SEE A
APU
FIREWALL
SEE B
A
APU Fire Extinguisher Bottle/Discharge Cartridge Installation
Figure 401 (Sheet 1)
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A
757
MAINTENANCE MANUAL
ELECTRICAL
DISCHARGE
PORT CONNECTOR
DISCHARGE ASSEMBLY
CONNECTOR
ASSEMBLY
APU FIRE EXTINGUISHER BOTTLE APU FIRE EXTINGUISHER BOTTLE
6. DISCHARGE
GROUND 4. GROUND(SQUIB)
LUG STRAP
ALL EXCEPT GUN 051 GUN 051
APU Fire Extinguisher Bottle/Discharge Cartridge Installation
Figure 401 (Sheet 2)
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MAINTENANCE MANUAL
(2) Access Panels
313AL Control Bay Access Door
315AL APU Access Door
316AR APU Access Door
E. Remove the Discharge Cartridge (Squib) (Fig. 401)
S 864-001
(1) Open this circuit breaker on the main power distribution panel, P6, and attach a DO-NOT-CLOSE tag:
(a) 6G1, FIRE EXT APU
S 944-003
WARNING: STAY OFF THE SERVICE ACCESS DOOR, 311AL AND THE ACCESS DOOR FOR
_______ THE CONTROLS BAY, 313AL. YOUR WEIGHT CAN CAUSE THE SPRING-LOADED LATCHES TO RELEASE. IF YOU FALL THROUGH THE DOOR, INJURY CAN OCCUR.
(2)
Open the controls bay access door, 313AL (AMM 06-42-00/201).
S 944-116
(3)
Find the APU extinguisher bottle in the APU compartment.
S 864-128
WARNING: DO NOT TOUCH THE SQUIB BEFORE YOU DO THE PROCEDURES FOR DEVICES
_______ THAT ARE SENSITIVE TO ELECTROSTATIC DISCHARGE. ELECTROSTATIC DISCHARGE CAN CAUSE THE FIRE BOTTLE TO RELEASE ITS CONTENTS SUDDENLY AND CAUSE INJURY TO PERSONS AND DAMAGE TO EQUIPMENT.
(4)
Before you touch the squib, do the procedure for devices that are sensitive to electrostatic discharge (AMM 20-41-01/201).
S 034-004
(5)
Disconnect the electrical connector (3) from the discharge squib (Ref Table 401).
S 434-084
WARNING:_______PUT A PROTECTIVE COVER ON THE FIRE BOTTLE SQUIB. IF YOU DO NOT PUT A PROTECTIVE COVER ON THE FIRE BOTTLE SQUIB, THE FIRE BOTTLE CAN RELEASE ITS CONTENTS SUDDENLY AND CAUSE INJURY TO PERSONS.
CAUTION:_______DO NOT PUT A SHUNT PLUG ON THE FIRE BOTTLE SQUIB. THE SHUNT PLUG CAN CAUSE DAMAGE TO THE SQUIB PINS.
(6) Put a protective cover on the fire bottle squib (5).
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(7) Turn and remove the squib (5).
TASK 26-22-01-424-092
3. Install the APU Fire Extinguisher Bottle Discharge Cartridge____________________________________________________________
A. Equipment
(1)
Voltmeter - 28 vdc
(2)
10 kohm resistor
B. References
(1)
AMM 06-42-00/201, Empennage (Major Zone 300) Access Doors and Panels
(2)
AMM 20-41-01/201, Electrostatic Discharge Sensitive Devices
(3)
AMM 24-22-00/201, Electrical Power - Control
C. Access
(1)
Location Zones
211 Flight Compartment (Left)
212 Flight Compartment (Right)
315 APU Compartment (Left)
316 APU Compartment (Right)
(2)
Access Panels
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