S 034-025
(15)
Disconnect the grounding strap from the torque box.
S 034-026
(16)
Hold the torque box while you remove the fasteners on the torque box.
S 034-027
(17)
Remove the two support link rod assemblies.
S 034-028
(18)
Remove the two top and the two bottom fasteners.
S 024-029
(19)
Turn the torque box assembly counterclockwise 180° about a vertical axis.
S 024-030
(20)
Lower the torque box through the access door, 313AL (Ref 06-42-00).
TASK 27-31-16-424-062
3. Install the Torque Box
______________________
A. Consumable Materials
(1)
C00308 Corrosion Preventive Compound,
MIL-C-11796
B.
References
(1)
06-42-00/201, Empennage Access Doors and Panels
(2)
22-12-01/401, Autopilot Pitch Control Servo
(3)
24-22-00/201, Electrical Power - Control
(4)
27-00-01/201, Flight Control Cables
(5)
27-31-00/501, Elevator Control System
(6)
27-31-15/401, Elevator Aft Quadrants
(7)
27-31-17/201, Elevator Feel Unit
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27-31-16
ALL ú ú 02 Page 408 ú Jan 28/02
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
757
MAINTENANCE MANUAL
(8)
27-31-21/401, Neutral Shift and Override Mechanism
C.
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
D.
Install the Torque Box
S 214-031
(1)
Make sure the new torque box is turned counterclockwise 180° about a vertical axis from its fully installed position.
S 424-032
(2)
Lift the new torque box through the access door, 313AL
(Ref 06-42-00).
S 424-033
(3)
When the torque box is in the correct vertical position adjacent to the bulkhead, do the step that follows:
(a)
Turn the torque box clockwise 180° about a vertical axis and align it with the four bulkhead fastener locations.
S 624-034
(4)
Apply a layer of corrosion preventive compound to the two top and the two bottom fasteners.
S 434-035
(5)
Install the two bottom and the two top fasteners (Fig. 403).
S 624-037
(6)
Apply a layer of corrosion preventive compound to the fasteners for the support link rod assemblies.
S 434-036
CAUTION: MAKE SURE THE O-RINGS ARE INSTALLED IN THE TOP SUPPORT LINK ROD
_______ ASSEMBLY. O-RINGS WILL HELP PREVENT CORROSION AND NOT LET THE BOLTS RUB AGAINST THE AIRPLANE STRUCTURE. DAMAGE TO THE AIRPLANE CAN OCCUR IF THE O-RINGS ARE NOT INSTALLED.
(7) Install the two support link rod assemblies.
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27-31-16
ALL ú ú 02 Page 409 ú Jan 28/02
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
757
MAINTENANCE MANUAL
(8) S 434-038Install the captain's aft quadrant (Ref 27-31-15).
(9) S 434-039Install the aft quadrant indexer.
S 434-040
(10)
Install the first officer's aft quadrant (Ref 27-31-15) (Fig. 402).
S 434-041
(11)
Install the neutral shift and override mechanism (Ref 27-31-21).
S 434-042
(12)
Install the elevator feel unit (Ref 27-31-17).
S 434-043
(13)
Install the APCS hydraulic lines, if you removed them for access.
S 434-044
(14)
Install the APCS on the torque box assembly (3 locations) (Ref 22-12-01).
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