S 024-018
(2) Remove the switch from the mounting bracket.
TASK 52-32-15-404-009
3. Install the Sequence Switches
_____________________________
A. References
(1)
52-32-00/501, Side Cargo Door
(2)
IPC 52-32-15 Fig. 1
(3)
SSM 52-32-01
(4)
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 Sequence Switch (Fig,/401)
S 424-010
(1)
Install the switch in the mounting bracket, use your hand to tighten the nuts.
S 414-011
(2)
Splice the switch leads into the door control circuit wiring.
S 864-012
(3)
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 824-013
(4)
Refer to 52-32-00/501 for the adjustment of the switch.
D.
Put the airplane back to its usual condition.
S 864-014
(1) If the door is open, make sure the master latch lock handle is open and the latches and hooks are in the full open position before you close the door.
NOTE: If it is necessary manually turn the actuators to the
____
correct position.
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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400 MAINTENANCE MANUAL
S 414-017
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.
(2) Close the door.
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52-32-15
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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400 MAINTENANCE MANUAL
SEQUENCE SWITCHES - REMOVAL/INSTALLATION
________________________________________
1. General_______
A. This procedure contains a task to do a functional check of the electrical components and circuitry on the side cargo door.
TASK 52-32-15-726-001
2. Do a Functional Check of the Side Cargo Door System Electrical Components_________________________________________________________________________ and Circuitry (Fig. 601)_____________
A. Standard Tools and Equipment
(1)
Multimeter - to measure electrical continuity
B.
Reference
(1)
52-32-00/001, Side Cargo Door
(2)
IPC 52-32-15, Fig 1
(3)
SSM 52-32-01
(4)
WDM 52-32-21
C.
Access
(1)
Location Zone
261 Main Deck STA 1720 To STA 2040, LH
(2)
Access Panels
836L Door - Main Deck Cargo
D.
Procedure
S 866-011
(1)
Make sure the door is in the closed and latched position.
S 866-003
(2)
Open these circuit breakers for the side cargo door and attach DO-NOT-CLOSE tags:
(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 766-004
(3) For these sequence switches on the side cargo door, do a continuity check as follow (Fig. 601):
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