Subtask 32-31-22-420-051
B. Installation of the NLG Actuating Cylinder
(1)
Set the actuating cylinder (8) on its upper link with the GUIDE CONE-NLG (98D32203501000).
(2)
Install the pin (9), the washers (6), the new lockwasher (5) and the nut (4).
(3)
TORQUE the nut (4) to 5 m.daN (36.87 lbf.ft) with ADAPTER-WRENCH (98D32303000000) and safety it with the lockwasher (5).
1EFF : ALL 1 32-31-22Page 411 1 1 May 01/05 1 1 1CES 1
(4)
Install the lubrication insert (10) and set the grease nipple up.
(5)
Install the washer (3), the new lockwasher (2) and the nut (1).
(6)
TORQUE the nut (1) to 0.5 m.daN (44.24 lbf.in) with ADAPTER-WRENCH (98D32303000000) and safety it with the lockwasher (2).
(7)
Engage the spherical end (12) of the actuating cylinder (8) on the barrel pin (11) with the GUIDE CONE (J47557).
(8)
Install the stop ring (17), the bushing (16), the screw (19) and the washers(18) and (15).
(9)
Install and TORQUE the nut (13) to between 1.7 and 2 m.daN (12.53 and
14.74 lbf.ft).
(10)
Safety the nut (13) with the new cotter pin (14).
(11)
Remove the blanking plugs from the disconnected line ends.
(12)
Connect the hydraulic lines (20) and (21) to the elbows (23) and (22).
(13)
TORQUE the union nuts of the hydraulic lines (20) and (21) to between
2.43 and 2.76 m.daN (17.92 and 20.35 lbf.ft).
(14)
Lubricate the spherical ends of the actuating cylinder (8) (Ref. TASK 12-22-32-640-002).
Subtask 32-31-22-942-053
C. Preparation for Test
(1)
Make sure that the work area is clean and clear of tool(s) and other items.
(2)
Remove the container below the actuating cylinder.
(3)
Remove the access platform(s).
(4)
Close the NLG doors (Ref. TASK 32-22-00-410-001).
1EFF : ALL 1 32-31-22Page 412 1 1 May 01/05R 1 1 1CES 1
Subtask 32-31-22-720-050
D. Functional Test
(1) Do the functional Test of the NLG normal extension and retraction . (Ref. TASK 32-31-00-720-003)
NOTE : Do 5 full retraction/extension cycles of the NLG as slowly as
____
possible to bleed the hydraulic system.
(2)
Open the NLG doors (Ref. TASK 32-22-00-010-001).
(3)
Put the access platform in position below the actuating cylinder (2527GM) in zone 123.
(4)
Make sure that there is no hydraulic fluid leakage from the actuating cylinder (2527GM).
(5)
If necessary fill the reservoir of the Green hydraulic system to the correct level (Ref. TASK 12-12-29-611-001) or (Ref. TASK 12-12-29-611-002).
(6)
Apply SEALANTS (Material No. 09-001) on the screw heads and the nuts.
5. Close-up
________ Subtask 32-31-22-862-050
A. De-energize the ground service network
(Ref. TASK 24-42-00-862-001).
Subtask 32-31-22-410-050
B. Close Access
(1)
Remove the ground support and maintenance equipment, the special and standard tools and all other items.
(2)
Remove the access platform(s).
(3)
Close the doors of the nose gear (Ref. TASK 32-22-00-410-001).
(4)
Remove the warning notice(s).
1EFF : ALL 1 32-31-22Page 413 1 1 May 01/05 1 1 1CES 1
ACTUATOR - DOWNLOCK RELEASE-NLG - REMOVAL/INSTALLATION
______________________________________________________ TASK 32-31-23-000-001 Removal of the NLG Downlock Release Actuator (2845GM) WARNING : MAKE SURE THAT THE GROUND SAFETY-LOCKS ARE IN POSITION ON THE LANDING
_______ GEAR.
WARNING : PRESSURIZE ONLY THE HYDRAULIC SYSTEM(S) THAT IS (ARE) NECESSARY FOR
_______ THE TASK. ISOLATE THE OTHER HYDRAULIC SYSTEM(S) BEFORE YOU SUPPLY HYDRAULIC POWER TO THE AIRCRAFT.
WARNING : MAKE SURE THAT THE CONTROLS AGREE WITH THE POSITION OF THE ITEMS THEY
_______ OPERATE BEFORE YOU PRESSURIZE A HYDRAULIC SYSTEM.
1.
Reason for the Job
__________________
Self Explanatory
2.
Job Set-up Information
______________________
A. Fixtures, Tools, Test and Support Equipment
-------------------------------------------------------------------------------REFERENCE QTY DESIGNATION -------------------------------------------------------------------------------
中国航空网 www.aero.cn
航空翻译 www.aviation.cn
本文链接地址：A320飞机维护手册 AMM LANDING GEAR 起落架4(135)
