ILF 402, 452, 509, 510, 523, 525-528, 576, 577, 971; ILF 101, 151, 156-199, 301, 304, 308, 310, 314, 315, 317-319,
323, 331-399, 401, 405, 406, 409, 410, 412, 416, 424, 425, 427-429, 451, 501-504, 507, 508, 512-514, 516, 518, 524,
531-533, 535-537, 541, 542, 552-556, 560-562, 567, 571-575, 671, 672, 686, 703, 707-710, 803-813, 821, 822, 831,
832, 836, 837, 841, 842, 851, 852, 854-858, 861-863, 871-874, 947, 948, 968-970, 972, 973 POST SB 737-47-1003
(Continued)
(Continued)
CAPT Electrical System Panel, P18-3
Row Col Number Name
ILF 568, 569, 581, 583, 585, 588-590, 592-599, 601-603, 606, 607, 610-615, 620, 625-627, 691-699,
833-835, 838, 980-999; ILF 567, 973 POST SB 737-47-1003
D 17 C01657 NITROGEN GENERATION CONTROL
ILF 402, 452, 509, 510, 523, 525-528, 568, 569, 576, 577, 581, 583, 585, 588-590, 592-599, 601-603,
606, 607, 610-615, 620, 625-627, 691-699, 833-835, 838, 971, 980-999; ILF 101, 151, 156-199, 301,
304, 308, 310, 314, 315, 317-319, 323, 331-399, 401, 405, 406, 409, 410, 412, 416, 424, 425, 427-429,
451, 501-504, 507, 508, 512-514, 516, 518, 524, 531-533, 535-537, 541, 542, 552-556, 560-562, 567,
571-575, 671, 672, 686, 703, 707-710, 803-813, 821, 822, 831, 832, 836, 837, 841, 842, 851, 852,
854-858, 861-863, 871-874, 947, 948, 968-970, 972, 973 POST SB 737-47-1003
E 15 C01680 NGS ALT PWR
SUBTASK 47-43-01-010-001
(4) Open this access panel:
Number Name/Location
192BL ECS Ram Air Inlet Mixing Duct Panel - Forward
SUBTASK 47-43-01-922-001
WARNING
DO NOT TOUCH THE COMPONENTS OF THE NITROGEN GENERATION
SYSTEM WHEN THEY ARE HOT. WHEN THE COMPONENTS ARE HOT,
THEY CAN CAUSE INJURIES TO PERSONNEL.
WARNING
DO NOT DISCONNECT THE COMPONENTS OF THE NITROGEN
GENERATION SYSTEM, OR DUCTS WHEN THE SYSTEM IS PRESSURIZED.
THE HOT, HIGH-PRESSURE AIR CAN CAUSE INJURIES TO PERSONNEL,
AND DAMAGE TO EQUIPMENT.
CAUTION
MAKE SURE THAT THE MAINTENANCE AREA IS FREE OF CONTAMINATION
FROM SKYDROL, LUBRICANTS, SOLVENTS, FUEL, FUMES, EXHAUST, OR
DUST. DO NOT LET SOLVENTS, LUBRICANTS, OTHER FLUIDS, OR THEIR
FUMES GO INTO THE FLOW PATH TO OR FROM THE AIR SEPARATION
MODULE. CONTAMINATION WILL CAUSE DAMAGE TO THE FIBERS IN THE
AIR SEPARATION MODULE AND DECREASE THEIR LIFE.
(5) Obey the nitrogen generation system (NGS) precautions (TASK 47-00-00-010-801).
SUBTASK 47-43-01-020-002
(6) Do these steps to disconnect the ram air valve exhaust duct at the front and aft ends.
NOTE: These steps are make it easier to get access to the pressure switch [1].
(a) Loosen the hose clamps at the front and rear of the exhaust hose.
(b) Remove the hose.
1) Keep the hose and the two clamps for the installation.
737-600/700/800/900
AIRCRAFT MAINTENANCE MANUAL
47-43-01
Page 402
D633A101-ILF Oct 15/2019
ECCN 9E991 BOEING PROPRIETARY - Copyright © Unpublished Work - See title page for details
EFFECTIVITY
ILF 402, 452, 509, 510, 523, 525-528, 568, 569, 576, 577, 581, 583, 585, 588-590,
592-599, 601-603, 606, 607, 610-615, 620, 625-627, 691-699, 833-835, 838, 971, 980-999;
ILF 101, 151, 156-199, 301, 304, 308, 310, 314, 315, 317-319, 323, 331-399, 401, 405,
406, 409, 410, 412, 416, 424, 425, 427-429, 451, 501-504, 507, 508, 512-514, 516, 518,
524, 531-533, 535-537, 541, 542, 552-556, 560-562, 567, 571-575, 671, 672, 686, 703,
707-710, 803-813, 821, 822, 831, 832, 836, 837, 841, 842, 851, 852, 854-858, 861-863,
871-874, 947, 948, 968-970, 972, 973 POST SB 737-47-1003