G. Remove the Float Valve
SUBTASK 47-21-02-100-002
(1) Use the sealant removal tool, SPL-768 (sealant removal tool, COM-2481 or equivalent) to
remove the old sealant from around the float valve assembly [5] and the adapter [2].
NOTE: Do not remove the sealant from around the cover plate [1]. Do not remove the cover
plate [1] or the adapter [2].
NOTE: The sealant removal/application tools are shown in this task: Repair of Sealant Leaks
in the Fuel Tank Structure, TASK 28-11-00-300-803
SUBTASK 47-21-02-020-001
(2) Do these steps to remove the float valve assembly [5]:
(a) Hold the float valve assembly [5] in its position.
(b) Remove the four screws [4] and washers [3].
(c) Remove the float valve assembly [5] from the adapter [2] and the cover plate [1].
(d) Discard the used o-ring [6].
(e) Install a protective cover in the vent tube.
END OF TASK
737-600/700/800/900
AIRCRAFT MAINTENANCE MANUAL
47-21-02
Page 403
D633A101-ILF Oct 15/2019
ECCN 9E991 BOEING PROPRIETARY - Copyright © Unpublished Work - See title page for details
EFFECTIVITY
ILF 402, 451, 452, 494-500, 503, 504, 509, 510, 514, 523-528, 541, 560-564, 567-569, 574-577, 581, 583, 585,
588-590, 592-599, 601-603, 606, 607, 610-615, 620, 625-627, 671, 672, 691-699, 832-835, 838, 856-858, 947,
948, 968-973, 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, 501, 502, 507, 508, 512, 513, 516, 518, 531-533, 535-537, 542,
552-556, 571-573, 686, 703, 707-710, 803-813, 821, 822, 831, 836, 837, 841, 842, 851, 852, 854, 855, 861-863,
871-874 POST SB 737-47-1002 OR POST SB 737-47-1003 OR POST SB 737-47-1015; ILF 491-493, 515,
519, 520, 530, 557, 559 POST SB 737-47-1002 OR POST SB 737-47-1015
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