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(8) Make sure that the access platform is in position below the lockstay
assembly in zone 123.
(9) Make sure that you obeyed the flight configuration precautions
(Ref. TASK 32-00-00-860-001).
R **ON A/C 401-499,
R Subtask 32-21-17-860-051-A
R A. Aircraft Maintenance Configuration
R (1) Make sure that the Yellow hydraulic system is depressurized and put
R it in the maintenance configuration.
R (Ref. TASK 29-00-00-864-001)
R (2) Make sure that the reservoir of the Yellow hydraulic system is
R depressurized (Ref. TASK 29-14-00-614-001).
R (3) Make sure that the aircraft is lifted with jacks (Ref. TASK 07-11-00-
R 581-003).
R (4) In the cockpit, on the panel 400VU, make sure that the warning
R notice(s) is (are) in position to tell persons not to operate the
R landing gear control lever.
R (5) Make sure that the warning notice(s) is (are) in position to tell
R persons not to pressurize the Yellow hydraulic system:
R - on the panel 40VU in the cockpit,
R - on the ground service panel of the Yellow hydraulic system, access
R door (196BB).
R (6) Make sure that the safety barriers are in position.
R (7) Make sure that the doors of the nose landing gear are open (Ref. TASK
R 32-22-00-010-001).
R (8) Make sure that the access platform is in position below the lockstay
R assembly in zone 123.
R (9) Make sure that you obeyed the flight configuration precautions
R (Ref. TASK 32-00-00-860-001).
R **ON A/C ALL
Subtask 32-21-17-865-054
B. Make sure that this(these) circuit breaker(s) is(are) open, safetied and tagged
-------------------------------------------------------------------------------PANEL DESIGNATION IDENT. LOCATION -------------------------------------------------------------------------------121VU HYDRAULIC/LGCIU/SYS1/GRND SPLY 52GA Q34
4. Procedure_________
(Ref. Fig. 401/TASK 32-21-17-991-001)
Subtask 32-21-17-210-050
A. Preparation for Installation
(1) Clean the attachment hardware with CLEANING AGENTS (Material No. 11-004A) and dry with filtered compressed air.
(2) Apply a light coat of SPECIAL MATERIALS (Material No. 05-047) to the threads of all the screws, bolts and nuts.
R R R (3) Install the GROUND SAFETY LOCK (D23080000) or PIN-NLG DOWNLOCK SAFETY (MZ23080000) as an alternative on the new lockstay assy to make its handling easier.
Subtask 32-21-17-420-050
B. Installation of the Lockstay Assembly
(1) Apply a light coat of COMMON GREASE (Material No. 04-004) and COMMON GREASE (Material No. 04-022) on the pin (10).
NOTE : Do not mix Material No. 04-004 with Material No. 04-022. You____ can use Material No. 04-022 as an alternative to Material No. 04-004. Clean and degrease the parts before you use Material No. 04-022.
(2) Put the lockstay assy (23) on the gear leg.
(3) Install the pin (10), the spacer (11), the lockstay assy (23) and the
washer (25) with the GUIDE CONE (J47557)
NOTE : Set the rigging holes of the pin (10) vertically.
____
(4)
Remove the GUIDE CONE (J47557).
(5)
Install the actuator (8) on the pin (10).
(6)
Install the ring (3) and align the rigging holes.
(7)
Install the bushing (4), the screw (1) and the washers (5) and (2).
(8)
TORQUE the nut (7) to between 1.7 and 2 m.daN (12.53 and 14.74
lbf.ft).
(9)
Safety the nut (7) with the new cotter pin (6).
(10) Apply a light coat of COMMON GREASE (Material No. 04-004) and COMMON GREASE (Material No. 04-022) on the bolt (17).
NOTE : Do not mix Material No. 04-004 with Material No. 04-022. You
____ can use Material No. 04-022 as an alternative to Material No. 04-004. Clean and degrease the parts before you use Material No. 04-022.
(11)
Align the bores of the drag strut (19) with the bores of the spherical joint on the lockstay assy (23).
(12)
Install the bolt (17) and the washers (20) and (18) with the GUIDE CONE (J47588).
(13)
TORQUE the nut (21) to between 2.5 and 3 m.daN (18.43 and 22.12 lbf.ft).
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