Implement Connection Example 4—Planter with Vacuum Motor and Return Line to SCV Using Motor Return Tip—With Hitch—High Flow Hydraulics

RXA0126183-UN-03MAY12

A - Pressure Line

B - Return Line

C - Marker

D - Fold

E - Flow Control Valve (Wide Open)

F - Vacuum Motor

G - Motor Return Tip

H - T-fitting and Hydraulic Hose

I - Lift Assist Cylinders

J - Extend Coupler Line

K - Retract Coupler Line

In this application vacuum motor (F) receives pressure oil from the retract port of 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 the 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 possible damage to seals.

Control valve (E) is wide open and flow is controlled by tractor control panel. If valve is used to control oil flow, pump will operate at maximum pressure which may cause overheating of hydraulic oil if at the same time outside air temperature is high.

Connect lift assist cylinders (I) with T-fitting and hydraulic hose (H) to hitch lowering valve. The hitch lever controls the lift assist cylinders.