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TM 10-4130-239-14
5-29.
LOW TEMPERATURE THERMAL SWITCH REPLACEMENT (CONT)
3.
Break up foam insulation to gain access
on the side of warm (inlet) pipe.
to thermal switch located
WARNING
Polyurethane foam is flammable.
Burning foam
causes toxic fumes.
When soldering, be very
careful not to ignite foam.
4.
Desolder two wires from thermal switch.
Remove wires.
5.
Pry thermal switch away from pipe.
1.
2.
3.
4.
5.
6.
7.
8.
9.
Place new switch against pipe at removal site.
Using bonding compound, bond switch to pipe.
Let compound dry
until it hardens.
Use tiedown straps to secure switch to pipe.
Seal any gaps between switch and pipe with sealant.
NOTE
Wire must be fed through cover before attaching
wires to switch.
Attach one wire to each thermal switch terminal.
(Reversing
wires does not matter.)
Solder two wires to thermal switch terminals.
Spray with mold release.
Install cover.
Fill in all open areas with polyurethane foam.
10. Install engine (para 4-25).
5-71
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