(2)  
Install the center panel to the forward bulkhead in the forward cargo compartment.

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 21-58-31
 ALL  ú ú 01 Page 405 ú Mar 15/96
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
737-300/400/500MAINTENANCE MANUAL
 EQUIPMENT COOLING AIRFLOW DETECTOR - REMOVAL/INSTALLATION
_________________________________________________________
 TASK 21-58-41-004-001
 1.  Remove Airflow Detector (Fig. 401)_______________________
 A. References
 (1)  24-22-00/201, Electrical Power
 B. Access
 (1)  Location Zone
 205 Electronic Compartment
 208 Forward Cargo Compartment

 C. Procedure
 S 864-002
 (1)  
Remove electrical power (Ref 24-22-00/201).

 S 014-003

 (2)  
Remove the oxygen shroud and the right forward bulkhead panel in the lower forward cargo compartment.

 S 024-004

 (3)
Disconnect the electrical connector from the airflow detector.

 S 024-005

 (4)  
Remove the four screws.

 S 024-006

 (5)  
Remove the airflow detector from the blower inlet duct.

 TASK 21-58-41-404-007
 2.  Install Airflow Detector (Fig. 401)________________________
 A. References
 (1)  21-58-00/501, Equipment Cooling System
 B. Access
 (1)  Location Zone
 205 Electronic Compartment
 208 Forward Cargo Compartment

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 21-58-41
 ú ú 14 Page 401 ú Jul 15/93
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A 737-300/400/500MAINTENANCE MANUAL

AIRFLOW
DETECTOR

MOUNTING SCREWS
ELECTRICAL (4 PLACES)CONNECTOR
FWD BLOWER INLET
DUCTS

A
Airflow Detector Installation Figure 401
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 21-58-41
 ú ú 21 Page 402 ú Nov 15/90
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
737-300/400/500MAINTENANCE MANUAL
 C. Procedure
 S 424-008
 (1)  
Put the airflow detector into position such that the electrical receptacle mates with the aircraft wiring.

 S 424-009

 (2)  
Install the four screws.

 S 424-010

 (3)  
Connect the electrical connector to the airflow detector.

 S 724-011

 (4)
Do the equipment cooling system operational test (Ref 21-58-00/501).

 S 414-012

 (5)  
Install the bulkhead panel and the oxygen shroud in the lower forward cargo compartment.

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 21-58-41
 ú ú 14 Page 403 ú Jul 15/93
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
737-300/400/500MAINTENANCE MANUAL
 EQUIPMENT COOLING LOW FLOW SENSOR - REMOVAL/INSTALLATION
________________________________________________________
 1.  General_______
 A.  Two tasks are supplied in this procedure. The first task is the removal of the equipment cooling low flow sensor. The second task is the installation of the equipment cooling low flow sensor.
 TASK 21-58-43-004-001
 2.  Remove Equipment Cooling Low Flow Sensor (Fig. 401)________________________________________
 A.  References
 (1)  
12-31-01/201, Zone Diagrams

 (2)  
　
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