Implement Connection, Example 4—Planter with Vacuum Motor and Return Line to SCV Using Motor Return Tip

RXA0096596-UN-13AUG08

A - Pressure Line

B - Return Line

C - Marker

D - Fold

E - Flow Control Valve (Wide Open)

F - Vacuum Motor

G - Special Return Hose Tip

H - Extend Coupler Line

I - Retract Coupler Line

J - Case Drain Line¹

In this application vacuum motor (F), similar to a planter blower, receives pressure oil from the retract port on SCV. Since return oil is routed to an SCV, a special return hose tip (G) with check valve is required to prevent high pressure oil from moving back toward the motor and possibly damaging the seals. When motor is shut off, the SCV lever is moved to float position to allow motor to coast to a stop. Moving lever to neutral will cause motor to stop abruptly and may damage seals.

Flow control valve (E) should be wide open and flow controlled by SCV setup panel. If flow is controlled by flow control valve, it will cause hydraulic pump to operate at maximum pressure which may cause overheating of hydraulic oil if operating at same time outside air temperature is high.