Thank you for your purchase of Kondex KX7 concaves! With each concave, you should have received a printed version of these installation instructions, hardware to mount the concaves, and hardware to bolt the KX7 frames together (where applicable). 

The items below are what you will need for KX7 concave installation.

  • Installation instructions
  • Hardware for bolting concaves together (for complete kits and ThreshStartTM kits, you will have extra hardware)
  • Hardware for mounting concaves in combine

Concave assemblies are heavy and awkward to handle. Another person may be needed to remove and install concave assemblies.

KX7 Recommendations

Settings and Maintenance

KX7 Setting Recommendations

Note: setting recommendations provided assume all other combine settings are adjusted accordingly and functioning properly.

  1. Reference all combine settings in your combine owner’s manual specific to the crops you are harvesting.
  2. All concave and rotor speed adjustment logic remains the same. Recommendations below represent what has been used in the field across different crops and conditions. Note: harvesting conditions can drastically change these recommendations.
  3. Concave Clearance: Typically, KX7 users harvest 1-5 more open on concave clearance than they ran with OEM concaves, specific to the crop being harvested.
    1. Conditions can significantly change this setting recommendation.
    2. If you were not previously running OEM concaves (rather using other aftermarket concaves), these reference points may not be valid.
  4. Rotor Speed: Typically, KX7 users can run on the lower end of recommended rotor speed, specific to the crop being harvested.
    1. Conditions can significantly change this setting recommendation.
    2. If you were not previously running OEM concaves (rather using other aftermarket concaves), these reference points may not be valid.

KX7 Maintenance Recommendations

Prior to operation, inspect concaves for damaged boxes, loose or missing hardware, or excessive wear. If you notice any of these issues, correct as needed to maintain optimal performance.

Installation Instructions by Make

AGCO Combines

KX7 Installation Instructions 

  1. Reference all concave removal and installation procedures in your combine owner’s manual.
  2. In your combine owner’s manual, locate and turn to the concave removal section.
  3. Remove current concaves from the combine, following concave removal procedures in your combine owner’s manual. 
  4. Install concaves in the configuration matching the KX7 kit that was ordered, typically MaxThreshTM concaves are in the front position(s) followed by MaxRoundTM concaves (See Figure 1).
    (Note: configurations may vary depending on region, crop conditions, and dealer recommendations.)
    1. Follow concave installation procedures in your combine owner’s manual.
    2. Loosely assemble hardware to mounting brackets. These will be tightened after all KX7 concaves are installed.

    FIGURE 1

  5. Tighten all mounting hardware and torque to 53 N•m (39 ft-lb).
  6. Once KX7 concaves are installed, level and zero your concaves following the procedures in your combine owner’s manual.
  7. Reference your owner’s manual to confirm that you have completed all steps after concave installation.

Case IH Flagship Combines

KX7 Installation Instructions 

  1. Reference all concave removal and installation procedures in your combine owner’s manual.
  2. In your combine owner’s manual, locate and turn to the concave removal section.
  3. Remove current concaves from the combine, following concave removal procedures in your combine owner’s manual. 
  4. Each removed concave will be replaced with two half-width KX7 concaves. Locate left- and right-hand concaves for installation accordingly.
  5. Install concaves in the configuration matching the KX7 kit that was ordered, typically MaxThreshTM concaves are in the front position(s) followed by MaxRoundTM concaves (See Figures 2a and 2b).
    (Note: configurations may vary depending on region, crop conditions, and dealer recommendations.)
    1. Follow concave installation procedures in your combine owner’s manual. (Note: two KX7 concaves will need to be installed for each single OEM concave removed.)
    2. Loosely assemble hardware to mounting brackets. These will be tightened after step 6.

    FIGURE 2A (models requiring front ramp)

    FIGURE 2B (models not requiring front ramp)

  6. Once all KX7 concaves are installed in the combine, use the holes along the radius of the frames and the hardware provided to loosely assemble the concave frames together (hardware provided in a zip-top bag).
    1. Assemble the two concaves in each module position together (See Figures 3a and 3b).

