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CFM56 ENGINES
737-300/400/500/ /MAINTENANCE MANUAL ////////////////////////
AUTOTHROTTLE TORQUE SWITCH MECHANISM - REMOVAL/INSTALLATION
___________________________________________________________
 1.  General
_______
 A.  This procedure contains two tasks. The first task removes the autothrottle torque switch mechanism. The second task installs the autothrottle torque switch mechanism.
 B.  In this procedure the autothrottle torque switch mechanism is referred to as the torque switch mechanism.
 TASK 76-11-03-024-001-C00
 2.  Remove the Autothrottle Torque Switch Mechanism
_______________________________________________
 A.  References
 (1)  
AMM 12-31-11/201, Body Section Doors and Panels

 (2)  
AMM 27-62-04/401, Engine Throttle Switches

 (3)  
AMM 31-26-11/401, Thrust Lever Actuated Landing Gear Warning Switches

 (4)  
AMM 76-11-04/201, Engine Control Cables

 B.  Access
 (1)  
Location Zone
 205 Electronic Compartment

 (2)  
Access Panel
 1201 Electronic Equipment Access Door

 

 C.  Prepare to Remove the Torque Switch Mechanism
 S 864-003-C00
 (1)  Open these circuit breakers and attach DO-NOT-CLOSE tags:
 (a)  P18-1 Panel
 1) AUTOTHROTTLE AC
 2) AUTOTHROTTLE DC

 S 014-004-C00
 (2)  Open the electronic equipment access door No. 1201
 (AMM 12-31-11/201).

 D.  Remove the Torque Switch Mechanism
 S 494-005-C00
 (1)  Install cable clamps on the cables.
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 76-11-03
 ALL  ú ú C02 Page 401 ú Nov 15/98
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
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CFM56 ENGINES
737-300/400/500/ /MAINTENANCE MANUAL ////////////////////////
SEE A
TORQUE SWITCH
MECHANISM

FWD TORQUE SWITCH LEADS DOWEL PIN
THROTTLE SWITCHES
THRUST
T1A CONTROL
A
CABLES T1B
TORQUE SWITCH MECHANISM
A
THRUST  CABLE GUARD
T2B
IDLER
CONTROL
PULLEY
T2A
CABLES  ACTUATOR
SEE B
SUPPORT
A
STRUCTURE
ATTACH BOLT FORTHE TORQUE SWITCH MECHANISM (4 LOCATIONS)
ACTUATOR ATTACH SCREW (4 LOCATIONS)
B
Autothrottle Torque Switch Mechanism Installation
Figure 401 (Sheet 1)

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 76-11-03
 ALL  ú ú C01 Page 402 ú Mar 15/92
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
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CFM56 ENGINES
737-300/400/500/ /MAINTENANCE MANUAL ////////////////////////
TB CABLE

TORQUE SWITCH
GROOVE 2
GROOVE 4
LOWER (OUTPUT) QUADRANT
ENGINE NO. 1 ENGINE NO. 2
A-A A-A

UPPER (INPUT) QUADRANT
GROOVE 1
GROOVE 3
CABLE TERMINAL RETAINER

Autothrottle Torque Switch Mechanism Installation
Figure 401 (Sheet 2)

EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú

 76-11-03
 ALL  ú ú C01 Page 403 ú Mar 15/92
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
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CFM56 ENGINES
737-300/400/500/ /MAINTENANCE MANUAL ////////////////////////
S 034-006-C00
 (2)  Disconnect the T( )A and T( )B cables at the turnbuckles forward and aft of the torque switch mechanism (AMM 76-11-04/201). (a) Tag the cables to make sure the installation is correct.
 S 034-007-C00
 (3)  Disconnect the leads of the torque switch from the adjacent terminal block.
 (a)  Tag the switch leads to make sure the installation is correct.
　
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