Concave Leveling (Active Concave Isolation)

1. 
   H117012-UN-28MAR16

   Threshing Clearance Adjust

   If installed, remove round bar concave covers before beginning concave leveling.

   Start engine and press threshing clearance adjust switch.

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2. Set threshing clearance to 0.

   If taller dense pack threshing tines or rice threshing elements have replaced grain elements, set threshing clearance to 15.

3. Shut OFF engine, set park brake and turn key switch ON.

4. 
   H113295-UN-23MAR15

   A - Separator Inspection Covers

   Remove separator inspection covers (A).

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5. 
   H109596-UN-17DEC13

   Standard Cast Separator Grates

   
   H109682-UN-22JAN14

   Heavy-Duty Separator Grates

   A - Cap Screws (4 used)

   B - Separator Grate

   C - Cap Screws and Nuts

   D - Separator Grate Fingers

   Removing separator grate provides access for rotating rotor.

   On machines equipped with the standard separator grates, remove cap screws (A) and separator grate (B).

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6. On machines equipped with heavy-duty separator grate fingers, remove cap screws and nuts (C) and finger (D).

   It may be necessary to remove two or more separator grate fingers to allow access for rotating rotor.

7. 
   H109276-UN-16OCT13

   A - Rubber Seal (2 used)

   Remove base of the rubber seal (A) and lift upward on both cylinders.

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8. 
   H113060-UN-24FEB15

   A - Pin (2 used)

   B - Cylinder Lock (2 used)

   Concave may need to be repositioned to remove cylinder lock.

   Remove pin (A) and cylinder lock (B) on each cylinder.

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9. 
   H109919-UN-27FEB14

   
   H109920-UN-27FEB14

   A - Leveling Cap Screws (2 used)

   B - “Z” Bar

   C - Nut (2 used)

   D - Nut (2 used)

   E - Nut (2 used)

   Remove concave leveling cap screws (A) from the bracket on “Z” bar (B) and install through the rail to hold concave and “Z” bar assembly.

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10. Hand tighten nut (C) against “Z” bar bracket and slightly tighten nut (D) against the rail on both sides.

    Verify that there is adequate space between nut (E) and rail for zeroing adjustments. Do NOT fully tighten the nut against the rail.

11. 
    H109683-UN-22JAN14

    A - Jam Nut (2 used)

    B - Cylinder Stop (2 used)

    Loosen jam nut (A) from the cylinder stop (B) and lower stop on both cylinder rods.

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12. Select Concave Leveling Calibration from inside the cab and follow information shown on the display. See Calibrations Application Help or Operator's Station Help for further information.

    Key switch MUST be left ON while performing following steps outside of cab.

13. 
    H96927-UN-17JUN10

    A - Handle

    B - Neutral Position

    Move handle (A) to shift the rotor gear case in neutral position (B).

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14. Spin rotor counterclockwise and tighten rear leveling cap screw, pulling concave upward until elements “tick”. Once “ticking” occurs, back off leveling cap screw three complete turns.

15. Spin rotor counterclockwise and tighten front leveling cap screw, pulling concave upward until elements “tick”. Once “ticking” occurs, back off leveling cap screw three complete turns.

16. Continue spinning rotor counterclockwise and tighten rear leveling cap screw, pulling concave upward until elements “tick”. Once “ticking” occurs, back off leveling cap screw one and a half turns.

17. Continue spinning rotor counterclockwise and tighten front leveling cap screw, pulling concave upward until elements “tick”. Once “ticking” occurs, back off leveling cap screw one and a half turns.

18. 
    H109594-UN-16DEC13

    A - Nut 2 (used)

    Tighten nut (A) against the rail to help lock concaves in position.

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19. 
    H109602-UN-19DEC13

    A - Cylinder Stops (2 used)

    B - Cylinder Barrels (2 used)

    During the calibration, it is critical to adjust the cylinder stops correctly.

    Do not over tighten cylinder stops.

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20. Turn cylinder stops (A) in direction of arrow until hand tight against cylinder barrels (B).

21. 
    H109683-UN-22JAN14

    A - Jam Nut (2 used)

    B - Cylinder Stop (2 used)

    Prior to tightening jam nuts (A), index cylinder stops (B) to install cylinder locks in correct position on hex flats of cylinder stops.

    Tighten jam nut (A) against the cylinder stop (B) on each cylinder.

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22. Leveling cap screws MUST remain fastened to “Z” bar bracket and rail.

    Continue with Concave Leveling Calibration until complete.

23. 
    H109603-UN-19DEC13

    A - Leveling Cap Screw (2 used)

    B - Storage Bracket (2 used)

    If calibration was accepted, exit Concave Leveling Calibration, turn key switch OFF, and remove leveling cap screws (A).

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24. Store leveling cap screws in storage brackets (B).

25. Start engine. Calibrate Threshing Clearance Calibration (Hydraulic) from inside the cab and follow information shown on the display. See Calibrations Application Help or Operator's Station Help for further information.

    A warning message may appear on display stating to abort the calibration because the system has detected a concave zero position that does not match concave leveling position. If this occurs, abort Concave Leveling Calibration, repeat the Concave Leveling procedure, and calibrate Threshing Clearance Calibration (Hydraulic) again.

26. 
    H113060-UN-24FEB15

    A - Pin (2 used)

    B - Cylinder Lock (2 used)

    Open concave to 35 and install previously removed cylinder locks (B) and pins (A) on each cylinder.

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27. 
    H109821-UN-10FEB14

    A - Rubber Seal (2 used)

    Install bottom of the rubber seal (A) on both cylinders.

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28. 
    H109596-UN-17DEC13

    Standard Cast Separator Grate

    
    H109682-UN-22JAN14

    Heavy-Duty Separator Grate

    A - Cap Screws (4 used)

    B - Separator Grate

    C - Cap Screws and Nuts

    D - Separator Grate Fingers

    On machines equipped with the standard separator grates, install separator grate (B) using cap screws (A).

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29. On machines equipped with heavy-duty separator grates, install separator grate fingers (D) using cap screws and nuts (C). Tighten to specification.

    Heavy-Duty Separator Grate Cap Screws and Lock Nuts	Torque	73 N·m (54 lb·ft)

30. Shift rotor drive gear case to previous position.

31. Install previously removed separator inspection covers and shields.