Bleed Variable Rate Motor Hydraulics

NOTE: Bleeding VRD motors is required to remove air from system after repairs are made to any hydraulic drive motor or valve.

  1. Start tractor and run at slow idle until hydraulic oil reaches operating temperature.

  2. A74367
    A74367-UN-20FEB12

    A - Half-Width Disconnect Handles

    Meters That Are Being Bled: Push both half-width disconnect handles (A) up to stop product flow.



  3. Access Hydraulic Maintenance by using Quick Select Button J to navigate to Diagnostics and Test screen.

  4. A73557
    A73557-UN-15NOV11

    A74520
    A74520-UN-15FEB12

    A - Motor Selection

    B - Drop-down List

    C - Motor Speed Selection, Calibrate Valve

    D - Start

    Select a meter check box (A) to run that motor. (Choose one meter at a time in running procedure.)



  5. Select drop-down (B) and set to calibrate valve (C).

  6. Select Start button (D).

  7. IMPORTANT: A 2 mm hex screw (C) bleeder is located inside the valve (B).

    A71187
    A71187-UN-07APR11

    A74514
    A74514-UN-12NOV12

    A - Valve Block

    B - Valve

    C - Bleed Fitting, 2 mm Set Screw

    Locate valve block (A) for motor being bled.



  8. Locate bleed fitting (C) inside valve (B).

  9. IMPORTANT: Do not remove or over loosen set screw.

    Slowly loosen set screw to allow air and oil to bleed from system.

  10. Once air bubbles or foam no longer appear, tighten set screw.

  11. Repeat for each motor as needed.

LD45720,0000543-19-20120830