July 05, 2018 Page 16 of 19
© AIRBUS S.A.S. ALL RIGHTS RESERVED. CONFIDENTIAL AND PROPRIETARY DOCUMENT.
WARNING: MAKE SURE THAT THE TRAVEL RANGES OF THE FLIGHT CONTROL SURFACES ARE
CLEAR BEFORE YOU PRESSURIZE/DEPRESSURIZE A HYDRAULIC SYSTEM.
WARNING: MAKE SURE THAT THE GROUND SAFETY-LOCKS ARE IN POSITION ON THE LANDING
GEAR. THIS WILL PREVENT UNWANTED MOVEMENT OF THE LANDING GEAR, AND THUS
POSSIBLE INJURY TO PERSONS AND DAMAGE TO THE AIRCRAFT AND/OR EQUIPMENT.
FIN : 3151GN
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 CONTAINER - HYDRAULIC FLUID RESISTANT
No specific 2 WARNING NOTICE(S)
No specific Torque wrench: range to between 3.186 and 3.470 m.daN
(23.50 and 25.59 lbf.ft)
B. Consumable Materials
REFERENCE DESIGNATION
(Material No. 02ABA1) Phosphate Ester Hydraulic Fluid-General Power - -
C. Work Zones and Access Panels
ZONE/ACCESS ZONE DESCRIPTION
196BB
D. Expendable Parts
FIG.ITEM DESIGNATION IPC-CSN
3 O-ring 29-32-03-03-070
3 O-ring 29-32-83-03-100
E. Referenced Information
REFERENCE DESIGNATION
(Ref. 20-28-00-912-004-A). Electrical Bonding of Components With Conductive Bolts and Screws
and Bonding Straps in the Fuselage and in the Wings (this does not in-
clude the tanks)
(Ref. 29-00-00-864-001-A). Put the Related Hydraulic System in the Depressurized Configuration
before Maintenance Action
(Ref. 29-00-00-910-002-A). Safety Procedures of the Hydraulic System
(Ref. 29-10-00-863-002-A). Pressurize the Yellow Hydraulic System with a Hydraulic Ground
Power-Cart
(Ref. 29-10-00-864-002-A). Depressurize the Yellow Hydraulic System

Customer : CSN
Type : A318/A319/A320/A321
Rev. Date : May 01, 2018
Manual : AMM
Selected applicability : 0054-0054
29-32-12 PB 401 CONF 00 - PRESSURE
SWITCH - SYSTEM - REMOVAL/INSTALLATION
Print Date: July 05, 2018 Page 17 of 19
© AIRBUS S.A.S. ALL RIGHTS RESERVED. CONFIDENTIAL AND PROPRIETARY DOCUMENT.
REFERENCE DESIGNATION
(Ref. 29-14-00-614-001-A). Depressurization of the Hydraulic Reservoirs
(Ref. 29-14-00-614-002-A). Pressurization of the Hydraulic Reservoirs through the Ground Con-
nector
(Ref. 29-14-00-614-002-A-01). Pressurization of the Hydraulic Reservoirs with the Auxiliary Power
Unit (APU)
(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. 29-32-00-710-003-A). Operational Test of the System Pressure Switch , Pressure Transducer
and the associated Indicating System of the Yellow Hydraulic System
(Ref. 32-12-00-010-001-A). Open the Main Gear Doors for Access
(Ref. 32-12-00-410-001-A). Close the Main Gear Doors after Access
System Pressure Switch of the Green and Yellow Hydraulic Systems SHEET 1
3. Job Set-up
Subtask 29-32-12-860-058-A
A. Aircraft Maintenance Configuration
WARNING: OBEY THE HYDRAULIC SAFETY PROCEDURES.
(1) Obey the hydraulic safety procedures (Ref. AMM TASK 29-00-00-910-002) .
(2) Make sure that the Yellow hydraulic system is depressurized and put it in the maintenance
configuration.
(Ref. AMM TASK 29-00-00-864-001) .
(3) Make sure that the reservoir of the Yellow hydraulic system is depressurized.
(Ref. AMM TASK 29-14-00-614-001) .
(4) Make sure that the WARNING NOTICE(S) are in position to tell persons not to pressurize the Yellow
hydraulic system:
· In the cockpit on the hydraulic section 40VU of the overhead panel,
· On the ground service panel of the Yellow hydraulic system.
(5) Make sure that one main door of the main gear is open (Ref. AMM TASK 32-12-00-010-001) .
(6) Make sure that the access panel 196BB is open.
(7) Make sure that the isolation coupling of the Power Transfer Unit (PTU) is disconnected
(Ref. AMM TASK 29-23-00-860-001) .
(8) Make sure that the CONTAINER - HYDRAULIC FLUID RESISTANT is in position below the location
of the system pressure switch.
Subtask 29-32-12-865-058-A
B. Make sure that this(these) circuit breaker(s) is(are) open, safetied and tagged:
PANEL DESIGNATION FIN LOCATION
49VU FLIGHT CONTROLS/ELAC1/NORM/
SPLY 15CE1 B11
105VU FLIGHT CONTROLS/ELAC2/STBY SPLY 16CE2 A02
105VU FLT CTL/ELAC1/STBY SPLY 16CE1 A01
121VU FLIGHT CONTROLS/SEC3/SPLY 21CE3 Q19
121VU FLIGHT CONTROLS/SEC2/SPLY 21CE2 Q18

