554 Landing Gear Control System Adjustment
Nov 15/80 Figure 501 32-31-0
Page 503
BOEING PROPRIETARY - Copyright . - Unpublished Work - See title page for details.
LANDING GEAR CONTROL LEVER ASSEMBLY - REMOVAL/INSTALLATION
1. Equipment and Materials
A. Gear Ground Lock Assembly (Ref 32-00-01)
B. Ohmmeter
2. Removing Landing Gear Control Lever Assembly
A. Check that gear ground lock assemblies are installed (Ref 32-00-01)
B. Depressurize hydraulic system.
C. Disconnect turnbuckles on landing gear control cables in forward nose compartment (Fig 401).
D. Remove antiskid switch cam from forward of turnbuckles.
E. Attach cords to cable terminals to facilitate stringing replacement cables.
F. Remove that portion of the forward electronics panel directly beneath control lever.
G. Release and lower center instrument panel and first officer's instrument panel.
H. Remove baseplate assembly mounting screws.
I. Disconnect baseplate assembly electrical connector and remove baseplate assembly.
J. Disconnect control lever assembly electrical connector.
K. Remove lower mounting screws.
L. Remove screw and spacer supporting wire bundle clamp.
M. Support control lever assembly and remove forward mounting screws.
N. Remove control lever assembly, pulling cables out of pulleys and floor beam. Do not pull cords all the way out.
May 20/82 32-31-11 Page 401 BOEING PROPRIETARY - Copyright . - Unpublished Work - See title page for details.
3. Prepare Landing Gear Control Lever Assembly for Installation
A. Connect ohmmeter between pins 3 and 6 of control lever electrical connector.
B. Place control lever in down position. Check that ohmmeter indicates continuity.
C. Move control lever out of down position. Check that ohmmeter indicates no continuity as lever moves out of down detent.
D. Disconnect ohmmeter.
4. Install Landing Gear Control Lever Assembly
A. Place control lever assembly in place and install forward mounting screws (Fig. 401).
B. Install lower mounting screws.
C. String cables down over pulleys and through floor beams and connect turnbuckles.
D. Assemble antiskid switch cam on cable.
E. Secure wire bundle clamp with screw and spacer.
F. Connect control lever assembly electrical connector.
G. Install baseplate assembly.
H. Connect baseplate assembly electrical connector.
I. Adjust and test control system per 32-31-0.
J. Adjust and test antiskid switch. Refer to 32-42-51.
K. Close and fasten instrument panels.
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32-31-11 Page 402 BOEING PROPRIETARY - Copyright . - Unpublished Work - See title page for details. Feb 15/72
532 Landing Gear Control Lever Installation
Feb 15/73 Figure 401 32-31-11
Page 403
BOEING PROPRIETARY - Copyright . - Unpublished Work - See title page for details.
CONTROL LEVER LOCK SYSTEM - TROUBLE SHOOTING
1. General
A. If the control lever lock system failure condition can be duplicated on the ground, then trouble shooting the control lever lock system can be done without jacking airplane or operating gear. Sensor actuating linkages can be disconnected and sensors positioned to simulate gear operation. Refer to Wiring Diagram Manual for system circuits when performing continuity checks.
B. If the control lever lock system failure condition can not be duplicated on the ground, or if electrical circuit and components and mechanical components check out OK, then Air Safety Sensor adjustment and testing must be performed (Ref 32-09-211).
C. Gear actuation control system must be correctly rigged.
D. Landing gear control lever will be left in OFF position. The following precheck items should be performed to simplify trouble-shooting system.
2. Prepare to Trouble Shoot Control Lever Lock System
A. Check that landing gear control lever is in OFF position.
B. Check that landing gear ground lock assemblies are installed (Ref 32-00-01).
C. Depressurize hydraulic system A.
D. Provide electric power to airplane. Close the LEVER LATCH & PRESS WARNING LIGHTS circuit breaker on panel P6.
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