(c)
Remove the switch (View A-A, Fig. 401).
(d)
Identify the wires with the number locations on the switch terminal for installation.
TASK 52-34-10-404-006
3. External Control Switch - Installation
______________________________________
A. References
(1)
IPC 52-34-10, Fig 2
(2)
SSM 52-34-01, 52-35-01
(3)
WDM 52-34-11, 52-35-11
B.
Access
(1)
Location Zone 122 Forward Cargo Container Compartment, Forward Half 142 Aft Cargo Container Compartment
(2)
Access Panel 122 AR Door, Access - Forward Cargo Door Control Switch 142 AR Door, Access - Control Switch Aft Cargo Door
C.
Procedure
S 424-007
(1) Install the switch (View A-A, Fig. 401).
NOTE: Install the nut tight against the switch and bushing seal
____ with the word "bottom" against the washer.
S 434-008
(2)
Connect the wires to the switch.
(3)
Install the four screws on the switchplate (View A, Fig. 401).
S 864-011
(4)
Remove the DO-NOT-CLOSE tags and close these circuit breakers for the applicable cargo door:
(a)
P59 Aft Equipment Panel
1) AFT CARGO DOOR POWER UNITS
(b)
P414 Power Distribution Center - Left 1) 414A21 LOWER CARGO DOOR FWD 2) 414F15 CARGO DOOR CONTROL FWD 3) 414F16 CARGO DOOR CONTROL AFT
S 434-010
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52-34-10
ALL ú ú 01 Page 403 ú Feb 10/92
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400 MAINTENANCE MANUAL
S 714-017
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.
(5)
Put the switch to the OPEN position then to the CLOSE position. S 214-014
(6)
Make sure the door operates. S 414-013
(7)
Close the cargo door.
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52-34-10
ALL ú ú 01 Page 404 ú Jun 15/98
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400 MAINTENANCE MANUAL
CARGO DOOR RESTRAINT SOLENOID - REMOVAL/INSTALLATION
____________________________________________________
1. General_______
A. This procedure contains two tasks:
(1)
The first task is the removal of the door restraint solenoid from the cargo door.
(2)
The second task is the installation of a door restraint solenoid on the cargo door.
TASK 52-34-11-004-001
2. Door Restraint Solenoid - Removal_________________________________
A. References
(1)
AIPC 52-34-11 Fig. 3, AIPC 52-34-11 Fig. 2
(2)
SSM 52-34-01, 52-35-01
(3)
WDM 52-34-11, 52-35-11
B.
Access
(1)
Location Zone 122 Forward Cargo Container Compartment, Forward Half 142 Aft Cargo Container Compartment
(2)
Access Panel
821R Door - Forward Cargo Compartment
822R Door - Aft Cargo Compartment
C.
Procedure
S 014-017
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.
(1)
Open the cargo door sufficiently to get access to the cargo compartment.
S 864-003
(2)
Open these circuit breakers for the applicable cargo door and attach DO-NOT-CLOSE tags:
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