OMH235512: 9670 STS and 9770 STS Combines (9670 STS and 9770 STS 730101- ), Block File: OUO6075_0000D62_19

Chaffer/Sieve Elements-Remove and Install

causym CAUTION: Shut OFF engine, set parking brake and remove key to help prevent accidental starting and personal injury.

NOTE: It is not necessary to remove straw chopper (if equipped) to remove chaffer/sieve elements. Chopper must be in fully raised position.

Sieve removal is similar to chaffer removal.

1. Raise spreader (if equipped) and remove pins (B).

2. Remove spreader disks (A).

A-Disk
B-Quick-Lock Pin

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3. Without Optional Automatic Combine Adjust: Loosen gauge adjustment screw (A) in chaffer/sieve element (B).

A-Adjustment Screw
B-Chaffer/Sieve Element

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4. Without Optional Automatic Combine Adjust: Slide chaffer/sieve opening gauge (A) inside chaffer/sieve element.

A-Chaffer Opening Gauge

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5. With Optional Automatic Combine Adjust: Disconnect electrical harness (A).

A-Chaffer/Sieve Harness

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NOTE: Chaffer motor does not have to be removed.

6. With Optional Automatic Combine Adjust: Remove cap screws (A) and cover to access chaffer motor.

A-Cap Screws

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7. With Optional Automatic Combine Adjust: Remove cap screws (A) and shield.

A-Cap Screws

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8. Remove chaffer/sieve retaining bolts (A) and springs from both sides.

9. Slide chaffer/sieve element through rear of machine.

10. Inspect grain seals on chaffer/sieve element and repair or replace as needed.

11. Install chaffer/sieve element through rear of machine and tighten retaining bolts on both sides to specification.

Specification

Chaffer/Sieve Retaining Bolts -Torque

100 N·m

(74 lb-ft)

A-Retaining Bolts

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12. With Optional Automatic Combine Adjust: Install shield and retain with cap screws (A).

A-Cap Screws

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13. With Optional Automatic Combine Adjust: Install chaffer motor cover and retain with cap screws (A).

A-Cap Screws

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14. With Optional Automatic Combine Adjust: Connect electrical harness (A) and calibrate chaffer/sieve (see Calibration Procedures section.

A-Chaffer/Sieve Harness

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15. Without Optional Automatic Combine Adjust: Slide chaffer/sieve opening gauge (A) through sidesheet.

16. Without Optional Automatic Combine Adjust: Calibrate opening gauge to proper dimension.

a. Crank chaffer/sieve to full open position.

A-Chaffer/Sieve Opening Gauge

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b. Close slowly until average opening measures approximately 8 mm (5/16 in.) with clearance gauge (A).

c. Slide chaffer/sieve opening gauge (B) to read 8 mm at sidesheet (C).

A-Clearance Gauge
B-Chaffer/Sieve Opening Gauge
C-Sidesheet

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d. Tighten gauge adjustment screw (A) in chaffer/sieve element (B).

17. Install spreader disks and lower straw spreader or chopper.

A-Adjustment Screw
B-Chaffer/Sieve Element

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