26-17-00
ALL ú ú 01 Page 5 ú Apr 10/89
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400
FAULT ISOLATION/MAINT MANUAL
WHEEL WELL OVERHEAT DETECTION SYSTEM
COMPONENT SHT 102 FIG. QTY ACCESS/AREA REFERENCE
MAWEA, M7952CARD FILE - (REF 31-51-00, FIG. 101) CARD - WHEEL WELL OVHT DET, YLPA24 1 1 FIRE DETECTION CARD FILE, M826LEFT OF NOSE GEAR WHEEL WELL, 26-10-01
CIRCUIT BREAKER - 1 FLT COMPT, P6
W/W FIRE DET AC, C453 1 6C7 *
DETECTOR - LEFT BODY WHEEL WELL, M691 2 1 137, BODY LANDING GEAR WELL LH 26-17-02
DETECTOR - LEFT WING WHEEL WELL, M692 2 1 135, WING LANDING GEAR WELL LH 26-17-02
DETECTOR - RIGHT BODY WHEEL WELL, M694 2 1 138, BODY LANDING GEAR WELL RH 26-17-02
FIRE/OVHT TEST 1, R8048 ENABLE 3, R8055 DETECTOR - RIGHT WING WHEEL WELL, M693 MODULE - (REF 26-11-00, FIG. 101) MISCELLANEOUS SWITCHING, M7317 RELAY - (REF 31-01-36, FIG. 101) 2 1 136, WING LANDING GEAR WELL LH 26-17-02
SWITCH - FIRE/OVHT TEST (S1) UNIT - (REF 31-61-00, FIG. 101) R EFIS/EICAS INTERFACE, M7351 C EFIS/EICAS INTERFACE, M7352 L EFIS/EICAS INTERFACE, M7353 1 1 SWITCHING MODULE, M7317 FLT COMPT, P5, MISCELLANEOUS *
* SEE WDM EQUIPMENT LIST
Wheel Well Overheat Detection System - Component Index
Figure 101
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26-17-00
ALL ú
ú 01 Page 101
ú Feb 10/90
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400 FAULT ISOLATION/MAINT MANUAL
MISCELLANEOUS SWITCHING MODULE, M7317 (REF)
SEE A
EICAS
FIRE DETECTION CARD FILE, M826 (REF)
SEE B P6
FLT COMPT MAIN EQUIP CTR
FIRE/OVHT FIRE/OVHT
TEST SWITCH, (S1)
TEST
MISCELLANEOUS SWITCHING MODULE, M7317 (REF)
A CARD WHEEL WELL OVHT DET, YLPA24
A1 A2 A3 A4 A5 A6 A7 A8 A9 A10A11A12A13A14A15A16A17A18A19A20A21A22A23A24A25A26A27A28A29A30A31A32A33A34A35
FIRE DETECTION CARD FILE, M826 (REF) B Wheel Well Overheat Detection System - Component Location Figure 102 (Sheet 1)
EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú
26-17-00
ALL ú ú 02 Page 102 ú Feb 10/90
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400
FAULT ISOLATION/MAINT MANUAL
BODY GEAR
WHEEL WELL
SEE C
LEFT AND RIGHT WING WHEEL WELL DETECTOR, M691,M694
SEE D
FWD
LEFT AND RIGHT WING WHEEL WELL DETECTOR, M692,M693
INBD SEE E
BODY GEAR WHEEL WELL C
SCREW
GROMMET
SENSING
ELEMENT
FLANGECLAMP ASSEMBLY
SENSING
BODY WHEEL WELL FIRE DETECTOR
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