26-11-02
 ALL  ú ú 08 Page 402 ú Oct 18/01
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400
MAINTENANCE MANUAL

CIRCUIT BREAKER 
SYSTEM  PANEL  LOCATION GRID  NO.  NOMENCLATURE 
ENG 1 OVHT ENG 1 FIRE  P6 P6 P6 P6  C6 C1 H11 H10  C8796 C8822 C8799 C8795  FIRE SW UNLOCK ENG 1 FIRE/OVHT DET ALTN PWR LOOP A ENG FIRE/OVHT DET ENG 1 LOOP A ENG FIRE/OVHT DET ENG 1 LOOP B 
ENG 2 OVHT ENG 2 FIRE  P6 P6 P6 P6  C6 C2 G11 G10  C8798 C8822 C8800 C8797  FIRE SW UNLOCK ENG 2 FIRE/OVHT DET ALTN PWR LOOP A ENG FIRE/OVHT DET ENG 2 LOOP A ENG FIRE/OVHT DET ENG 2 LOOP B 
ENG 3 OVHT ENG 3 FIRE  P6 P6 P6 P6  C6 C3 H13 H12  C8802 C8822 C8805 C8801  FIRE SW UNLOCK ENG 3 FIRE/OVHT DET ALTN PWR LOOP A ENG FIRE/OVHT DET ENG 3 LOOP A ENG FIRE/OVHT DET ENG 3 LOOP B 
ENG 4 OVHT ENG 4 FIRE  P6 P6 P6 P6  C6 C4 G13 G12  C8804 C8822 C8806 C8803  FIRE SW UNLOCK ENG 4 FIRE/OVHT DET ALTN PWR LOOP A ENG FIRE/OVHT DET ENG 4 LOOP A ENG FIRE/OVHT DET ENG 4 LOOP B 

Engine Fire and Overheat Circuit Breaker
Figure 401

EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú

 26-11-02
 ALL  ú ú 04 Page 403 ú Oct 18/01
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
M17758
A
747-400
MAINTENANCE MANUAL

SEE A UPPER AFT ELEMENT  SEE A UPPER AFT ELEMENT  SEE A UPPER FORWARD ELEMENT
SEE A LEFT SIDE LOWER FORWARD ELEMENT  ASEE LOWER AFT ELEMENT  SEE A LOWER AFT ELEMENT  RIGHT SIDE 

Engine Fire and Overheat Detector Installation
Figure 402 (Sheet 1)

EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú

 26-11-02
 ALL  ú ú 03 Page 404 ú Jun 10/95
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
E99587
A
747-400
MAINTENANCE MANUAL

15. SUPPORT BRACKET
16. WASHER
17. NUT
1. QUICK-RELEASE CLAMP SEE B
2. SUPPORT TUBE
3. DETECTOR ELEMENT
4. RETAINING NUT
14. BRACKET
SCREW

5. END BRACKET
13. STUD  6. SCREW
12. GROMMET
7. AIRPLANE WIRINGS
11. LOCKWIRE
10. TERMINAL LUG
8.
 WASHER

9.
 NUT

ENGINE FIRE AND OVERHEAT DETECTOR, T681, T682, T683, AND T684 (WALTER KIDDE)
A
STUDGROMMET DETECTOR
(2 LOCATIONS)
ELEMENT
QUICK-RELEASE CLAMP
B1
1 DO NOT OVERTIGHTEN THE SCREW. MAKE SURE THAT THE TIGHTENED SCREW DOES NOT CONTACT THE SUPPORT. IF YOU OVERTIGHTEN THE SCREW, YOU CAN CAUSE DAMAGE TO THE CLAMP.
Engine Fire and Overheat Detector Installation Figure 402 (Sheet 2)
EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú

 26-11-02
 ALL  ú ú 02 Page 405 ú Oct 18/01
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400 MAINTENANCE MANUAL
 S 024-008
 (5) Remove the detector element (3).
 TASK 26-11-02-404-029
 3. Install the Engine Fire and Overheat Detector Element (Fig. 402)
_____________________________________________________
 A. Equipment
 (1)
Torque Wrench (100 pound-inches) 5/8 inch head

 B.
Consumable Materials

 (1)
G00778 Lockwire

 C.
Parts

 ~.............................................................................. | AMM | | AIPC | ................. ............................ | FIG | ITEM | NOMENCLATURE | SUBJECT | FIG | ITEM | ................................................................................ | 402 | 3 | Detector Element - (Upper Forward)| 26-11-02 | 01 | 30 | | | | (Upper Aft) | | | 70 | | | | (Lower Forward)| | | 110 | | | | (Lower Aft) | | | 150 | | |11 or 14 | Bracket Screw | | | 5,7 | | |13 or 16 | Washer | | |10,13 | | |14 or 17 | Nut | | |15,17 | 2.....….........…...................................…..........….....….........1
　
中國航空網 www.k6050.com
航空翻譯 www.aviation.cn
本文鏈接地址：747-400 AMM 飛機維護手冊 防火 FIRE PROTECTION 1(38)