(12)
Install new end caps on the manifold.
(13)
Install all weldment assemblies that you removed.
(14)
Remove the caps from the detector inlet tubes.
(15)
Connect the manifold to the smoke detectors.
(16)
Do the operational test and the airflow test for the applicable Cargo Smoke Detection System (AMM 26-16-00/501).
501
26-16-0 Page 702 BOEING PROPRIETARY - Copyright . - Unpublished Work - See title page for details. Apr 01/97
SMOKE DETECTOR - REMOVAL/INSTALLATION
EFFECTIVITY
Passenger/Cargo Convertible Airplanes
1. General
A. The smoke detectors are in the smoke detection shroud adjacent to the oxygen bottles shroud in the forward cargo compartment. Each detector has a bonding jumper, therefore a bonding check is required each time a smoke detector is removed and installed.
2. Equipment and Materials
A. Low Resistance Testing Set - Microhm Bridge Type W Bonding Meter, Model T-207, Avtron Manufacturing Co.
3. Remove Smoke Detector (Fig. 401)
A. Open the CARGO SMOKE circuit breaker on panel P6.
B. Remove cover from the smoke detection shroud.
C. Remove electrical connector from smoke detector.
D. Loosen clamps on inlet and outlet ports of smoke detectors and disconnect tubing.
E. Remove mounting screws from smoke detector.
F. Lift smoke detector; remove bonding jumper from bottom of detector and remove detector.
4. Install Smoke Detector (Fig. 401)
A. Clean faying surfaces and connect bonding jumper to mounting lug on bottom of smoke detector with NAS601-7P screw and on AN960-6L washer.
NOTE: If new smoke detector is being installed, remove one of existing screws in detector mounting lug.
B. Position smoke detector with electrical connector pointing toward smoke detector system Metal-Cal, install screws and tighten.
C. Check bonding resistance between the smoke detector and primary structure with bonding meter. Observe that the resistance is less than 0.0025 ohm.
D. Connect tubing to inlet and outlet ports and tighten clamps.
E. Connect electrical connector to smoke detector.
F. Install cover on smoke detection shroud.
G. Operationally test smoke detector (Ref 26-16-0, A/T).
Feb 15/81 26-16-11 Page 401
BOEING PROPRIETARY - Copyright . - Unpublished Work - See title page for details.
H21739
Smoke Detector Installation 527
26-16-11Page 402 Figure 401 BOEING PROPRIETARY - Copyright . - Unpublished Work - See title page for details. Nov 1/74
SMOKE DETECTOR - CLEANING
EFFECTIVITY
Passenger/Cargo Convertible Airplanes
1. Smoke Detector Cleaning A Pull CARGO SMOKE circuit breaker.
B. Gain access to smoke detectors.
C Remove electrical connector from each smoke detector.
D. Loosen clamps on inlet and outlet ports of smoke detectors and disconnect tubing.
E. Apply a low velocity source of air (5-psi max) to inlet of each smoke detector for a minimum of 15 seconds. Allow no foreign objects or cleaning agents to enter the smoke detector labyrinth assembly.
F. Reconnect tubing to inlet and outlet ports and tighten clamps.
G. Reconnect electrical connector of each smoke detector.
H. Restore airplane to precleaning configuration.
I. Push in CARGO SMOKE circuit breaker.
J. Perform Smoke Detection System Test using smoke (26-16-0, A/T).
May 15/79 26-16-11 Page 701
BOEING PROPRIETARY - Copyright . - Unpublished Work - See title page for details.
CONTROL AMPLIFIER - REMOVAL/INSTALLATION
EFFECTIVITY
Passenger/Cargo Convertible Airplanes
1. General
A. The control amplifiers are in the smoke detection shroud on the aft end of the oxygen bottles shroud in the forward cargo compartment. Each control amplifier has a bonding jumper, therefore a bonding check is required each time a control amplifier is removed and installed.
2. Equipment and Materials
A. Low Resistance Testing Set - Microhm Bridge Type W Bonding Meter, Model T-207, Avtron Manufacturing Co.
3. Remove Control Amplifier (Fig. 401)
A. Open the CARGO SMOKE circuit breaker on panel P6.
B. Remove cover from smoke detection shroud.
C. Remove electrical connectors from control amplifier.
D. Remove mounting screws and disconnect bonding jumper.
E. Remove control amplifier.
4. Install Control Amplifier (Fig. 401)
A. Position control amplifier so that amplifier connectors mate properly with airplane wiring and install three mounting screws.
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