S 434-011

 (2)  
Connect the wires to the terminals on the switch.

 S 434-012

 (3)  
Install the ceiling panel around the switch cutout with the doubleback tape installed between the ceiling panel and the support bracket.

 S 434-013

 (4)  
Install the bezel and screws to attach the ceiling panel to the structure.

 S 864-014

 (5)  
Remove the DO-NOT-CLOSE tag and close this P34 panel circuit breaker:

 (a)  34A6, FWD CARGO LOADER CONT

 (6)  
Supply provide electrical power (Ref 24-22-00).

 S 714-016

 (7)  
Put the control switch in the LOAD position. Make sure the modules move to the aft end of the cargo compartment.

 S 714-017

 (8)  
Put the control switch in the UNLOAD position. Make sure the modules move forward to the cargo door.

 S 864-015
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757 MAINTENANCE MANUAL
 S 864-018
 (9) Remove electrical power if it is not necessary (Ref 24-22-00).
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757 MAINTENANCE MANUAL
 FORWARD CARGO LOADER LIMIT SWITCHES - REMOVAL/INSTALLATION
__________________________________________________________
 1.  General
_______
 A.  This procedure contains two tasks. The first task is the removal and installation procedure for the retract limit switch. The second task is the removal and installation procedure for the extend limit switch.
 TASK 25-51-07-404-001
 2.  Forward Cargo Loader Retract Limit Switch - Removal/Installation (Fig. 401)
________________________________________________________________
 A.  References
 (1)  
24-22-00/201, Electrical Power - Control

 (2)  
25-50-02/401, Cargo Compartment Sidewall Panels

 (3)  
25-51-00/201, Cargo Loader Systems (Deactivation)

 (4)  
25-51-00/501, Cargo Loader System

 B.  Access
 (1)  
Location Zones
 122 Forward Cargo Compartment (Right)

 (2)  
Access Panels
 821 No. 1 Cargo Door

 C.  Prepare for Removal
 S 864-002
 (1)  Hold the control switch in the LOAD position until the modules are fully aft.
 NOTE: If the cargo loader does not operate, deactivate the cargo
____
 loader (Ref 25-51-00/201).

 S 864-003
 (2)  
Remove electrical power (Ref 24-22-00).

 S 864-004

 (3)  
Open these circuit breakers on the APU/External Power panel, P34, and attach DO-NOT-CLOSE tags:

 (a)  
34A6, FWD CARGO LOADER CONT

 (b)  
34B14, FWD CARGO LOADER DRIVE

 S 014-005
 (4)  
Open the access door on the aft module to get access to the limit switch.

 (5)  
Remove the ball lockpins from the ball-nut load arms.

 (6)  
Disconnect module 2 from module 1.

 S 034-006
 S 034-007
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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A

757
MAINTENANCE MANUAL

FWD CARGO LOADER  LIMIT SWITCH  SIDEWALL  SIDEWALL 
EXTEND LIMIT SWITCH  SENSOR  SUPPORT (REF)  LINING 
　
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