3304B & 3306B MARINE ENGINES Caterpillar

When installing switch, tighten to a maximum of ... 40 ± 5 N·m (29 ± 3.7 lb ft)

Terminal No. 1 is common.

Terminal No. 2 is normally open.

Terminal No. 3 is normally closed.

6T6652

With pressure increase, terminal 2 closes and terminal 3 opens at ... 158 ± 28 kPa (22.9 ± 4.1 psi)

With pressure decrease, terminal 2 opens and terminal 3 closes at ... 124 ± 21 kPa (18.0 ± 3.0 psi)

Temperature Switch Assembly

When installing switch tighten to a torque of ... 52 ± 8 N·m (38 ± 6 lb ft)

Terminal A is normally open.

Terminal B is common.

Terminal C is normally closed.

2W8916

With an increase of temperature, switch must close between ... 91 and 93°C (195.8 and 199.4°F)

With a decrease of temperature, switch must open at a minimum of ... 85°C (185°F)