(p)
11L28, RIGHT ENGINES STBY IGN 1
(q)
11J24, FIRE DET ALTN PWR CARGO
(r)
11J25, FIRE DET ALTN PWR APU
(s)
11J26, FIRE DET ALTN PWR ENGINE LEFT
(t)
11J27, FIRE DET ALTN PWR ENGINE RIGHT
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S 865-069
(3) Remove electrical power if it is not necessary (Ref 24-22-00).
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757 MAINTENANCE MANUAL
ENGINE FIRE AND OVERHEAT DETECTOR ELEMENT - REMOVAL/INSTALLATION
________________________________________________________________
1. General_______
A. Four dual-element fire detectors, and one dual-element overheat detector are located in each engine area. The removal/installation procedure is the same for each detector element.
TASK 26-11-01-024-001
2. Remove the Detector Element (Fig. 401)___________________________
A. References
(1)
24-22-00/201, Electrical Power - Control
(2)
71-11-04/201, Fan Cowl Panels
(3)
78-31-00/201, Thrust Reverser System
B. Access
(1)
Location Zones
410 No. 1 Power Plant (L)
420 No. 2 Power Plant (R)
(2)
Access Panels
413, 423 L, R, Fan Cowl Panel (Left)
414, 424 L, R, Fan Cowl Panel (Right)
415, 425 L, R, Fan Reverser (Left)
416, 426 L, R, Fan Reverser (Right)
C. Remove the Detector Element
S 864-002
(1) To remove the electrical power from the left engine detector elements, open these circuit breakers on the overhead circuit breaker panel, P11, attach DO-NOT-CLOSE tags:
(a)
11B20, FIRE DETECTION L ENGINE 1
(b)
11B21, FIRE DETECTION L ENGINE 2
(c)
11J26, FIRE DET ALTN PWR ENGINE LEFT
S 864-003
(2) To remove the electrical power from the right engine detector elements, open these circuit breakers on the overhead circuit breaker panel, P11, and attach DO-NOT-CLOSE tags:
(a) 11B22, FIRE DETECTION R ENGINE 1
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MAINTENANCE MANUAL
ENGINE FIRE DETECTOR NO. 3
SEE A
ENGINE FIRE DETECTOR NO. 4
SEE A ENGINE FIRE DETECTOR NO. 1
SEE A
ENGINE FIRE DETECTOR NO. 3
SEE A
ENGINE FIRE DETECTOR NO. 4
SEE A ENGINE FIRE DETECTOR NO. 2
SEE A
Engine Fire Detector Element Installation
Figure 401 (Sheet 1)
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MAINTENANCE MANUAL
RESPONDERS CSEE DETECTOR 1A FIRE DETECTOR QUICK-RELEASE CLAMP BSEE (2 LOCATIONS) 7. LINER (2 LOCATIONS) ELEMENT 1. DETECTOR
B QUICK-RELEASE CLAMP
2. BOLT
3. WASHER
4. CLAMP
ELEMENT 1. DETECTOR RESPONDER DETECTOR BRACKET SUPPORT 5. NUT
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