CARGO COMPARTMENT SMOKE DETECTOR – REMOVAL/INSTALLATION
EFFECTIVITY
737-200 Passenger Airplanes Incorporating SB 26A1081
1. General
A. This procedure has these tasks:
(1)
Removal of the cargo compartment smoke detector(s).
(2)
Installation of the cargo compartment smoke detector(s).
2. Cargo Compartment Smoke Detector Removal
A. References
(1) Cargo Compartment Smoke Detectors - Cleaning/Painting (AMM 26-20-11/701).
B. Access
(1)
Location Zones
(a)
213 Forward Cargo Compartment
(b)
215 Aft Cargo Compartment
(2)
Access Panels
(a)
4404R, Forward Cargo Door
(b)
4504R, Aft Cargo Door
C. Prepare for Removal
(1)
Open these circuit breakers and attach DO-NOT-CLOSE tags:
(a) Circuit breaker panel P6 or P18:
1) CARGO FIRE FWD DET A
2) CARGO FIRE FWD DET B
3) CARGO FIRE AFT DET A
4) CARGO FIRE AFT DET B
(2)
Open 4404R, Forward Cargo Door
(3)
Open 4504R, Aft Cargo Door
D. Remove Cargo Compartment Smoke Detector
(1)
Remove screws that hold cover plate to smoke detector.
(2)
Remove screws that hold smoke detector to ceiling bracket.
(3)
Disconnect electrical connector from smoke detector.
(4)
If necessary, perform this task: Clean Cargo Compartment Smoke Detectors, (AMM 26-20-11/701).
3. Cargo Compartment Smoke Detector Installation (Fig. 401)
A. References
(1)
Manual Control - Maintenance Practices (Apply Power)(AMM 24-22-0/201).
(2)
Cargo Smoke Detection - Smoke Test (AMM 26-20-0/501).
B. Access
(1)
Location Zones
(a)
213 Forward Cargo Compartment
(b)
215 Aft Cargo Compartment
(2)
Access Panels
(a)
4404R, Forward Cargo Door
(b)
4504R, Aft Cargo Door
May 01/99 26-20-11 Page 401
BOEING PROPRIETARY - Copyright . - Unpublished Work - See title page for details.
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Cargo Compartment Smoke Detector Installation 550
26-20-11 Figure 401 (Sheet 1) May 01/99
Page 402
BOEING PROPRIETARY - Copyright . - Unpublished Work - See title page for details.
550 Cargo Compartment Smoke Detector Installation
May 01/99 Figure 401 (Sheet 2) 26-20-11
Page 403
BOEING PROPRIETARY - Copyright . - Unpublished Work - See title page for details.
Cargo Compartment Smoke Detector Installation 550
26-20-11 Figure 401 (Sheet 3) May 01/99
Page 404
BOEING PROPRIETARY - Copyright . - Unpublished Work - See title page for details.
C. Prepare for Installation
(1)
Open these circuit breakers and attach DO-NOT-CLOSE tags:
(a) Circuit breaker panel P6 or P18:
1) CARGO FIRE FWD DET A
2) CARGO FIRE FWD DET B
3) CARGO FIRE AFT DET A
4) CARGO FIRE AFT DET B
(2)
Open 4404R, Forward Cargo Door.
(3)
Open 4504R, Aft Cargo Door
D. Install Cargo Compartment Smoke Detector
(1)
Connect airplane electrical connector to smoke detector.
(2)
Position smoke detector on ceiling bracket and secure with mounting screws.
(3)
Position faceplate on smoke detector and secure with mounting screws.
E. Cargo Compartment Smoke Detector Installation Test
(1)
Remove the DO-NOT-CLOSE tags and close these circuit breakers:
(a) Circuit breaker panel P6 or P18:
1) CARGO FIRE FWD DET A
2) CARGO FIRE FWD DET B
3) CARGO FIRE AFT DET A
4) CARGO FIRE AFT DET B
(2)
Accomplish this task: Cargo Compartment Smoke Detection - Smoke Test (AMM 26-20-0/501).
F. Return Airplane to its Normal Condition.
(1)
Close 4404R, Forward Cargo Door, or
(2)
Close 4504R, Aft Cargo Door
(3)
Remove electrical power if not needed (AMM 24-22-0/201).
550
May 01/99 BOEING PROPRIETARY - Copyright . - Unpublished Work - See title page for details. 26-20-11 Page 405
CARGO COMPARTMENT SMOKE DETECTOR - CLEANING/PAINTING
EFFECTIVITY
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