737-300 400 500 AMM 飞机维护手册 起落架 LANDING GEAR 2(17)

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 NOTE:____ The electrical connection is on the inboard side of the right bulkhead of the nose wheel well.
 (3)  S 434-120Install the lockwire on the electrical plug.
 (4)  S 434-060Remove the caps and connect the hydraulic lines (2) to the swivel (3) on the swivel bracket (1) of the right trunnion (4).
 (5)  S 414-059Install the wheel well doors of the nose landing gear (AMM 32-22-11/401).
 (6)  S 094-058Remove the oleo lock assembly from the nose landing gear.
 (7)  S 614-063Service the shock strut with oil and nitrogen (AMM 12-15-41/301).
 (8)  S 864-057Pressurize the hydraulic system A (AMM 29-15-00/201).
 (9)  S 794-121Examine the swivels (3) for leakage.

 S 714-129
 (10) Test the Nose Landing Gear Safety Sensor (AMM 32-09-02/501).
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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A 737-300/400/500MAINTENANCE MANUAL
 S 714-130
 (11)
 Do the nose gear taxi lights:

 S 714-056

 (12)
 Do an extension and a retraction test of the nose landing gear (AMM 32-33-00/501).

 S 714-055

 (13)
 Do a test on the manual extension system of the nose landing gear (AMM 32-35-00/501).

 S 864-054

 (14)
 Remove the pressure from the hydraulic system A (AMM 29-15-00/201).

 S 714-135

 (15)
 Do a steering test of the nose wheel.

 (a)  
Lift the nose of the airplane with jacks until the tires of the gear will be clear of the ground (AMM 07-11-21/201).

 (b)  
Put the turning plates with grease below the tires of the nose landing gear.

 (c)  
Lower the nose of the airplane until the landing gear can hold the weight of the airplane.

 (d)  
Pressurize the hydraulic system A (AMM 29-15-00/201).

 (e)  
Make sure that the nose landing gear does not try to move when you pressurize the hydraulic system A.

 (f)  
Make sure that the steering wheel is in the neutral (centered) position.

 (g)  
Make sure that the rudder pedals are in the neutral position.

 (h)  
Turn the steering wheel counterclockwise to the left stop position and hold. 1) Make sure that the nose landing gear will move to the left

 at approximately 78 degrees.

 (i)  
Turn the steering wheel clockwise to the right stop position and hold.

 CAUTION:_______ DO NOT OPERATE THE STEERING WHEEL WITH THE SHOCK STRUT FULLY
 EXTENDED AND THE TORSION LINKS ARE CONNECTED.  DAMAGE TO THE
 CENTERING CAMS OF THE SHOCK STRUT CAN OCCUR.  IF IT IS
 NECESSARY TO OPERATE THE STEERING SYSTEM, MAKE SURE THAT YOU
 COMPRESS THE SHOCK STRUT TO 2.10 INCHES OR MORE.  MAKE SURE
 THAT THE DISTANCE BETWEEN THE BOTTOM SURFACE OF THE LOWER
 STEERING PLATE AND THE TOP SURFACE OF THE TOWING LUG IS LESS
 THAN 23.4 INCHES.

 1) Make sure that the nose landing gear will move to the right side at approximately 78 degrees.
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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
737-300/400/500MAINTENANCE MANUAL
 (j)  
Release the steering wheel. 1) Make sure that the steering wheel will go back to the neutral position.

 2)  Make sure that the nose landing gear will go back to the center position.

 (k)  
Push the left rudder pedal forward until it touches the rudder quadrant stop. 1) Make sure that the nose landing gear will move to the left

 side at approximately 7 degrees.

 (l)  
Release the rudder pedal. 1) Make sure that the rudder pedals will go back to the neutral position.

 2)  Make sure that the nose landing gear will go back to the center position.

 (m)  
Use the right rudder pedal and do the steps (k) and (l).

 S 584-122
　
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