(SHOWN IN
(REF)

LATCH LOCKCLOSED
SWITCH MOUNTING NUT
POSITION)

SECTOR (REF)
(REF) (SHOWN IN UNLOCKED DOOR STRUCTURE
(REF)
INBD  POSITION)INBD
HOOK CLOSE SWITCH  MASTER LATCH LOCK SWITCH
E F
LATCH BELLCRANK (REF) (SHOWN WITH LATCH IN CLOSED POSITION) LATCH CLOSE
SWITCH SWITCH ADJUSTMENT SWITCH,
MOUNTING MOUNTING NUT BOLT (REF) YAAS04,
BOLT (REF)  (REF)
YABS04 STRIKER ARM (REF)
ADJUSTMENT ARM STRIKER
BOLT (REF) (REF)
DOOR CLOSE SWITCH, DOOR BEAM
YAAS07,YABS07
(REF) BRACKET (REF) DOOR BEAM (REF) INBD (DOOR CLOSED) INBD
SWITCH
DOOR CLOSE SWITCH  LATCH CLOSE SWITCH
G H
Forward/Aft Cargo Doors - Component Location (Details from Sht 1) Figure 102 (Sheet 3)
EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú

 52-34-00
 ALL  ú ú 02 Page 105 ú Oct 10/90
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400 FAULT ISOLATION/MAINT MANUAL
ADAPTER (REF)BELLCRANK (REF)

BEARING HOUSING (REF)

Forward/Aft Cargo Doors - Component Location (Details from Sht 1)
Figure 102 (Sheet 4)

EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú

 52-34-00
 ALL  ú ú 02 Page 106 ú Oct 10/90
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A

747-400
FAULT ISOLATION/MAINT MANUAL

BEARING HOUSING (REF)
BEARING 
(REF) 
HOOK RETURN 
SPRING 
BEARING  BELLCRANK 
HOUSING  (REF) 
(REF) 

HOOK RETURN SPRING ATTACH BOLT (REF)
SWITCH MOUNTING AND ADJUSTMENT NUT (REF)
SWITCHHOOK (REF) ACTUATOR (REF)
(SHOWN IN OPEN POSITION) FWD
HOOK POSITION SWITCH L FROM SHT 1
HOOK RETURN SPRING ASSEMBLY 
ELECTRICAL 
K  FROM SHT 4  PLUG (REF) 

HOOK POSITION SWITCH, YAAS05, YABS05
SWITCH BRACKET (REF) RESTRAINT SOLENOID, YAAL01,YABL01
EYE BOLT
(REF)
RESTRAINT ARM (REF)
HOOK
TORQUE
TUBE CAM
(REF)
DOOR SKIN (REF)
CARGO DOOR RESTRAINT SOLENOID M FROM SHT 1
Forward/Aft Cargo Doors - Component Location
Figure 102 (Sheet 5)

EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú

 52-34-00
 ALL  ú ú 02 Page 107 ú Oct 10/90
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400 FAULT ISOLATION/MAINT MANUAL
FWD CARGO DOOR CONTROL SWITCH ACCESS
SEE O SHT 7
FWD CARGO DOOR, 821R
AFT CARGO DOOR, 822R
AFT CARGO DOOR CONTROL SWITCH ACCESS
SEE O SHT 7
P414 PANEL
MAIN EQUIP CTR
P59 PANEL
AFT CARGO
DOOR, 822

Forward/Aft Cargo Doors - Component Location Figure 102 (Sheet 6)
EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú

 52-34-00
 ALL  ú ú 02 Page 108 ú Oct 10/90
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400 FAULT ISOLATION/MAINT MANUAL
SWITCH PLATE (REF) FWD
ACCESS DOOR (REF)
PLUNGER SPRING(REF) (REF)
DOOR FRAME (REF)
SWITCH PAN (REF)
CARGO DOOR CONTROL SWITCH,PUSHRODHANDLE M710,M712(REF)
CARGO DOOR EXTERIOR CONTROL SWITCH
TRIGGER
(REF)  O  FROM SHT 6 
SWITCH 
BRACKET 
(REF) 
LATCH OPEN 
SWITCH 
YAAS10, YABS10 

SWITCH MOUNTING NUT (REF)
INBD
STRIKER ARM
MAIN LATCH
MASTER LATCH LOCK HANDLE TORQUE TUBE (REF)
(SHOWN IN CLOSED POSITION)
N FROM SHT 1
LATCH OPEN SWITCH P FROM SHT 1
Forward/Aft Cargo Doors - Component Location Figure 102 (Sheet 7)
　
中國航空網(wǎng) m.k6050.com
航空翻譯 www.aviation.cn
本文鏈接地址：747-400 AMM 飛機(jī)維護(hù)手冊(cè) 艙門 DOORS 3(6)