TM 9-4120-386-14
1.
Remove two screws (l), and flat washers (2), and nuts (3) and thermostatic
switch (4) from heater support.
2.
Tag and disconnect electrical leads from switch (4).
b.
INSPECTION.
1.
Check for external damage to heater switch.
2.
Check electrical leads for frayed or broken wires.
3.
Check terminals for security.
c.
TESTING.
Visually inspect the heater thermostat for cracks in the housing, missing pieces,
1.
or other damage.
2.
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