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.
(9) Pressurize the left hydraulic system to 2850 to 3150 psig (AMM 29-11-00/201).
S 095-089
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.
(10) Remove the towing lever lockpin.
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S 735-090
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.
(11)
Manually push the left summing mechanism lever (56, Detail D, Fig. 502) full travel, and move the input lever for the metering valve (53) forward. Hold the lever (56) in this position until the steering collar (41) moves to a minimum of 10 degrees. Make sure the angular movement of the steering collar is at least 10 degrees, then do the steps that follow:
(a)
Slowly release the summing mechanism lever (56). Make sure the input lever for the metering valve (53) automatically goes back to the center.
(b)
Install the rig pin NS5 in the input lever for the metering valve (53). Make sure the rig pin moves freely. Remove the rig pin.
S 735-091
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.
(12)
Do the step before this again. This time, move the input lever for the metering valve (53) aft until the steering collar moves to a minimum of 10 degrees.
S 495-092
(13)
Install the towing lever lockpin.
S 495-093
(14)
Install the rig pins NS1, NS2, and NS3. Make sure they move freely.
(15)
Remove the rig pins NS1, NS2 and NS3.
S 865-095
(16)
Remove the pressure from the left hydraulic system (AMM 29-11-00/201).
(17)
Put the airplane back to its initial condition.
S 095-094
S 865-096
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G. Do the Test of the Tiller Handle Steering
S 035-097
(1)
Make sure the torsion links for the nose landing gear (42 and 44, Detail A, Fig. 502) are disconnected.
S 985-098
(2)
Make sure the upper torsion link (44) is held in a position that is parallel to the ground.
S 495-099
(3)
Put the rig pin NS1 into the rig pin hole (15, View A-A, Fig. 501) in the captain's forward quadrant.
S 495-100
(4)
Install the dial indicator torque wrench and adaptor on the
Captain's tiller handle.
S 735-101
(5)
Use the dial indicator torque wrench to turn the Captains' tiller handle (31, View D, Fig. 501) to the right (clockwise). Turn it until it moves the cam roller (13, View A-A) from the detent in the load limiter (18). Make sure the measured torque is 108 to 160 pound-inches (12.2 to 18.1 newton-meters).
S 735-183
(6)
Use the dial indicator torque wrench to turn the Captains' tiller handle (31, View D, Fig. 501) to the left (counterclockwise). Turn it until it moves the cam roller (13, View A-A) from the detent in the load limiter (18). Make sure the torque is 108 to 160 pound-inches (12.1 to 18.1 newton-meters).
S 095-104
(7)
Remove the rig pin NS1 from the captain's forward quadrant (14, View A-A, Fig. 501)
S 865-105
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 CAN CAUSE INJURY TO PERSONS OR DAMAGE TO EQUIPMENT.
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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(113)
