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 26-15-02
 DETECTORS  ú
 ú 03 ú BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.  Page 402Jan 20/98 

A

757
MAINTENANCE MANUAL

UPPER FIRE DETECTOR
A
QUICK-RELEASE
CLAMP
SEE A

LOWER FIRE DETECTOR
4. BUSHING
A
SUPPORT TUBE
5. CLIP-P
1. DETECTOR ELEMENT
2. WASHER-TAB
RETAINING NUT
END BRACKET
ELECTRICAL CONNECTOR LOCKWIRE
3. WASHER-SEALING COPPER (4 LOCATIONS)
APU FIRE DETECTOR
TIGHTEN CONNECTION
AIRPLANE WIRING
BUSHING DETECTOR
(2 LOCATIONS)
ELEMENT
(2 LOCATIONS)

A
ELECTRICAL
B
LOCKWIRECONNECTOR
QUICK-RELEASE
CLAMP

A A-A
APU Fire Detector Element Installation
Figure 401 (Sheet 2)

EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. AIRPLANES WITH GRAVINER FIRE DETECTORS ú

 26-15-02
 ú ú 07 Page 403 ú Jun 20/95
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A72145
A

757
MAINTENANCE MANUAL

 C.  Access (1) Location Zones 119/120 Main Equipment Center 211/212 Flight Compartment 310 Fuselage
 (2)  Access Panels 311/312 313/314 315/316  Area Aft of Pressure Bulkhead to BS 1725 (L, R)Stabilizer Torsion Box Compartment (L, R)APU Compartment
 D.  Remove the APU Fire Detector Element
 (1)  S 864-001Open these circuit breakers on the overhead circuit breaker panel, P11, and attach DO-NOT-CLOSE tags: (a) 11B24, FIRE DETECTION APU 1
 E.  S 014-002 (2) Open the APU access doors and install rods to hold the doors open.AIRPLANES WITH SYSTRON DONNER FIRE DETECTORS; Remove the detector element
 (1)  S 034-003Remove the four bolts (2) to remove the two clamps (4) on the detector responder (1).
 (2)  S 034-004Disconnect the electrical connector and install a protective cap.
 F.  S 034-005 (3) Open the quick-release clamps (10) to remove the detector element (9).AIRPLANES WITH GRAVINER FIRE DETECTORS; Remove the detector element
 (1)  S 034-006Disconnect the electrical connectors at each end of the detector element to be removed and install protective caps. Discard copper crush washers.

 EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú

 26-15-02
 ALL  ú ú 04 Page 404 ú May 28/99
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A

757 MAINTENANCE MANUAL
 S 034-007
 (2)  
Remove the retaining nut which holds the detector element connector to the end bracket of the support tube at each end of the detector.

 S 034-008

 (3)  
Remove the connector from the end brackets.

 S 024-009

 (4)
Open the quick-release clamps and remove the detector element.

 TASK 26-15-02-424-010
 3.  Install the APU Fire Detector Element (Fig. 401)
_____________________________________
 A.  References
 (1)  AMM 24-22-00/201, Electrical Power - Control
 B.  Equipment
 (1)  Torque Wrench - commercially available
 C.  Access
 (1)  
Location Zones
 119/120 Main Equipment Center
 211/212 Flight Compartment
 310 Fuselage

 (2)  
Access Panels 311/312 Area Aft of Pressure Bulkhead to BS 1725 (L, R) 313/314 Stabilizer Torsion Box Compartment (L, R) 315/316 APU Compartment

 D.  AIRPLANES WITH SYSTRON DONNER FIRE DETECTORS;
 Install the detector element

 S 434-011
 (1)  Install the responder (1) with the two clamps (4), and four bolts (2), washers (3), and nuts (7).
　
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