WARNING : PUT THE SAFETY DEVICES AND THE WARNING NOTICES IN POSITION BEFORE YOU
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START A TASK ON OR NEAR:
-
THE FLIGHT CONTROLS
-
THE FLIGHT CONTROL SURFACES
-
THE LANDING GEAR AND THE RELATED DOORS
-COMPONENTS THAT MOVE.
1. Reason for the Job
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Self Explanatory
2. Job Set-up Information
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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
No specific access platform 2 m (6 ft. 7 in.)
B. Referenced Information
-------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
29-10-00-864-002 Depressurize the Yellow Hydraulic System 29-23-00-860-001 Disconnection of the Isolation Coupling of the Power Transfer Unit (PTU)
32-12-00-010-001 Open the Main Gear Doors for Access R 32-44-11-200-001 Check Nitrogen Charge Pressure On Parking/Emergency R Accumulator By Reading Gauge
32-44-13-991-001 Fig. 401
1EFF : ALL 1 32-44-13Page 401 1 1 Aug 01/05 1 1 1CES 1 1EFF : ALL 1 32-44-13Page 402 1 1 Aug 01/05 1 1 1CES 1 1EFF : ALL 1 32-44-13Page 403 1 1 Aug 01/05 1 1 1CES 1 Subtask 32-44-13-941-050
3. Job Set-up__________
R **ON A/C 001-049, 051-099, 101-149, 151-199, 201-299, 301-399,
Subtask 32-44-13-860-050
A. Aircraft Maintenance Configuration
(1) Depressurize the Yellow hydraulic system (Ref. TASK 29-10-00-864-002).
(2) Push the pressure release button on the pressure relief valve 3067GM to depressurize the alternate brake system.
(3) Make sure that the pressure on the gauge 2585GM decreases to the fill pressure of the accumulator 2582GM (Ref. TASK 32-44-11-200-001).
R **ON A/C 401-499,
R Subtask 32-44-13-860-050-A
R A. Aircraft Maintenance Configuration
R R (1) Depressurize the Yellow hydraulic system (Ref. TASK 29-10-00-864-002).
R R R (2) Set the Anti-skid and Nose Wheel switch to OFF and: - operate the left and right brake pedals as necessary to release the pressure in the yellow system accumulator.
R R (3) Make sure that the pressure on the gauge 2585GM decreases to the fill pressure of the accumulator 2582GM (Ref. TASK 32-44-11-200-001).
R **ON A/C ALL
Subtask 32-44-13-010-050
B. Get Access
(1) Open the right MLG door (Ref. TASK 32-12-00-010-001).
Subtask 32-44-13-869-050
C. Disconnection of the Isolation Coupling
(1) Disconnect the PTU isolation coupling (Ref. TASK 29-23-00-860-001).
(2) Put the access platform in position.
Subtask 32-44-13-865-050
D. Open, safety and tag this(these) circuit breaker(s):
-------------------------------------------------------------------------------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
R **ON A/C ALL
R R R R R R R R R R R 121VU HYDRAULIC/BRAKING AND STEERING/SYS2/SPLY 121VU HYDRAULIC/BRAKING AND STEERING/SYS2/CTL 121VU HYDRAULIC/BRAKING AND STEERING/SYS1/CTL 121VU HYDRAULIC/BRAKING AND STEERING/SYS1/IND AND/SPLY 121VU HYDRAULIC/PARK BRK/CTL/STBY 121VU HYDRAULIC/PARK BRK/CTL/NORM 121VU HYDRAULIC/HYD POWER/Y 121VU HYDRAULIC/Y HYD/PUMP ENG2/MONG 121VU HYDRAULIC/Y HYD/PUMP ENG2/CTL 123VU Y HYD/ELEC/PUMP 123VU Y HYD/ELEC/ELEC PUMP/NORM 4GG 3GG 1GG 2GG 71GG 70GG 3803GX 3700GD 3701GD 3802GX 3801GX M36 M35 M34 M33 N37 N36 N30 Q37 Q36 AB06 AB03
E. Safety Precautions
(1) Put the warning notices 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.
4. Procedure
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(Ref. Fig. 401/TASK 32-44-13-991-001)
Subtask 32-44-13-020-050
A. Removal of the Carging Valve 2586GM R WARNING : USE THE CORRECT BREATHING EQUIPMENT. THE GAS IS POISONOUS.
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(1) Remove the cap (2) and carefully turn the charging valve (3) to the open position to depressurize the accumulator (1).
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