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____ to be damaged the first time an electrical connector is connected to the squib.
 1) Disconnect the electrical connector from the fire bottle
 squib. 2) Make sure the squib pins are not bent or damaged. 3) Make sure the electrical connector is not damaged.
 NOTE: The squib pins can cause damage to the connector
____ if the pins do not enter the electrical connector receptacles.
 4) Connect the electrical connector to the fire bottle squib.
 S 864-026
 (10) Remove the DO-NOT-CLOSE tags and close these circuit breakers on the P6 panel:
 (a)  
6H1, FIRE EXTINGUISHING ENG L BTL 1

 (b)  
6H5, FIRE EXTINGUISHING CARGO BTL 1

 (c)  
6H6, FIRE EXTINGUISHING CARGO BTL 2

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757 MAINTENANCE MANUAL
 G. Do a Test of the squib connections:
 S 864-027
 (1)  Push the TEST switch on the SQUIB TEST Control Panel on the right side panel, P61.
 (a)  Make sure the squib test lights CARGO FWD 1 and 2, and CARGO AFT 1 and 2, come on.
 S 864-119
 (2)  Release the TEST switch.
 (a)  Make sure the squib test lights CARGO FWD 1 and 2, and CARGO AFT 1 and 2, come off.
 S 864-031
 (3) Remove electrical power if it is not necessary (Ref 24-22-00).
 TASK 26-23-02-024-021
 4.  Remove the Cargo Fire Extinguisher Bottle_________________________________________
 A. General
 (1)  This task gives the instructions to remove the cargo fire extinguisher bottle.
 B. Equipment
 (1)  
Squib Protective Cover
 M83723/60-28-AN or AC
 M83723/60-210-AN or AC
 M83723/60-110-AN or AC

 (2)  
Discharge Port Cap - (Supplied with the fire
 extinguisher bottles)

 

 C. References
 (1)  AMM 24-22-00/201, Electrical Power - Control
 D. Access
 (1)  
Location Zones
 153 Aft Cargo Compartment (Left)
 154 Aft Cargo Compartment (Right)

 (2)  
Access Panels
 822 Aft Cargo Compartment Door

 

 E. Remove the Cargo Fire Extinguisher Bottle 1 or 2 as applicable (Fig. 401)
 S 864-032
 (1)  Open these circuit breakers on the main power distribution panel, P6, and attach DO-NOT-CLOSE tags:
 (a)  
6H5, FIRE EXTINGUISHING CARGO BTL 1

 (b)  
6H6, FIRE EXTINGUISHING CARGO BTL 2

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A
757
MAINTENANCE MANUAL

 S 904-038
 (2)  AIRPLANES WITH METERED CARGO FIRE EXTINGUISHING SYSTEM; When fire bottle 2 releases its fire extinguishing agent, the filter/drier and the regulator in the related aft discharge line must be replaced along with the fire extinguisher bottle.
 (a)  
Do a check of the airplane log book or the squibs to determine if the fire bottle has released its agent into the fwd or aft cargo compartment.

 (b)  
Replace the related filter/drier, and regulator.

 S 034-033
 (3)  Disconnect the electrical connectors from the applicable bottle squibs and pressure switch. Refer to Table 401:
 Table 401 Cargo Fire Bottle Connections
_____________________________
 ~..................................................................... | CONNECTOR | IS CONNECTED TO BOTTLE | ....................................................................... | D4410 (RED) | M10466, Bottle 1 - Pressure Switch | | D4412 (YELLOW) | M10466, Bottle 1 - Forward Cargo Discharge Squib | | D4414 (BLUE) | M10466, Bottle 1 - Aft Cargo Discharge Squib | | D4416 (RED) | M10467, Bottle 2 - Pressure Switch | | D4418 (YELLOW) | M10467, Bottle 2 - Forward Cargo Discharge Squib | | D4420 (BLUE) | M10467, Bottle 2 - Aft Cargo Discharge Squib | 2................…....................................................1
　
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