22-11-81
 ú ú 01 Page 402 ú Jul 15/95
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
737-300/400/500MAINTENANCE MANUAL
 S 024-004
 (3)  Do these steps to remove the servo:
 (a)  
Disconnect the electrical connector from the servo.

 (b)  
Remove the mounting bolts.

 (c)  
Remove the servo.

 TASK 22-11-81-404-005
 3.  Autopilot Stabilizer Trim Servo Installation (Fig. 401)____________________________________________
 A. References
 (1)  
12-31-41/201, Body Section 48 Access Doors and Panels

 (2)  
22-11-81/501, Autopilot Stabilizer Trim Servo - Adjustment/Test

 B. Access
 (1)  
Location Zone
 704 Tail Cone

 (2)  
Access Panel
 3701L Stabilizer Trim Access Panel

 C. Procedure
 S 424-006
 (1)  Do these steps to install the servo:
 (a)  
Clean the mounting surface.

 (b)  
Put the servo in the position.

 (c)  
Install the mounting bolts.

 (d)  
Connect the electrical connector to the servo assembly.

 D. Autopilot Stabilizer Trim Servo Test
 S 864-007
 (1)  Close these circuit breakers and remove the DO-NOT-CLOSE tags:
 (a)  
P6 Circuit Breaker Panel 1) AUTO FLT CONT SYS B MACH TRIM AC 2) AUTO FLT CONT SYS B MACH TRIM DC 3) AFDS MCP CRS-2 4) AUTO FLT CONT SYS B SNSR EXC AC 5) AUTO FLT CONT SYS B FCC DC 6) AUTO FLT CONT SYS B ENGAGE INTLK B 7) AUTO FLT CONT SYS B WARN LIGHT BAT

 (b)  
P18 Circuit Breaker Panel 1) AUTO FLT CONT SYS A MACH TRIM AC 2) AUTO FLT CONT SYS A MACH TRIM DC 3) AFDS MCP DC 4) Airplanes with mechanical aileron force limiter:

 AFDS AIL FORCE LIM 5) AUTO FLT CONT SYS A SNSR EXC AC 6) AUTO FLT CONT SYS A FCC DC 7) AUTO FLT CONT SYS A ENGAGE INTLK A
 EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. AIRPLANES WITH AUTOPILOT TRIM SERVO ú

 22-11-81
 ú ú 02 Page 403 ú Mar 12/00
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A 737-300/400/500MAINTENANCE MANUAL
 8)  AUTO FLT CONT SYS A WARN LIGHT BAT
 (2)  S 714-008Do this task: "Autopilot Stabilizer Trim Servo Test" (Ref 22-11-81/501).
 (3)  S 414-009Install the 3701L stabilizer trim access panel (Ref 12-31-41/201).

 EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. AIRPLANES WITH AUTOPILOT TRIM SERVO ú

 22-11-81
 ú ú 02 Page 404 ú Jul 15/95
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
737-300/400/500MAINTENANCE MANUAL
 AUTOPILOT STABILIZER TRIM SERVO FUNCTION - ADJUSTMENT/TEST
_____________________________________________________________
 1.  General________
 A.  This procedure contains one task. This task makes sure that the autopilot stabilizer trim servo operates correctly, and that the autopilot trim function operates correctly. You should do this test after you install an autopilot stabilizer trim servo or a primary stabilizer trim actuator.
 TASK 22-11-81-715-001
 2.  Autopilot Stabilizer Trim Servo Test_____________________________________
 A.  References
 (1)
24-22-00/201, Manual Control

 (2)
29-15-00/201, Hydraulic Systems A, B, and Standby

 B.  Access
 (1)  Location Zone
 101 Control Cabin - Left
 102 Control Cabin - Right

 C.  Procedure
 S 865-002
 (1) Supply electrical power (Ref 24-22-00/201).
 S 865-003
 WARNING: MAKE SURE THAT PERSONS AND EQUIPMENT ARE CLEAR OF ALL
_______ CONTROL SURFACES BEFORE YOU SUPPLY HYDRAULIC POWER. AILERONS, RUDDER, ELEVATORS, FLAPS, SLATS, SPOILERS, LANDING GEAR, AND THRUST REVERSERS CAN MOVE QUICKLY WHEN YOU SUPPLY HYDRAULIC POWER. THIS CAN CAUSE INJURY TO PERSONS OR DAMAGE TO EQUIPMENT.
 (2)
Supply hydraulic power (Ref 29-15-00/201).

 (3)
　
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