Preparing Hydraulic System-John Deere 8000/9000, 8020/9020, and 8030/9030 Series Tractors

1. Check hydraulic oil level. Fill if necessary.

2. WING FOLD/UNFOLD- Press SCV I 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 button can be set to constant . If set to constant , 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 for machines equipped with hydraulic control.


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

N78550

8000/8020 and 9000/9020 Display

N78549

8030/9030 Display

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4. WING-FOLD CONTROL- Press SCV I selector button (A) and turn flow control knob (B) to rabbit position. Flow setting is shown on bar graph display (C).

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

6. FERTILIZER OPENER DOWN PRESSURE CONTROL- Press SCV II selector button (E) and turn flow control knob (B) to rabbit position.

7. Turn time detent knob until display reads from "5" seconds. This can be increased or decreased depending on actual time required to raise and lower High Speed Fertilizer Openers.


A-SCV I Selector Button
B-Flow Control Knob
C-Bar Graph Display
D-Time Detent Knob
E-SCV II Selector Button

N78551

8000/8020 and 9000/9020 Display

N78548

8030/9030 John Deere Tractor Display

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