S 034-009
(9)
Remove the washers (12) and the bolts (13) (four places) from the mounting lugs (11).
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747-400 MAINTENANCE MANUAL
S 024-080
CAUTION: SOME OF THE FIRE BOTTLES COME WITH TEFLON TAPE AROUND THE
_______ DISCHARGE HEAD THREADS. DO NOT REMOVE THIS TAPE. THIS TAPE IS THERE TO ALLOW EASY REMOVAL OF THE DISCHARGE HEADS (REF VENDOR CMM).
(10) Remove the extinguisher bottle (14).
TASK 26-21-03-404-019
3. Install Engine Fire Extinguishing Bottle (Fig. 401)
________________________________________
A. General
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).
B. Special Tools and Equipment
(1) 17MIT65B04017 - Lock - Drive Unit, Leading Edge Flap
C. Standard Tools and Equipment
(1)
Scale - Capacity of at least 30 pounds, division of 0.01 pound and accuracy of | 0.1 %.
(2)
Voltmeter - with a 10k ohm or greater
resistance
(3)
Resistor - 10 kohm or greater
D. Parts
~........................................................................... | AMM | | AIPC | ........................ ............................ | FIG | ITEM | NOMENCLATURE | SUBJECT | FIG | ITEM | ............................................................................. | 401 | 14 | Extinguisher Bottle | 26-21-03 | 01 | 10 | 2..........…...........….........................…..........….....….........1
E. References
(1)
AMM 20-41-02/201, Electrostatic Discharge Sensitive Devices
(2)
AMM 24-22-00/201, Manual Control
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747-400
MAINTENANCE MANUAL
(3)
AMM 27-81-00/201, Leading Edge Flap System
(4)
WDM 26-21-01 thru WDM 26-21-04
F.
Access
(1)
Location Zones
514 Wing Behind Krueger Flap 11, LH
614 Wing Behind Krueger Flap 11, RH
G.
Squib Electrical Connection Procedure
NOTE: Do this procedure each time you connect an electrical connector to
____
a fire bottle squib.
S 434-067
(1) Do the steps that follow to connect an electrical connector to a fire bottle squib.
(a) If a protective cover is installed, remove the protective cover.
CAUTION: IF A SHUNT PLUG IS INSTALLED, PULL THE SHUNT PLUG STRAIGHT
_______ OFF THE FIRE BOTTLE SQUIB. IF YOU TWIST OR WIGGLE THE SHUNT PLUG, YOU CAN CAUSE DAMAGE TO THE SQUIB PINS.
(b) If a shunt plug is installed, pull the shunt plug straight off the squib and discard the shunt plug.
NOTE: Shunt plugs should not be used to cover the fire bottle
____ squibs because they can cause damage to the squib pins.
WARNING: MAKE SURE THERE IS NO VOLTAGE AT THE ELECTRICAL CONNECTOR.
_______ IF THERE IS A VOLTAGE AT THE ELECTRICAL CONNECTOR, THE SQUIB CAN RELEASE ITS CONTENTS SUDDENLY AND CAUSE INJURY TO PERSONS.
(c) Make sure there is no voltage between pins 1 and 2 of the electrical connector.
NOTE: Connect a 10 kohm resistor across the meter to
____ remove any stray voltage from the electrical connector.
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