S 436-117
WARNING:_______PUT THE SQUIB PROTECTIVE COVERS ON THE FIRE BOTLLE SQUIBS. IF YOU DO NOT PUT THE PROTECTIVE COVERS ON THE FIRE BOTTLE SQUIBS, THE FIRE BOTTLES CAN RELEASE ITS CONTENTS SUDDENLY AND CAUSE INJURY TO PERSONS.
CAUTION:_______DO NOT PUT SHUNT PLUGS ON THE FIRE BOTTLE SQUIBS. THE SHUNT PLUGS CAN CAUSE DAMAGE TO THE SQUIB PINS.
(6) Put the protective covers on all the fire bottle squibs.
(a) 6L4, FLT DECK LIGHT CAPT IND
EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú
26-23-05
ALL ú ú 04 Page 602 ú Oct 18/01
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400 MAINTENANCE MANUAL
S 866-017
WARNING: YOU MUST CAREFULLY FOLLOW THE STEPS IN THE TASK TO PUT THE
_______ AIR/GROUND RELAY SYSTEM IN THE AIR MODE. IF YOU DO THE STEPS INCORRECTLY, IT CAN CAUSE THE AUTOMATIC OPERATION OF THE AIRPLANE SYSTEMS. THIS CAN CAUSE INJURY TO PERSONS AND DAMAGE TO EQUIPMENT.
(7) Make sure the airplane is in the Air Mode. Do the "Put the Air/Ground Relay System in the Air Mode" task (AMM 32-09-02/201).
E. Test of the Forward Squib
S 766-190
(1) Do the following steps if the A26002 test tool is used:
(a)
Connect the electrical connector, DM7906B, of bottle A to the connector J2 on the A26002 test box.
(b)
Connect the electrical connector, DM7908B, of bottle C to the connector J1 on the A26002 test box.
(c)
Connect the 28 volts dc power source to the A26002 test box.
(d)
Turn the POWER switch on the A26002 test box to the ON position.
(e)
Push and release the TEST RELAY RESET switch on the test box.
(f)
Push and release the timer reset switch on the A26002 test box.
S 766-191
(2) Do the following steps if the G26001 test tool is used:
(a)
Connect the electrical connector, DM6742B, of bottle D to the connector on the G26001 test box.
(b)
Set the toggle switch on the G26001 squib test box to the OFF position.
(c)
Connect a multimeter to the G26001 squib test box.
S 866-188
(3) Open these circuit breakers on the P180 DC power distribution panel and attach a DO-NOT-CLOSE tags:
(a) 180F4, E/E COOL VLV CONT
EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú
26-23-05
ALL ú ú 02 Page 603 ú Oct 18/01
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400 MAINTENANCE MANUAL
(b) 180H1, E6/E9 VLV PWR
S 866-007
(4) Close these circuit breakers on P6 main power distribution panel and remove DO-NOT-CLOSE tags :
(a)
6H6, FIRE EXTINGUISHER LOWER CARGO
(b)
6L4, FLT DECK LIGHT CAPT IND
S 736-192
(5)
Push the FWD ARMED switch on the fire control module.
S 736-193
(6)
Push and release the DISCH switch on the fire control module, M7326, to start the operation of the time delay.
S 766-194
(7)
If the A26002 test tool is not used, make sure it takes 27 - 33 minutes for the voltage on the multimeter to reach 18 volts DC.
S 736-195
(8)
If the A26002 tool is used, make sure these indications occur:
(a)
The power lamp on the test box for the time delay is on.
(b)
The elapsed time indicator operates.
