Connecting Hydraulic Implements

Connecting a hydraulic implement to SCVs is recommended for most of following applications. Power beyond may be required in some applications 1 .

Hydraulic Cylinders:
  • Connect to SCV couplers
  • Adjust flow rate and detent time
Hydraulic Motors:

IMPORTANT: Some motors are not equipped with over-speed protection. Extended operation above recommended speed could cause failure.

Using Selective Control Valves:

  • Connect to SCV
  • Connect motor seal drain line to motor seal drain coupler
  • Adjust flow rate and set detent time to continuous "C" OR connect motor inlet hose to retract SCV coupler
  • Connect motor return hose to power beyond return coupler
  • Operate motor between "retract" and "float"

Using Power Beyond:

  • Power beyond may be used for motor applications which have pressure compensated flow controls 1

NOTE: Connecting a motor return line to the SCV is only recommended for motors with over- running check valves and a motor return coupler that prevents reverse flow and coupler

"flow checking". (See Implement Connection Example 5 in this section.)

Implement Auxiliary Control Valves

See Implement Connection Example 1-Implement Control Valves in this section.

Open or Closed-Center Valves with Unloading Valve:

  • Connect pressure line to SCV
  • Adjust flow rate and set detent time to continuous "C"

Closed-Center Valve with Load-Sense Port:

  • Connection to power beyond is recommended.

Closed-Center Valve without Load Sensing:

  • Connect to power beyond 1
  • Connect to SCV

NOTE: Tractor hydraulic system will operate at high pressure. Increased hydraulic oil temperatures may result, if other functions are operating at continuous flow.

Power beyond may be required in some applications 1 :

  • Tractor SCV control is not needed-implement equipped with independent control valve
  • Implement control valve requires external load sense signal to prevent pump operation at high pressure
  • No other SCV outlets are available

1See Using Load-Sensing Hydraulic System-Power Beyond in this section

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