TASK 30-41-31-400-801
3. Thermal Switch Installation
(Figure 401)
A. Tools/Equipment
NOTE: When more than one tool part number is listed under the same "Reference" number, the
tools shown are alternates to each other within the same airplane series. Tool part numbers
that are replaced or non-procurable are preceded by "Opt:", which stands for Optional.
Reference Description
COM-1572 Thermometer - Infrared, Intrinsically Safe
737-600, -700, -800
Part #: 568 Ex Supplier: 89536
Opt Part #: DHS24XC-FM Supplier: 08086
Opt Part #: DHS24XF-FM Supplier: 08086
Opt Part #: EX-MP4 A Supplier: 3GT36
Opt Part #: IR-16L3 IS Supplier: 75037
STD-1179
Tester - Pyrometer
B. Consumable Materials
Reference Description Specification
A00214 Compound - Honeycomb Edge Filling &
Potting, Epoxy Based, 2 Part RT Cure (20 Min
Gel)
BMS5-28 Type 3
A50061 Adhesive - Epoxy BAC5010 Type 54
B00083 Solvent - VM&P Naphthas TT-N-95 Type II, ASTM
D-3735 Type III
D00095 Lubricant - Dry Film - MS122
G50427 Compound - Thermal Heat Sink A-A-56022,
MIL-DTL-47113
C. Location Zones
Zone Area
212 Flight Compartment - Right
D. Prepare to Install the Thermal Switch
SUBTASK 30-41-31-420-008
(1) Remove the old fairing compound from the window.
SUBTASK 30-41-31-420-009
(2) Clean the face of the thermal switch [2] with solvent, B00083.
SUBTASK 30-41-31-420-010
(3) Clean the surface of the window where it will touch the thermal switch [2] with solvent, B00083.
SUBTASK 30-41-31-420-011
(4) Prepare the fairing compound, A00214, that bonds the thermal switch [2] to the window.
SUBTASK 30-41-31-420-012
(5) Find the correct location to install the thermal switch [2].
(a) Look for the arrow that is on the inner surface of the window.
(b) Put the vertical center-line of the thermal switch [2] as near as possible to the location
indicated by the positioning arrow.
737-600/700/800/900
AIRCRAFT MAINTENANCE MANUAL
30-41-31
Page 406
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ECCN 9E991 BOEING PROPRIETARY - Copyright © Unpublished Work - See title page for details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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