S 024-005
 (4)  Remove the switch from the control panel.
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747-400
MAINTENANCE MANUAL

MANUAL 
DRIVE 
GEARBOX 
INTERNAL 
WINDOW  CONTROL 
PLUG  PANEL  WINDOW 
SEE  C  PLUG 
SIDE 
CARGO  CONTROL 
DOOR  PANEL 
SEE  A 
EXTERNAL 
CONTROL 
PANEL 
SEE  B 
FUSELAGE 
STRUCTURE 
FWD 
CONTROL PANEL 
A 
CONTROL SWITCH EXTERNAL DOOR  SCREW (3 LOCATIONS)  SCREW (3 LOCATIONS)  INTERNAL DOOR CONTROL SWITCH 
RAMP  POWER  INPH  LATCHES  DOOR  DOOR 
LIGHTS  ON  JACK  CLOSED  UP  CONTROL 
ON  OPEN 
OFF 
CLOSE 
SIDE DOOR CONTROL 
SWITCH 
EXTERNAL CONTROL PANEL  INTERNAL CONTROL PANEL  GUARD 
B  C 

Side Cargo Door Control Switch
Figure 401

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747-400 MAINTENANCE MANUAL
 TASK 52-32-14-404-006
 3. Install the Control Switch
__________________________
 A. References
 (1)  
IPC 52-32-13 Fig. 1

 (2)  
SSM 52-32-01

 (3)  
WDM 52-32-21

 B.
Access

 (1)  
Location Zone
 261 Main Deck STA 1720 To STA 2040, LH

 (2)  
Access Panels
 836L Door - Main Deck Cargo

 C.
Install the control switch (Fig. 401)

 S 434-007
 (1)  
Connect the wires to the switch terminals.

 S 424-008

 (2)  
Install the switch on the control panel.

 NOTE: On the internal control panel, install the switch guard with
____
 the hinge down.

 S 414-009
 (3)  
Install the control panel on the control box.

 S 864-010

 (4)  
Remove the DO-NOT-CLOSE tags and close these circuit breakers for the side cargo door:

 (a)  
P415 Power Distribution Center - Right 1) 415F17 SIDE CARGO DOOR CONT

 (b)  
P715 Aux/Ext No. 2 Power Center
 1) SIDE CARGO DOOR PWR

 S 724-011
 (5)  Do these steps to make sure you have installed the control switch correctly:
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MAINTENANCE MANUAL

 WARNING:_______ MAKE SURE THAT PERSONS AND EQUIPMENT ARE AWAY FROM THE
 DOOR AND THE DOOR OPENING WHEN YOU OPERATE THE DOOR.
 FAILURE OF THE LIFT MECHANISM COULD CAUSE THE DOOR TO
 CLOSE QUICKLY WHICH COULD CAUSE INJURY OR DAMAGE.

 CAUTION:_______IN CASE THE DOOR DOES NOT OPEN, STOP IMMEDIATELY. DO NOT OPERATE THE DOOR CONTROL SWITCH. HOLDING THE DOOR CONTROL SWITCH MAY DAMAGE THE ACTUATOR. WAIT AT LEAST 1 MINUTE BEFORE SECOND ATTEMPT. IF THE DOOR STILL DOES NOT OPEN, WAIT AT LEAST 10 MINUTES BEFORE THIRD ATTEMPT.
 (a)  
Open the cargo door to the hook pin disengagement then use the new control switch to close the cargo door.

 (b)  
Make sure the latch, hook and lift mechanisms operate when you open and close the cargo door.

 (c)  
　
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