3512 and 3516 EUI Engines and 784B, 785B, 789B and 793B Off-Highway Truck/Tractors Caterpillar

Illustration 1	g00904682
Typical example

(1) Connector

(2) Rivet head for test procedure

Test with the paddle in a vertical position and the force (F) on rivet head (2):

With an increase in flow (force), the switch opens at the following value: ... 0.362 ± 0.029 N (0.0814 ± 0.0065 lb)

With a decrease in flow (force), the switch closes at the following minimum value: ... 0.303 N (0.0681 lb)

Note: When the switch is installed in the engine cooling system, there is not enough force from the flow of coolant at engine cranking speed in order to activate the switch. When the engine is running at low idle, the flow of coolant has enough force in order to activate the switch.