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Control Column Support Bearing Installation
Figure 402 (Sheet 3 of 5)/27-31-54-990-802
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Control Column Support Bearing Installation
Figure 402 (Sheet 4 of 5)/27-31-54-990-802
737-600/700/800/900
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EFFECTIVITY
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Page 408
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Control Column Support Bearing Installation
Figure 402 (Sheet 5 of 5)/27-31-54-990-802
737-600/700/800/900
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EFFECTIVITY
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TASK 27-31-54-400-801
3. Control Column Support Bearing Installation
(Figure 401, Figure 402)
A. References
Reference Title
27-31-00-820-801 Elevator Control Cables EA and EB and Pitch Force Transducers -
Adjustment (P/B 501)
27-31-00-840-802 Put the Elevator Systems A and B Back to the Condition Before the
Pressure Removal (P/B 201)
27-31-51-400-801 Control Column - Installation (P/B 401)
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)
SPL-1747 Set - Support, Forward Elevator Control Quadrant
(Part #: C27036-1, 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
211 Flight Compartment - Left
212 Flight Compartment - Right
318 Tail Cone Compartment - Right
D. Access Panels
Number Name/Location
112A Forward Access Door
318BR Tailcone Access Door
E. Control Column Support Bearing Installation
SUBTASK 27-31-54-420-001
(1) Install the bearing [12] in the bearing housing [15]:
(a) Put the bearing [12] at the right angle of the bearing housing [15].
(b) Move the bearing [12] in the bearing housing [15] slots. Turn the bearing [12] to the correct
position.
SUBTASK 27-31-54-420-002
(2) Install the bearing housing [15]:
(a) Put the bearing housing [15] and the shim [8] against the structure.
(b) Install the upper bolts [10], washers [9], and nuts [7] that attach the bearing housing [15] to
the structure.
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(c) Install the lower bolts [13], washers [14], washers [16], and nuts [17] on the bearing housing
[15].
SUBTASK 27-31-54-420-003
(3) Install the forward control quadrant assembly [2] to the support bearing:
(a) Install the forward control connector [11] in the bearing housing [15].
(b) Align the spines of the elevator forward control quadrant assembly [2] with the forward
quadrant connector [11].
(c) Install inboard couplings [6] with the bolts [3], washers [4], and nuts [5].
(d) Do these steps to make the clearances equal at each end of each inboard coupling [6]:
1) Tighten the bolts [3] to 50 pound-inches (5.7 newton-meters) of torque.
2) Tighten the bolt [3] and then the other to 50-70 pound-inches (5.7-7.9 newton-meters) in
approximately 10 pound-inch (1.1 newton-meters) increments until you get the
clearances equal to +/- 0.03 inch (+/- 0.76 millimeter) of each other.
(e) Adjust the shim [8] below the bearing housing [15]:
1) Make sure the clearance between the forward quadrant connector [11] and inner race
of the bearing [12] is 0.01-0.03 inch (0.25-0.76 millimeter).
2) Make sure the clearance between lower chord of the floor beam and each side of the
forward control quadrant assembly [2] is 0.06 inch (1.5 millimeters) minimum through
the full travel.
3) If necessary, add or remove shims [8] under the bearing housing [15].
SUBTASK 27-31-54-480-004
(4) Remove the set, SPL-1747 from the forward control quadrant assembly [2].
　
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