ENGINE AR-PRIMARY 4485402 - Caterpillar

Terminal No. 1 is normally open below actuation temperature.Terminal No. 2 is common.Terminal No. 3 is normally closed below actuation temperature.With a temperature increase of 98 1.5°C (208 35°F), terminal No. 1 closes and terminal No. 3 opens.With a temperature decrease of 91°C (196°F), terminal No. 1 opens and terminal No. 3 closes.(1) Final torque for switch assembly ... 52 8 N m (38 6 lb ft)108-3190
Terminal A is normally open below actuation temperature.Terminal B is common.Terminal C is normally closed below actuation temperature.With a temperature increase of 107.0 C° 1.5°C (225 35°F), terminal A closes and terminal C opens.With a temperature decrease of 100°C (212.0°F), terminal A opens and terminal C closes.(1) Final torque for switch assembly ... 52 8 N m (38 6 lb ft)3N7442
Typical IllustrationLow Water Temperature Switch
Switch must open between ... 24 and 29°C (75 and 84°F)Switch must close between ... 18 and 24°C (64 and 75°F)Ether Aid Temperature Switch
Switch must open between ... 35 and 41°C (95 and 106°F)Switch must close ... 27°C (81°F min)