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 TM 5-4120-386-14
4-33. HEATER ELEMENTS-Continued.
REMARKS
LOCATION/ITEM
ACTION
Inspection
Inspect for damage to
a.
1. Heater Elements
elements or leads.
and Electrical
Replace damaged leads and
b.
Wiring
bad elements.
a.
Inspect for warping or cracking.
2. Heater
Replace as necessary.
b.
Mounting
Bracket
Inspect for damaged or missing
a.
3. Heater
insulation (20).
Mounting
Replace as necessary.
b.
Bracket
Insulation
Inspect TB2 (4) for corrosion or
4. Terminal
a.
damage.
Board (TB2)
Replace as necessary.
b.
Test elements (3) for resistance
Test
(40 to 50 ohms).
Tag and disconnect leads from
a.
Removal
terminal board TB2 (4).
Remove three screws (9) and
b.
three lockwashers (10) securing
heater mounting bracket (11)
to housing.
For each heater element,
c.
Remove nut (12), lockwasher
(13), and flatwasher (14)
securing heater element (3)
to heater mounting bracket
(11).
4-88
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