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compartment.
SUBTASK 27-31-51-420-003
(4) Install the ring assemblies and dust seals:
(a) Install the forward dust seal [19], aft dust seal [18], forward ring assembly [14], and aft ring
assembly [17] with the screws [15] and washers [16].
CAUTION: DO NOT HOLD THE DUST CAP TOO TIGHTLY AGAINST THE WIRE BUNDLE. IT
CAN CAUSE DAMAGE TO THE ELECTRICAL WIRES.
(b) If it is necessary, adjust the dust cap [3] to set the edge of the dust seals lightly up against
the dust cap [3].
1) Loosen the clamp [2] to adjust the dust cap [3].
(c) Make sure the gap between the two dust seals is 0.060 inch (1.52 millimeters).
(d) Fill the hole between the notch in the dust seals and the cutout in the floor with sealant,
A00247.
SUBTASK 27-31-51-080-001
(5) Remove the rig pin E-1 from the left forward quadrant.
SUBTASK 27-31-51-410-001
(6) Close this access panel:
Number Name/Location
112A Forward Access Door
G. Control Column Installation Test
SUBTASK 27-31-51-860-003
(1) Remove the safety tags and close these circuit breakers:
CAPT Electrical System Panel, P18-2
Row Col Number Name
E 7 C01208 STALL WARN ASYM MODE
F/O Electrical System Panel, P6-2
Row Col Number Name
B 10 C00207 FLIGHT CONTROL STAB TRIM CONT
B 13 C00363 FLIGHT CONTROL SHUTOFF VALVES FLT CONT
737-600/700/800/900
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Row Col Number Name
C 13 C01074 FLIGHT CONTROL SHUTOFF VALVES FLT CONT
D 10 C00840 FLIGHT CONTROL STAB TRIM ACTUATOR
SUBTASK 27-31-51-710-001
(2) Do a check of the control column:
(a) Move the control column full forward then full aft.
1) Make sure the control column operates correctly and smoothly.
(b) Turn the control wheel through full travel.
1) Make sure the control wheel operates correctly and smoothly.
SUBTASK 27-31-51-710-006
(3) Do this task: Control Column Travel and Centering - Test, TASK 27-31-00-700-808.
SUBTASK 27-31-51-710-007
(4) Do this task: Manual Mode - Test, TASK 27-31-00-700-807.
SUBTASK 27-31-51-710-008
(5) Do this task: Elevator Travel Limit - Test, TASK 27-31-00-700-804.
SUBTASK 27-31-51-860-005
(6) Do this task: Supply Electrical Power, TASK 24-22-00-860-811.
SUBTASK 27-31-51-710-003
(7) Do the operational test of the PTT switch in this task: Control Wheel PTT Switch Installation,
TASK 23-51-04-400-801.
SUBTASK 27-31-51-710-004
(8) Do a test of the stabilizer trim control switch on the control wheel:
(a) Move the STAB TRIM CUTOUT switch to the NORMAL position.
(b) Move the STAB TRIM switches to APL NOSE UP and then to APL NOSE DOWN.
1) Make sure the stabilizer moves correctly.
SUBTASK 27-31-51-740-001
(9) Do a test of the autopilot disengage switch on the control wheel:
(a) Push the CMD A or CMD B autopilot engage switch on the mode control panel to engage
the autopilot.
1) Make sure that the CMD A or CMD B autopilot engage switch light comes on.
(b) Push the captain or first officer autopilot disengage switch on the control wheel to
disengage the autopilot.
1) Make sure that the A/P warning lights flash.
2) Make sure that the A/P disengage warning sound comes on.
3) Push the captain or first officer autopilot disengage switch again.
a) Make sure that the A/P warning lights go off.
b) Make sure that there is no A/P disengage warning sound.
------------------------- END OF TASK ---------------------------
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CONTROL COLUMN SUPPORT BEARING - REMOVAL/INSTALLATION
1. General
A. This procedure has these tasks:
(1) A removal of a control column support bearing
(2) An installation of a control column support bearing.
B. The control column support bearing is referred to as "support bearing" in this procedure.
C. the support bearing includes the forward quadrant connector, bearing housing, shim, and bearing.
D. This procedure is applicable for the support bearings on the captain’s and first officer’s control
column.
TASK 27-31-54-000-801
2. Control Column Support Bearing Removal
(Figure 401, Figure 402)
A. References
Reference Title
27-31-00-800-802 Remove Pressure from the Elevator Hydraulic Systems A and B
(P/B 201)
27-31-51-000-801 Control Column - Removal (P/B 401)
B. Tools/Equipment
NOTE: When more than one tool part number is listed under the same "Reference" number, the
　
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