Preparing Hydraulic System-John Deere 8000/9000/8020/9020 Series Tractors

1. Check hydraulic oil level. Fill if necessary.

2. WING FOLD/UNFOLD-Press SCV II selector button (A) and turn flow control knob (B) to fast (rabbit) position.

3. Turn time detent knob (C) until display reads "19" seconds. If this is not enough time to completely fold/unfold wings, time detent knob (C) may be set to constant. However, tractor hydraulic pump will continue to operate after fold/unfold cylinders have stopped moving. This is normal and not harmful. However, shutting off pump by moving SCV lever to any position after lever has returned to NEUTRAL is recommended.

NOTE: Use constant time setting for wing fold/unfold tractor SCV for machines equipped with hydraulic control.

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A-SCV II Selector Button
B-Flow Control Knob
C-Time Detent Knob

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4. DEPTH CONTROL-Press SCV I selector button (A) and turn flow control knob (B) to rabbit position.

5. Turn time detent knob (C) until display reads "5" seconds. This can be increased or decreased depending on actual time required to lift and lower machine.

6. HYDRAULIC LEVELING OPTION-Press SCV III selector button (D) and turn flow control knob (B) to rabbit position. Turn time detent knob until display reads from 1-5 seconds. This can be increased or decreased depending on actual time required to raise or lower machine.


A-SCV I Selector Button
B-Flow Control Knob
C-Time Detent Knob
D-SCV III Selector Button

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