Airbus 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

Airbus A318 Specifications

General

Manufacturer	Airbus
Model	A318
Length	31.44 m (103 ft 2 in)
Height	12.56 m (41 ft 2 in)
Cabin Width	3.70 m (12 ft 2 in)
Service Ceiling	12, 500 m (41, 000 ft)
Crew	2
Range	3, 100 nautical miles
Wingspan	34.10 m (111 ft 11 in)
Cruise Speed	Mach 0.78
Engines	2 × CFM International CFM56-5 or Pratt & Whitney PW6000
Empty Weight	39, 500 kg (87, 100 lb)
Max Takeoff Weight	68, 000 kg (149, 900 lb)

Summary

Reason for the Job

Job Set-up Information

Fixtures, Tools, Test and Support Equipment

Lists necessary tools and equipment for the task.

Referenced Information

Lists related procedures and documentation for reference.

Job Set-up

Aircraft Maintenance Configuration

Details the necessary preparation steps for aircraft maintenance.

Procedure

Removal of the System Pressure Switch

Step-by-step guide for removing the system pressure switch.

Reason for the Job

Job Set-up Information

Fixtures, Tools, Test and Support Equipment

Lists necessary tools and equipment for the installation task.

Consumable Materials

Lists materials like hydraulic fluid and lockwire required for the task.

Expendable Parts

Lists specific parts like O-rings needed for the installation.

Referenced Information

Lists related procedures and documentation for reference.

Job Set-up

Aircraft Maintenance Configuration

Details preparation steps for aircraft maintenance for installation.

Circuit Breakers

Instructions to open, safety, and tag circuit breakers before maintenance.

Procedure

Procedure

Installation of the System Pressure Switch

Step-by-step guide for installing the system pressure switch.

Circuit Breakers

Instructions to remove safety clips and close circuit breakers after maintenance.

Leak Test of the Hydraulic Connections

Procedure to perform a leak test on hydraulic connections.

Procedure

Operational Test

Performing an operational test of the hydraulic pressure indicating system.

Close-up

Serviceable Condition

Steps to return the aircraft to a serviceable condition after the task.

Close Access

Steps to close access panels and doors after maintenance.

Referenced Information

System Pressure Switch of the Blue Hydraulic System SHEET 1

Reference to diagrams for the Blue Hydraulic System.

Safety Procedures of the Hydraulic System

General safety procedures for hydraulic systems.

Depressurization of the Hydraulic Reservoirs

Procedure for depressurizing hydraulic reservoirs.

Put the Related Hydraulic System in the Depressurized Configuration before Maintenance Action

Steps to depressurize the hydraulic system before maintenance.

Job Set-up

Aircraft Maintenance Configuration

Details preparation steps for aircraft maintenance for the Blue system.

Circuit Breakers

Instructions to open, safety, and tag circuit breakers for the Blue system.

Procedure

Removal of the System Pressure Switch

Step-by-step guide for removing the system pressure switch for the Blue system.

Reason for the Job

Job Set-up Information

Fixtures, Tools, Test and Support Equipment

Lists necessary tools and equipment for the Blue system task.

Consumable Materials

Lists materials like hydraulic fluid for the Blue system task.

Work Zones and Access Panels

Identifies work zones and access panels for the Blue system task.

Expendable Parts

Lists specific parts like O-rings for the Blue system installation.

Referenced Information

Lists related procedures and documentation for the Blue system task.

Referenced Information

System Pressure Switch of the Blue Hydraulic System SHEET 1

Reference to diagrams for the Blue Hydraulic System.

Depressurize the Blue Hydraulic System

Procedure to depressurize the Blue hydraulic system.

Depressurization of the Hydraulic Reservoirs

Procedure for depressurizing hydraulic reservoirs.

Pressurization of the Hydraulic Reservoirs through the Ground Connector

Procedure for pressurizing hydraulic reservoirs via ground connector.

Pressurization of the Hydraulic Reservoirs with the Auxiliary Power Unit (APU)

Procedure for pressurizing hydraulic reservoirs with APU.