      FIGURE 3A (models requiring front ramp)

      FIGURE 3B (models not requiring front ramp)

    2. Concave assemblies should now mimic OEM concave configuration (See Figures 4a and 4b).

    FIGURE 4A (models requiring front ramp)

    FIGURE 4B (models not requiring front ramp)

  7. Tighten all mounting hardware (Steps 5 and 6) and torque to 53 N•m (39 ft-lb).
  8. Once KX7 concaves are installed, level and zero your concaves following the procedures in your combine owner’s manual.
  9. Reference your owner’s manual to confirm that you have completed all steps after concave installation.

Case IH Mid-Series Combines

KX7 Installation Instructions 

  1. Reference all concave removal and installation procedures in your combine owner’s manual.
  2. In your combine owner’s manual, locate and turn to the concave removal section.
  3. Remove current concaves from the combine, following concave removal procedures in your combine owner’s manual. 
  4. Each removed concave will be replaced with two half-width KX7 concaves. Install front ramp on the front-position concave (See Figure 5).

    FIGURE 5

  5. Install concaves in the configuration matching the KX7 kit that was ordered, typically MaxThreshTM concaves are in the front position(s) followed by MaxRoundTM concaves (See Figure 6).
    (Note: configurations may vary depending on region, crop conditions, and dealer recommendations.)
    1. Follow concave installation procedures in your combine owner’s manual. (Note: two KX7 concaves will need to be installed for each single OEM concave removed.)
    2. Loosely assemble hardware to mounting brackets. These will be tightened after step 6.

    FIGURE 6

  6. Once all KX7 concaves are installed in the combine, use the holes along the radius of the frames and the hardware provided to loosely assemble the concave frames together (hardware provided in zip-top bag).
    1. Assemble concave one to two, three to four, and five to six (See Figure 7).

      FIGURE 7

    2. Concave assemblies should now mimic OEM concave configuration (See Figure 8).

    FIGURE 8

  7. Tighten all mounting hardware (Steps 5 and 6) and torque to 53 N•m (39 ft-lb).
  8. Once KX7 concaves are installed, level and zero your concaves following the procedures in your combine owner’s manual.
  9. Reference your owner’s manual to confirm that you have completed all steps after concave installation.

John Deere Combines

KX7 Installation Instructions 

  1. Reference all concave removal and installation procedures in your combine owner’s manual.
  2. In your combine owner’s manual, locate and turn to the concave removal section.
  3. Remove current concaves from the combine, following concave removal procedures in your combine owner’s manual.
  4. Each removed concave will be replaced with two half-width KX7 concaves.
    1. Install front ramp on the front-position concave (See Figure 9).

      FIGURE 9

    2. Remove hanger pins prior to installation (See Figure 10).

      FIGURE 10

  5. Install concaves in the configuration matching the KX7 kit that was ordered, typically MaxThreshTM concaves are in the front position(s) followed by MaxRoundTM concaves (See Figure 11).
    (Note: configurations may vary depending on region, crop conditions, and dealer recommendations.)

    FIGURE 11

    1. Follow concave installation procedures in your combine owner’s manual. (Note: two KX7 concaves will need to be installed for each single OEM concave removed.)
    2. Install hanger pins once concaves are in place (See Figure 12).

      FIGURE 12

    3. Loosely assemble hardware to mounting brackets. These will be tightened after step 6.
  6. Once all KX7 concaves are installed in the combine, use the holes along the radius of the frames and the hardware provided to loosely assemble the concave frames together (hardware provided in zip-top bag).
    1. Assemble concave one to two, three to four, and five to six (See Figure 13).

      FIGURE 13

    2. Concave assemblies should now mimic OEM concave configuration (See Figure 14).

      FIGURE 14

  7. Tighten all mounting hardware (Steps 5 and 6) and torque to 53 N•m (39 ft-lb).
  8. Once KX7 concaves are installed, level and zero your concaves following the procedures in your combine owner’s manual.
  9. Reference your owner’s manual to confirm that you have completed all steps after concave installation.

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