Concave Leveling—Rice Configuration

1. NOTE: Round bar concave covers (if installed) should be removed prior to beginning concave leveling.

   Remove shielding as needed to access separator inspection covers.

   
   H96446-UN-20MAY10

   A - Separator Cover

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2. Remove separator inspection covers (A).

3. NOTE: Removing separator grate provides access for rotating rotor.

   Remove cap screws (A) and separator grate (B).

   
   H96447-UN-20MAY10

   A - Cap Screw (4 used)

   B - Separator Grate

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4. Back off stop bolts (A and B).

   
   H63912-UN-15MAY00

   
   H63911-UN-15MAY00

   A - Stop Bolt

   B - Stop Bolt

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5. Loosen lock nuts (A) and back off nuts (B) five turns each.

   
   H51982-UN-16FEB99

   A - Bottom Nut (2 used)

   B - Top Nut (2 used)

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6. Use concave adjusts switch to adjust concave up until worm gear (B) and sector gear (A) are bottomed out in the up position.

   
   H96450-UN-20MAY10

   Worm and Sector Gear

   
   BM000086-UN-23APR15

   S660 Rice Configuration

   A - Sector Gear

   B - Worm Gear

   C - Gear Tooth

   NOTE: To S660 model rice configuration, use concave adjusts switch to adjust concave up until worm gear (B) and sector gear (A) leaving one gear tooth (C) out, as illustrated.

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

   
   H96927-UN-17JUN10

   A - Handle

   B - Neutral Position

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8. Simultaneously adjust front upper nut (A) and rear upper nut (C), slowly raising concave until elements are clicking against concave while rotor is turning. The clicking results from interference between one of the threshing tines (E) and concave (F).

   
   H65419-UN-22NOV00

   
   CQ298698-UN-25FEB14

   A - Front Upper Nut

   B - Front Lower Locknut

   C - Rear Upper Nut

   D - Rear Lower Locknut

   E - Threshing Tine

   F - Concave

   G - Leveling Distance

   H - Toothed Element

   I - Concave Bar Width

   J - Concave Bar

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9. Obtain leveling distance (G) given by the measurement between the outer edge of concave bar (J) and the end of one of the teeth of toothed element (H). Leveling distance (G) must be equal to 12 mm (0.47 in) added to concave bar width (I).

   1. In small wire and large wire concave, the correct position for measuring is the ninth bar.

   2. In the round bar concave, the correct position for measuring is the eleventh bar.

      IMPORTANT: During the measurement should not be considered the folded plate which is screwed the Xbar in the concave.

10. If leveling distance (G) is not as required approach or remove the concave by tightening or loosening rear upper nut (C).

11. Adjust from the upper nut (A) downward until elements are clicking against concave. Return slowly until clicking ceases. When clicking stops, return one full turn and tighten the upper locknut.

12. Obtain leveling distance (G) again and carry out adjustments as necessary to make sure that final measurement is equal to 12 mm (0.47 in) added to concave bar width (I).

13. Hold front upper nut (A) with a wrench and tighten front lower locknut (B).

14. Hold rear upper nut (C) with a wrench and tighten rear lower locknut (D).

15. Adjust front and rear concave stop bolt (A) by tightening bottom nut (B) until head of bolt (C) is snug against concave. Tighten top nut (D) while holding bottom nut (B) with the open-end wrench.

    
    H65421-UN-22NOV00

    Front Stop Bolt

    
    H65420-UN-22NOV00

    Rear Stop Bolt

    A - Stop Bolt (2 used)

    B - Lock Nut

    C - Head of Bolt

    D - Lock Nut

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16. Install separator grate (B) and retain with cap screws (A).

    
    H96447-UN-20MAY10

    A - Cap Screw (4 used)

    B - Separator Grate

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17. Shift rotor drive gear case to previous position.

18. Install previously removed separator inspection covers and shields.

19. Calibrate concave position from the inside cab. (See Calibration Procedures section for further information.)