757 AMM 飞机维护手册 起落架 CHAPTER 32 - LANDING GEAR 1(63)

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 NOTE:____ Use the pin insertion tool.
 (8)  S 722-040Do the test of the sensor with the actuator test tool.
 NOTE:____ Refer to the task which does a test of the sensors.
 (a)  Make sure the sensor is kept more than one inch away from all metal surfaces during the test.
 (9)  S 422-039Use the screws (2), the shims (3), and the nuts (4) to install the sensor (1). (a) Tighten the screws (2).

 

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757 MAINTENANCE MANUAL
 S 422-070
 (10)
 Do these steps to install the circular sensor (S10697):

 (a)  
Put the shims on the sensor.

 (b)  
Put the sensor in the bracket.

 (c)  
Secure the sensor with the nut.

 S 222-048
 (11) Make sure the clearance between the sensor and its target is correct (refer to Fig. 201).
 NOTE: This step is very important if damage was found to the
____ sensor, target, or the mounting brackets.
 S 432-067
 (12)
 For a circular sensor, put lockwire on the attaching nut.

 S 432-041

 (13)
 Put a lockwire on the conduit coupling nut.

 S 432-049

 (14)
 In the junction box (J-1), put the wire bundles together with the braided lock stitch.

 NOTE: This will prevent the wires from wear on the cover of the
____
 junction box.

 S 412-046
 (15)
 Use the bolts to install the cover on the J-1 or the J-2 junction box.

 (a)  
Tighten the bolts.

 TASK 32-09-07-702-027
 4. The Test for the Truck Tilt Sensor of the Main Landing Gear
___________________________________________________________
 A. General
 (1)  
If the sensor is installed correctly, the clearance between the sensor and the target will be as shown in Figure 201. Although an adjustment is usually not necessary, you must do a check of the clearance. If an adjustment is necessary, you can remove layers of the lamination from the shim.

 (2)  
To do the test on the sensor, the airplane is on the landing gear. The test for the target position is done with the proximity switch electronics unit (PSEU). A proximity sensor actuator tool is used to do a check of sensor operation during a sensor installation. A deactuator tool can be used to find if a sensor signal will change from target near to target far (for a sensor that is installed in its bracket).

 B.
Equipment

 (1)  
Proximity Sensor Actuator/Deactuator Set - A27092-84

 

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C.
D.
E.
757 MAINTENANCE MANUAL
 (2)  Proximity Sensor Actuator Test Set - A32102-25 (Rectangular actuator is necessary) or
 KHT 8-750-01 Go Gauge (Rectangular Actuator) Eldec Corporation Aircraft Systems Division
 P.O. Box 3002, Bothel WA, 98041-3002 (Alternative)
 NOTE: These tools makes sure the sensor operates to
____ its specified limits.
References
 (1)  
AMM 06-41-00/201, Fuselage (Major Zones 100 and 200) Access Doors and Panels

 (2)  
AMM 24-22-00/201, Electrical Power - Control

 (3)
Chapter 20, Wiring Diagram Manual (WDM)Access

 (1)  Location Zones 119/220 211/212 731/741  Main Equipment CenterControl CabinMain Landing Gear
 (2)  Access Panels

 119BL Main Equipment Center
Prepare to Do the Test for the Truck Tilt Sensors
 S 492-028
　
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