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ELEVATOR OUTPUT TORQUE TUBE - REMOVAL/INSTALLATION
1. General
A. This procedure has these tasks:
(1) A removal of the elevator output torque tube
(2) An installation of the elevator output torque tube.
B. The elevator output torque tube is referred to as the "torque tube" in this procedure.
TASK 27-31-74-000-801
2. Elevator Output Torque Tube Removal
(Figure 401)
A. References
Reference Title
22-11-26-000-801 Autopilot Elevator Actuator Removal (P/B 401)
27-31-00-800-802 Remove Pressure from the Elevator Hydraulic Systems A and B
(P/B 201)
53-53-00-000-801 Tailcone Removal (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
315 APU Compartment - Left
316 APU Compartment - Right
D. Prepare for the Removal
SUBTASK 27-31-74-860-001
(1) Do this task: Remove Pressure from the Elevator Hydraulic Systems A and B,
TASK 27-31-00-800-802.
SUBTASK 27-31-74-020-001
(2) Do this task: Tailcone Removal, TASK 53-53-00-000-801.
SUBTASK 27-31-74-860-002
(3) Use the control trim wheel to set the horizontal stabilizer to 4 units of trim.
SUBTASK 27-31-74-020-002
(4) Do this task: Autopilot Elevator Actuator Removal, TASK 22-11-26-000-801.
E. Torque Tube Removal
(Figure 401)
SUBTASK 27-31-74-020-003
(1) Remove the mounting bracket [31] of the elevator autopilot actuators:
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(a) Remove the bolts [27] and washers [28] from the mounting bracket [31].
(b) Remove the bolts [29] and washers [30] from the mounting bracket [31].
(c) Remove the nuts [35], washers [34], washers [33], and bolts [32] from the mounting bracket
[31].
(d) Remove the nuts [39], washers [38], washers [37], and bolts [36] from the mounting bracket
[31].
(e) Remove the mounting bracket [31] from the airplane.
SUBTASK 27-31-74-480-001
(2) Install the rig pin E-5 from the rig pin kit, SPL-1585 in the elevator aft control quadrant.
SUBTASK 27-31-74-020-004
(3) Remove the torque tube assembly [1]:
(a) Remove the nuts [25], washers [24], nuts [23], washers [22], and bolts [26] to disconnect the
two elevator control pushrods [4] from the torque tube assembly [1].
(b) Remove the nuts [9], washers [8], washers [7], and bolts [6] to disconnect the two elevator
power control units [5] from the torque tube assembly [1].
(c) Move the elevator power control units [5] away from the aft bulkhead until the input cranks
are in the bottom.
(d) At each end of the torque tube assembly [1], remove the nuts [20], washers [21], nuts [15],
washers [14], bolts [11], bushings [12], and bushings [13] to disconnect the torque tube
assembly [1] from the two inboard pivot brackets [2] and two reaction links [10].
(e) At each end of the torque tube assembly [1], remove the nuts [17], washers [18], washers
[19], and bolts [16] to disconnect the torque tube assembly [1] from the two outboard pivot
brackets [3].
(f) Remove the torque tube assembly [1] from the airplane.
------------------------- END OF TASK ---------------------------
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Elevator Output Torque Tube Installation
Figure 401 (Sheet 1 of 4)/27-31-74-990-801
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Elevator Output Torque Tube Installation
Figure 401 (Sheet 2 of 4)/27-31-74-990-801
737-600/700/800/900
AIRCRAFT MAINTENANCE MANUAL
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Elevator Output Torque Tube Installation
Figure 401 (Sheet 3 of 4)/27-31-74-990-801
737-600/700/800/900
　
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