-in the cockpit on the hydraulic section 40VU of the overhead panel, - on the ground service panel of the Yellow hydraulic system.

 (3)
 Make sure that the Yellow hydraulic system is depressurized and put it in the maintenance configuration. (Ref. TASK 29-00-00-864-001).

 (4)
 Depressurize the reservoir of the Yellow hydraulic system (Ref. TASK 29-14-00-614-001).

 (5)
 Put the container below the HP manifold of the Yellow hydraulic system.

 (6)
 Disconnect the isolation coupling of the power transfer unit (PTU) (Ref. TASK 29-23-00-860-001).

 4. Procedure
_________
 **ON A/C 001-049, 051-058, 101-101,

 (Ref. Fig. 401/TASK 29-13-32-991-001) R **ON A/C 059-099, 102-149, 151-199, 201-299, 301-399, 401-499,
 (Ref. Fig. 401A/TASK 29-13-32-991-001-B)
 **ON A/C ALL

 Subtask 29-13-32-020-051
 A. Removal of the Pressure Relief Valve
 (1)
 Remove the nut (6), the bolt (9) and the washer (8) and disconnect the bonding jumper (7).

 (2)
 Hold the pressure relief valve (1) and remove the bolts (2) and the washers (3).

 (3)
 Remove the pressure relief valve (1).

 (4)
 Remove the bobbins (5) (Ref. TASK 20-23-21-911-001).

 (5)
 Install the blanking plugs in the HP manifold and in the ports of the pressure relief valve (1).

 Pressure Relief Valve
 Figure 401/TASK 29-13-32-991-001

R 1EFF : 001-049, 051-058, 101-101, 1 29-13-32Page 404 1 1 May 01/05 1 1 1CES 1

 Pressure Relief Valve Figure 401A/TASK 29-13-32-991-001-B
R 1EFF : 059-099, 102-149, 151-199, 201-299, 1 29-13-32Page 405 1301-399, 401-499, 1Aug 01/05 1 1 1CES 1 TASK 29-13-32-400-001

 Installation of the Pressure Relief Valve of the Yellow Hydraulic System
 (3063GM)

 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 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 -------------------------------------------------------------------------------
R Material No. 02-003  F NSA 307110 TYPE 4 HYDRAULIC FLUID (PHOSPHATE ESTER BASE) (Ref. 20-31-00)
 Material No. 09-013  USA MIL-PRF-81733 TYPE I CLASS A
 CORROSION INHIBITING BRUSH CONSISTENCY
 (Ref. 20-31-00)

 Material No. 16-003  F ASNB70720
 COATING (OBSOLETE USE 16-021) (Ref. 20-31-00)

 C. Expendable Parts
 -------------------------------------------------------------------------------
FIG.ITEM |DESIGNATION  |IPC-CSN
 -------------------------------------------------------------------------------
4 back-up rings 29-13-14 02 -110 4 back-up rings 29-13-14 02A-150 10 square-section seals 29-13-14 02 -130 10 square-section seals 29-13-14 02A-170 11 back-up rings 29-13-14 02 -120 11 back-up rings 29-13-14 02A-160 12 O-rings 29-13-14 02 -100 12 O-rings 29-13-14 02A-140
 D. Referenced Information
 -------------------------------------------------------------------------------
REFERENCE  DESIGNATION
 -------------------------------------------------------------------------------
12-12-29-611-001 Fill the Hydraulic Fluid Reservoir with a Hand Pump 12-12-29-611-002 Fill the Hydraulic Fluid Reservoir with a Hydraulic Service Cart
 20-23-21-911-001  Removal/Installation of the Bobbins from their Housings and Installation of O-rings, Square Seals, and Back-up Rings on the Bobbins
 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 29-10-00-863-002 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)
　
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