(e)
Make sure the electrical connector is not damaged.
NOTE: The squib pins can cause damage to the electrical
____ connector if the pins do not enter the connector receptacles.
(f)
Connect the electrical connector to the fire bottle squib.
(g)
Do the steps that follow to make sure you did not bend or damage the squib pins.
NOTE: This step is necessary because the pins are most likely
____ 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.
(h) Make sure the electrical connector is not damaged.
NOTE: The squib pins can cause damage to the electrical
____ connector if the pins do not enter the connector receptacles.
1) Connect the electrical connector to the fire bottle squib.
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A
747-400 MAINTENANCE MANUAL
S 864-024
(15)
Close the circuit breaker 6H5 FIRE EXTINGUISHER APU on the P6 main power distribution panel and remove the DO-NOT-CLOSE tags.
S 864-025
(16)
Supply electrical power (AMM 24-22-00/201).
S 714-026
(17)
Do the operational test (AMM 26-22-00/501).
S 864-029
(18)
Remove electrical power if no longer necessary (AMM 24-22-00/201).
S 414-030
(19)
Close the control bay access door 315AL.
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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
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747-400 MAINTENANCE MANUAL
APU FIRE EXTINGUISHER BOTTLE - INSPECTION/CHECK
_______________________________________________
1. General_______
A. This procedure is a visual inspection/check of the APU fire extinguisher bottle M103 found at the left corner on the forward side of the firewall. You can get to the fire bottle through access door 315AL below the forward side of the firewall.
B. This inspection/check does a visual inspection of the fire extinguisher bottle, mounting lugs, wire and tubes.
TASK 26-22-01-206-001
2. APU Fire Bottle Check (Fig. 601)_____________________
A. Equipment
(1) Squib Protective Cover
M83723/60-110-AN or AC
B. References
(1)
AMM 06-09-00/201, Empennage (Major Zone 300) Access Doors and Panels
(2)
AMM 20-41-02/201, Electrostatic Discharge Sensitive Devices
(3)
IPC 26-22-11 Fig. 01
(4)
WDM 26-22-11
(5)
SSM 26-22-01
C. Access
(1)
Location Zone 315 Area Aft of Stablizer Box Compartment, L.H.
(2)
Access Panel
315AL Access Door
D. Procedure
S 866-019
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 BOTTLES TO RELEASE ITS CONTENTS SUDDENLY AND CAUSE INJURY TO PERSONS AND DAMAGE TO EQUIPMENT.
(1)
Before you touch the squib, do the procedure for devices that are sensitive to electrostatic discharge (AMM 20-41-02/201).
S 866-002
(2)
Open this circuit breaker and attach a DO-NOT-CLOSE tag:
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