(3) Manually turn the pinion (6). Make sure that it turns without friction point.
(4) Apply COMMON GREASE (Material No. 04-004A) to the pinion (6). Subtask 32-51-19-820-051
B. Adjustment of the Electrical 0 degree Position of the Sensor Box
(1)
Loosen the knob (11) to release the pushrod (10).
(2)
Connect the SENSOR-VOLTAGE TEST (F26792000) or SENSOR - VOLTAGE TEST (F26792000-1) (13) between the connector (8) and the sensor box (7).
(3)
Energize the aircraft electrical circuits (Ref. TASK 24-41-00-861-002).
(4)
On the panel 402VU, set the A/SKID & N/W STRG switch to ON.
(5)
Connect a AC voltmeter (minimum range:0-20V, accuracy: 1 mV, frequency: 50-2000 Hz) to the SECONDARY VOLTAGE connections on the SENSOR-VOLTAGE TEST (F26792000) or SENSOR - VOLTAGE TEST (F26792000-1) (13).
(6)
On the SENSOR-VOLTAGE TEST (F26792000) or SENSOR - VOLTAGE TEST (F26792000-1) (13) set the selector switch to U1 and record U1. Then set the selector switch to U2 and record U2.
(7)
Turn the pinion (6) until:
U1 = U2 plus or minus 0.01 V
(8)
When U1 = U2 plus or minus 0.01 V, push the pushrod (10) and hold it in the pushed position to prevent rotation of the pinion (6).
NOTE : When you lock the pinion (6) with the pushrod (10), the
____ voltage value U1/U2 can change by more than plus or minus 0.01
V. Ignore this, but the value must be less than 0.045 V.
(9) On the panel 402VU, set the A/SKID & N/W STRG switch to OFF.
(10) Disconnect the SENSOR-VOLTAGE TEST (F26792000) or SENSOR - VOLTAGE TEST (F26792000-1) (13) from the sensor box (7).
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C. Installation of the Sensor Box (7)
(1)
Make sure that the spacers (5) are installed on the sensor box (7).
(2)
Install the sensor box (7) on the nose landing gear.
(3)
Install the springs (4), the bushes (3), the washers (2) and the screws (1). Tighten the screws (1).
(4)
Release the pushrod (10).
(5)
TORQUE the screws (1) to between 0.35 and 0.4 m.daN (30.97 and 35.39 lbf.in).
(6)
Turn the knob (11) to lock the pushrod (10).
(7) Safety the knob (11) with MISCELLANEOUS (Material No. 19-010). Subtask 32-51-19-220-052
D. Check of the Electrical 0 degree Position CAUTION : IF THE SENSOR BOX HAS P/N E21336000, NEVER REMOVE THE SENSOR
_______ FROM THE GEARBOX. THE SENSOR AND THE GEARBOX ARE AN ASSEMBLY THAT YOU MUST NOT DISASSEMBLE ON THE AIRCRAFT. IF YOU REMOVE THE SENSOR FROM THE GEARBOX:
-YOU WILL CAUSE DAMAGE TO THE SENSOR BOX
-THE ADJUSTMENT OF THE SENSOR BOX WILL NO LONGER BE CORRECT. NOTE : When the shock absorber is fully extended, the NLG is
____ automatically in the center position (the nose wheel steering is in the zero position).
(1)
Connect the SENSOR-VOLTAGE TEST (F26792000) or SENSOR - VOLTAGE TEST (F26792000-1) (13) on the sensor box (7).
(2)
On the panel 402VU, set the A/SKID & N/W STRG switch to ON.
(3)
Measure the secondary voltages U1 and U2.
Make sure that : U1 = U2 plus or minus 0.02 V
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(4) If U1 is not equal to U2 plus or minus 0.02 V, do these steps:
(a) Use a spatula to remove the sealant:
-
from the areas identified E
-
from the housing of the worm screw (12).
NOTE : Do not cause damage to the surface protections of these
____
parts.
(b)
Loosen the screws (9) to release the sensor.
(c)
Turn the worm screw (12) to get: U1 = U2 plus or minus 0.02 V
(d)
TORQUE the screws (9) to between 0.29 and 0.35 m.daN (25.66 and
30.97 lbf.in).
(e)
Make sure that U1 = U2 plus or minus 0.02V. If not, do the adjustment again.
(5)
On the panel 402VU, set the A/SKID & N/W STRG switch to OFF.
(6)
Remove the SENSOR-VOLTAGE TEST (F26792000) or SENSOR - VOLTAGE TEST (F26792000-1) (13).
(7)
Connect the electrical connector (8) to the sensor box (7).
(8) On the panel 402VU, set the A/SKID & N/W STRG switch to ON. Subtask 32-51-19-914-052
E. Apply the Sealant
(Ref. Fig. 402/TASK 32-51-19-991-002)
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