Customer : CSN
Type : A318/A319/A320/A321
Rev. Date : May 01, 2018
Manual : AMM
Selected applicability : 0054-0054
29-32-12 PB 401 CONF 00 - PRESSURE
SWITCH - SYSTEM - REMOVAL/INSTALLATION
Print Date: July 05, 2018 Page 18 of 19
© AIRBUS S.A.S. ALL RIGHTS RESERVED. CONFIDENTIAL AND PROPRIETARY DOCUMENT.
PANEL DESIGNATION FIN LOCATION
121VU FLIGHT CONTROLS/ELAC2/NORM/
SPLY 15CE2 R20
4. Procedure
(Ref. Fig. System Pressure Switch of the Green and Yellow Hydraulic Systems SHEET 1)
Subtask 29-32-12-420-054-B
A. Installation of the Pressure Switch
(1) Clean the component interfaces and the adjacent area.
(2) Do an inspection of the component interfaces and the adjacent area.
(3) Remove the blanking plugs from the ports of the manifold.
(4) Lubricate the new IPC -CSN (29-32-03-03-070) O-ring (3) or IPC -CSN (29-32-83-03-100) O-ring (3)
with Phosphate Ester Hydraulic Fluid-General Power - - (Material No. 02ABA1).
(5) Put the new O-ring (3) in position on the system pressure switch (2).
(6) Install the system pressure switch (2) in the manifold (4) and TORQUE
to between 3.186 and 3.470 m.daN (23.50 and 25.59 lbf.ft).
(7) Safety the system pressure switch (2) with lockwire, corrosion-resistant steel 0.8 mm (0.032 in.).
(8) Install the clamp (9), the bonding jumper (7), the screw (8), the washer (6) and the nut (5) at the
system pressure switch (2) (Ref. AMM TASK 20-28-00-912-004) .
(9) Remove the blanking cap from the electrical connector (1).
(10) Make sure that all the electrical connections are clean and in the correct condition.
(11) Connect the electrical connector (1) to the system pressure switch (2).
Subtask 29-32-12-865-055-A
B. Remove the safety clip(s) and the tag(s) and close this(these) circuit breaker(s):
PANEL DESIGNATION FIN LOCATION
49VU FLIGHT CONTROLS/ELAC1/NORM/
SPLY 15CE1 B11
105VU FLIGHT CONTROLS/ELAC2/STBY SPLY 16CE2 A02
105VU FLT CTL/ELAC1/STBY SPLY 16CE1 A01
121VU FLIGHT CONTROLS/SEC3/SPLY 21CE3 Q19
121VU FLIGHT CONTROLS/SEC2/SPLY 21CE2 Q18
121VU FLIGHT CONTROLS/ELAC2/NORM/
SPLY 15CE2 R20
Subtask 29-32-12-790-052-A
C. Leak Test of the Hydraulic Connections
(1) Pressurize the reservoir of the Yellow hydraulic system (Ref. AMM TASK 29-14-00-614-002) .
(2) Pressurize the Yellow hydraulic system (Ref. AMM TASK 29-10-00-863-002) .
(3) Examine the connection of the system pressure switch and make sure that there are no leaks.
(4) Depressurize the Yellow hydraulic system (Ref. AMM TASK 29-10-00-864-002) .
Subtask 29-32-12-710-052-A
D. Do the operational test of the hydraulic pressure indicating system (Ref. AMM TASK 29-32-00-710-003) .
5. Close-up

Customer : CSN
Type : A318/A319/A320/A321
Rev. Date : May 01, 2018
Manual : AMM
Selected applicability : 0054-0054
29-32-12 PB 401 CONF 00 - PRESSURE
SWITCH - SYSTEM - REMOVAL/INSTALLATION
Print Date: July 05, 2018 Page 19 of 19
© AIRBUS S.A.S. ALL RIGHTS RESERVED. CONFIDENTIAL AND PROPRIETARY DOCUMENT.
Subtask 29-32-12-860-053-A
A. Put the aircraft back to the serviceable condition.
(1) Remove the container.
(2) Connect the isolation coupling of the Power Transfer Unit (PTU) (Ref. AMM TASK 29-23-00-860-
002) .
(3) Remove the warning notice(s).
Subtask 29-32-12-410-052-A
B. Close Access
(1) Make sure that the work area is clean and clear of tools and other items.
(2) Close the main door of the main gear (Ref. AMM TASK 32-12-00-410-001) .
(3) Close the access panel 196BB.
Figure 29-32-12-991-00100-00-D / SHEET 1/1 - System Pressure Switch of the Green and Yellow Hydraulic
Systems
Figure 29-32-12-991-00200-00-B / SHEET 1/1 - System Pressure Switch of the Blue Hydraulic System
End of document