H. Put the Airplane Back to Its Usual Condition
SUBTASK 27-11-41-410-001
(1) Close this access panel:
Number Name/Location
112A Forward Access Door
SUBTASK 27-11-41-860-003
(2) Do this task: Put the Aileron Hydraulic Systems A and B Back to the Condition Before
Pressure Removal, TASK 27-11-00-860-802.
------------------------- END OF TASK ---------------------------
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AILERON CONTROL WHEEL DRUM - REMOVAL/INSTALLATION
1. General
A. This procedure has these tasks:
(1) A removal of the aileron control wheel drum
(2) An installation of the aileron control wheel drum.
B. The aileron control wheel drum is referred to as the "control wheel drum" in this procedure.
C. The control wheel drum is installed at the base of the captain’s control column.
TASK 27-11-51-000-801
2. Aileron Control Wheel Drum Removal
(Figure 401)
A. References
Reference Title
27-11-00-860-801 Remove Pressure from the Aileron Hydraulic Systems A and B
(P/B 201)
B. Tools/Equipment
NOTE: When more than one tool part number is listed under the same "Reference" number, the
tools shown are alternates to each other within the same airplane series. Tool part numbers
that are replaced or non-procurable are preceded by "Opt:", which stands for Optional.
Reference Description
SPL-1585 Kit - Rigging Pins, All Systems
(Part #: F70207-109, Supplier: 81205, A/P Effectivity: 737-600, -700,
-700C, -700ER, -700QC, -800, -900, -900ER, -BBJ)
C. Location Zones
Zone Area
112 Area Forward of Nose Landing Gear Wheel Well
133 Main Landing Gear Wheel Well, Body Station 663.75 to Body Station
727.00 - Left
134 Main Landing Gear Wheel Well, Body Station 663.75 to Body Station
727.00 - Right
211 Flight Compartment - Left
212 Flight Compartment - Right
D. Access Panels
Number Name/Location
112A Forward Access Door
E. Prepare for the Removal
SUBTASK 27-11-51-010-001
(1) Open this access panel:
Number Name/Location
112A Forward Access Door
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SUBTASK 27-11-51-860-001
WARNING: MAKE SURE THE DOWNLOCK PINS ARE INSTALLED ON ALL THE LANDING GEARS.
WITHOUT THE DOWNLOCK PINS, THE LANDING GEARS COULD RETRACT AND
CAUSE INJURIES TO PERSONS AND DAMAGE TO EQUIPMENT.
(2) Do this task: Remove Pressure from the Aileron Hydraulic Systems A and B,
TASK 27-11-00-860-801.
SUBTASK 27-11-51-860-002
(3) Put the captain’s and first officer’s control wheels in the neutral position.
SUBTASK 27-11-51-480-001
(4) Install the rig pins A/S-1 and A/S-1A, from the rig pin kit, SPL-1585, in the aileron transfer
mechanism.
(a) Make sure that the rig pin A/S-1 is fully in the aileron transfer mechanism.
(b) Hold the rig pin A/S-1 to make sure it does not fall out.
SUBTASK 27-11-51-480-002
(5) Install the rig pin A/S-15, from the rig pin kit, SPL-1585, in the aileron trim mechanism.
F. Aileron Control Wheel Drum Removal
SUBTASK 27-11-51-020-001
(1) Disconnect the cable ACBA [1] and cable ACBB [2] at the turnbuckles [3].
(a) Attach identification tags on the disconnected cables for easier assembly.
SUBTASK 27-11-51-020-002
(2) Disconnect the cable AA [4] and cable AB [6] at the turnbuckles [5].
(a) Attach identification tags on the disconnected cables for easier assembly.
SUBTASK 27-11-51-020-003
(3) Remove the cable guide [16] from the control wheel drum assembly [19].
(a) Remove the screws [17] from the cable guide [16].
(b) Remove the cable guide [16].
SUBTASK 27-11-51-020-004
(4) Remove the control wheel drum assembly [19]:
(a) Remove the screw [35] and clamp [37] that attach the rudder pedal adjustment crank to the
control wheel drum assembly [19].
(b) Remove the screws [24], [27], [39] and clamps [26], [29] and [41].
(c) Disconnect the electrical connectors [15] and [30] from the roll force transducer [18].
(d) Remove the screws [31], washers [32] and nuts [34] to remove the wiring harness [38] from
bracket on the control wheel drum assembly [19].
(e) Disconnect the electrical connector [33] from the aileron transmitter.
(f) Remove the nuts [14], washers [13], and bolts [12] that attach the control wheel drum
assembly [19] to the airplane structure.
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