4. Procedure
_________ (Ref. Fig. 401/TASK 29-14-17-991-001) Subtask 29-14-17-020-051
 A. Removal of the Air Relief Valve CAUTION : USE A SECOND WRENCH TO APPLY COUNTERTORQUE TO THE UNION WHEN
_______ YOU DISCONNECT/CONNECT HYDRAULIC LINES ON UNIONS. IF YOU USE THE SECOND WRENCH, YOU WILL NOT LOOSEN OR TIGHTEN THE UNION TOO MUCH.
 (1)
 Cut, remove and discard the lockwire.

 (2)
 Hold the air relief valve (2) and disconnect the union nut (1).

 (3)
 Remove the air relief valve (2) and discard the O-ring (3).

 (4)
 Install the blanking plugs on the open connections.

 TASK 29-14-17-400-002
 Installation of the Air Relief Valve of the Blue Hydraulic System (2005GM)
 WARNING : OBEY THE HYDRAULIC SAFETY PROCEDURES.
_______
 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 warning notices
 No specific access platform 2.3 m (7 ft. 7 in.)
 No specific Torque Wrench : range 0.20 to 3.60 m.daN

 (2.00
 to 26.00 lbf.ft) No specific Torque Wrench : range 1.00 to 10.00 m.daN

 (8.00 to 75.00 lbf.ft)

 B.
 Consumable Materials

 -------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
No specific  lockwire 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)
 Material No. 05-004  USA MIL-L-25567 TYPE I
 OXYGEN LEAK DETECTOR (Ref. 20-31-00)

 C. Expendable Parts
 -------------------------------------------------------------------------------
FIG.ITEM |DESIGNATION  |IPC-CSN
 -------------------------------------------------------------------------------
3 O-ring 29-14-04 05A-050 3 O-ring 29-14-04 05C-050 3 O-ring 29-14-04 05D-050
R  3 O-ring 29-14-04 05E-050 3 O-ring 29-14-04 05F-050
 D. 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 29-14-00-614-002 Pressurization of the Hydraulic Reservoirs through
 the Ground Connector
 29-14-17-991-001 Fig. 401

 3. Job Set-up
__________
 Subtask 29-14-17-860-055
 A. Aircraft Maintenance Configuration
 (1)
 Make sure that the warning notices are in position to tell persons not to pressurize the hydraulic system:

 -In the cockpit on the hydraulic section 40VU of the overhead panel,
 -On the ground service panel of the Blue hydraulic system.

 (2)
 Obey the hydraulic safety procedures (Ref. TASK 29-00-00-910-002).

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

 (4)
 Make sure that the reservoir of the Blue hydraulic system is depressurized (Ref. TASK 29-14-00-614-001).

 (5)
 Make sure that the access door 197FB is open.

 (6)
 Make sure that the access platform is in position.

 Subtask 29-14-17-865-054
 B. Make sure that this(these) circuit breaker(s) is(are) open, safetied and tagged
 -------------------------------------------------------------------------------PANEL DESIGNATION IDENT. LOCATION -------------------------------------------------------------------------------
49VU HYD/HYD PWR/B WARN/& CTL 2702GJ C12 121VU HYDRAULIC/LOW/LVL/IND 1832GQ N32 121VU HYDRAULIC/HYD/QTY/IND 1831GQ P35 123VU B HYD/ELEC PUMP 2701GJ AB09
 4. Procedure
_________
 (Ref. Fig. 401/TASK 29-14-17-991-001) Subtask 29-14-17-420-051
 A. Installation of the Air Relief Valve CAUTION : USE A SECOND WRENCH TO APPLY COUNTERTORQUE TO THE UNION WHEN
　
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