F. Install the Ram AIr Valve
SUBTASK 47-32-05-840-001
(1) Use the manual locking hex bolt [10] to close the ram air valve [1].
SUBTASK 47-32-05-100-001
(2) Remove the sealant from the bonding jumper [2], bolt [11], washers [12], nut [14], and the
bonding tab.
SUBTASK 47-32-05-110-001
(3) Make sure that the ram air valve [1], the heat exchanger, couplings [8], coupling [13], hose
clamps [6], and the flexible hose [7] are clean, free from grease and unwanted material.
SUBTASK 47-32-05-110-002
(4) To clean the components, do this task: General Cleaning of Metal (Series 80),
TASK 20-30-80-910-801.
SUBTASK 47-32-05-110-003
(5) Prepare these components for an electrical faying surface bond (SWPM 20-20-00):
(a) Contact surfaces of the bonding tab on the ram air valve [1].
(b) Contact surfaces of the bonding jumper [2].
SUBTASK 47-32-05-430-001
WARNING
KRYTOX 240AC IS AN AGENT THAT IS POISONOUS AND AN IRRITANT.
MAKE SURE ALL PERSONS OBEY THE PRECAUTIONS WHEN KRYTOX
240AC IS USED.
• DO NOT USE IN AREAS WHERE THERE IS HIGH HEAT, SPARKS, OR
FLAMES.
• CLOSE THE CONTAINER WHEN NOT USED.
• DO NOT GET KRYTOX 240AC IN THE EYES, ON THE SKIN, OR ON YOUR
CLOTHES.
• DO NOT BREATHE THE GAS.
• DO NOT EAT KRYTOX 240AC.
(6) Do these steps to install the O-rings [9]:
(a) Apply a thin layer of Krytox 240AC perfluoropolyether grease, D50063, to the two
O-rings [9].
(b) Install one O-ring [9] in the in the cavity on the ram air valve [1].
(c) Install one O-ring [9] in the in the cavity on the exhaust duct [5].
SUBTASK 47-32-05-420-001
(7) Do these steps to install the ram air valve [1]:
(a) Put the ram air valve [1] in its position.
(b) Install the seal [15] in the cavity between the heat exchanger and the ram air valve [1].
(c) Install the coupling [8] on the ram air valve [1] and the heat exchanger.
(d) Install the flexible hose [7] on the ram air exhaust duct in the lower fairing.
(e) Install the flexible hose [7] to the exhaust duct [5].
(f) Tighten the hose clamp [6] on the ram air exhaust duct in the lower fairing.
(g) Connect the muscle air line [4] to the ram air valve [1].
737-600/700/800/900
AIRCRAFT MAINTENANCE MANUAL
47-32-05
Page 407
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ECCN 9E991 BOEING PROPRIETARY - Copyright © Unpublished Work - See title page for details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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