Main Gear Uplock Sensor Installation 559
32-61-21 Figure 401 (Sheet 1) Aug 15/76
Page 402
BOEING PROPRIETARY - Copyright . - Unpublished Work - See title page for details.
532 Main Gear Uplock Sensor Installation May 01/76 Figure 401 (Sheet 2) 32-61-21 Page 402A/402B BOEING PROPRIETARY - Copyright . - Unpublished Work - See title page for details.
5. Install Main 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 32-61-21/501).
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. Install the washers and nuts on the mounting bolts and tighten the nuts.
NOTE: If you replace the spacers or install them differently, do not tighten the nuts.
J. Put the twisted sensor leads into the wire bundle.
K. Attach the sensor wires to the wire bundle with a wiring clamp.
L. If it is necessary, cut the sensor leads to the correct length.
M. Replace the pins on the sensor lead ends.
N. Install the lead pins in the electrical connector.
(1) Make sure that you installed the pins in the correct location.
O. Connect the third wire (yellow) at the ground point.
P. Connect the electrical connector.
597
Oct 20/92 BOEING PROPRIETARY - Copyright . - Unpublished Work - See title page for details. 32-61-21 Page 403
6. Adjustment and Test
A. If you have one of more of the conditions that follow, you must adjust (Ref 32-61-21/501), 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
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