(2)
Connect the isolation coupling of the Power Transfer Unit (PTU) (Ref. TASK 29-23-00-860-002).
(3)
Remove the access platform(s).
(4)
Remove the warning notice(s). Subtask 29-32-12-410-050
B.
Close Access
(1)
Make sure that the work area is clean and clear of tool(s) and other items.
(2)
Close the main door of the main gear (Ref. TASK 32-12-00-410-001).
TASK 29-32-12-000-002 Removal of the System Pressure Switch (2151GN) 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.
1.
Reason for the Job
__________________
Self Explanatory
2.
Job Set-up Information
______________________
A. Fixtures, Tools, Test and Support Equipment
-------------------------------------------------------------------------------REFERENCE QTY DESIGNATION -------------------------------------------------------------------------------
No specific blanking plugs No specific circuit breaker(s) safety clip(s) No specific container No specific warning notices
B. Referenced Information
-------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
29-00-00-864-001 Put the Related Hydraulic System in the Depressurized
Configuration before Maintenance Action 29-00-00-910-002 Safety Procedures of the Hydraulic System 29-14-00-614-001 Depressurization of the Hydraulic Reservoirs 29-32-12-991-002 Fig. 402
3. Job Set-up
__________
Subtask 29-32-12-860-054
A. Aircraft Maintenance Configuration
WARNING : OBEY THE HYDRAULIC SAFETY PROCEDURES.
_______
(1)
Obey the hydraulic safety procedures (Ref. TASK 29-00-00-910-002).
(2)
Make sure that the Blue hydraulic system is depressurized and put it in the maintenance configuration. (Ref. TASK 29-00-00-864-001).
(3)
Depressurize the reservoir of the Blue hydraulic system (Ref. TASK 29-14-00-614-001).
(4)
Put the warning notices 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 in position below the system pressure switch to collect any hydraulic fluid.
Subtask 29-32-12-865-051
B. Open, safety and tag this(these) circuit breaker(s):
-------------------------------------------------------------------------------PANEL DESIGNATION IDENT. LOCATION -------------------------------------------------------------------------------
49VU FLIGHT CONTROLS/ELAC1/NORM/SPLY 15CE1 B11 R 105VU FLIGHT CONTROLS/ELAC2/STBY SPLY 16CE2 A02 R 105VU FLT CTL/ELAC1/STBY SPLY 16CE1 A01 R
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. 402/TASK 29-32-12-991-002) Subtask 29-32-12-020-053
A. Removal of the System Pressure Switch
(1)
Disconnect the electrical connector (1).
(2)
Put the blanking cap 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 the blanking plugs in the open ports.
System Pressure Switch of the Blue Hydraulic System
Figure 402/TASK 29-32-12-991-002
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TASK 29-32-12-400-002 Installation of the System Pressure Switch (2151GN) WARNING : MAKE SURE THAT THE TRAVEL RANGES OF THE FLIGHT CONTROL SURFACES ARE
_______
CLEAR BEFORE YOU PRESSURIZE/DEPRESSURIZE A HYDRAULIC SYSTEM.
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