S 865-162
(3) If the indicator (58) is not there, lift the airplane nose on jacks (AMM 07-11-02/201) to put the nose wheels in the center.
NOTE: The nose wheels and the steering collar will go to the center
____ when the shock strut is fully extended. The centering cams in the shock strut will do this automatically. It is possible that it will be necessary to manually put the nose wheels in the center. If the wheels are not in the detent for the center, you can feel when the wheels are manually turned and go into the detent.
S 865-179
CAUTION: ON AIRPLANES WITH THE 275N2059-1 OR -2 SPRING CARTRIDGE, MAKE
_______ SURE YOU HOLD THE TOP TORSION LINK IN THE HORIZONTAL POSITION. IF THE TORSION LINK IS NOT HELD IN THE HORIZONTAL POSITION, IT CAN CAUSE DAMAGE TO THE PROXIMITY SENSORS OR TARGETS FOR THE NOSE LANDING GEAR NOT COMPRESSED.
(4) If they are not disconnected, disconnect the torsion links (42 and 44, Fig. 502) (AMM 32-21-09/401).
NOTE: When the landing gear is extended with the torsion links
____
connected, you cannot install the rig pin NS7.
S 825-274
(5)
Hold the upper torsion link parallel to the ground.
S 865-164
(6)
Make sure the tiller pointer (31) is on the zero mark of the tiller indicator (32) (Detail D, Fig. 501).
S 825-165
(7)
Make sure the tension in the cables NWSA (9) and NWSB (8) is in tolerance (Table 502). Use the cable tensiometer.
S 015-167
(8)
Remove the cover from the summing mechanism for the metering valve (4, Fig. 501).
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S 495-169
(9) Make sure the rig pins that follow can be installed easily when the nose wheel steering is no more than |1/2 degree from the center:
NOTE: The rig pins have the correct fit when they can be installed
____ or removed with two fingers. Only pin NS6 is allowed to be lightly resistant.
(a)
NS1, Captain's forward quadrant (15, View A-A, Fig. 501)
(b)
NS2, steering quadrant (59, Detail C, Fig. 501)
(c)
NS3, summing mechanism (55, Detail D, Fig. 502)
S 095-170
(10)
Remove the rig pins.
S 715-171
(11)
Do the steps that follow to do a check of the travel and the operation of the nose wheel to the center with the hydraulic power on:
WARNING: BEFORE YOU PRESSURIZE THE HYDRAULIC SYSTEM FOR THIS
_______ PROCEDURE THE CONTROL HANDLE FOR THE LANDING GEAR MUST BE IN THE DOWN POSITION AND THE TORSION LINKS FOR THE NOSE LANDING GEAR MUST BE DISCONNECTED. THIS WILL PREVENT ACCIDENTAL OPERATION OF THE LANDING GEAR AND THE NOSE WHEEL STEERING WHICH CAN CAUSE INJURY TO PERSONS OR DAMAGE TO EQUIPMENT.
(a)
Make sure the control handle for the landing gear is in the DN position.
(b)
Make sure the torsion links (42 and 44, Detail A, Fig. 502) for the nose landing gear are disconnected. Hold the upper torsion link parallel to the ground.
WARNING: MAKE SURE ALL PERSONS AND EQUIPMENT ARE AWAY FROM MOVABLE
_______ SURFACES BEFORE YOU SUPPLY HYDRAULIC POWER TO THE NOSE WHEEL STEERING SYSTEM. WHEN YOU SUPPLY HYDRAULIC POWER TO THE SYSTEM FOR NOSE WHEEL STEERING SOME OF THE SURFACES CAN MOVE AND CAUSE INJURY TO PERSONS OR DAMAGE TO EQUIPMENT.
(c)
Pressurize the left hydraulic system (AMM 29-11-00/201).
(d)
Turn the Captain's tiller handle (31) clockwise from the center to the stop.
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(e)
Hold the Captain's tiller (31) against the stop and make sure the angular movement of the steering collar (41) is 65 |1 degrees clockwise.
(f)
Release the Captain's tiller (31) and let it go back to the center without manual aid.
(g)
Make sure the tiller goes back to the center in less than 4 seconds.
(h)
Make sure the steering collar (41) is not more than |1 1/2 degree from the center.
(i)
Do steps (d) through (h) again, but turn the Captain's tiller handle counterclockwise.
(j)
Remove the pressure from the left hydraulic system (AMM 29-11-00/201).
TASK 32-51-00-835-151
6. Rigging of the NWS System (Fig. 501, 501A, 502)
_________________________
A. General
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本文鏈接地址：757 AMM 飛機維護手冊 起落架 CHAPTER 32 - LANDING GEAR 3(108)
