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 (Continued)
(Continued)
CAPT Electrical System Panel, P18-3
Row Col Number Name
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 47-42-01-010-001
(4) Open these access panels:
Number Name/Location
192BL ECS Ram Air Inlet Mixing Duct Panel - Forward
192CR ECS Access Door
E. Remove the Altitude Sensor
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.
SUBTASK 47-42-01-869-001
(1) Obey the nitrogen generation system (NGS) precautions (TASK 47-00-00-010-801).
SUBTASK 47-42-01-010-002
(2) Go to the altitude sensor [1] location.
NOTE: The altitude sensor is attached to the filter mounting bracket. It is attached to the aft
side of the mounting bracket with two clamps [8].
SUBTASK 47-42-01-030-001
(3) Disconnect the electrical connector [2].
SUBTASK 47-42-01-020-001
(4) Do these steps to remove the altitude sensor [1]:
(a) Remove the sealant from the nut [6], washers [5], and bonding jumper [7] where it
attaches to the ground clamp [3].
(b) Hold the altitude sensor [1] in its position.
(c) Remove the altitude sensor [1] from the clamps [8].
1) Remove the two screws [9] and washers [10] that attach the clamps [8] to the
mounting bracket.
(d) Disconnect the bonding jumper [7].
1) Remove the nut [6], washers [5], and screw [4] that attach the bonding jumper [7] to
the ground clamp [3].
(e) Keep the clamps and fasteners for the installation.
END OF TASK
737-600/700/800/900
AIRCRAFT MAINTENANCE MANUAL
47-42-01
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ECCN 9E991 BOEING PROPRIETARY - Copyright © Unpublished Work - See title page for details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
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