(3)
Make sure that the Green hydraulic system is depressurized. (Ref. TASK 29-10-00-864-001).
1EFF : ALL 1 32-51-19Page 602 1 1 Aug 01/05 1 1 1CES 1 1EFF : ALL 1 32-51-19Page 603 1 1 Aug 01/05 1 1 1CES 1
(4) Make sure that the aircraft electrical circuits are de-energized (Ref. TASK 24-41-00-862-002).
R **ON A/C 401-499,
R Subtask 32-51-19-860-052-A
R B. Aircraft Maintenance Configuration
R (1) Jack up the front of the aircraft (Ref. TASK 07-11-00-581-003).
R R R NOTE : In the fully extended position of the shock absorber, the NLG____ is automatically centered (the nose wheel steering is in the zero position).
R R (2) On the nose gear leg, on the electrical box 5GC, make sure that the towing lever is in the normal (engaged) position.
R R (3) Make sure that the Yellow hydraulic system is depressurized. (Ref. TASK 29-10-00-864-002).
R R (4) Make sure that the aircraft electrical circuits are de-energized (Ref. TASK 24-41-00-862-002).
R **ON A/C ALL
4. Procedure_________
**ON A/C 001-004, 051-054,
Subtask 32-51-19-220-050
A. Check of the Voltage at the Sensor Connector
(1) Disconnect the electrical connector 3GC-A(4GC-A) from the sensor 3GC(4GC).
(2) Connect the SENSOR-VOLTAGE TEST (F26792000) or SENSOR - VOLTAGE TEST (F26792000-1) between the connector of the sensor 3GC(4GC) and the connector 3GC-A(4GC-A).
(3) Energize the aircraft electrical circuits (Ref. TASK 24-41-00-861-002).
(4)
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.
(5)
Check of the play on the NLG cams
(a)
On the SENSOR-VOLTAGE TEST (F26792000) or SENSOR - VOLTAGE TEST, set the selector switch to U1.
(b)
Manually move the wheels in steering mode on the RH stop. Record the voltage U1.
(c)
Manually move the wheels in steering mode on the LH stop. Record the voltage U1'.
(d)
From the voltage U1 and U1', calculate the average voltage U1".
(e)
Manually move the wheels in steering mode to get the voltage U1". NOTE : The angular travel of the nose wheels includes the NLG cam
____
play and the NLG torque link play.
(6) Check of the voltage NOTE : Do not move the wheels manually in steering mode when you do a
____
check of the voltage.
This can cause an incorrect voltage indication.
(a)
On the SENSOR-VOLTAGE TEST (F26792000) or SENSOR - VOLTAGE TEST set the selector switch to U1.
(b)
Record the voltage U1
(c)
On the SENSOR-VOLTAGE TEST (F26792000) or SENSOR - VOLTAGE TEST set the selector switch to U2.
(d)
Record the voltage U2
(e)
From the voltage U1 and U2, calculate the voltage U:
U = U1 - U2
(7)
This voltage U must not be more than 20mV/AC
(8)
If the voltage U is more than 20 mV/AC adjust the nose wheel steering gearbox (Ref. TASK 32-51-00-820-002) or (Ref. TASK 32-51-00-820-002).
R 1EFF : 001-004, 051-054, 1 32-51-19Page 604 1 1 Aug 01/05 1 1 1CES 1
(9) De-energize the aircraft electrical circuits
(Ref. TASK 24-41-00-862-002).
(10) Remove the SENSOR-VOLTAGE TEST (F26792000) or SENSOR - VOLTAGE TEST (F26792000-1) and connect the connector 3GC-A(4GC-A) to the sensor 3GC(4GC).
R **ON A/C 005-049, 055-099, 101-149, 151-199, 201-299, 301-399, 401-499,
Subtask 32-51-19-220-050-A
A. Check of the Voltage at the Sensor Connector
(1)
Disconnect the electrical connector 3GC-A(4GC-A) from the sensor 3GC(4GC).
(2)
Connect the SENSOR-VOLTAGE TEST (F26792000) or SENSOR - VOLTAGE TEST (F26792000-1) between the connector of the sensor 3GC(4GC) and the connector 3GC-A(4GC-A).
(3)
Energize the aircraft electrical circuits (Ref. TASK 24-41-00-861-002).
(4)
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.
(5)
Check of the play on the NLG cams
(a)
On the SENSOR-VOLTAGE TEST (F26792000) or SENSOR - VOLTAGE TEST, set the selector switch to U1.
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