-------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
32-22-00-220-001 Check of the Nose-Gear Doors Gaps and Mismatches 32-22-00-410-001 Nose Gear Doors - Ground Doors Closing 32-22-00-820-001 Adjustment of the NLG doors 32-31-73-991-031 Fig. 509
3. Job Set-up
__________ Subtask 32-31-73-941-061
A. Safety Precautions
(1)
Put the safety barriers in position.
(2)
Make sure that the ground safety locks are installed on the landing gear (Ref. TASK 32-00-00-481-001).
(3)
On the panel 400VU:
-make sure that the landing-gear control-lever 6GA is in the DOWN position
-put a warning notice in position to tell persons not to operate the landing gear and the NLG doors.
(4)
Put a warning notice on the GRAVITY GEAR EXTN handle (panel 110VU) to tell persons not to operate the landing gear.
Subtask 32-31-73-010-059
B. Get Access
(1)
Open the NLG doors (Ref. TASK 32-22-00-010-001).
(2)
Put the access platform in position below the applicable zone 123 (124).
Subtask 32-31-73-869-062
C. Flight Configuration Precautions
(1) If the electrical power is not necessary for other maintenance tasks, de-energize the aircraft electrical circuits (Ref. TASK 24-41-00-862-002). Then, it is not necessary to open the LGCIU circuit breakers.
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(2) If the electrical power is necessary, do the precautions for flight configuration (Ref. TASK 32-00-00-860-001) before you open the LGCIU circuit breakers.
Subtask 32-31-73-865-075
D. Open, safety and tag this(these) circuit breaker(s):
-------------------------------------------------------------------------------PANEL DESIGNATION IDENT. LOCATION -------------------------------------------------------------------------------
49VU L/G/LGCIU/SYS1/NORM 1GA C09 121VU HYDRAULIC/LGCIU/SYS2 2GA Q35 121VU HYDRAULIC/LGCIU/SYS1/GRND SPLY 52GA Q34
4. Procedure
_________
(Ref. Fig. 509/TASK 32-31-73-991-031) Subtask 32-31-73-220-084
A. Dimensional Checks
(1)
Measure the dimension Z between each proximity sensor and its target. The correct dimension must be 2.0 mm (0.0787 in.) +/- 0.5 mm (0.0196 in.).
(2)
Measure the dimension X between the center line of each proximity sensor and its target. The correct dimension must be to a maximum of
2.5 mm (0.0984 in.) each side of the center line. Subtask 32-31-73-820-053
B. Adjustment of the NLG Door Open Proximity Sensors 36GA, 37GA, 38GA, 39GA
(1) If the dimension Z and/or the dimension X is incorrect, do a check of the NLG door clearances and mismatches (Ref. TASK 32-22-00-220-001).
(2) If necessary, adjust the NLG doors (Ref. TASK 32-22-00-820-001). Subtask 32-31-73-865-076
C. Remove the safety clip(s) and the tag(s) and close this(these) circuit breaker(s): 1GA, 2GA, 52GA.
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NLG Door Open Proximity Sensors - Dimension Checks Figure 509/TASK 32-31-73-991-031
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Subtask 32-31-73-869-063
D. Ground Configuration
(1) If you did not de-energize the aircraft electrical circuits, put the aircraft back to the ground configuration (Ref. TASK 32-00-00-860-002).
Subtask 32-31-73-410-059
E. Close Access
(1)
Make sure that the work area is clean and clear of tool(s) and other items.
(2)
Remove the access platform(s).
(3)
Close the NLG doors (Ref. TASK 32-22-00-410-001).
5. Close-up
________ Subtask 32-31-73-942-060
A. Removal of Equipment
(1)
Remove the safety barriers.
(2)
Remove the warning notice(s).
(3)
Remove the ground support and maintenance equipment, the special and standard tools and all other items.
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TASK 32-31-73-820-005
Adjustment of the NLG Downlock Proximity Sensors 18GA, 19GA
WARNING : PUT THE SAFETY DEVICES AND THE WARNING NOTICES IN POSITION BEFORE YOU
_______ START A TASK ON OR NEAR:
-
THE FLIGHT CONTROLS
-
THE FLIGHT CONTROL SURFACES
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