PRESSURE GAGE - ACCUMULATOR AIR, BLUE POWER (2072GM) - REMOVAL/INSTALLATION
___________________________________________________________________________ TASK 29-12-21-000-001 Removal of the Accumulator-Air Pressure Gage (2072GM)
 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 warning notices
 B. Referenced Information
 -------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
29-00-00-864-001 Put the Related Hydraulic System in the Depressurized
 Configuration before Maintenance Action 29-14-00-614-001 Depressurization of the Hydraulic Reservoirs 29-12-21-991-001 Fig. 401
 3. Job Set-up
__________ Subtask 29-12-21-865-050
 A. Open, safety and tag this(these) circuit breaker(s):
 -------------------------------------------------------------------------------PANEL DESIGNATION IDENT. LOCATION -------------------------------------------------------------------------------
49VU HYD/HYD PWR/B WARN/& CTL 2702GJ C12 121VU HYDRAULIC/SOL VALVES/G/Y/B/LEAK/TST 1881GP N35 123VU B HYD/ELEC PUMP 2701GJ AB09 Subtask 29-12-21-860-051

 B. Aircraft Maintenance Configuration
 (1)
 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.

 (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).

 Subtask 29-12-21-010-050
 C. Open the access door 195BB.
 4. Procedure
_________
 (Ref. Fig. 401/TASK 29-12-21-991-001) Subtask 29-12-21-614-051
 A. Depressurization of the Power Accumulator (2072GM)
 (1) Remove the endcap from the charging valve (4).
 (2)
 Turn the nut to the OPEN position and release the nitrogen pressure. Subtask 29-12-21-020-050

 B.
 Removal of the Pressure Gage

 (1)
 Cut, remove and discard the lockwire from the pressure gage (1).

 (2)
 Hold the pressure gage (1) and loosen the nut (2).

 (3)
 Remove the pressure gage (1).

 (4)
 Install blanking plugs on the pressure gage (1) and the adapter (3).

 Pressure Gage
 Figure 401/TASK 29-12-21-991-001
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 TASK 29-12-21-400-001
 Installation of the Accumulator-Air Pressure Gage (2072GM)
 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 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 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. Referenced Information
 -------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
12-12-29-611-001 Fill the Hydraulic Fluid Reservoir with a Hand Pump 12-14-29-614-001 Fill the Hydraulic Power Accumulators 1070GM/2070GM/3070GM with Nitrogen 29-00-00-864-001 Put the Related Hydraulic System in the Depressurized Configuration before Maintenance Action
　
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