(a)
Make sure the steering collar is not more than |1 1/2 degrees from the center.
S 735-118
(6)
Do the two steps before this again, but push the left rudder pedal on the Captain's side.
S 865-119
(7)
Remove the pressure from the left hydraulic system
(AMM 29-11-00/201).
I.
Do the Test of the Towing Provisions
S 035-120
(1)
Make sure the torsion links for the nose landing gear (42 and 44, Detail A, Fig. 502) are disconnected.
S 985-121
(2)
Make sure the upper torsion link (44) is held in a position to be clear of the nose wheel tires during movement.
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WARNING: MAKE SURE ALL PERSONS AND EQUIPMENT ARE AWAY FROM THE SYSTEM
_______ FOR THE NOSE WHEEL STEERING BEFORE YOU SUPPLY HYDRAULIC POWER TO THE SYSTEM. PARTS OF THE SYSTEM FOR THE NOSE WHEEL STEERING CAN TURN AND CAUSE INJURY TO PERSONS OR DAMAGE TO EQUIPMENT.
(3) Pressurize the left hydraulic system to 2850 to 3150 psig
(AMM 29-11-00/201).
S 735-123
(4) Move the towing lever on the metering valve module to the TOW
position.
S 495-124
(5) Install the towing lever lockpin.
S 985-125
(6) Use the top torque link to manually turn the steering collar
clockwise and counter-clockwise from the center 0 |10 degrees. Make
sure the captain's tiller is free to turn.
NOTE:____ Steering collar input of greater than 12 degrees can cause
continued uncommanded movement to 35 or 50 degrees.
S 735-126
(7)
Make sure there is no resistance against the steering collar that is not because of the usual system friction.
S 985-127
(8)
Turn the steering collar to the center.
S 095-128
WARNING: MAKE SURE THE STEERING COLLAR IS IN THE CENTER BEFORE YOU
_______ REMOVE THE TOWING LEVER LOCKPIN. WHEN YOU REMOVE THE TOWING LEVER LOCKPIN, THE TOP TORSION LINK AND THE STEERING COLLAR WILL TURN QUICKLY TO THE CENTER AND CAN CAUSE INJURY TO PERSONS OR DAMAGE TO EQUIPMENT.
(9)
Remove the towing lever lockpin.
S 735-129
(10)
Make sure the towing lever on the metering valve automatically goes back to the NORMAL POSITION.
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(11)
Remove the pressure from the left hydraulic system
(AMM 29-11-00/201).
S 865-131
(12)
Put the airplane back to its initial condition if the tests are completed.
J.
Do the Test of the Rudder Pedal Disconnect and the Strut Centering Cam
S 435-182
(1) Connect the torsion links (42, 43) (AMM 32-21-09/401).
S 865-133
WARNING: MAKE SURE ALL PERSONS AND EQUIPMENT ARE AWAY FROM THE SYSTEM
_______ FOR THE NOSE WHEEL STEERING BEFORE YOU SUPPLY HYDRAULIC POWER TO THE SYSTEM. PARTS OF THE SYSTEM FOR THE NOSE WHEEL STEERING CAN TURN AND CAUSE INJURY TO PERSONS OR DAMAGE TO EQUIPMENT.
(2)
Pressurize the left hydraulic system to 2850 to 3150 psig
(AMM 29-11-00/201).
S 735-134
(3)
Fully push the right rudder pedal on the Captain's side and hold. Make sure that no movement was put to the steering system.
S 735-135
(4)
Release the right rudder pedal on the Captain's side.
S 735-136
(5)
Do the two steps before this again, but push the left rudder pedal on the Captain's side.
S 735-137
CAUTION: DO NOT MAKE A STEERING INPUT GREATER THAN 45 DEGREES WITH THE
_______ UPPER TORSION LINKS LOWERED (AIR MODE). THIS CAN CAUSE DAMAGE TO THE AIRPLANE.
(6)
Turn the Captain's tiller clockwise up to 45 degrees maximum.
(a)
Make sure the nose landing gear turns right.
S 735-138
(7) Release the Captain's tiller handle and make sure the nose landing gear goes back to less than |1 1/2 degrees from the center.
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S 735-139
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本文链接地址：757 AMM 飞机维护手册 起落架 CHAPTER 32 - LANDING GEAR 3(115)
