621F and 627F Wheel Tractor-Scrapers Hydraulic System Caterpillar


Pressure Switch (Ejector)

Usage:

627F 1DL



Illustration 1g00302205

Operating temperature ... -40° to 121° C (-40° to 249° F)

Actuation pressure within the operating temperature range ... 11700 ± 345 kPa (1697 ± 50 psi)

Minimum deactuation pressure within the operating temperature range ... 10000 kPa (1450 psi)

When the pressure is below deactuation pressure, pole 1 and pole 3 are normally closed.

When the pressure is above actuation pressure, pole 1 and pole 2 are normally closed.

(1) Final installation torque ... 100 ± 15 N·m (74 ± 11 lb ft)

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