27-41-94
 ALL  ú ú 01 Page 509 ú Mar 12/02
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
737-300/400/500MAINTENANCE MANUAL
 STABILIZER TRIM CONTROL SWITCH - REMOVAL/INSTALLATION
_____________________________________________________
 1.  General_______
 A.  This procedure has two tasks, one for the removal and one for the installation of the stabilizer trim control switch assembly (which is referred to as the "switch assembly"). The procedure has these parts:
 (1)  
The removal of the switch assembly

 (2)  
The installation of the switch assembly.

 B.  
The switch assembly has an electrical cable which went along the control wheel handle to a terminal block in the control wheel. If a switch becomes defective, the electrical cable and the switch are replaced as an assembly.

 TASK 27-41-97-004-001
 2.  Stabilizer Trim Control Switch Removal (Fig. 401)______________________________________
 A.  Access
 (1)  
Location Zone
 101 Control Cabin, LH
 102 Control Cabin, RH

 B.  
Procedure

 S 864-002
 (1)  
Open these circuit breakers and attach DO-NOT-CLOSE tags:

 (a)  
P6-2 Circuit Breaker Panel
 1) STABILIZER TRIM CONT

 S 014-010
 (2)  
Remove the terminal block cover.

 S 024-003

 (3)  
Remove the switch assembly:

 (a)  
Disconnect the switch wires from the terminal block.

 (b)  
Remove the terminals from the wires to help the removal.

 (c)  
Disconnect the switch from the control wheel handle.

 (d)  
Attach the wire guide to the end of the electrical cable.

 (e)  
Remove the electrical cable through the core and through the switch assembly hole.

 (f)  
Disconnect the electrical cable and let the wire guide to stay in the control wheel handle.

 TASK 27-41-97-404-007
 3.  Stabilizer Trim Control Switch Installation (Fig. 401)___________________________________________
 A.  Consumable Materials
 (1)  
G01091 Powder - Talcum

 B.  
References

 (1)  
AMM 27-41-97/501, Stabilizer Trim Control Switch

 EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú

 27-41-97
 ALL  ú ú 01 Page 401 ú Mar 12/01
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A 737-300/400/500MAINTENANCE MANUAL 
CONTROL SWITCH STABILIZER TRIM  SEE  C 

SEE  B 
SEE  A  SWITCH CABLE ELECTRICAL  CONTROL SWITCH STABILIZER TRIM  FOR THESE NUMBERS IDENTIFICATION BY BLOCK AND COLOR CODE WIRES AT TERMINAL ATTACHMENT OF THESE SEE C 
HANDLE WHEEL CONTROL  INSULATOR  4  3  2  1 
SWITCH INTERPHONE SCREWS INSTALLATION SWITCH  SWITCH WIRES INTERPHONE  CONTROL WHEEL OF CABLE IN AFTER INSTALLATION CRIMP TO WIRES INSTALL AND (BACT12AC2) TERMINALS
A 
MINIMUM 0.002 INCH  TERMINAL BLOCK 
(ORANGE) WIRE NO. 1 
WIRE NO. 2 (VIOLET) 
WIRE NO. 3 (RED) 
(BLACK/ORANGE) WIRE NO. 4 
B  C 
Figure 401 Stabilizer Trim Control Switch Installation 

EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú

 27-41-97
 ALL  ú ú 01 Page 402 ú Jul 15/91
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
737-300/400/500MAINTENANCE MANUAL
 C.  Access
 (1)  
Location Zone
 101 Control Cabin, LH
 102 Control Cabin, RH

 D.  
Procedure

 S 644-012
 (1)  
Apply talcum powder to the exterior of the electrical cable.

 S 424-011

 (2)  
Install the switch assembly:

 CAUTION:_______BE CAREFUL WHEN YOU PULL THE ELECTRICAL CABLE. IF YOU APPLY TOO MUCH LOAD, YOU CAN CAUSE DAMAGE TO THE WIRE CONNECTION AT THE SWITCH.
　
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