B. Referenced Information
-------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
12-12-29-611-001 24-41-00-861-002
24-41-00-862-002
29-00-00-910-002 29-10-00-680-002
29-10-00-864-002 29-13-36-000-001
29-13-36-400-001
29-14-00-614-002
32-12-00-010-001 32-12-00-410-001 32-43-00-870-002
71-13-00-010-040 71-13-00-410-040 78-31-00-710-040 12-36-29-991-015
3. Job Set-up
__________ Subtask 12-36-29-860-103
A. Safety Precautions
Fill the Hydraulic Fluid Reservoir with a Hand PumpEnergize the Aircraft Electrical Circuits from the External PowerDe-energize the Aircraft Electrical Circuits Supplied from the External PowerSafety Procedures of the Hydraulic SystemDrainage of the Reservoir of the Yellow Hydraulic SystemDepressurize the Yellow Hydraulic SystemRemoval of the Engine 2 Yellow Hydraulic Pump Delivery Check Valve (3050GM).Installation of the Engine 2 Yellow Hydraulic Pump Delivery Check Valve (3050GM).Pressurization of the Hydraulic Reservoirs through the Ground ConnectorOpen the Main Gear Doors for AccessClose the Main Gear Doors after AccessBleeding of the High Pressure Alternate Braking SystemOpening of the Fan Cowl DoorsClosing of the Fan Cowl DoorsOperational Test of the Thrust Reverser SystemFig. 315
(1)
Obey the hydraulic safety procedures (Ref. TASK 29-00-00-910-002).
(2)
Put the warning notices and safety barriers in position.
Subtask 12-36-29-865-052
B. Open, safety and tag this(these) circuit breaker(s):
-------------------------------------------------------------------------------PANEL DESIGNATION IDENT. LOCATION -------------------------------------------------------------------------------49VU HYD/HYD PWR/B WARN/& CTL 2702GJ C12 121VU HYDRAULIC/HYD POWER/Y 3803GX N30 121VU HYDRAULIC/Y HYD/PUMP ENG2/MONG 3700GD Q37 121VU HYDRAULIC/Y HYD/PUMP ENG2/CTL 3701GD Q36 121VU HYDRAULIC/G HYD/PUMP ENG1/CTL 1701GK R35 121VU HYDRAULIC/G HYD/PUMP ENG1/MONG 1702GK R34 123VU B HYD/ELEC PUMP 2701GJ AB09 123VU Y HYD/ELEC/PUMP 3802GX AB06
R 123VU Y HYD/ELEC/ELEC PUMP/NORM 3801GX AB03
Subtask 12-36-29-010-074
C. Get Access
(1)
Open the access door 198CB.
(2)
Open the access door 134AR.
(3)
Open the access door 154AR.
(4)
Open the engine 2 fan-cowl doors (Ref. TASK 71-13-00-010-040).
(5)
Open the left or right MLG door (Ref. TASK 32-12-00-010-001).
(6)
Put the locking handles of the FWD and AFT cargo-compartment doors in the UNLOCKED position.
Subtask 12-36-29-680-051
D. Drain the reservoir of the Yellow hydraulic system (Ref. TASK 29-10-00-680-002).
Subtask 12-36-29-860-101
E. Preparation for the Fluid Change
(Ref. Fig. 315/TASK 12-36-29-991-015)
CAUTION : MAKE SURE THAT THE FLOW RATE AND THE SUPPLY PRESSURE ON THE
_______
GROUND HYDRAULIC CART ARE SET TO A MINIMUM.
Change of the Hydraulic Fluid in the Yellow Hydraulic System - Schematic
Figure 315/TASK 12-36-29-991-015
(1)
Put the access platform in position at the engine 2.
(2)
Put the access platform in position at the MLG bay.
(3)
Put the container below the fluid disconnect panel at the engine 2 to collect the hydraulic fluid.
(4)
Put the hydraulic power cart in position as necessary.
(5)
Connect the pressure hose of the hydraulic power cart (filled with new hydraulic fluid) to the delivery connector 3008GM at the ground service panel (Ref. detail A).
(6)
Connect the return hose of the auxiliary hydraulic reservoir with a capacity of 100 l (26.4 USgal) to the suction connector 3006GM at the ground service panel.
NOTE : The auxiliary hydraulic reservoir must have a contents gage.
____
4. Procedure
_________ (Ref. Fig. 315/TASK 12-36-29-991-015) NOTE : The Green hydraulic system will be pressurized via the PTU for this
____
procedure, the Green hydraulic reservoir must be pressurized.
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