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12 EATON 420 Mobile Piston Pump Technical Manual E-PUPI-TM002-E4 November 2014

“J” Load Sense

Signal Port

“B” Inlet

“F” Case

Drain

“C” Outlet

To Load

Optional Bleed-down Orice in

Code A or B with Control Special Feature "A".

Ø 0,4 mm (.015 In.). Orice is Plugged for No

Bleed Down in Control Code A or B.



“K” Inlet

Gage Port

(Optional)

“K” Inlet

Gage Port

(Optional)

Control Options

Cold Start Valve

The 420 Cold Start Valve

reduces pump start-up

torque by directing control

pressure to the outlet.

It is primarily used in cold

weather applications and

includes a 12 or 24 VDC

directional control valve

mounted between the pump

housing and compensator.

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Eton e4 Bedienungsanleitung Seite 12