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REFERENCE DESIGNATION
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R Material No. 02-003D F NSA 307-110 TYPE IV HYDRAULIC FLUID (PHOSPHATE ESTER BASE) (Ref. 20-31-00)
C. Referenced Information
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REFERENCE DESIGNATION
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12-14-29-614-001 Fill the Hydraulic Power Accumulators 1070GM/2070GM/3070GM with Nitrogen 24-41-00-861-002 Energize the Aircraft Electrical Circuits from the External Power 24-41-00-862-002 De-energize the Aircraft Electrical Circuits Supplied from the External Power 29-00-00-864-001 Put the Related Hydraulic System in the Depressurized Configuration before Maintenance Action 29-00-00-870-003 Bleeding Procedure of the Green Hydraulic System Downstream of the Engine Pump 29-00-00-870-007 Bleeding Procedure of the Yellow Hydraulic System Downstream of the Engine Pump 29-00-00-870-008 Bleeding Procedure of the Blue Hydraulic System Upstream of the Blue E-Pump 29-00-00-870-009 Bleeding Procedure of the Blue Hydraulic System
Downstream of the Blue E-Pump 29-00-00-910-002 Safety Procedures of the Hydraulic System 29-10-00-680-001 Drainage of the Reservoir of the Green Hydraulic
System 29-10-00-680-002 Drainage of the Reservoir of the Yellow Hydraulic System 29-10-00-680-003 Drainage of the Reservoir of the Blue Hydraulic System 29-14-00-614-002 Pressurization of the Hydraulic Reservoirs through the Ground Connector 29-24-00-863-001 Pressurize the Yellow Hydraulic System with the
Electric Pump
29-24-00-864-001 Depressurize the Yellow Hydraulic System
32-12-00-010-001 Open the Main Gear Doors for Access
32-12-00-410-001 Close the Main Gear Doors after Access
R 32-44-11-200-001 Check Nitrogen Charge Pressure On Parking/Emergency
R Accumulator By Reading Gauge 12-12-29-991-001 Fig. 301
3. Job Set-up
__________ Subtask 12-12-29-860-051
A. Aircraft Maintenance Configuration
WARNING : OBEY THE HYDRAULIC SAFETY PROCEDURES.
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(1)
Obey the hydraulic safety procedures (Ref. TASK 29-00-00-910-002).
(2)
Make sure that the aircraft is in this configuration:
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the speed brakes and the spoilers are retracted,
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the thrust reversers are stowed (closed),
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the landing gear is extended and the landing gear doors are closed,
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the FWD and AFT cargo-compartment doors 825 and 826 are closed,
-all the other hydraulically controlled systems are in the normal position.
(3)
Make sure that the hydraulic systems are depressurized and put them in the maintenance configuration. (Ref. TASK 29-00-00-864-001).
NOTE : Do not depressurize the system reservoirs.
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(4) Energize the aircraft electrical circuits (Ref. TASK 24-41-00-861-002).
Subtask 12-12-29-010-054
B. Get Access
(1)
Open the left MLG door (Ref. TASK 32-12-00-010-001).
(2)
Open the access panels 197CB, 198CB.
(3)
Put the access platform in position.
Subtask 12-12-29-210-052
C. Inspection of the Pressure Values
(1)
Make sure that the nitrogen fill pressure of the brake accumulator 2582GM is correct (Ref. TASK 32-44-11-200-001).
(2)
Make sure that the hydraulic accumulators 1070GM, 2070GM and 3070GM have a nitrogen pressure of 130 bar (1885.4901 psi) at 20 DEG.C
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