S 724-019

 (4)  
Do the two steps before for the remaining clamps. Work towards the center of detector.

 S 284-020

 (5)  
Make sure the resistance between the detector connector shell and the primary airplane structure is not more than 0.004 ohm.

 S 434-021

 (6)  
Put lockwire on the connectors.

 S 864-022

 (7)  
Remove the DO-NOT-CLOSE tags and close these circuit breakers on the P11 panel:

 (a)  
11Q25, DUCT LEAK DET RIGHT

 (b)  
11Q17, DUCT LEAK DET LEFT

 E. Test Detector Installation
 S 864-023
 (1)  
Supply electrical power (AMM 24-22-00/201).

 S 984-024

 (2)  
Hold the DUCT LEAK test switch on the miscellaneous test panel in the DUCT LEAK position.

 S 284-025

 (3)  
Make sure the two yellow DUCT LEAK lights on the bleed air control panel on the P5 panel are on.

 (4)
Release the DUCT LEAK test switch and make sure the lights go off.

 S 284-027

 (5)  
Stop for 5 seconds and then make sure the message DUCT LEAK BITE is not shown on the EICAS display.

 S 984-026
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757
MAINTENANCE MANUAL

 (6)  S 414-028Close the access panels as necessary (AMM 06-41-00/201, AMM 06-42-00/201).
 (7)  S 424-029Install the wall panels, which were removed, on the cargo door (AMM 25-50-02/401).
 S 014-030

 WARNING: USE THE PROCEDURE IN AMM 32-00-15/201 TO REMOVE THE DOOR LOCKS.
_______ THE DOORS OPEN AND CLOSE QUICKLY AND CAN CAUSE INJURY TO PERSONS OR DAMAGE TO EQUIPMENT.
 (8)  
Remove the door locks from the main landing gear doors and close the doors (AMM 32-00-15/201).

 S 864-033

 (9)  
Remove electrical power if it is not necessary (AMM 24-22-00/201).

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757 MAINTENANCE MANUAL
 EXTINGUISHING - DESCRIPTION AND OPERATION
_________________________________________
 1.  General_______
 A. The airplane fire extinguishing consists of five systems:
 (1)  
Engine fire extinguishing

 (2)  
APU fire extinguishing

 (3)  
Lavatory waste compartment automatic fire extinguishing

 (4)  
Cargo compartment fire extinguishing

 (5)  
Portable fire extinguishing

 B. Engine Fire Extinguishing (AMM 26-21-00/001)
 (1)  Two fire extinguishing bottles distribute extinguishing agent to either engine. Both bottles are installed forward of the aft cargo compartment.
 C. APU Fire Extinguishing (AMM 26-22-00/001)
 (1)  One fire extinguishing bottle distributes extinguishing agent to the APU. The bottle is forward of the APU firewall on the lower right side.
 D. Cargo Compartment Fire Extinguishing (AMM 26-23-00/001)
 (1)  Two fire extinguishing bottles distribute extinguishing agent to either compartment. Both bottles are installed forward of the aft cargo compartment.
 E. Lavatory Waste Compartment Automatic Fire Extinguishing
 (1)  The automatic fire extinguishing system floods the lavatory waste compartment with an inert gas to extinguish a fire. The system includes a heat activated extinguisher bottle and a temperature indicator.
 F. Portable Fire Extinguishing (AMM 26-26-00/001)
 (1)  Portable fire extinguishers can be of the following types: carbon dioxide, Halon, and pressurized water. These are located throughout the flight and passenger compartment areas.
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