R 6_ Give a rudder trim input opposite the aircraft deviation.
R NOTE : Give the rudder trim inputs 1 degree by 1 degree, then
____ R 0.5 degree by 0.5 degree to get a fine adjustment.
R 7_ Do again the procedure and make an estimate of the new
R deviation.
R 8_ Align the aircraft again on the centerline and do again this
R procedure until the aircraft goes straight.Then record the
R rudder trim value X1.
R 9_ Do the same procedure on the same taxiway in the opposite
R direction.
R Then record the trim value X2.
R NOTE : The procedure is done in each direction to make sure
____ R that the effects of cross-winds and/or runway cambers R are not included.
R 10__ Calculate the average X of the two values X1 and X2 that you
R measured:
R X = (X1 + X2)/2
R Examples:
R X1 = +3.5 degree (L), X2 = +4.1 degree (L)
R X = (+3.5 + 4.1)/2 = +3.8 degree (L)
R X1 = +6 degree (L), X2 = -2 degree (R)
R X = (+6 - 2)/2 = +2 degree (L)
R 11__ Do the adjustment of the NWS "zero" position (Ref. AMM TASK
R 32-51-00-820-001).
R (c) Return the aircraft to service and make a record in the aircraft
R log book to monitor the NWS during the next taxi operation and to
R assess the aircraft lateral deviation, if any, using the rudder
R trim input.
R 1_ Refer to the Close-Up part (5.A) and do the relevant steps.
R (8) If the fault continues:
R - If the adjustment of the NWS Zero Position was done with the
R ALIGNMENT TOOL-NOSE WHEEL (JT2000AIRBUS), do step (7)(b).
R (9) If the fault continues after the gearbox was adjusted with the rudder
R trim angle as reference, replace the gearbox (3GC) Nose Wheel
R Steering gearbox (Ref. AMM TASK 32-51-19-000-001) and (Ref. AMM TASK
R 32-51-19-400-001).
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**ON A/C ALL
5. Close-up
________
A. Put the aircraft back to its initial configuration.
(1) Close the circuit breakers 2WW, 3WW, 2EN1 and 2EN2.
(2) On the MCDU, push the line key adjacent to the RETURN indication until the CFDS menu page comes into view.
(3) Do the ADIRS stop procedure (Ref. AMM TASK 34-10-00-860-005). (Ref. AMM TASK 29-10-00-864-001).
(4) Lower the aircraft on its wheels (Ref. AMM TASK 07-12-00-582-001).
(5) If the nose wheels are on greased plates, move the aircraft until the nose wheels are off the greased plates. Remove the greased plates (Ref. AMM TASK 09-10-00-584-002).
(6) If the NOSE WHEEL ALIGNMENT TOOL is installed, remove it.
(7) De-energize the aircraft electrical circuits
(Ref. AMM TASK 24-41-00-862-002).
(8) Make sure that the work area is clean and clear of tool(s) and other items.
B. After the subsequent flight, make sure that the fault does not continue.
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TASK 32-51-00-810-824
Hydraulic or Mechanical Failure of the Nose Wheel Steering System
1. Possible Causes
_______________
- SERVO CTL-N/W STEERING (6GC)
- rotating joint
- hydraulic pipe
- steering cylinder
2. Job Set-up Information
______________________
A. Referenced Information
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本文鏈接地址：A320 Trouble Shooting Manual 排故手冊 起落架 LANDING GEAR 2(134)
