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 27-31-15
 ALL  ú ú 01 Page 406 ú Jan 28/02
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
757 MAINTENANCE MANUAL
 S 024-023
 (12)
 Remove the first officer's aft quadrant and torque tube.

 S 034-024

 (13)
 Remove the indexer bracket on the aft quadrant.

 S 034-025

 (14)
 Remove the two fasteners that hold the captain's aft quadrant and torque tube to the support structure of the torque box.

 S 024-026

 (15)
 Remove the captain's aft quadrant and torque tube.

 TASK 27-31-15-424-027
 3. Install the Aft Quadrant
________________________
 A. Equipment
 (1)  
Removal Tool, Decentering Springs, Elevator - B27060-1

 B.
Consumable Materials

 (1)  
D00633 Grease, Corrosion Preventive - BMS 3-33 (recommended)

 (2)  
D00015 Grease, Corrosion Preventive - BMS 3-24 (optional)

 C.
References

 (1)  
06-42-00/201, Empennage Access Doors and Panels

 (2)  
24-22-00/201, Electrical Power - Control

 (3)  
27-31-00/501, Elevator Control System

 (4)  
27-31-03/401, Asymmetry Limiter Actuator

 D.
Access

 (1)  
Location Zones 211/212 Control Cabin 311/312 Area Aft of Pressure Bulkhead to BS 1787.45 313/314 Stabilizer Center Section Compartment

 (2)  
Access Panels
 311AL Forward Stabilizer Compartment
 313AL Elevator Aft Quadrants

 E.
Install the Elevator Aft Quadrants (Fig. 402)

 NOTE: You must apply a layer of corrosion preventive grease on all
____ fasteners, bushings, and bearings that will be installed at movable joints.
 S 434-028
 (1)  
Install the two fasteners that attach the captain's aft quadrant and torque tube to the support structure of the torque box and tighten the nuts as follows:

 (a)  
Tighten the inner nut to 50-60 pound-inches (5.6-6.7 newton-meters).

 EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú

 27-31-15
 ALL  ú ú 01 Page 407 ú May 28/02
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A

757
MAINTENANCE MANUAL

 (b)  Tighten the outer nut to 10 pound-inches (1.1 Nm). NOTE: Do not try to tighten the inner nut again.
____
 (2)  S 434-029Install the indexer bracket on the aft quadrant.
 (3)  S 434-030Install the three fasteners to attach the first officer's aft quadrant and torque tube to the captain's aft quadrant and torque tube.
 (4)  S 434-031Install the two cam springs on the override mechanism.
 (5)  S 434-032Install the asymmetry limiter actuator (Ref 27-31-03).
 (6)  S 094-033Remove the identification tags and connect the captain's and the first officer's elevator control cables to the aft quadrants.
 (7)  S 434-034Connect the left and right output control rods to the output arms on the aft quadrant.
 (8)  S 434-035Connect the two control rods for the elevator feel unit to the aft quadrant flanges.
 (9)  S 434-036Use the spring removal tool to install the four decentering springs on the elevator feel unit.
 S 434-037

 (10)
 Connect the three control rods for the autopilot pitch control servo (APCS) to the aft quadrant flanges.

 S 094-038

 (11)
 Remove rig pins E/ST6, E/ST8 and E/ST9.

 S 824-039

 (12)
 Do the adjustment for the elevator control system (Ref 27-31-00).

 S 714-040

 (13)
 Do the operational test for the elevator control system (Ref 27-31-00).

 EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú

 27-31-15
　
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