(3)
Make sure that the safet barriers are in position.
(4)
Make sure that the doors of the nose landing gear are open (Ref. TASK 32-22-00-010-001).
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(5) Jack up the front of the aircraft (Ref. TASK 07-11-00-581-003). NOTE : In the fully extended position of the shock absorber, the NLG
____ is automatically in the center position (the nose wheel steering is in the zero position).
4. Procedure
_________
(Ref. Fig. 401/TASK 32-51-41-991-001) Subtask 32-51-41-110-050
A. Preparation of the Replacement Component
(1)
Clean the component interface and/or the adjacent area.
(2)
Clean the attachment hardware with CLEANING AGENTS (Material No. 11-004A) and dry with filtered compressed air.
(3)
Apply a light coat of SPECIAL MATERIALS (Material No. 05-047) to the threads of all the screws.
Subtask 32-51-41-820-052
B. Adjustment of the Mechanical 0. Position of the Gearbox
(Ref. Fig. 402/TASK 32-51-41-991-003)
(1) Install the ASSEMBLY TOOL (M46196) on the gearbox:
(a)
Loosen the screws (7) so that you can move the gearbox plate (6) in the range of the openings.
(b)
Install the tool M46196-1 on the gearbox. To do this, put the tool shaft in the drive slot of the gearbox. The heads of the screws (7) go in the holes in the tool.
(c)
Turn the assembly to install the rigging pin M46196-4.
(d)
Install the pins M46196-3 in the three other holes to attach the tool M46196-1 to the gearbox.
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Nose Wheel Steering Gearbox P/N C24764000 - Adjustment to 0 deg. Position
Figure 402/TASK 32-51-41-991-003
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C. Installation of the Gearbox (5) CAUTION : WHEN YOU INSTALL THE GEARBOX, IT MUST HAVE THE TOOL M46196 ON
_______
IT.
(1)
Make sure that the spacers (4) are installed on the gearbox.
(2)
Install the gearbox on the gear leg.
(3)
Carefully install the springs (3), the bushes (2) and the screws (1).
(4)
TORQUE the screws (1) to between 0.35 and 0.4 m.daN (30.97 and 35.39 lbf.in) to get the dimension X.
(5)
Measure the dimension X:
(Ref. Fig. 401/TASK 32-51-41-991-001)
-
If X is between 0.5 mm (0.0196 in.) and 1.5 mm (0.0590 in.), the gearbox/leg engage correctly.
-
If X is more than 1.5 mm (0.0590 in.), disengage the gearbox and then engage it again, TORQUE the screws (1) to between 0.35 and 0.4 m.daN (30.97 and 35.39 lbf.in) and do a check of the dimension X.
(6)
Safety the screws (1) with corrosion resistant steel lockwire 0.8 mm
(0.03 in.).
(7) Remove the tool M46196-1 from the gearbox. Subtask 32-51-41-220-051
D. Do a check of the clearance Y:
(Ref. Fig. 401/TASK 32-51-41-991-001)
(1)
Compress the nose gear with a hydraulic jack to disengage the centering cams.
(2)
Fully turn the wheels of the NLG manually to the left to the internal stop of the nose wheel steering actuating cylinder.
(3)
On the gearbox, measure the clearance Y between the internal stop of the cylinder and the planet carrier stop. The clearance Y must be equal to or more than 1 mm (0.0393 in.).
(4)
Fully turn the wheels of the NLG manually to the right to the internal stop of the nose wheel steering actuating cylinder.
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(5)
On the gearbox, measure the clearance Y between the internal stop of the cylinder and the planet carrier stop. The clearance Y must be equal to or more than 1 mm (0.0393 in.).
(6)
If the clearance Y is less than 1 mm (0.0393 in.), replace the gearbox (Ref. TASK 32-51-41-000-001).
(7)
Remove the hydraulic jack to engage the centering cams of the NLG (zero position).
Subtask 32-51-41-820-050
E. Adjustment of the Gearbox Plate (6)
(Ref. Fig. 403/TASK 32-51-41-991-005)
(1)
Install the rigging tool M46196-2 on the gearbox.
