C. Referenced Information
-------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
12-14-32-614-002 29-10-00-864-002 29-23-00-860-001 29-23-00-860-002 32-12-00-410-001 32-44-14-991-001 Nitrogen Filling of the Yellow Hydraulic System, Brake Pressure AccumulatorDepressurize the Yellow Hydraulic SystemDisconnection of the Isolation Coupling of the Power Transfer Unit (PTU)Connection of the Isolation Coupling of the Power Transfer Unit (PTU)Close the Main Gear Doors after AccessFig. 401
3. Job Set-up__________
Subtask 32-44-14-860-051
A. Aircraft Maintenance Configuration
(1) Make sure that the PTU isolation coupling is disconnected (Ref. TASK 29-23-00-860-001).
(2) Make sure that the Yellow hydraulic system is depressurized (Ref. TASK 29-10-00-864-002).
Subtask 32-44-14-865-051
B. Make sure that this(these) circuit breaker(s) is(are) open, safetied and tagged
-------------------------------------------------------------------------------PANEL DESIGNATION IDENT. LOCATION -------------------------------------------------------------------------------
R **ON A/C 001-049, 051-099, 101-149, 151-199, 201-299, 301-399,
R 49VU L/G/Y BRK/PRESS/IND 61GG C10
R **ON A/C 401-499,
R 49VU ABCU &/Y BRK/PRESS IND 61GG C10
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-------------------------------------------------------------------------------PANEL DESIGNATION IDENT. LOCATION
-------------------------------------------------------------------------------
R **ON A/C ALL
R 121VU HYDRAULIC/BRAKING AND STEERING/SYS2/SPLY
R 121VU HYDRAULIC/BRAKING AND STEERING/SYS2/CTL
R 121VU HYDRAULIC/BRAKING AND STEERING/SYS1/CTL
R 121VU HYDRAULIC/BRAKING AND STEERING/SYS1/IND AND/SPLY
R 121VU HYDRAULIC/PARK BRK/CTL/STBY
R 121VU HYDRAULIC/PARK BRK/CTL/NORM
R 121VU HYDRAULIC/HYD POWER/Y
R 121VU HYDRAULIC/Y HYD/PUMP ENG2/MONG
R 121VU HYDRAULIC/Y HYD/PUMP ENG2/CTL
R 123VU Y HYD/ELEC/PUMP
R 123VU Y HYD/ELEC/ELEC PUMP/NORM
Subtask 32-44-14-941-051
C. Safety Precautions
4GG M36 3GG M35 1GG M34 2GG M33 71GG N37 70GG N36 3803GX N30 3700GD Q37 3701GD Q36 3802GX AB06 3801GX AB03
(1) Make sure that the warning notices are in position to tell persons not to pressurize the Yellow hydraulic system: - on the panel 40VU in the cockpit, - on the ground service panel of the Yellow hydraulic system.
Subtask 32-44-14-560-050
D. Preparation for Installation
(1)
Clean the component interface and/or the adjacent area.
(2)
Do an inspection of the component interface and/or the adjacent area.
(3)
Make sure that the parts retained from the removed component are clean and in the correct condition.
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4. Procedure
_________
(Ref. Fig. 401/TASK 32-44-14-991-001) Subtask 32-44-14-420-050
A. Installation of the Accumulator Pressure Gage 2585GM
(1)
Remove the blanking plugs.
(2)
Install the gage (6) on the adapter (4).
(3)
TORQUE the nut (5) to between 1.54 and 1.65 m.daN (11.35 and 12.16 lbf.ft).
WARNING : WEAR GOGGLES WHEN YOU REMOVE OR INSTALL THE LOCKWIRE. CUT,
_______ REMOVE AND DISCARD THE LOCKWIRE AS YOU DO THE TASK. LOOSE LOCKWIRE CAN CUT OR BLIND YOU.
(4) Safety the nut (5) with corrosion-resistant steel lockwire 0.8 mm
(0.032 in.) dia.
(5)
Connect the PTU isolation coupling (Ref. TASK 29-23-00-860-002). Subtask 32-44-14-614-050
B.
Fill the accumulator (1) with nitrogen (Ref. TASK 12-14-32-614-002). Subtask 32-44-14-210-051
C. Visual Inspection
(1)
Make sure that there are no leaks.
(2)
Make sure that the pressure in the accumulator is stable.
(3)
Make sure that the cap (2) is installed on the charging valve (3). Subtask 32-44-14-865-052
D. Remove the safety clip(s) and the tag(s) and close this(these) circuit breaker(s): 3700GD, 3701GD, 3801GX, 3802GX, 3803GX, 1GG, 2GG, 3GG, 4GG, 61GG, 70GG, 71GG.
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5. Close-up
________ Subtask 32-44-14-410-050
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