TM 10-4130-237-14
5-27. LOW TEMPERATURE THERMAL SWITCH REPLACEMENT (CONT)
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Break Up foam insulation to gain access to thermal switch located on the side of warm (inlet)pipe.
Polyurethane foam is flammable. Burning foam causes toxic fumes. When
soldering, be very careful not to ignite foam.
Desolder two wires from thermal switch. Remove wires.
Pry thermal switch and bracket away from pipe.
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Place bracket and new switch against pipe at removal site.
Using bonding compound (MIL-S-11030), bond switch and bracket to inlet valve. Let compound dry
until it hardens.
Install one wire to each thermal switch terminal. (Reversing wires does not matter.)
Solder two wires to thermal switch terminals.
Fill in all open areas with polyurethane foam.
Install bottom plate. Install 16 bottom plate mounting screws.
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