757
MAINTENANCE MANUAL

 S 865-695
 (15)
 Put the CENTER STAB TRIM SHUTOFF switch on the P10 panel to the NORM position.

 (a)  
Make sure the stabilizer starts to move in one second.

 S 715-696
 (16)
 Release the alternate stab trim switches.

 (a)  
Make sure the stabilizer stops.

 S 865-697
 (17)
 Put the RIGHT STAB TRIM SHUTOFF switch on the P10 panel to the NORM position.

 S 715-698

 (18)
 Move one of the two alternate stab trim switches forward while you keep the other switch in the neutral position.

 (a)  
Make sure the stabilizer does not move.

 S 715-699
 (19)
 Move one of the two alternate stab trim switches aft while you keep the other switch in the neutral position.

 (a)  
Make sure the stabilizer does not move.

 S 715-700
 (20)
 Move the two alternate stab trim switches in the opposite directions (one airplane nose up and the other airplane nose down).

 (a)  
Make sure the stabilizer does not move.

 S 715-701
 (21)
 Move the two alternate stab trim switches to the opposite position. (one airplane nose down and the other airplane nose up).

 (a)  
Make sure that the stabilizer does not move.

 E.
Put the Airplane Back to its Usual Condition

 S 865-702
 (1)  
Put the RIGHT and CENTER STAB TRIM SHUTOFF switches on the P10 panel to NORM.

 (2)
Remove electrical power if it is not necessary (Ref 24-22-00/201).

 S 865-704

 (3)  
Remove the power from the right and center hydraulic systems (Ref 29-11-00/201).

 S 865-703
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 27-41-00
 ALL  ú ú 01 Page 582F ú Jan 28/01
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A

757 MAINTENANCE MANUAL
 STABILIZER TRIM CONTROL WHEEL SWITCH - REMOVAL/INSTALLATION
___________________________________________________________
 1.  General_______
 A.  This procedure contains steps to remove and install the control wheel switches for stabilizer trim operation. The steps to remove and install the captain's and first officer's control wheel switches are the same.
 B.  The control wheel switch is attached to an electrical cable that goes through the control wheel handles. If a control wheel switch is defective, the switch and cable must be replaced as an assembly. This procedure removes and installs the switch and cable as an assembly.
 TASK 27-41-01-024-001
 2.  Remove the Control Wheel Switch_______________________________
 A.  Equipment
 (1)  
Extraction/Insertion Tool - M15570-20
 (Deutsch Company, Electronics Company Division,
 700 S. Hathaway, Municipal Airport
 Banning, CA 92220)

 B.  
References

 (1)  
24-22-00/201, Electrical Power - Control

 C.  
Access

 (1)  
Location Zones
 211/212 Control Cabin

 D.  
Prepare for the Removal

 S 864-002
 (1)  
Supply electrical power (Ref 24-22-00).

 S 864-003

 (2)  
Put the RIGHT and CENTER STAB TRIM SHUTOFF valve switches on the control stand panel, P10, to the CUTOUT position.

 S 864-004

 (3)  
Open these circuit breakers on the overhead panel, P11, and attach DO-NOT-CLOSE tags:

 (a)  
11C12, STAB TRIM SHUTOFF LEFT

 (b)  
11C13, STAB TRIM SHUTOFF RIGHT

 (c)  
11H11 or 11C5, STAB TRIM CONT L

 (d)  
11H20, STAB TRIM CONT RIGHT

 E.  
Remove the Control Wheel Switch (Fig. 401)

 (1)  
Remove the medallion.

 (2)  
Remove the connectors from the control wheel hub.

 S 034-005
 S 034-006
 EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú
　
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