(a)
Install the shims and the sensor with the screws.
(b)
ON AIRPLANES WITH ADJUSTABLE SENSORS; Align the sensor with the target on the door.
NOTE: Adjustable sensors have slots at the attach point.
____
1) Make sure the sensor fits between the fasteners that attach the target to the door.
(c)
Tighten the screws.
(d)
Cut the wire but keep a sufficient length to install splices.
(e)
Remove the insulation from the wires and install splices between the wire bundle and the sensor wires. 1) Make sure the wire color code is correct.
(f)
Do the test of the sensor with the actuator test tool.
NOTE: Refer to the task which does a test of the sensors.
____
TASK 32-61-02-702-040
4. Test the Proximity Sensors for the Main Landing Gear________________________________________________________
A. General
(1)
A correctly installed sensor will have the necessary clearance as shown in Fig. 201 thru 203. Clearance adjustment usually is not necessary. Measure the clearance if the sensor support, the sensor target, or target support is moved, changed, or damaged, or if the main landing gear door is re-rigged. Clearance adjustment procedures are in the task that follows this one.
(2)
The test of the sensor is done with the airplane on the ground and not on jacks. On the M162 Proximity Switch Electronics Unit (PSEU) on E3-4 shelf (AMM 32-09-04/401) you can do a target position test. This test will make sure that the sensor operates correctly. You must use the actuator test tool to do a sensor operation check.
(a)
You can also do a test without the actuator test tool to find the current sensor target state (target near or target far).
B.
Equipment
(1)
Proximity Sensor Actuator/Deactuator Set -A27092-84 (Round sensor deactuator is
necessary)
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MAINTENANCE MANUAL
(2) Proximity Sensor Actuator Test Set - A32102-35
(Rectangular and round sensor actuator is necessary)
or
KHT 8-750-01 Go Gauge (Rectangular Actuator)
KHT 8-752-00 Go Gauge (Circular 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.
C. References
(1)
24-22-00/201, Electrical Power - Control
(2)
29-11-00/201, Pressurize/Depressurize Main Hydraulic System
(3)
32-00-15/201, Landing Gear Door Locks
(4)
32-00-20/201, Landing Gear Downlocks
(5)
32-09-04/401, Proximity Switch Electronics Unit
D.
Access
(1)
Location Zones
119 Main Equipment Center
143 MLG Wheel Well (Left)
144 MLG Wheel Well (Right)
211 Control Cabin (Left)
212 Control Cabin (Right)
731 Main Landing Gear (MLG) (Left)
741 Main Landing Gear (MLG) (Right)
E.
Prepare for the Test
S 492-043
(1) Make sure the downlocks are installed on the nose and main landing gear (AMM 32-00-20/201).
S 492-032
WARNING:_______OBEY THE INSTALLATION PROCEDURE FOR THE DOOR LOCKS. THE DOORS OPEN AND CLOSE QUICKLY. THE MOVEMENT OF THE DOORS CAN CAUSE INJURIES TO PERSONS AND DAMAGE TO EQUIPMENT.
(2) Open the doors for the landing gear and install the door locks (AMM 32-00-15/201).
NOTE: The doors for the nose and main landing gear open at the same
____
time by ground release.
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S 862-033
(3)
Make sure the pressure is removed from the left hydraulic system (AMM 29-11-00/201).
S 862-034
(4)
Make sure the control lever for the landing gear is in the DN position.
S 862-035
(5)
Make sure these circuit breakers on the overhead circuit breaker panel, P11 are closed:
(a)
11C19, LANDING GEAR POS SYS 2 ALTN
(b) 中国航空网 www.aero.cn 航空翻译 www.aviation.cn 本文链接地址：757 AMM 飞机维护手册 起落架 CHAPTER 32 - LANDING GEAR 3(161)
