(2)
Make sure that the pressure gage (2) shows 3000 +100 -100 psi.
5. Close-up
________ Subtask 29-13-21-860-055
A. Connect the isolation coupling of the Power Transfer Unit (PTU)
(Ref. TASK 29-23-00-860-002).
Subtask 29-13-21-410-050
B. Close Access
(1)
Make sure that the work area is clean and clear of tool(s) and other items.
(2)
Close the access door 196BB.
Subtask 29-13-21-865-052
C. Remove the safety clip(s) and the tag(s) and close this(these) circuit breaker(s): 1881GP, 3801GX, 3802GX, 3803GX.
VALVE - CHARGING, YELLOW POWER ACCUMULATOR (3071GM) - REMOVAL/INSTALLATION
__________________________________________________________________________ TASK 29-13-22-000-001 Removal of the Accumulator-Gas Charging Valve (3071GM) WARNING : MAKE SURE THAT THE GROUND SAFETY-LOCKS ARE IN POSITION ON THE LANDING
_______ GEAR.
1.
Reason for the Job
__________________
Self Explanatory
2.
Job Set-up Information
______________________
A. Fixtures, Tools, Test and Support Equipment
-------------------------------------------------------------------------------REFERENCE QTY DESIGNATION -------------------------------------------------------------------------------
No specific circuit breaker(s) safety clip(s) No specific 1 CAP - BLANKING No specific 1 PLUG - BLANKING No specific 1 WARNING NOTICE
B. Referenced Information
-------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
29-00-00-864-001 Put the Related Hydraulic System in the Depressurized
Configuration before Maintenance Action 29-14-00-614-001 Depressurization of the Hydraulic Reservoirs 29-23-00-860-001 Disconnection of the Isolation Coupling of the Power
Transfer Unit (PTU) 29-13-22-991-001 Fig. 401
3. Job Set-up
__________
Subtask 29-13-22-865-050
A. Open, safety and tag this(these) circuit breaker(s):
-------------------------------------------------------------------------------PANEL DESIGNATION IDENT. LOCATION -------------------------------------------------------------------------------121VU HYDRAULIC/SOL VALVES/G/Y/B/LEAK/TST 1881GP N35 121VU HYDRAULIC/HYD POWER/Y 3803GX N30 123VU Y HYD/ELEC/PUMP 3802GX AB06 123VU Y HYD/ELEC/ELEC PUMP/NORM 3801GX AB03
Subtask 29-13-22-860-050
B. Aircraft Maintenance Configuration
(1)
Put the WARNING NOTICE 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.
(2)
Make sure that the Yellow hydraulic system is depressurized and put it in the maintenance configuration. (Ref. TASK 29-00-00-864-001).
(3)
Depressurize the reservoir of the Yellow hydraulic system (Ref. TASK 29-14-00-614-001).
(4)
Disconnect the isolation coupling of the Power Transfer Unit (PTU) (Ref. TASK 29-23-00-860-001).
Subtask 29-13-22-010-051
C. Open the access door 196BB.
4. Procedure
_________
(Ref. Fig. 401/TASK 29-13-22-991-001) Subtask 29-13-22-614-050
A. Depressurize the Power Accumulator (3070GM)
(1)
Remove the endcap (6) from the gas charging-valve (4).
(2)
Turn the nut (5) carefully to the OPEN position and release the nitrogen pressure.
Subtask 29-13-22-020-050
B. Removal of the Gas Charging-Valve (3071GM)
(1)
Cut, remove and discard the lockwire from the gas charging-valve (4).
(2)
Remove the gas charging-valve (4).
(3)
Install the PLUG - BLANKING in the adapter (2).
(4)
Install the CAP - BLANKING on the gas charging-valve (4).
Gas Charging Valve
Figure 401/TASK 29-13-22-991-001
1EFF : ALL 1 29-13-22 Page 404
1 1 May 01/05
1 1
1CES 1
TASK 29-13-22-400-001
Installation of the Accumulator-Gas Charging Valve (3071GM)
WARNING : MAKE SURE THAT THE GROUND SAFETY-LOCKS ARE IN POSITION ON THE LANDING
_______ GEAR.
1. Reason for the Job
__________________
Self Explanatory
2. Job Set-up Information
______________________
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