WINDOW THERMAL SWITCH - REMOVAL/INSTALLATION
1. General
A. This procedure has these tasks:
(1) Removal of the thermal switch.
(2) Installation of the thermal switch.
TASK 30-41-31-000-801
2. Thermal Switch Removal
(Figure 401)
A. General
(1) This task gives instructions to remove the Thermal Switch.
ILF 502, 503, 514, 524, 707-710; ILF 101, 156-199, 301, 304, 308, 310, 314, 315, 317-319, 323, 332-399, 401, 409,
410, 412, 416, 424, 425, 427-429, 451, 501, 504, 507, 508, 513, 515, 516, 518, 531-533, 535-537, 541, 542, 552,
556, 557, 571-574, 576, 686, 803-813, 821, 822, 831, 854-856, 861-863, 871-873 PRE SB 737-56-1017
(2) The window number 5 thermal switches are installed near the top of the window.
ILF 301, 304, 308, 310, 314, 315, 317-319, 323, 331-399, 401, 424, 425, 427-429, 507, 533, 535, 537, 556, 557,
568, 583, 588, 592-596, 671, 672, 832, 836, 837, 841, 842, 968-970, 972, 973, 980-999; ILF 412 POST SB
737-30-1046
(3) The window number 3 thermal switches are installed near the bottom of the window.
ILF 301, 304, 308, 310, 314, 315, 317-319, 323, 331-399, 401, 424, 425, 427-429, 502, 503, 507, 514, 524, 533,
535, 537, 556, 557, 568, 583, 588, 592-596, 671, 672, 707-710, 832, 836, 837, 841, 842, 968-970, 972, 973,
980-999; ILF 101, 156-199, 409, 410, 416, 451, 501, 504, 508, 513, 515, 516, 518, 531, 532, 536, 541, 542, 552,
571-574, 576, 686, 803-813, 821, 822, 831, 854-856, 861-863, 871-873 PRE SB 737-56-1017; ILF 412 POST SB
737-30-1046 OR PRE SB 737-56-1017
(4) The windows have markings to indicate where to install the switch. A spring holds the thermal
switch against the window.
B. Location Zones
Zone Area
212 Flight Compartment - Right
C. Prepare for the Removal
SUBTASK 30-41-31-860-001
(1) Open these circuit breakers and install safety tags:
CAPT Electrical System Panel, P18-3
Row Col Number Name
D 1 C00226 WINDOW HEAT CONTROL RIGHT FRONT AC
D 2 C00225 WINDOW HEAT CONTROL LEFT SIDE AC
E 1 C00224 WINDOW HEAT CONTROL LEFT FRONT AC
E 2 C00227 WINDOW HEAT CONTROL RIGHT SIDE AC
ILF 301, 304, 308, 310, 314, 315, 317-319, 323, 331-399, 968-970, 972, 973, 980-999
F 1 C00222 WINDOW HEAT CONT RIGHT FRONT DC
F 4 C00223 WINDOW HEAT CONT RIGHT SIDE DC
F 5 C00220 WINDOW HEAT CONT LEFT FRONT DC
737-600/700/800/900
AIRCRAFT MAINTENANCE MANUAL
30-41-31
Page 401
D633A101-ILF Oct 15/2019
ECCN 9E991 BOEING PROPRIETARY - Copyright © Unpublished Work - See title page for details
EFFECTIVITY
ILF 301, 304, 308, 310, 314, 315, 317-319, 323, 331-399, 401, 424, 425, 427-429,
502, 503, 507, 514, 524, 533, 535, 537, 556, 557, 568, 583, 588, 592-596, 671, 672,
707-710, 832, 836, 837, 841, 842, 968-970, 972, 973, 980-999; ILF 101, 156-199,
409, 410, 416, 451, 501, 504, 508, 513, 515, 516, 518, 531, 532, 536, 541, 542,
552, 571-574, 576, 686, 803-813, 821, 822, 831, 854-856, 861-863, 871-873 PRE
SB 737-56-1017; ILF 412 POST SB 737-30-1046 OR PRE SB 737-56-1017
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