(6)  
Disconnect the electrical connector.

 S 034-008

 (7)  
Hold the smoke detector case and disconnect the lanyard from the rear of the smoke detector.

 S 024-006
 S 034-007
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 26-14-11
 SYSTEM  ú
 ú 01 ú BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.  Page 401Jul 15/91 

A 737-300/400/500MAINTENANCE MANUAL
CEILING
BRACKET

LOCK RELEASE MECHANISM FOR SMOKE SENSOR
Lavatory Smoke Detector Installation
Figure 401

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 26-14-11
 SYSTEM  ú
 ú 01 ú BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.  Page 402Mar 12/00 

A
737-300/400/500MAINTENANCE MANUAL
 TASK 26-14-11-404-010
 3.  Install the Lavatory Smoke Detector (Fig. 401)___________________________________
 A. Procedure
 S 434-020
 (1)  
Attach the lanyard from the ceiling bracket to the smoke detector case.

 S 434-011

 (2)  
Put the ceiling bracket on top of the smoke detector.

 S 434-012

 (3)  
Loosely tighten the two mounting screws on the smoke detector case.

 S 434-013

 (4)  
Connect the connector to the smoke detector.

 S 424-014

 (5)  
Put the smoke detector into the ceiling.

 S 434-015

 (6)  
Push on the screws until the ceiling bracket moves into its position.

 S 434-018

 (7)  
Tighten the screws which hold the ceiling bracket in its position.

 (8)  
Put the faceplate on the smoke detector.

 (9)  
Tighten the two faceplate screws.

 S 864-019

 (10)
 Close the PASS & CREW CALL/LAV SMOKE DETECTOR circuit breaker on the P18-4 panel.

 (11)
 Do a test of the Lavatory Smoke Detection System (Ref 26-14-00/501).

 S 434-017
 S 434-016
 S 714-021
 EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. AIRPLANES WITH LAVATORY SMOKE DETECTION ú

 26-14-11
 SYSTEM  ú
 ú 01 ú BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.  Page 403Jul 15/91 

A
737-300/400/500MAINTENANCE MANUAL
 LAVATORY SMOKE DETECTOR - CLEANING/PAINTING
___________________________________________
 1.  General
_______
 A.  This section contains a procedure to clean the lavatory smoke detectors.
 B.  A smoke detector is installed in the ceiling of each lavatory. The procedure to clean the smoke detectors is the same for each detector.
 TASK 26-14-11-167-001
 2.  Clean the Lavatory Smoke Detector
_________________________________
 A.  Equipment
 (1)  
Dry Pressurized Air Source

 (2)  
Nylon Brush

 (3)  
Lint-free cloth

 (4)  
Luke-warm water

 (5)  
Standard Screwdriver

 B.  Consumable Materials
 (1) B00158 Detergent, or any general purpose household detergent.
 C.  References
 (1)
AMM 26-14-11/401, Lavatory Smoke Detector, Removal/Installation

 (2)
AMM 26-14-00/501, Lavatory Smoke Detector, Adjustment/Test

 D.  Access
 (1)  Location Zones
 103/113/114 Lavatories

 E.  Procedure
 S 167-002
 (1)  
Use a nylon bristle brush to remove the dust from the external surfaces of the smoke detector.

 (2)  
Use the lint-free cloth to clean the smoke detector.

 S 167-003
　
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