Operational Test of the Pressure Switches, Pressure Transducer and the associated Indicating System of the Blue Hydraulic System

Operational test for Blue Hydraulic System pressure indicators.

Job Set-up

Circuit Breakers

Instructions to remove safety clips and close circuit breakers for Blue system.

Procedure

Installation of the System Pressure Switch

Step-by-step guide for installing the system pressure switch for Blue system.

Leak Test of the Hydraulic Connections

Procedure to perform a leak test on Blue hydraulic connections.

Operational Test of the hydraulic pressure indicating system

Performing an operational test for Blue hydraulic pressure indicators.

Close-up

Serviceable Condition

Steps to return the aircraft to a serviceable condition after Blue system task.

Referenced Information

System Pressure Switch of the Green and Yellow Hydraulic Systems SHEET 1

Reference to diagrams for Green/Yellow Hydraulic Systems.

Put the Related Hydraulic System in the Depressurized Configuration before Maintenance Action

Steps to depressurize the hydraulic system before maintenance.

Pressurization of the Hydraulic Reservoirs through the Ground Connector

Procedure for pressurizing hydraulic reservoirs via ground connector.

Pressurization of the Hydraulic Reservoirs with the Auxiliary Power Unit (APU)

Procedure for pressurizing hydraulic reservoirs with APU.

Disconnection of the Isolation Coupling of the Power Transfer Unit (PTU)

Procedure to disconnect the PTU isolation coupling.

Open the Main Gear Doors for Access

Procedure to open main gear doors for access.

Job Set-up

Circuit Breakers

Instructions to open, safety, and tag circuit breakers for the Yellow system.

Aircraft Maintenance Configuration

Details preparation steps for aircraft maintenance for the Yellow system.

Procedure

Removal of the System Pressure Switch

Step-by-step guide for removing the system pressure switch for the Yellow system.

Reason for the Job

Job Set-up Information

Fixtures, Tools, Test and Support Equipment

Lists necessary tools and equipment for the Yellow system task.

Consumable Materials

Lists materials like hydraulic fluid for the Yellow system task.

Work Zones and Access Panels

Identifies work zones and access panels for the Yellow system task.

Expendable Parts

Lists specific parts like O-rings for the Yellow system installation.

Referenced Information

Lists related procedures and documentation for the Yellow system task.

Referenced Information

System Pressure Switch of the Green and Yellow Hydraulic Systems SHEET 1

Reference to diagrams for Green/Yellow Hydraulic Systems.

Depressurization of the Hydraulic Reservoirs

Procedure for depressurizing hydraulic reservoirs.

Pressurization of the Hydraulic Reservoirs through the Ground Connector

Procedure for pressurizing hydraulic reservoirs via ground connector.

Pressurization of the Hydraulic Reservoirs with the Auxiliary Power Unit (APU)

Procedure for pressurizing hydraulic reservoirs with APU.

Disconnection of the Isolation Coupling of the Power Transfer Unit (PTU)

Procedure to disconnect the PTU isolation coupling.

Connection of the Isolation Coupling of the Power Transfer Unit (PTU)

Procedure to connect the PTU isolation coupling.

Operational Test of the System Pressure Switch, Pressure Transducer and the associated Indicating System of the Yellow Hydraulic System

Operational test for Yellow Hydraulic System pressure indicators.

Open the Main Gear Doors for Access

Procedure to open main gear doors for access.

Close the Main Gear Doors after Access

Procedure to close main gear doors after access.

Job Set-up

Installation of the Pressure Switch

Step-by-step guide for installing the pressure switch.

Circuit Breakers

Instructions to remove safety clips and close circuit breakers for Yellow system.

Procedure

Leak Test of the Hydraulic Connections

Procedure to perform a leak test on Yellow hydraulic connections.

Operational Test of the hydraulic pressure indicating system

Performing an operational test for Yellow hydraulic pressure indicators.

Close-up

Serviceable Condition

Steps to return the aircraft to a serviceable condition.

Close Access

Steps to close access panels and doors after maintenance.