Nose Gear Uplock Sensor Installation 500
32-61-41 Figure 401 Aug 15/67
Page 402
BOEING PROPRIETARY - Copyright . - Unpublished Work - See title page for details.
5. Install Nose Gear Uplock Sensor
A. If you found damage to the sensor or the adjacent area during the removal procedure, do these steps:
(1)
Examine the target for the sensor and the adjacent area for signs of possible damage.
(2)
If you found damage, repair or replace all damaged components or areas.
NOTE: Damage to the sensor, the target, or the adjacent areas is an indication of an incorrect sensor clearance.
(3)
If you found damage, do the adjustment procedure for the sensor clearance after you make the repairs (Ref 32-61-41/501).
B. Twist the sensor leads together.
C. Attach the line in the flexible conduit (used during the removal procedure) to the end of the sensor leads.
D. Carefully pull the sensor leads through the flexible conduit.
E. Install the mounting bolts on the sensor.
F. Install the spacers as tagged during the removal procedure.
CAUTION: INSTALL THE SPACERS AS TAGGED. IF YOU DO NOT INSTALL THE SPACERS AS TAGGED IN THE REMOVAL PROCEDURE, THE SENSOR CLEARANCE CAN CHANGE. AN INCORRECT CLEARANCE CAN CAUSE SENSOR DAMAGE OR INCORRECT SENSOR OPERATION.
NOTE: If you change the installation of the spacers, a gear retraction and extension procedure can be necessary.
G. Install the sensor on the mounting bracket.
H. Put the sensor in the correct position on the mounting bracket.
I. Tighten the sensor attaching hardware.
NOTE: If you replace the spacers or install them differently, do not tighten the mounting bolts.
J. Put the twisted sensor leads into the wire bundle.
K. If it is necessary, cut the sensor leads to the correct length.
L. Replace the terminal lugs on the sensor lead ends.
M. Connect sensor leads to the terminal strip.
500
Feb 01/95 BOEING PROPRIETARY - Copyright . - Unpublished Work - See title page for details. 32-61-41 Page 403
6. Adjustment and Test
A. If you have one of more of the conditions that follow, you must adjust (Ref 32-61-41/501), and do a test of the uplock sensor (Ref 32-61-0/501):
(1)
Damage to the sensor
(2)
Damage to the sensor mounting bracket or adjacent structure
(3)
Damage to the sensor target
(4)
If you changed the spacers
B. If you do not have the conditions given before, do these steps to do a test of the uplock sensor:
(1)
Remove the DO-NOT-CLOSE tags and close all circuit breakers for the landing gear on the circuit breaker panel, P6-2.
(2)
Supply electrical power (Ref 24-22-0/201).
(3)
Make sure that hydraulic systems A and B are not pressurized (Ref 29-11-0/201 and 29-12-0/201).
(4)
Put the control lever for the landing gear in the DN position.
(5)
Make sure the green lights for the nose gear are on.
NOTE: These lights are above the conrol lever for the landing gear.
(6)
Move the throttle fully forward.
(7)
Move the control lever for the landing gear to the UP position.
(8)
Put the actuator on the uplock sensor.
NOTE: It is only necessary to put the actuator and deactuator on the sensors you replace.
(9)
Put a deactuator on the downlock sensor.
(10)
Make sure the green light for the nose gear is not on.
(11)
Make sure the red light for the nose gear is not on.
(12)
Remove the actuator from the uplock sensor.
(13)
Make sure the red light for the nose gear is on.
(14)
Remove the deactuator from the downlock sensor.
(15)
Move the control lever for the landing gear to the OFF position.
(16)
Install the cover on the downlock sensor support beam.
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