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Oct 10/2003
D633A101-GUN
BOEING PROPRIETARY - Copyright#Unpublished Work - See title page for details
TASK 27-31-64-400-801
3. Elevator Feel and Centering Unit Installation
(Figure 401)
A. References
Reference Title
12-12-00-610-801 Hydraulic Reservoir Servicing (P/B 301)
22-11-14-820-801 Elevator Neutral Shift Sensor Adjustment (P/B 501)
22-11-24-400-801 Mach Trim Actuator Installation (P/B 401)
27-31-00-700-801 Null Procedure - Mach Trim Actuator (P/B 201)
27-31-00-700-812 Feel Force System - Test (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)
27-31-67-400-801 Elevator Feel Actuator 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)
C. Location Zones
Zone Area
318 Tail Cone Compartment - Right
D. Access Panels
Number Name/Location
318BR Tailcone Access Door
E. Centering Unit Installation
SUBTASK 27-31-64-420-001
(1) Install the centering unit [1]:
(a) Put the centering unit [1] in its position.
(b) Align the bolt installation holes in the bearing assemblies [13] with support brackets [14].
(c) Install the bolts [15] and washers [16] to attach the bearing assemblies [13] to the support
brackets [14].
(d) Install the bolt [8], washer [9], washer [10], and nut [11] to connect the micro-adjustment rod
[12] to the centering unit [1].
SUBTASK 27-31-64-420-002
(2) Do this task: Elevator Feel Actuator Installation, TASK 27-31-67-400-801.
SUBTASK 27-31-64-420-003
(3) Do this task: Mach Trim Actuator Installation, TASK 22-11-24-400-801.
SUBTASK 27-31-64-860-002
(4) Do this task: Null Procedure - Mach Trim Actuator, TASK 27-31-00-700-801.
737-600/700/800/900
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SUBTASK 27-31-64-820-002
(5) Adjust the output rod [2]:
(a) Align the bolt hole of the output rod [7] and bolt hole of the crank [2].
(b) If the alignment difference is more that 0.06 inch (1.5 millimeters), then do these steps:
1) Turn the sleeve on the output rod [7] until you can install the bolt [3] easily.
NOTE: Always turn the clevis and the sleeve in the same direction and number of
threads are equal in the two parts.
SUBTASK 27-31-64-420-004
CAUTION: DO NOT TIGHTEN THE OUTER BOLT OF THE BOLT [3] AGAIN AFTER YOU TIGHTEN
THE NUT [7]. YOU CAN CAUSE DAMAGE TO THE EQUIPMENT.
(6) Install the bolt [3], washer [4] (under bolt), washer [5] (under nut), and nut [6] to connect the
output rod [7] to the crank [2].
(a) Tighten the outer bolt of the bolt [3] to 75-85 pound-inches (8.5-9.6 newton-meters).
(b) Tighten the nut [6] to 15-20 pound-inches (1.7-2.3 newton-meters).
SUBTASK 27-31-64-080-001
(7) Remove the rig pin E-5 of the rig pin kit, SPL-1585 from the elevator aft control quadrant.
SUBTASK 27-31-64-820-003
(8) Do this task: Elevator Neutral Shift Sensor Adjustment, TASK 22-11-14-820-801.
SUBTASK 27-31-64-860-003
(9) Do this task: Put the Elevator Systems A and B Back to the Condition Before the Pressure
Removal, TASK 27-31-00-840-802.
SUBTASK 27-31-64-080-002
(10) Remove the "DO-NOT-OPERATE" tags from the control columns.
SUBTASK 27-31-64-710-001
(11) Move the control column full forward and full aft.
(a) Make sure the control column moves freely and smoothly.
SUBTASK 27-31-64-710-002
(12) Do this task: Feel Force System - Test, TASK 27-31-00-700-812.
SUBTASK 27-31-64-790-001
(13) Make sure that there is no hydraulic leakage at the elevator feel actuator.
F. Put the Airplane Back to Its Usual Condition
SUBTASK 27-31-64-410-001
(1) Install this access panel:
Number Name/Location
318BR Tailcone Access Door
SUBTASK 27-31-64-610-001
(2) If it is necessary, do this task: Hydraulic Reservoir Servicing, TASK 12-12-00-610-801.
------------------------- END OF TASK ---------------------------
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