Subtask 29-11-21-865-052
B. Remove the safety clip(s) and the tag(s) and close this(these) circuit breaker(s): 1881GP, 1701GK, 1702GK.
VALVE - CHARGING, GREEN POWER ACCUMULATOR (1071GM) - REMOVAL/INSTALLATION
_________________________________________________________________________ TASK 29-11-22-000-001 Removal of the Accumulator-Gas Charging Valve (1071GM) 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 ACCESS PLATFORM 3M (10 FT)- ADJUSTABLE 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) 32-12-00-010-001 Open the Main Gear Doors for Access
**ON A/C 001-001, 051-052,
29-11-22-991-001 Fig. 401 -------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
R **ON A/C 002-049, 053-099, 101-149, 151-199, 201-299, 301-399, 401-499,
29-11-22-991-001-A Fig. 401A
**ON A/C ALL
3. Job Set-up
__________
Subtask 29-11-22-865-050
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/G HYD/PUMP ENG1/CTL 1701GK R35 121VU HYDRAULIC/G HYD/PUMP ENG1/MONG 1702GK R34
Subtask 29-11-22-860-050
B. Aircraft Maintenance Configuration
(1)
Put the WARNING NOTICE in position to tell persons not to pressurize the Green hydraulic system:
-In the cockpit on the hydraulic section 40VU of the overhead panel
-On the ground service panel of the Green hydraulic system.
(2)
Make sure that the Green hydraulic system is depressurized and put it in the maintenance configuration. (Ref. TASK 29-00-00-864-001).
(3)
Depressurize the reservoir of the Green hydraulic system (Ref. TASK 29-14-00-614-001).
(4)
Open the left main door of the main gear (Ref. TASK 32-12-00-010-001).
(5)
Put an ACCESS PLATFORM 3M (10 FT)- ADJUSTABLE in position at the left door of the main gear.
(6)
Disconnect the isolation coupling of the Power Transfer Unit (PTU) (Ref. TASK 29-23-00-860-001).
4. Procedure
_________
**ON A/C 001-001, 051-052,
(Ref. Fig. 401/TASK 29-11-22-991-001) R **ON A/C 002-049, 053-099, 101-149, 151-199, 201-299, 301-399, 401-499,
(Ref. Fig. 401A/TASK 29-11-22-991-001-A)
**ON A/C ALL
Subtask 29-11-22-614-050
A. Depressurize the Power Accumulator (1070GM)
(1)
Remove the endcap (6) from the charging-valve (4).
(2)
Turn the nut (5) carefully to the OPEN position and release the nitrogen pressure.
Subtask 29-11-22-020-050
B. Removal of the Gas Charging-Valve (1071GM)
(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 29-11-22-991-001
Gas Charging Valve
Figure 401A/TASK 29-11-22-991-001-A
R 1EFF : 002-049, 053-099, 101-149, 151-199, 1 29-11-22Page 405 1201-299, 301-399, 401-499, 1Aug 01/05 1 1 1CES 1 TASK 29-11-22-400-001
Installation of the Accumulator-Gas Charging Valve (1071GM)
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