S 715-059
(10)
Use the captain's tiller (31, Detail D, Fig. 501) to apply full travel for a left turn. Turn the handle until the stop (14B, View B-B) touches the stop bolt (14C) on the captain's forward quadrant (Detail A).
S 825-060
(11)
Add or remove washers below the stop bolt (14C) to adjust the stop bolt (14C) set point. Do this until the steering collar (41, Detail E, Fig. 502) turns 65|1 degrees from the center.
S 825-061
(12)
Apply full right travel with the tiller, and use the step before this to adjust the right turn stop bolt (14C).
S 985-062
(13)
Turn the tiller handle (31, Detail D, Fig. 501), |360 degrees full travel to operate the system through 3 cycles.
32-51-00
ALL ú ú 01A Page 527 ú Sep 28/01
A
757
MAINTENANCE MANUAL
S 865-063
(14)
Remove the pressure from the left hydraulic system (AMM 29-11-00/201).
S 825-064
(15)
Make sure all the cables for the nose wheel steering have the correct tension (Table 502).
S 825-065
(16)
If you did not have to adjust cable tension, go to step (16). If you adjusted the cable tension in the previous step, do the test that follows:
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.
(a)
Pressurize the left hydraulic system (AMM 29-11-00/201).
(b)
Turn the captain's tiller handle (31) clockwise from the center until you touch the stop. Hold the tiller against the stop and make sure the angular movement of the steering collar (41, View E, Fig. 502) is 65 |1 degrees clockwise.
(c)
Release the captain's tiller (31) and let it go to the center without manual aid.
(d)
Make sure the tiller goes to the center in less than 4 seconds.
(e)
Make sure the steering collar (41) is less than |1 1/2 degrees from the center.
(f)
If the nose landing gear does not go to a position that is less than |1-1/2 degrees from the center, do the steps that follow: 1) Remove the pressure from the left hydraulic system
(AMM 29-11-00/201).
2) Adjust the tension in the cables NWSA (9) and NWSB (8) until the nose landing gear is less than |1-1/2 degrees from the center (the tension of the cables must be in the limits shown in Table 502).
NOTE: Adjust one cable, then the other, in small
____ increments.
3) Put the nose landing gear less than |1/2 degree from the
center position. 4) Make sure the rig pins NS1, NS2, and NS3 have a free fit. 5) Pressurize the left hydraulic system (AMM 29-11-00/201).
32-51-00
ALL ú ú 01A Page 528 ú Sep 28/01
A
757
MAINTENANCE MANUAL
(g) If you adjusted the cables per step (f), make sure the rig pins NS1 through NS4 have a free fit. The nose landing gear must be less than |1/2 degrees from the center position when you do this.
NOTE: The rig pins have a free fit if you can remove and
____ install them with two fingers. There can be some resistance.
(h) Use paragraphs (15)(b) and (15)(c) to do the test for the full travel, but turn the captain's tiller handle counterclockwise.
S 825-067
(17)
Turn the captain's tiller handle clockwise until the stop (14B, View B-B, Fig. 501) touches the stop bolt (14C). Make sure the maximum torque is not more than 30 pound-inches.
S 435-069
(18)
Connect the torsion links for the nose landing gear (42 and 44, Detail A, Fig. 502) (AMM 32-21-09/401).
TASK 32-51-00-735-070
7. System Test - Nose Wheel Steering
_________________________________
A. General
(1)
The system test for the nose wheel steering has the five tests that follow:
(a)
System clearance, valve binding, and centering
(b)
Tiller handle steering
(c)
Rudder pedal steering
(d)
Towing provisions
(e)
Rudder pedal disconnect and the strut centering cam.
(2)
In this test, rig pins have a free fit if you can remove the rig pins with two fingers. It is possible you will feel some resistance.
中國航空網 www.k6050.com
航空翻譯 www.aviation.cn
本文鏈接地址：757 AMM 飛機維護手冊 起落架 CHAPTER 32 - LANDING GEAR 3(111)
