(6)
 Disconnect the isolation coupling of the Power Transfer Unit (PTU) (Ref. TASK 29-23-00-860-001).

 (7)
 Put the container in position below the solenoid valve to collect hydraulic fluid.

 Subtask 29-23-51-865-052
 B. Open, safety and tag this(these) circuit breaker(s):
 -------------------------------------------------------------------------------PANEL DESIGNATION IDENT. LOCATION -------------------------------------------------------------------------------
121VU HYDRAULIC/SOL VALVES/G/Y/PTU 1801GL N34
R 1EFF : 001-049, 051-058, 101-101, 1 29-23-51Page 412 1 1 May 01/05 1 1 1CES 1

 4. Procedure
_________
 (Ref. Fig. 401/TASK 29-23-51-991-001) Subtask 29-23-51-020-051
 A. Removal of the Solenoid Valve 3012GL
 (1)
 Disconnect the electrical connector (3).

 (2)
 Put blanking caps on the disconnected electrical connectors.

 (3)
 Remove the nut (7), the washer (6), the bolt (4) and the bonding jumper (5) from the solenoid valve (1).

 (4)
 If necessary, cut, remove and discard the lockwire from the bolts (9).

 (5)
 Remove the two bolts (9) and the two washers (8).

 (6)
 Remove the solenoid valve (1) from the manifold (2).

 (7)
 Remove the bobbins (12) (Ref. TASK 20-23-21-911-001).

 (8)
 Install blanking plugs in the open ports of the manifold (2) and the solenoid valve (1).

 (9)
 Remove and discard the square-section seals (13), the O-rings (10) and the back-up rings (14), (15).

R 1EFF : 001-049, 051-058, 101-101, 1 29-23-51Page 413 1 1 May 01/05 1 1 1CES 1 TASK 29-23-51-400-002

 Installation of the Solenoid Valve 3012GL of the Power Transfer Unit
 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 container 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 dia. 0.8 mm
 (0.032 in.)
 Material No. 02-003  F NSA 307110 TYPE 4 HYDRAULIC FLUID (PHOSPHATE ESTER BASE) (Ref. 20-31-00)
 Material No. 09-019  USA AMS 3267/3 LOW ADHESION CORROSION INHIBITING SEALANT (Ref. 20-31-00)
R 1EFF : 001-049, 051-058, 101-101, 1 29-23-51Page 414 1 1 May 01/05 1 1 1CES 1 C. Expendable Parts

 -------------------------------------------------------------------------------FIG.ITEM |DESIGNATION |IPC-CSN -------------------------------------------------------------------------------
9  bolts  29-23-03 01C-150
 10  square-section seals  29-11-15 02A-050
 13  O-rings  29-11-15 02A-020
 14  back-up rings  29-11-15 02A-030
 15  back-up rings  29-11-15 02A-040
 D. Referenced Information

 -------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
20-23-21-911-001 20-28-00-912-004 29-00-00-864-001 29-00-00-910-002 29-10-00-863-002 29-10-00-864-002 29-14-00-614-001 29-14-00-614-002  Removal/Installation of the Bobbins from their Housings and Installation of O-rings, Square Seals, and Back-up Rings on the BobbinsElectrical Bonding of Components With Conductive Bolts and Screws and Bonding Straps in the Fuselage and in the Wings (this does not include the tanks)-Put the Related Hydraulic System in the Depressurized Configuration before Maintenance ActionSafety Procedures of the Hydraulic SystemPressurize the Yellow Hydraulic SystemDepressurize the Yellow Hydraulic SystemDepressurization of the Hydraulic ReservoirsPressurization of the Hydraulic Reservoirs through the Ground Connector
 29-23-00-710-002 29-23-00-860-001 29-23-00-860-002 32-12-00-010-001 32-12-00-410-001  Operational Check of PTU Green to YellowDisconnection of the Isolation Coupling of the Power Transfer Unit (PTU)Connection of the Isolation Coupling of the Power Transfer Unit (PTU)Open the Main Gear Doors for AccessClose the Main Gear Doors after Access
　
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