3. Job Set-up
__________ Subtask 29-24-21-865-050
A. Open, safety and tag this(these) circuit breaker(s):
-------------------------------------------------------------------------------PANEL DESIGNATION IDENT. LOCATION -------------------------------------------------------------------------------121VU HYDRAULIC/HYD POWER/Y 3803GX N30 123VU Y HYD/ELEC/PUMP 3802GX AB06 123VU Y HYD/ELEC/ELEC PUMP/NORM 3801GX AB03
Subtask 29-24-21-860-050
B. Aircraft Maintenance Configuration
(1)
Open the access door 198CB.
(2)
Open the access panel 196BB.
WARNING : OBEY THE HYDRAULIC SAFETY PROCEDURES.
_______
(3)
Obey the hydraulic safety procedures (Ref. TASK 29-00-00-910-002).
(4)
Put the warning notices in position to tell persons not to pressurize the Yellow hydraulic system:
-in the cockpit on the hydraulic section 40VU of the overhead panel, - on the ground service panel of the Yellow hydraulic system.
(5)
Make sure that the Yellow hydraulic system is depressurized and put it in the maintenance configuration. (Ref. TASK 29-00-00-864-001).
(6)
Depressurize the reservoir of the Yellow hydraulic system (Ref. TASK 29-14-00-614-001).
(7)
Put the container below the HP manifold of the Yellow hydraulic system.
(8)
Disconnect the isolation coupling of the power transfer unit (PTU) (Ref. TASK 29-23-00-860-001).
4. Procedure
_________ (Ref. Fig. 401/TASK 29-24-21-991-001) Subtask 29-24-21-020-050
A. Removal of the Yellow E-Pump Check Valve (3083GM) CAUTION : USE A SECOND WRENCH TO APPLY COUNTERTORQUE TO THE UNION WHEN
_______ YOU DISCONNECT/CONNECT HYDRAULIC LINES ON UNIONS. IF YOU USE THE SECOND WRENCH, YOU WILL NOT LOOSEN OR TIGHTEN THE UNION TOO MUCH.
(1)
Loosen the pipe end-fitting (2) and disconnect the pipe (1) from the check valve (3).
(2)
Remove the check valve (3) from the T-fitting (5).
(3)
Put blanking plugs on the disconnected pipe end-fitting (2) and in the open port of the T-fitting (5).
(4)
Remove and discard the packing (4).
Yellow E-Pump Check Valve (3083GM)
Figure 401/TASK 29-24-21-991-001
1EFF : ALL 1 29-24-21 Page 404
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1 1
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TASK 29-24-21-400-001 Installation of the Yellow E-Pump Check Valve (3083GM) WARNING : MAKE SURE THAT THE GROUND SAFETY-LOCKS ARE IN POSITION ON THE LANDING
_______
GEAR.
WARNING : OBEY THE HYDRAULIC SAFETY PROCEDURES.
_______
1.
Reason for the Job
__________________
Self Explanatory
2.
Job Set-up Information
______________________
A. Fixtures, Tools, Test and Support Equipment
-------------------------------------------------------------------------------REFERENCE QTY DESIGNATION -------------------------------------------------------------------------------
No specific container
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 -------------------------------------------------------------------------------
Material No. 02-003 F NSA 307110 TYPE 4
HYDRAULIC FLUID (PHOSPHATE ESTER BASE)
(Ref. 20-31-00)
C. Expendable Parts
-------------------------------------------------------------------------------FIG.ITEM |DESIGNATION |IPC-CSN -------------------------------------------------------------------------------
4 packing 29-13-03 15A-120 R 4 packing 29-13-03 15B-120
D. Referenced Information
-------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
29-00-00-864-001 Put the Related Hydraulic System in the Depressurized
Configuration before Maintenance Action 29-00-00-910-002 Safety Procedures of the Hydraulic System 29-13-00-710-002 Operational Test of the Yellow Hydraulic System 29-13-14-000-001 Removal of the HP Manifold of the Yellow Hydraulic
System 29-13-14-400-001 Installation of the HP Manifold of the Yellow
Hydraulic System 29-13-45-610-001 Servicing of the HP-Filter (3048GM) 29-14-00-614-001 Depressurization of the Hydraulic Reservoirs 29-23-00-860-001 Disconnection of the Isolation Coupling of the Power
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