26-23-02
ALL ú ú 07 Page 410 ú Jan 28/02
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
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757
MAINTENANCE MANUAL
S 434-042
(3)
Lift the bottle by the service handles and install the bottle mounting lugs on the support bracket.
S 434-043
(4)
Install the mounting bolts (2), washers (3), and spacers (4) in two places.
S 824-044
(5)
Loosen the discharge head gland nuts and adjust the discharge heads to give the best possible access to the hose connections.
S 434-045
(6)
Remove the discharge port caps and connect the discharge hoses to the ports. Refer to the outlet identification above each discharge outlet.
S 434-046
(7)
Tighten the gland nuts to 45-55 pound-feet.
S 434-047
(8)
Attach a lockwire from the gland nuts to the other discharge port on the bottle.
S 824-048
(9)
Tighten the discharge hoses to 280 inch-pounds for 1/2 inch
connectors and 360 inch-pounds for 5/8 inch connectors.
S 434-049
(10)
Install the ground straps (5) to the ground lugs (7).
S 434-037
(11)
Install the electrical connector to the pressure switch per
Table 401.
G. Squib Electrical Connection Procedure
NOTE: Do this procedure each time you connect an electrical connector to
____
a fire bottle squib.
S 434-029
(1) Do the steps that follow to connect an electrical connector to a fire bottle squib.
(a) Remove the protective cover.
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26-23-02
ALL ú ú 12 Page 411 ú Sep 28/01
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
757
MAINTENANCE MANUAL
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.
(b) Make sure there is no voltage between pins 1 and 2 of the electrical connector.
NOTE: Connect a 10 Kohm resistor across the meter leads to
____ remove any stray voltage from the electrical connector.
(c)
Make sure the squib pins are not bent or damaged.
(d)
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.
(e)
Connect the electrical connector to the fire bottle squib.
(f)
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. 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.
H. Connect the bottle 1 squib connectors, if applicable.
S 864-052
(1) Make sure this circuit breaker on the P6 panel is open:
(a) 6H5, FIRE EXTINGUISHING CARGO BTL 1
S 434-030
(2)
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