3412 INDUSTRIAL & MARINE ENGINE ATTACHMENTS Caterpillar

2N7744 Switch (Texas Instrument No. 20PS66-1)

Test switch at a temperature of ... 25°C (77°F)

With an increase in pressure, switch closes at ... 44 ± 19 kPa (6.4 ± 2.7 psi)

With a decrease in pressure, switch opens at ... 27 ± 23 kPa (3.9 ± 3.3 psi)

4N4696 Switch (Texas Instrument No. 20PS68-4)

Test switch at a temperature of ... 25°C (77°F)

With an increase in pressure, switch closes at ... 41.4 ± 29.0 kPa (6.0 ± 4.2 psi)

With a decrease in pressure, switch opens at ... 22.1 ± 10.0 kPa (3.2 ± 1.5 psi)

6N2466 Switch (Texas Instrument No. 20PS66-3)

With an increase in pressure, switch closes at ... 145 ± 28 kPa (21 ± 4 psi)

With a decrease in pressure, switch opens at ... 90 ± 28 kPa (13 ± 4 psi)