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29-00-00-864-001 Put the Related Hydraulic System in the Depressurized
Configuration before Maintenance Action 29-10-00-864-002 Depressurize the Yellow Hydraulic System 29-14-00-614-001 Depressurization of the Hydraulic Reservoirs 29-14-00-614-002 Pressurization of the Hydraulic Reservoirs through
the Ground Connector 29-23-00-860-001 Disconnection of the Isolation Coupling of the Power Transfer Unit (PTU) 29-23-00-860-002 Connection of the Isolation Coupling of the Power Transfer Unit (PTU) 32-00-00-481-001 Installation of the Safety Devices on the Landing
Gears 32-43-00-710-001 Operational Check of Alternate Braking System 32-43-00-870-002 Bleeding of the High Pressure Alternate Braking
System 32-43-27-991-001 Fig. 401
3. Job Set-up
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Subtask 32-43-27-941-053
A. Safety Precautions
(1)
Make sure that the safety barriers are in position.
(2)
Make sure that the ground safety locks are on the landing gear (Ref. TASK 32-00-00-481-001).
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(3)
On the panel 400VU:
-
make sure that the landing-gear control-lever 6GA is in the DOWN position
-
make sure that the warning notice is in position to tell persons not to operate the landing gear.
(4)
Make sure that the warning notice is in position on the ground service connection to tell persons not to pressurize the Yellow and Green hydraulic systems.
Subtask 32-43-27-860-050
B. Aircraft Maintenance Configuration
(1)
Make sure that the access platform is below the a pplicable false rear spar at the alternate brake manifold, at zone 571 or 671.
(2)
Make sure that the isolation coupling of the PTU is disconnected (Ref. TASK 29-23-00-860-001).
(3)
Make sure that the Yellow and Green hydraulic systems are de-pressurized (Ref. TASK 29-00-00-864-001) and (Ref. TASK 29-10-00-864-002).
(4)
Make sure that the applicable hydraulic reservoir has been depressurized (Ref. TASK 29-14-00-614-001).
Subtask 32-43-27-865-051
C. Make sure that this(these) circuit breaker(s) is(are) open, safetied and tagged
-------------------------------------------------------------------------------PANEL DESIGNATION IDENT. LOCATION -------------------------------------------------------------------------------121VU HYDRAULIC/BRAKING AND STEERING/SYS2/SPLY 4GG M36 121VU HYDRAULIC/BRAKING AND STEERING/SYS2/CTL 3GG M35 121VU HYDRAULIC/BRAKING AND STEERING/SYS1/CTL 1GG M34 121VU HYDRAULIC/BRAKING AND STEERING/SYS1/IND AND/SPLY 2GG M33 121VU HYDRAULIC/PARK BRK/CTL/STBY 71GG N37 121VU HYDRAULIC/PARK BRK/CTL/NORM 70GG N36 121VU HYDRAULIC/HYD POWER/Y 3803GX N30 123VU Y HYD/ELEC/PUMP 3802GX AB06 123VU Y HYD/ELEC/ELEC PUMP/NORM 3801GX AB03
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4. Procedure
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(Ref. Fig. 401/TASK 32-43-27-991-001) Subtask 32-43-27-420-051
A. Preparation for Installation
(1)
Clean the component interface and/or the adjacent area with a MISCELLANEOUS (Material No. 19-003) made moist with CLEANING AGENTS (Material No. 11-026).
(2)
Make sure that the parts retained from the removed component are clean and in the correct condition.
(3)
Do an inspection of the component interface and/or the adjacent area.
(4)
Lubricate the seals (4) with HYDRAULIC FLUIDS (Material No. 02-003). Subtask 32-43-27-420-050
B. Installation of the Alternate Brake Servovalve
(1)
Remove the cover and install the seals (4) on the servovalve (2).
(2)
Install the rings (5) on the servovalve (2).
(3)
Align the dowel with its locating-hole on the manifold and install the servovalve (2) with the screws (3).
(4)
Remove the blanking caps and connect the electrical connector (1). Subtask 32-43-27-870-050
C. Bleed the System
(1)
Bleed the alternate brake system (Ref. TASK 32-43-00-870-002).
(2)
Use clean MISCELLANEOUS (Material No. 19-003) made moist with CLEANING AGENTS (Material No. 11-026) to remove unwanted hydraulic fluid.
Subtask 32-43-27-865-052
D. Remove the safety clip(s) and the tag(s) and close this(these) circuit breaker(s): 1GG, 2GG, 3GG, 4GG, 70GG, 71GG, 3801GX, 3802GX, 3803GX.
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本文链接地址：A320飞机维护手册 AMM LANDING GEAR 起落架7(91)
