Adjustment of the NWS "Zero" Position with the Adjusting Tool F26630200 for A/C with NWS Sensor (3GC,4GC) P/N C24763000, NLG Centering Cams as Reference Adjustment of the NWS "Zero" Position for A/C with NWS Sensor Box (3GC,4GC) P/N E21336000, NLG Centering Cams as referenceAdjustment of the NWS "Zero" Position with the Adjusting Tool F26630200 for A/C with NWS Sensor (3GC,4GC) P/N C24763000 using the Nose Wheel Alignment Tool Adjustment of the NWS "Zero" Position for A/C with NWS Sensor Box (3GC, 4GC) P/N E21336000 using the Nose Wheel Alignment ToolRemoval of the Transmitter Unit - Nose Wheel Steering Handwheel (1GC,2GC)Installation of the Transmitter Unit - Nose Wheel Steering Handwheel (1GC,2GC) Removal of the Nose Wheel Steering Feedback Sensor Box (3GC, 4GC) P/N E21336000Check of the Voltage at the Nose Wheel Steering Feedback Sensor (3GC,4GC) Installation of the Nose Wheel Steering Feedback Sensor Box (3GC, 4GC) P/N E21336000Removal of the Nose Wheel Steering Gearbox P/N C24764000
Removal of the Nose Wheel Steering Servo-ValveInstallation of the Nose Wheel Steering Servo-ValveIR Alignment ProcedureADIRS Stop ProcedureDifference of Temperature between the two Brakes on a Same GearDifference of Average Temperature between the L and R Gears
Fig. 201
R **ON A/C 001-049, 051-099, 101-105, 151-199, 201-220, 301-399,
R 32-51-00-991-005 Fig. 202 R **ON A/C 106-149, 221-299, 401-499,
R 32-51-00-991-005-A Fig. 202A 「一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一1 EFF : ALL
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REFERENCE DESIGNATION
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R 32-51-00-991-007 Fig. 203 R
**ON A/C ALL
3. Fault Confirmation
__________________
A. Test
NOTE : A Nose Wheel Steering (NWS) angle of 0.5 degree (3 degrees rudder
____ trim) or less is permitted. If more than 3 degrees of rudder trim was necessary to keep the aircraft straight during taxi, the cause could be due to side winds or runway camber. To make sure that the problem with the NWS system was not caused by external effects, it is necessary to let the aircraft return to service (after having done some checks) and monitor the aircraft at the next taxi operation. But, when there are 3, or more, aircraft log book entries in the last 10 flights this is an indication that there is a fault in the NWS system. Thus the operator must trouble shoot the NWS system to find the cause of the NWS offset.
NOTE : It is possible that an aircraft can have part of this procedure
____ done and be returned to service to monitor the NWS, then returned again to maintenance engineering for more trouble shooting. When this occurs the procedure must be done from the start each time, to prevent cumulative-errors.
NOTE : It is possible that no rudder trim figure is associated to a
____ report of veering tendency.In this case ,and as a conservative measure the NWS angle is considered to be more than 0.5 degree and less than ,or equal to 1.5 degrees (more than 3.0 degree rudder trim and less than, or equal to 8.8 degree rudder trim).
(1) Do a check of the Post Flight Report (PFR) and the aircraft log book for NWS and/or Braking related problems :
(a) If there is NWS and/Or Braking CFDS maintenance message on the PFR, go to Page Block 101 and do the applicable trouble shooting.
(b) If there is any entry in the log book related to a HOT BRAKES warning, do the inspection applicable to an emergency brake application or overheat (Ref. AMM TASK 05-51-16-200-001).
(c) If there is any entry in the log book related to a brake temperature problem, but there is no HOT BRAKES warning, do the applicable trouble shooting (Ref. TSM TASK 32-42-00-810-921) and (Ref. TSM TASK 32-42-00-810-922).
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(2) Do an inspection/check of the NLG tires.
(a) Do an inspection of the condition of the nose wheel tires for wear or damage (Ref. AMM TASK 32-41-00-210-002). The two tires must not show damage and must have almost the same wear condition.
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