S 494-008
(7)
Install rig pin E/ST6 in the base of the control column (Fig. 403).
S 494-009
(8)
Install rig pin E/ST7 in the aft quadrant indexer (Fig. 402).
E.
Remove the Quadrant/Tension Regulator (Fig. 403)
NOTE: A tension regulator is installed on the captain's forward quadrant
____
only.
S 494-037
(1) QUADRANTS WITH A TENSION REGULATOR; install the cable tension relief holder tool in the forward end of the tension regulator.
NOTE: When you remove the tension in the body cables equally, the
____ tension regulator springs will extend and push the crosshead forward. The cable tension relief holder tool will prevent the release of the crosshead when you loosen the body cables.
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A 757 MAINTENANCE MANUAL
(2) S 034-012Loosen the body cables at the aft turnbuckles equally by small increments and release the tension equally in the cables.
NOTE:____ Keep the disconnected cables tight to keep them on the pulleys correctly and properly aligned. If you let the cables go loose, then you must do a full inspection of the cables.
(3) S 034-013Disconnect the cables from the quadrant/tension regulator (Fig. 403).
(4) S 494-014Attach tags to the cables to identify them for subsequent installation.
(5) S 034-015Disconnect the control rod from the quadrant/regulator crank (View A-A).
NOTE:____ You can lower the crank to disconnect the control rod , if it is necessary. If you must lower the crank, loosen the bolts that hold the crank to the splined shaft on the quadrant/tension regulator (Detail B).
(6) S 034-016Remove the two bolts, nuts, and washers that hold the frame assembly to the airplane structure.
NOTE:____ The washers on the outboard bolt are installed as shims. During subsequent installation, you must put the washers in the same positions that you removed them from (Fig. 403).
(7) S 034-017Remove the four bolts that hold the bottom of the housing for the quadrant/tension regulator to the airplane structure.
(8) S 034-018Remove the quadrant/tension regulator and the frame assembly together.
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A
757 MAINTENANCE MANUAL
S 034-019
(9) Remove the nut and washer that holds the frame assembly to the upper shaft of the quadrant/tension regulator.
NOTE: Be careful when you remove and install the nut on the upper
____ shaft; the shaft is made of alumninum.
The frame assembly that you removed will be installed with a new quadrant/tension regulator in the location that it was removed from.
S 024-020
(10) Remove the quadrant/tension regulator.
TASK 27-31-12-424-021
3. Install the Quadrant/Tension Regulator
______________________________________
A. References
(1)
06-41-00/201, Fuselage Access Doors and Panels
(2)
06-42-00/201, Empennage Access Doors and Panels
(3)
27-31-00/501, Elevator Control System.
B.
Access
(1)
Location Zones 113/114 Area Forward of NLG Wheel Well 211/212 Control Cabin 313/314 Stabilizer Center Section Compartment
(2)
Access Panels
113AL Forward Equipment Bay
313AL Elevator Aft Quadrants
C.
Install the Quadrant/Tension Regulator (Fig. 403)
NOTE: A tension regulator is installed on the captain's forward quadrant
____
only.
S 424-022
(1)
Do the steps that follow to attach the frame assembly to the new quadrant/tension regulator:
(a)
Carefully install the nut and washer in the upper shaft to attach the frame assembly to the new quadrant/tension regulator.
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