(8)  
Remove rigging pin.

(9)  
Remove test cable and connect potentiometer electrical connector to airplane wiring.

(10)
Install access door.

(11)
Close autopilot AC circuit breakers.

Jun 20/83 22-11-102 Page 501
BOEING PROPRIETARY - Copyright . - Unpublished Work - See title page for details.

H19310
Stabilizer Trim Potentiometer Adjustment  580 
22-11-102  Figure 501  Feb 15/80 
Page 502 
BOEING PROPRIETARY - Copyright . - Unpublished Work - See title page for details. 

ROLL CONTROL WHEEL STEERING FORCE TRANSDUCER -REMOVAL/INSTALLATION
EFFECTIVITY
SD ST-AFK, ST-AFL GJ ALL EXCEPT B-2509 and B-2510
1.  General
A.  The roll force transducer is located on the aileron drum at the bottom of the captain's control column.
2.  Equipment and Materials
A.  Shims (2) - 0.021 +0.003/-0.0 inch
3.  Remove Roll Force Transducer
A.  Open roll channel circuit breakers on load control center P6.
B.  Open lower access door 1103 (Ref Chapter 12, Access Doors and Panels).
C.  Disconnect force transducer cable from airplane wiring and clamps (Fig. 401).
D.  Unwind force transducer cable from shaft assembly spool.
E.  Remove two bolts and nuts and remove force transducer from aileron drum.
4.  Prepare to Install Roll Force Transducer
A.  Provide electrical power to the airplane and energize load control center P6.
B.  Pressurize hydraulic system B (Ref 29-12-0, Hydraulic System B - Maintenance Practices).
WARNING:  MAKE SURE ALL PERSONNEL AND OBSTRUCTIONS ARE CLEAR OF AILERON, ELEVATOR, OUTBOARD SPOILERS AND RUDDER SYSTEMS. SURFACES AND CONTROLS MAY MOVE ABRUPTLY WHEN HYDRAULIC POWER IS APPLIED.
C.  Ensure hydraulic power is applied to the aileron power control units. Center control columns and tag indicating they are not to be moved.
NOTE:  Power control units must be operative to ensure cables are aligned properly in relation to force transducer.
5.  Install Roll Force Transducer
A.  Insert shims between shaft and drum (Fig. 401). Gap setting should be 0.021 +0.003/-0.0 inch.
Jun 20/85 22-11-111 Page 401
BOEING PROPRIETARY - Copyright . - Unpublished Work - See title page for details.

H19322
Roll Force Transducer Installation  500 
22-11-111Page 402   Figure 401 BOEING PROPRIETARY - Copyright . - Unpublished Work - See title page for details.  Sep 20/81 

B.  Prior to installing new force transducer mark cable length as follows by measuring from edge of transducer clamp along cable.
NOTE: Do not disturb cable clamp on transducer.
(1)  
On 10-61072-1, -3, or -4 transducer, mark cable for length of 33.75 +0.25 inches.

(2)  
On 10-61072-6 transducers, mark cable for length of 40.75 +0.25 inches.

C.  Hold force transducer in position and install two bolts and nuts.
D.  Adjust force transducer (Ref Roll Control Wheel Steering Force Transducer - Adjustment/Test).
E.  Install lockwire on adjustable rod end of the force transducer.
F.  Remove shims.
G.  Check that gap dimensions are 0.021 +0.003/-0.0 inch.
H.  Rotate captain's control wheel full left and hold.
I.  Coil force transducer cable firmly around shaft spool (detail A).
(1)  
On 10-61072-1, -3, or -4 transducer, wrap cable around spool seven turns.

(2)  
On 10-61072-6 transducer, wrap cable around spool nine turns.

J.  Hold cable and secure cable with clamps, at cable mark.
K.  Check for free movement of control wheel in both directions.
L.  Connect force transducer to airplane wiring.
M.  Close access door.
N.  Remove control column tag and test roll control wheel steering force transducer (Ref Adjustment/Test).
500 
Oct 20/93  BOEING PROPRIETARY - Copyright . - Unpublished Work - See title page for details.  22-11-111 Page 403 

ROLL CONTROL WHEEL STEERING FORCE TRANSDUCER -ADJUSTMENT/TEST
EFFECTIVITY
GJ ALL EXCEPT B-2509 and B-2510
1.  General
A.  These procedures are intended to verify the force transducer is adjusted and operating properly. The adjustment of the force transducer is fairly critical. If not adjusted properly, the roll channel may not engage. 
2.  Roll Force Transducer Adjustment
A.  Equipment and Materials
(1)  
Test box F80218-42

(2)  
Adapter cable F80218-48

(3)  
VTVM - Hewlett Packard, Model 410C

(4)  
　
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