C. Remove electrical power if it is not necessary (Ref 24-22-00/201).
500
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NOSE GEAR UPLOCK SENSOR - ADJUSTMENT/TEST
1. Nose Gear Uplock Sensor Adjustment
A. General
(1) The nose gear must be in the up and locked position with the landing gear lever in the OFF position before making adjustments.
B. Equipment and Materials
(1) Ground Lock Assemblies (Ref 32-00-01)
C. Prepare for Adjustment
(1)
Check that all ground lock assemblies are installed (Ref 32-00-01).
(2)
Jack nose of airplane until nose wheel is clear of ground (Ref Chapter 7, Jacking).
(3)
Provide external electrical power to airplane.
(4)
Disconnect both nose gear door actuating rods.
(5)
Pressurize hydraulic system A (Ref 29-11-0 MP).
(6)
Remove nose gear ground lock assembly (Ref 32-00-01).
WARNING: CHECK THAT GROUND LOCK ASSEMBLIES ARE INSTALLED IN MAIN LANDING GEAR TO PREVENT INADVERTENT OPERATION OF GEAR. INJURY TO PERSONNEL AND/OR EQUIPMENT COULD RESULT IF GEAR RETRACTS.
(7)
Operate override trigger and place landing gear lever in UP position and retract nose gear.
WARNING: MAKE CERTAIN PERSONNEL AND EQUIPMENT ARE CLEAR OF NOSE GEAR PATH.
(8)
Place landing gear lever in OFF position.
NOTE: Nose gear must be in normal flight position before adjusting sensor. Normal flight position is with no pressure on the actuator. (Landing gear lever in OFF position).
D. Adjust Nose Gear Uplock Sensor
(1)
Loosen uplock sensor mounting bolts.
(2)
Adjust sensor position for a gap between sensor face and sensor actuator as indicated on Fig. 501.
(3)
Tighten sensor mounting bolts.
(4)
Test nose gear uplock sensor (Ref 32-61-0, Adjustment/Test).
500
Jun 20/87 BOEING PROPRIETARY - Copyright . - Unpublished Work - See title page for details. 32-61-41 Page 501
Nose Gear Uplock Sensor Adjustment 500
32-61-41 Figure 501 (Sheet 1) Aug 15/67
Page 502
BOEING PROPRIETARY - Copyright . - Unpublished Work - See title page for details.
E. Restore Airplane to Normal Configuration
(1)
Extend nose gear and install gear ground lock assembly (Ref 32-00-01).
WARNING: MAKE CERTAIN PERSONNEL AND EQUIPMENT ARE CLEAR OF NOSE GEAR PATH.
(2)
Connect nose gear door actuating rods.
(3)
Lower airplane nose and remove jacks (Ref Chapter 7, Jacking).
(4)
Check requirement for external electrical power; if none, remove external electrical power.
(5)
Check requirement for System A hydraulic power; if none, remove System A hydraulic power (Ref 29-11-0).
500 Nose Gear Uplock Sensor Adjustment
Feb 01/95 Figure 501 (Sheet 2) 32-61-41
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NOSE GEAR DOWNLOCK SENSOR AND SENSOR ACTUATOR - REMOVAL/INSTALLATION
1. General
A. The positioning of the nose gear downlock sensor and sensor actuator is quite critical. The following procedure must be followed to ensure proper positioning of the sensor and sensor actuator.
2. Removal/Installation Nose Gear Downlock Sensor
A. Equipment and Materials
(1) Ground Lock Assemblies (Ref 32-00-01)
B. Remove Nose Gear Downlock Sensor
(1)
Open LIGHTS, GEAR SWITCH & ANTI-SKID TEST and AURAL WARNING circuit breakers on panel P6.
(2)
Check that ground lock assemblies are installed (Ref 32-00-01).
(3)
Remove cover from downlock sensor support beam (Fig. 401).
(4)
Disconnect downlock sensor leads from terminal strip. Note terminal and wire color.
(5)
Remove sensor mounting bolts and remove sensor.
C. Install Nose Gear Downlock Sensor
(1)
Position downlock sensor in place and install mounting bolts. Do not tighten (Fig. 401).
(2)
Twist sensor leads, trim to length and install terminal lugs.
(3)
Connect electrical leads to terminal strip as noted in step 2.B.(4).
(4)
Check that landing gear control lever is in DN position.
(5)
Adjust sensor adjusting screw for a gap between sensor face and sensor actuator as indicated on Fig. 401. Tighten sensor mounting blots.
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