R **ON A/C 001-001, 051-052,
29-11-42-991-001 Fig. 401 -------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
R **ON A/C 002-049, 053-099, 101-149, 151-199, 201-299, 301-399, 401-499,
29-11-42-991-001-A Fig. 401A
**ON A/C ALL
3. Job Set-up
__________
Subtask 29-11-42-865-050
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 29-11-42-860-050
B. Aircraft Maintenance Configuration
WARNING : OBEY THE HYDRAULIC SAFETY PROCEDURES.
_______
(1)
Obey the hydraulic safety procedures (Ref. TASK 29-00-00-910-002).
(2)
Put the warning notices 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.
(3)
Open the left door of the main gear (Ref. TASK 32-12-00-010-001).
(4)
Make sure that the Green hydraulic system is depressurized and put it in the maintenance configuration. (Ref. TASK 29-00-00-864-001).
(5)
Depressurize the reservoir of the Green hydraulic system. (Ref. TASK 29-14-00-614-001).
(6)
Disconnect the isolation coupling of the Power Transfer Unit (PTU) (Ref. TASK 29-23-00-860-001).
(7)
Put an access platform in position.
(8)
Put a container below the accumulator to collect any hydraulic fluid.
4. Procedure
_________
**ON A/C 001-001, 051-052,
(Ref. Fig. 401/TASK 29-11-42-991-001) R **ON A/C 002-049, 053-099, 101-149, 151-199, 201-299, 301-399, 401-499,
(Ref. Fig. 401A/TASK 29-11-42-991-001-A)
**ON A/C ALL
Subtask 29-11-42-614-051
A. Release the nitrogen pressure from the accumulator as follows:
(1) Remove the endcap from the charging valve (13).
(2)
Turn the nut to the OPEN position and release the nitrogen pressure. Subtask 29-11-42-020-050
B.
Removal of the Power Accumulator 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 union nut (1) and the union (2) and disconnect the hydraulic line from the union (2).
(2)
Remove the union (2) from the accumulator assembly.
(3)
Remove the nut (3) and washer (4) from the union (5).
Green Power Accumulator
Figure 401/TASK 29-11-42-991-001
R 1EFF : 001-001, 051-052, 1 29-11-42Page 404 1 1 May 01/05 1 1 1CES 1
Green Power Accumulator Figure 401A/TASK 29-11-42-991-001-A
R 1EFF : 002-049, 053-099, 101-149, 151-199, 1 29-11-42Page 405 1201-299, 301-399, 401-499, 1Aug 01/05 1 1 1CES 1
(4)
Hold the accumulator assembly, loosen the two clamp screws and remove
the two clamps (7).
(5)
Remove the accumulator from the mounting.
(6)
Close the open ends of the accumulator assembly and the hydraulic line with blanking caps.
TASK 29-11-42-400-001
Installation of the Green Power Accumulator
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
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