(10)
Press nose, right main, and left main landing gear green and red lights individually. Check that each light comes on when pressed and each light goes off when released.
(11)
Place landing gear control lever in OFF position and check that red warning lights remain off.
(12)
Place landing gear control lever in DN position.
(a)
Check that red warning lights for all three landing gear come on as control lever is placed in DN position.
(b)
Check that respective red warning light goes off and green indicator light comes on when each landing gear extends to down and locked position.
(13)
Test aural warning response to landing gear position indication (Ref 31-26-0).
530
Jun 20/93 BOEING PROPRIETARY - Copyright . - Unpublished Work - See title page for details. 32-61-0 Page 503
E. Restore Airplane to Normal
(1)
Install ground lock assemblies in all landing gear (Ref 32-00-01).
(2)
Remove electrical power if no longer required (Ref 24-22-00 MP).
(3)
Remove System A hydraulic power if no longer required (Ref 29-11-0).
(4)
Lower airplane and remove jacks (Ref 07-11-11).
501
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CONTROL LEVER POSITION SWITCH - REMOVAL/INSTALLATION
1. Equipment and Materials
A. Ground Lock Assemblies (Ref 32-00-01)
2. Prepare Control Lever Position Switch for Removal
A. Check that all ground lock assemblies are installed (Ref 32-00-01).
B. Open all circuit breakers on landing gear circuit breaker panel P6-2.
C. Depressurize hydraulic system A (Ref 29-11-0, Maintenance Practices).
3. Remove Control Lever Position Switch
A. Release and lower first officer's instrument panel.
B. Remove screws attaching switch support bracket to control lever assemble (Fig. 401).
C. Remove screws attaching switch assembly to support bracket.
D. Disconnect switch wiring at switch terminals. Note terminal to which each wire is attached.
E. Remove switch from switch assembly.
4. Install Control Lever Position Switch
A. Assemble switch on switch assembly and install assembly on support bracket (Fig. 401).
CAUTION: SWITCH INSTALLATION BOLTS MUST BE INSTALLED WITH HEADS FACING INBOARD TO AVOID INTERFERENCE WITH CONTROL LEVEL LOCK MECHANISM.
B. Attach wires to switch terminals (Ref step 3.D).
C. Position switch and support bracket assembly in place on control lever assembly and install mounting bolts. Do not tighten.
D. Move control lever to DN position and adjust support bracket position until the position switch is actuated.
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Control Lever Position Switch Installation 501
32-61-11 Page 402 Figure 401 BOEING PROPRIETARY - Copyright . - Unpublished Work - See title page for details. May 01/74
E. Close all circuit breakers on landing gear circuit breaker panel P-6.
F. Test operation of position switch as follows:
(1)
Connect external electrical power.
(2)
With landing gear lever in OFF position, check that landing gear red warning lights are on.
(3)
Place landing gear lever in DN position, check that landing gear red warning lights go out.
(4)
Remove electrical power if no longer required.
500
Sep 20/82 BOEING PROPRIETARY - Copyright . - Unpublished Work - See title page for details. 32-61-11 Page 403
MAIN GEAR UPLOCK SENSOR - REMOVAL/INSTALLATION
1. General
A. The following procedure applies to both left and right main gear uplock sensors.
2. Equipment and Materials
A. Ground Lock Assemblies - F72735 (Ref 32-00-01)
B. Actuator bar for proximity sensors
(1)
Material: 1020 steel per MIL-S-7952, 15-5 ph steel, or 17-4 ph steel per AMS 5643
(2)
Size: For use on rectangular sensors - 1.5 x 0.75 x 0.050 inches
C. Deactuator bars for proximity sensors
(1) Material: 5052, 6061, 7075, or 2024 aluminum or sheet copper (0.05 inches thick)
3. Prepare Main Gear Uplock Sensor for Removal
A. Open all circuit breakers on landing gear circuit breaker panel P6-2.
B. Check that ground lock assemblies are installed in all landing gear (Ref 32-00-01).
4. Remove Main Gear Uplock Sensor
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