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NOTE: The bolt assembly [112] is installed through the circular access hole in the
tailcone.
2) Tighten the nut [111] to 500 - 600 pound-inches (56.5 - 67.8 newton-meters).
CAUTION: DO NOT TIGHTEN THE NUT [111] AGAIN AFTER YOU TIGHTEN THE NUT
[110], YOU CAN CAUSE DAMAGE TO EQUIPMENT.
3) Install the nut [110].
4) Tighten the nut [110] to 150 - 220 pound-inches (17.0 - 24.9 newton-meters).
SUBTASK 27-31-11-080-003
(3) If you used the sling, SPL-2034 to support the elevator assembly, do the following to remove the
sling, SPL-2034 from the elevator installation [1] (Figure 403):
(a) Remove the fasteners to disconnect the forward sling fittings from the elevator
installation [1].
(b) Remove the forward sling fittings from the elevator installation [1].
(c) Install the bolts [3] on the elevator installation [1].
(d) Remove the aft sling fitting from the elevator installation [1].
SUBTASK 27-31-11-860-009
(4) Remove the safety tag and close this circuit breaker:
CAPT Electrical System Panel, P18-2
Row Col Number Name
C 8 C00544 FLIGHT RECORDER POSITION SENSOR
SUBTASK 27-31-11-820-008
(5) Do this task: Elevator Control Pushrods - Adjustment, TASK 27-31-00-820-802.
SUBTASK 27-31-11-700-001
(6) Do this task: Input Rods of the Elevator Power Control Unit - Adjustment,
TASK 27-31-00-820-803.
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SUBTASK 27-31-11-700-002
(7) Do this task: Elevator Tab Pushrods - Adjustment, TASK 27-31-00-820-805.
SUBTASK 27-31-11-820-009
(8) Do this task: Elevator Position Transmitter Installation Test, TASK 31-31-51-700-801.
SUBTASK 27-31-11-710-023
(9) Do this task: Manual Mode - Test, TASK 27-31-00-700-807.
NOTE: After completing the Manual Mode Test, and while the hydraulics are still pressurized,
check the hydraulic connection on the elevator tab mechanism actuator for hydraulic
fluid leaks.
SUBTASK 27-31-11-710-013
(10) Do this task: Elevator Surface Friction and Balance - Test, TASK 27-31-00-700-802.
SUBTASK 27-31-11-710-014
(11) Do this task: Elevator Travel Limit - Test, TASK 27-31-00-700-804.
SUBTASK 27-31-11-710-015
(12) Do this task: Elevator Output Torque Tube Buss Linkage - Test, TASK 27-31-00-700-805.
SUBTASK 27-31-11-710-016
(13) Do this task: Elevator Tab Linkage - Test, TASK 27-31-00-700-806.
SUBTASK 27-31-11-710-017
(14) Do this task: Control Column Travel and Centering - Test, TASK 27-31-00-700-808.
SUBTASK 27-31-11-700-003
(15) Do this task: Control Column Power Force - Test, TASK 27-31-00-700-809.
SUBTASK 27-31-11-700-004
(16) Do this task: Elevator Power-Off Flight - Test, TASK 27-31-00-710-803.
NOTE: You may not need to do a power-off flight test, depending on which systems have been
disturbed. To see if you need to do a flight test, check the requirements in the
"General" section at the beginning of the power-off flight test section.
G. Put the Airplane Back to Its Usual Condition
SUBTASK 27-31-11-410-006
(1) Install this access panel:
Number Name/Location
318BR Tailcone Access Door
SUBTASK 27-31-11-410-007
(2) Close this access panel:
Number Name/Location
311BL Stabilizer Trim Access Door
SUBTASK 27-31-11-410-008
(3) For the left elevator, install this access panel:
Number Name/Location
333BB Horizontal Stabilizer, Access Panel, Trailing Edge
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SUBTASK 27-31-11-410-009
(4) For the right elevator, install these access panels:
Number Name/Location
333BB Horizontal Stabilizer, Access Panel, Trailing Edge
343AB Horizontal Stabilizer, Gap Cover - H. Stab. to Body
SUBTASK 27-31-11-710-020
(5) Do this task: Elevator Power-Off Flight - Test, TASK 27-31-00-710-803.
------------------------- END OF TASK ---------------------------
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ELEVATOR POWER CONTROL UNIT - REMOVAL/INSTALLATION
1. General
A. This procedure has these tasks:
(1) A removal of an elevator power control unit (PCU)
(2) An installation of an elevator PCU.
B. This procedure is applicable for the left and right elevator PCUs.
　
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