F. Remove the Pressure Switch
SUBTASK 47-43-01-010-002
(1) Go to the pressure switch [1] location.
NOTE: The pressure switch [1] is attached to the air filter inlet duct [6].
SUBTASK 47-43-01-020-003
(2) Disconnect the electrical connector [2].
SUBTASK 47-43-01-020-004
(3) Remove the applicable lockwire.
SUBTASK 47-43-01-030-002
(4) Disconnect the sense line [3].
NOTE: Use a second wrench to hold the pressure switch [1] when you disconnect the sense
line [3].
SUBTASK 47-43-01-030-003
(5) Loosen the nut [4].
NOTE: Use a second wrench to hold the boss [7] when you loosen the nut [4].
NOTE: The sense line [3] is rigid. Do not bend the sense line [3]when you remove the
pressure switch [1].
SUBTASK 47-43-01-020-001
(6) Remove the pressure switch [1].
NOTE: Keep the nut [4] for the installation.
(a) Discard the o-ring [5].
(b) Keep the washer [8]
SUBTASK 47-43-01-800-001
(7) Put protective caps on the sense line [3] and the duct [6] to keep out unwanted material.
END OF TASK
737-600/700/800/900
AIRCRAFT MAINTENANCE MANUAL
47-43-01
Page 403
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ECCN 9E991 BOEING PROPRIETARY - Copyright © Unpublished Work - See title page for details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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