Superheat Switch: Testing and Inspection

INSPECTION

COOLING TEMPERATURE SWITCH

CAUTION: Do not heat more than necessary.







1. Dip the metal part of the cooling temperature switch into engine oil and increase the oil temperature using a gas burner or similar.







2. When the oil temperature reaches the standard value, check that resistance is supplied between the terminals.







NOTE: When the oil temperature is 155 °C (311 °F) or more and there is no continuity, the resistance will not be 2 ohms or lower until the oil temperature reduces to 125 °C (257 °F) or less.