SUBTASK 47-32-03-020-003
(8) Do these steps to remove the tube [2] that is under the heat exchanger [11] (View B):
(a) Loosen the nut on the tube [2] from the tee [7].
(b) Loosen the nut on the other end of the tube [2] from the airplane structure.
(c) Remove the tube [2].
SUBTASK 47-32-03-030-001
(9) Loosen the hose clamp [14] that connects the heat exchanger [11] to the flex hose [15] (View
C).
NOTE: The hose clamp [14] is above the ram air inlet duct on the forward end of the heat
exchanger [11]. If you can not see the hose clamp [14], you can feel it with your hand.
SUBTASK 47-32-03-010-002
(10) Do this task to get access to the heat exchanger [11]: Ram Air Ducts - Removal,
TASK 21-51-24-000-801.
NOTE: When you remove the ram air duct, the flex hose [15] will stay attached to the ram air
inlet duct. You must pull the flex hose [15] off the ram air inlet duct.
E. Remove the Heat Exchanger
SUBTASK 47-32-03-030-002
(1) Remove the coupling [10] between the bleed air inlet duct and the heat exchanger [11].
(a) Keep the coupling [10] for the installation.
(b) Discard the two o-rings [9].
SUBTASK 47-32-03-030-003
(2) Remove the coupling [10] between the bleed air outlet duct and the heat exchanger [11].
(a) Keep the coupling [10] for the installation.
(b) Discard the two o-rings [9].
SUBTASK 47-32-03-030-004
(3) Remove the coupling [13] between the ram air valve and the heat exchanger [11].
(a) Keep the coupling [13] and seal [12] for the installation.
SUBTASK 47-32-03-030-005
(4) Remove the flex hose [15] between the ram air inlet duct and the heat exchanger [11].
(a) Keep the two flex hoses [15] and hose clamp [14] for installation.
SUBTASK 47-32-03-030-006
(5) Do these steps to disconnect the attached brackets (View D, View F).
(a) Remove the bolt [16], washer [17], two bushings [18], washer [19], and nut [20].
(b) Keep the fasteners for the installation.
SUBTASK 47-32-03-030-007
(6) Do these steps to disconnect the extension rod [23] (View E)
(a) Remove the bolt [21], washer [17], bushing [22], washer [24], and nut [20].
(b) Keep the fasteners for the installation.
SUBTASK 47-32-03-020-001
(7) Do these steps to remove the heat exchanger [11] from the attached bracket (View G):
(a) Hold the heat exchanger [11] in its position.
737-600/700/800/900
AIRCRAFT MAINTENANCE MANUAL
47-32-03
Page 403
D633A101-ILF Oct 15/2019
ECCN 9E991 BOEING PROPRIETARY - Copyright © Unpublished Work - See title page for details
EFFECTIVITY
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ILF 101, 151, 156-199, 301, 304, 308, 310, 314, 315, 317-319, 323, 331-399, 401, 405,
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