Operate Hydraulic Motor

IMPORTANT: Avoid damage to hydraulic motors. Use only SCVs equipped with flow control or power beyond to operate hydraulic motors.

NOTE: To understand motor requirements, refer to implement operator’s manual.

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A - SCV Motor Detent

B - Adjustable Flow Control Valve

Use SCV retract coupler (A) on a valve with adjustable flow control for hydraulic motor operations.

To regulate oil flow when operating a hydraulic motor with any standard valve without adjustable flow control, use an external flow control valve.

IMPORTANT: Never regulate oil flow from an SCV with a flow control valve using an external flow control valve. Having two flow control valves in the same hydraulic circuit overheats oil, causing component malfunctions and damage.

DO NOT use deluxe rear SCV for any low flow, high-pressure applications such as the SEEDSTAR™ variable rate drive planter motor or active downforce circuits. PTO driven hydraulic motor is recommended for low flow, high-pressure applications.


Recommendations to Avoid Hydraulic Motor Damage

Use hydraulic motor return coupler for implements having:

  • Single directional hydraulic motor.
  • Hydraulic motor with a low-pressure shaft seal.
  • Hydraulic motor with an internal case drain.

Use hydraulic motor case drain connection for implements having motor with a case drain line. See “Case Drain” in this section.

IMPORTANT: If implement motor is not equipped with return coupler, use “float” position to stop hydraulic motor.


Hydraulic Motor Hose Connections and SCV Lever Operations

IMPORTANT: Use only SCVs with adjustable flow control for “continuous” (motor) applications.

  1. Shut off engine.

  2. Move SCV lever to be connected to motor full forward, into “float” detent.

  3. Connect hydraulic motor supply hose to the SCV retract coupler and return hose to the SCV extend, or case drain as required by application.

  4. Set SCV lever detent for continuous “motor” operation.

  5. Start engine.

  6. DO NOT return hydraulic motor directly to sump via a port on differential case, except intermittent high-pressure applications, such as a post pounder.

    To activate hydraulic motor, move SCV lever to ”retract” position.

  7. To stop hydraulic motor, move SCV lever fully forward into “float” detent.

    IMPORTANT: To stop hydraulic motor, do not use neutral lever position.

  8. Shut off engine and disconnect hoses from couplers.

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