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
SUBTASK 47-21-07-090-002
(3) Remove the protective cover from the dielectric hose [6] in the wheel well.
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
SUBTASK 47-21-07-210-001
47-AWL-01: CDCCL
(4) Make sure the integral honeycomb flame arrestor [1] (bulkhead fitting) is installed.
NOTE: CDCCL - Refer to the task: Airworthiness Limitation Precautions,
TASK 47-00-00-910-802, for important information on Critical Design Configuration
Control Limitations (CDCCLs).
NOTE: This is applicable to Airworthiness Limitation 47-AWL-01.
SUBTASK 47-21-07-100-003
(5) Make sure that the NEADS tube [5], flame arrestor [1], nut [3], and washer [2] are clean, free
from grease and unwanted material.
SUBTASK 47-21-07-765-001
(6) Prepare these components for an electrical mating surface bond (SWPM 20-20-00):
(a) flame arrestor [1]
(b) rear spar of the center tank where the flame arrestor [1] will attach
(c) washer [2]
(d) nut [3]
SUBTASK 47-21-07-760-002
47-AWL-01: CDCCL
(7) Install a fillet sealed fay surface bond between the flame arrestor [1] (bulkhead fitting) and the
structure outside the tank (SWPM 20-20-00).
NOTE: CDCCL - Refer to the task: Airworthiness Limitation Precautions,
TASK 47-00-00-910-802, for important information on Critical Design Configuration
Control Limitations (CDCCLs).
NOTE: This is applicable to Airworthiness Limitation 47-AWL-01.
I. Install the Flame Arrestor
SUBTASK 47-21-07-430-001
(1) Do these steps to install the o-ring [7] in the flame arrestor [1]:
(a) Put a thin layer of grease, D00128, or hydraulic fluid, D50090, on a new o-ring [7].
(b) Put the new o-ring [7] in the cavity on the flame arrestor [1].
737-600/700/800/900
AIRCRAFT MAINTENANCE MANUAL
47-21-07
Page 412
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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