(3)
 Depressurize the reservoir of the Yellow hydraulic system (Ref. TASK 29-14-00-614-001).

 (4)
 Disconnect the isolation coupling of the Power Transfer Unit (PTU) (Ref. TASK 29-23-00-860-001).

 Subtask 27-92-17-941-051
 C. Safety Precautions
 (1)
 Put the warning notices 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.

 (2)
 Put the container in position below the flight control pressure switch to collect hydraulic fluid.

 Subtask 27-92-17-865-051
 D. Open, safety and tag this(these) circuit breaker(s):
 -------------------------------------------------------------------------------
PANEL DESIGNATION IDENT. LOCATION
 -------------------------------------------------------------------------------
49VU FLIGHT CONTROLS/ELAC1/NORM/SPLY 15CE1 B11
 49VU FLIGHT CONTROLS/SEC1/NORM/SPLY 21CE1 B08 R 105VU FLIGHT CONTROLS/ELAC2/STBY SPLY 16CE2 A02 R 105VU FLT CTL/ELAC1/STBY SPLY 16CE1 A01 R
 121VU FLIGHT CONTROLS/ELAC2/NORM/SPLY 15CE2 R20
 4. Procedure
_________
 (Ref. Fig. 401/TASK 27-92-17-991-001)
 Subtask 27-92-17-020-053
 A. Removal of the Flight Control Pressure Switch 10CE3
 (1)
 Disconnect the electrical connector (1).

 (2)
 Put a blanking cap on the disconnected electrical connector (1).

 (3)
 Remove the nut (5), the washer (6), the screw (8), the bonding strap

 (7) and the clamp (9) from the flight control pressure switch (2).

 (4)
 Cut and remove the lockwire.

 (5)
 Loosen the flight control pressure switch (2) and remove it together with the packing (3) from the manifold (4).

 (6)
 Discard the packing.

 (7)
 Install the blanking plugs in the open ports.

 TASK 27-92-17-400-002 Installation of the Flight Control Pressure Switch (10CE3) 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.

 WARNING : OBEY THE HYDRAULIC SAFETY PROCEDURES.
_______
 1.
 Reason for the Job

__________________
 Self Explanatory

 2.
 Job Set-up Information

______________________
 A. Fixtures, Tools, Test and Support Equipment
 -------------------------------------------------------------------------------REFERENCE QTY DESIGNATION -------------------------------------------------------------------------------
No specific container
 No specific warning notices
 No specific Torque Wrench : range 0.20 to 3.60 m.daN

 (2.00 to 26.00 lbf.ft)
 B. Consumable Materials
 -------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
No specific  lockwire, corrosion-resistant steel, 0.8 mm (0.032 in.)
R  Material No. 02-003 F NSA 307110 TYPE 4 HYDRAULIC FLUID (PHOSPHATE ESTER BASE) (Ref. 20-31-00)

 C. Expendable Parts
 -------------------------------------------------------------------------------
FIG.ITEM |DESIGNATION |IPC-CSN
 -------------------------------------------------------------------------------
packing 27-92-03 01 -020
 D. Referenced Information
 -------------------------------------------------------------------------------
REFERENCE DESIGNATION
 -------------------------------------------------------------------------------
R 20-28-00-912-002 Electrical Bonding of Components With Conductive
R Bolts and Screws in the Tanks 27-96-00-710-011 Operational Test after Removal/Installation of the Pressure Switches (10CE1, 10CE2, 10CE3) 29-00-00-910-002 Safety Procedures of the Hydraulic System 29-10-00-863-002 Pressurize the Yellow Hydraulic System 29-10-00-864-002 Depressurize the Yellow Hydraulic System 29-14-00-614-001 Depressurization of the Hydraulic Reservoirs 29-14-00-614-002 Pressurization of the Hydraulic Reservoirs through the Ground Connector 29-23-00-860-001 Disconnection of the Isolation Coupling of the Power Transfer Unit (PTU) 29-23-00-860-002 Connection of the Isolation Coupling of the Power Transfer Unit (PTU) 32-12-00-010-001 Open the Main Gear Doors for Access 32-12-00-410-001 Close the Main Gear Doors after Access 27-92-17-991-001 Fig. 401
　
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