Adjusting Concave

Remove the inspection hole covers (A) on both sides of the combine.

ZX019094

Inspection Hole Covers, R.H. Side

ZX019097

Inspection Hole Covers, L.H. Side

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Open Concave

Remove locking pin (A) to allow you to turn the cylinder easily.

Open the concave fully until the clutch on the actuator motor makes a ratcheting sound.

ZX019095

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Loosen Concave Stop

Loosen cap screws (A) securing concave stop.

H43931

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Close Concave

Rotate cylinder until rasp bar with washer appears in the front inspection hole (A).

Close the concave until the concave crossbar appears in the inspection hole.

H43885

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Insert Gauge in Front R.H Inspection Hole

Insert gauge (4.7 mm 0.19 in. scale) into front inspection hole.

Slowly close the concave until the rasp bar touches the gauge and a ratcheting sound is heard.

H48966

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Insert Gauge in Front L.H. Inspection Hole

Go to the left-hand side of the combine and insert gauge into the front inspection hole between the rasp bar and the concave; it should fit firmly.

If adjustment is necessary, loosen bolt (A) on eyebolt and adjust nuts (B) to obtain correct clearance.

Tighten bolt (A) to specification.

Specification

Bolt (A) -Torque 285 N·m (200 lb-ft)

Remove gauge from the left-hand side of the concave.

H43887
H48967

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Remove Gauge from Front R.H Inspection Hole

Open concave slightly to remove gauge from right-hand side of the concave.

With the gauges removed, open the concave completely.

H48966

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Insert Gauge in Rear R.H. Inspection Hole

Rotate cylinder clockwise until rasp bar with washer is visible in the rear inspection hole.

Insert gauge into the rear right-hand inspection hole.

Slowly close concave until the rasp bar is resting against the gauge and a ratcheting sound is heard. If a ratcheting sound is heard before the concave touches the cylinder, adjustment is necessary.

Loosen bolt (A) on eyebolt and adjust nuts (B).

Tighten bolt (A) to specification.

Specification

Bolt (A) -Torque 285 N·m (200 lb-ft)

ZX019098
ZX019099

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Insert Gauge in Rear L.H Inspection Hole

Go to the left-hand side of the combine and insert gauge into left-hand side rear inspection hole between the rasp bar and the concave; it should fit firmly.

If adjustment is needed, loosen retaining bolt (A) and adjust nuts (B) to obtain correct clearance.

Tighten retaining bolt (A) to specification.

Specification

Retaining Bolt (A) -Torque 285 N·m (200 lb-ft)

H43890
H48970

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Remove Gauge from Rear R.H Inspection Hole

Go to right-hand side and open the concave slightly to remove gauge.

Open the concave completely.

ZX019098

OUZXMAG,00007AA -19-08SEP00-10/12

Insert Gauge In Front R.H Inspection Hole

Rotate the cylinder counterclockwise until the rasp bar with the washer is visible in the front inspection hole (A).

Slowly close the concave until the concave crossbar appears in the inspection hole.

Insert the gauge between the rasp bar and the concave.

Close the concave until the rasp bar is against the gauge and a ratcheting sound is heard.

H43885

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Secure Concave Stop

Reposition concave stop and retighten cap screws (A) securing stop.

Reset Control Unit

The concave calibration procedure must be performed before initial use or when the concave sensor is replaced, see "Calibration Procedures" Section.

H43931

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