(2)  
Open the access door 3802 (Ref 12-31-41/201).

 (3)  
Remove the tail cone (Ref 53-53-00/401).

 (4)  
Set the horizontal stabilizer at 3 units of trim.

 (5)
Remove the autopilot elevator actuators (Ref 22-11-26/401).

 S 014-015
 S 014-016
 S 864-017
 S 034-018
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A

OUTBOARD TORQUE TUBE
RIGGING AND RESTRAINING TOOL
POWER
CONTROL
UNIT

ELEVATOR
SEE A
INDEX MARK
TAILCONE
737-300/400/500
MAINTENANCE MANUAL

INBOARD PIVOT
BRACKET
OUTBOARD PIVOT BRACKET
MOUNTING BOLT
NUT
ROD END FITTING
CHECKNUT
ELEVATOR CONTROL PUSHROD
FWD
AFT CONTROL RIG PIN E-5 QUADRANT
ELEVATOR
A
Elevator Output Torque Tube Installation
Figure 401

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A
737-300/400/500MAINTENANCE MANUAL
 S 344-021
 (6)
Remove the mounting brackets of the autopilot elevator actuators.

 S 494-019

 (7)  
Install the rig pin E-5 in the aft control quadrant.

 S 024-020

 (8)  
Remove the torque tube:

 (a)  
Disconnect the forward ends of the control pushrods from the torque tube crank.

 (b)  
Disconnect the PCU upper mounting bolts from the torque tube.

 (c)  
Let the elevator power control units turn away from the aft bulkhead until the input crank is in the bottom.

 (d)  
Remove the two pivot bolts that attach the torque tube to the inboard pivot brackets.

 (e)  
Hold the torque tube and remove the two pivot bolts that attach the torque tube to the outboard pivot brackets,

 (f)  
Remove the torque tube from the airplane.

 TASK 27-31-74-404-002
 3.  Elevator Output Torque Tube Installation________________________________________
 A. Special Tools and Equipment
 (1)  
F70207-93 Rigging Pin Kit

 (2)  
Alignment pins - 0.620 +0.004/-0.000-inch diameter, 0.96 +0.03/-0.00-inch long - (2 required)

 B.
Consumable Materials

 (1)  
D00015 Grease - BMS 3-24 (Preferred)

 (2)  
D00013 Grease - MIL-G-23827 (Optional)

 C.
References

 (1)  
12-31-41/201, Body Section 48 Access Doors and Panels

 (2)  
22-11-26/401, Autopilot Elevator Actuator

 (3)  
27-31-00/201, Elevator and Tab Control System

 (4)  
27-31-00/501, Elevator and Tab Control System

 (5)  
27-31-74/601, Elevator Output Torque Tube

 (6)  
53-53-00/401, Tail Cone

 D.
Access

 (1)  
Location Zone
 701 Area 1 Tail Compartment

 (2)  
Access Panels
 3802 Tail Cone Access Door

 E.
Procedure

 S 224-012
 (1)  
Do this task: "Elevator Output Torque Tube Wear Limits Inspection" (Ref 27-31-74/601).

 S 424-024

 (2)  
Install the bearings and alignment pins to keep the bearing components, in the inboard pivot clevis fittings of the torque tube.

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