SUBTASK 47-11-01-010-002
(2) Go to the air separation module (ASM) location.
NOTE: The ASM is in the left ram air duct bay.
SUBTASK 47-11-01-020-003
(3) Do these steps to remove the air separation module [1]:
NOTE: Keep the clamps, sleeves, fasteners, and couplings for installation.
(a) Remove the clamp [11] between the air separation module [1] and the overtemperature
shutoff valve [10].
1) Discard the O-ring [12].
(b) Remove the overtemperature shutoff valve [10] (TASK 47-11-04-000-801).
NOTE: The removal of the overtemperature shutoff valve [10] is optional.
(c) Disconnect the coupling [15] between the high flow valve [14], and the air separation
module [1].
1) Remove the sleeve [13].
2) Discard the two O-rings [16].
(d) Disconnect the coupling [18] from the OEA outlet port [17] and the OEA exhaust
duct [21].
1) Remove the sleeve [19].
2) Discard the two O-rings [20].
(e) Remove the three bolts [3], washers [4], and nuts [2] from the brackets [5] on the muscle
air duct [9].
(f) Remove the three bolts [24], washers [23], and nuts [25] from the brackets [22] on the
NEADS duct [27].
(g) Hold the air separation module [1] in its position.
(h) Remove the insulation tape that covers the strap [8].
(i) Loosen the nut [28] on the strap [8].
1) Separate the strap [8].
(j) Loosen the nut [29] on the strap [26].
1) Separate the strap [26]
(k) Remove the air separation module [1].
(4) Place the air separation module [1] on a clean surface.
(5) Do these steps to remove the body insulation [64], aft insulation [62], and forward
insulation [63] from the air separation module [1]:
(a) Cut the four ties on the surface of the body insulation [64].
(b) Slice the tape at the seam line to remove the forward insulation [63], body insulation [64]
and aft insulation [62] from the air separation module [1].
NOTE: Be careful not to slice into the insulation, it will be reused for the installation.
(c) Remove the insulation.
(6) Loosen the setscrews [7] on the on the ASM hose clamps [6].
(a) Remove the brackets [5], brackets [22] and ASM hose clamp [6].
737-600/700/800/900
AIRCRAFT MAINTENANCE MANUAL
47-11-01
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ECCN 9E991 BOEING PROPRIETARY - Copyright © Unpublished Work - See title page for details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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