SUBTASK 30-71-00-010-001
(1) Get access to the heater and controlling thermostat (if applicable).
(a) Use the schematic (SSM 30-71-11) to determine the location of the heater and
thermostat.
(b) Use (Figure 501) to identify access requirements.
(c) Do the necessary tasks to access the heater and thermostat.
1) Do this task: Cargo Floor Panel Removal, TASK 25-52-10-000-801.
2) Do this task: Forward Cargo Compartment Aft Bulkhead Liner - Removal,
TASK 25-52-17-000-801.
3) Do this task: Aft Cargo Compartment Aft Bulkhead Liner - Removal,
TASK 25-52-19-000-801.
4) Do this task: Cargo Compartment Sidewall Lining - Removal,
TASK 25-52-06-000-801.
5) Do this task: Waste Tank Enclosure Panel - Removal, TASK 25-52-20-000-801.
6) Do this task: Carpet Removal, TASK 25-27-15-000-801.
7) Do this task: Entry and Service Area Floor Covering - Removal,
TASK 25-27-21-000-801.
SUBTASK 30-71-00-720-003
(2) If the heater is controlled by a thermostat apply the MS-242N spray, G02319, ice, G02320, or
dry ice to decrease the temperature of the thermostat, (WDM 30-71-11).
SUBTASK 30-71-00-720-004
(3) Make sure the heater gets warm.
(a) You can use a Infrared Thermometer, COM-1572 or other temperature measuring device
to make sure there is an increase of at least 10 degrees F (6 degrees C) above the
ambient air temperature.
(b) As an alternative, you can use a clamp-on current meter, COM-2531 or equivalent to
measure the current to the heater.
(c) Current to the heater indicates that the heater is operating.
G. Put the Airplane Back to its Usual Condition
SUBTASK 30-71-00-410-002
(1) Replace or close the panels or doors used to access the heater and thermostat.
(a) Do this task: Cargo Floor Panel - Installation, TASK 25-52-10-400-801.
(b) Do this task: Forward Cargo Compartment Aft Bulkhead Liner - Installation,
TASK 25-52-17-400-801.
(c) Do this task: Aft Cargo Compartment Aft Bulkhead Liner - Installation,
TASK 25-52-19-400-801.
(d) Do this task: Cargo Compartment Sidewall Lining - Installation, TASK 25-52-06-400-801.
(e) Do this task: Waste Tank Enclosure Panel - Installation, TASK 25-52-20-400-801.
(f) Do this task: Carpet - Installation, TASK 25-27-15-400-801.
(g) Do this task: Entry and Service Area Floor Covering - Installation,
TASK 25-27-21-400-801
END OF TASK
737-600/700/800/900
AIRCRAFT MAINTENANCE MANUAL
30-71-00
Page 505
D633A101-ILF Oct 15/2017
ECCN 9E991 BOEING PROPRIETARY - Copyright © Unpublished Work - See title page for details
EFFECTIVITY
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