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747-400
MAINTENANCE MANUAL

NUT
END
BRACKET

ENGINE
BRACKET

NO. 8
TERMINAL
STUD

SPACER CLAMP
RESPONDER
SEE D
SEE C
LINER

SUPPORT
NO. 10

TUBE DETECTOR
TERMINAL ELEMENT
STUD
DETECTOR  SEE B
TORQUE TOELEMENT 6-8 POUND-INCHES.
ENGINE FIRE AND OVERHEAT DETECTOR (SYSTRON DONNER)
CLAMP LINER
A1
EXAMPLE OF CLAMP
ARRANGEMENT

B
SCREW
WASHER ROUTE SENSOR TUBE THRU DUAL LINERRESPONDER
NO. 8 STUD  IF REQUIRED TO
END MAINTAIN 1.0 IN.
BRACKET MAX TERMINATION. END
BRACKET 1.0
0.5 MIN MAX
1.0 MAX
SPACER
SADDLE
CLAMP

NUT
1.0
ENGINE TORQUE TO

NO. 10 STUD
MAX
BRACKET 6-8 IN. LBS

SENSOR TERMINATION EXAMPLE OF RESPONDER MOUNT (END CLAMPS)
C D
1
SOME AIRPLANES HAVE BOTH
RESPONDERS AT THE SAME END

Engine Fire and Overheat Detector Inspection
Figure 601 (Sheet 2)

A49102
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747-400 MAINTENANCE MANUAL
SUPPORT BRACKET
WASHER
NUT
QUICK-RELEASE CLAMP
SEE B
SUPPORT TUBE
DETECTOR
ELEMENT END BRACKET
BRACKET
SCREW STUD TERMINAL LUG
GROMMET
AIRPLANE
WIRING
ENGINE FIRE AND OVERHEAT DETECTOR (WALTER KIDDE)
LOCKWIRESUPPORT
T681, T682, T683, AND T684
BRACKET
A2
BRACKET
SCREW

QUICK-RELEASE CLAMP
SEE E SUPPORT TUBE
END BRACKET
STUD
DETECTOR
ELEMENT

GROMMET STUD ELECTRICAL
(2 LOCATIONS) CONNECTORS DETECTOR
ENGINE FIRE AND
ELEMENT
OVERHEAT DETECTOR
(WALTER KIDDE) AIRPLANE
T681, T682, T683, AND T684 WIRING

A3
QUICK-RELEASE 2
DETECTORS WITH TERMINAL LUGS  CLAMP
E
3
DETECTORS WITH ELECTRICAL CONNECTORS
Engine Fire and Overheat Detector Inspection
Figure 601 (Sheet 3)

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MAINTENANCE MANUAL

 (2)  
Access Panels

 (3)  
415 Left Thrust Reverser Half - Engine 1
 416 Right Thrust Reverser Half - Engine 1
 417 Left Core Cowl - Engine 1
 418 Right Core Cowl - Engine 1
 425 Left Thrust Reverser Half - Engine 2
 426 Right Thrust Reverser Half - Engine 2
 427 Left Core Cowl - Engine 2
 428 Right Core Cowl - Engine 2
 435 Left Thrust Reverser Half - Engine 3
 436 Right Thrust Reverser Half - Engine 3
 437 Left Core Cowl - Engine 3
 438 Right Core Cowl - Engine 3
 445 Left Thrust Reverser Half - Engine 4
 446 Right Thrust Reverser Half - Engine 4
 447 Left Core Cowl - Engine 4
 448 Right Core Cowl - Engine 4

 D.  Prepare for the Procedure
 S 866-002
 (1)  Open these circuit breakers and attach DO-NOT-CLOSE tags:
 (a)  P6, Main Power Distribution Panel 1) 6C1, ALTN PWR ENG FIRE/OVHT DET LOOP A ENG 1 2) 6C2, ALTN PWR ENG FIRE/OVHT DET LOOP A ENG 2 3) 6C3, ALTN PWR ENG FIRE/OVHT DET LOOP A ENG 3 4) 6C4, ALTN PWR ENG FIRE/OVHT LOOP A ENG 4 5) 6G10, ENG FIRE/OVHT DET ENG 2 LOOP A 6) 6G11, ENG FIRE/OVHT DET ENG 2 LOOP B 7) 6G12, ENG FIRE/OVHT DET ENG 4 LOOP A 8) 6G13, ENG FIRE/OVHT DET ENG 4 LOOP B 9) 6H7, FIRE SW UNLOCK (PASSENGER) or
 6C6, FIRE SW UNLOCK (COMBI or FREIGHTER) 10) 6H10, ENG FIRE/OVHT DET ENG 1 LOOP A 11) 6H11, ENG FIRE/OVHT DET ENG 1 LOOP B 12) 6H12, ENG FIRE/OVHT DET ENG 3 LOOP A 13) 6H13, ENG FIRE/OVHT DET ENG 3 LOOP B
 E.  AIRPLANES WITH WALTER KIDDE FIRE DETECTION SYSTEM; Procedure
　
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