Adjust Opener Down Force—Tractors With Closed Center Hydraulic Systems

1. IMPORTANT: Adjust opener down-pressure, as required, to keep gauge wheels in firm contact with soil. Do not use more down-pressure than necessary or damage to machine could result.

   NOTE: Active hydraulic down force system requires a tractor with closed-center or pressure/flow compensated hydraulics.

   Refer to Principals of Active Hydraulic Opener Down Force System in this section and determine initial pressure setting.

2. 
   N48139-UN-18DEC01

   
   A43339A-UN-28FEB05

   
   A37910-19-06SEP95

   A - Knob

   B - Pressure Gauge

   C - Wheel

   D - Lever

   Push lever (D) forward until the detent click is felt. Time detent must be set to continuous.

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3. While watching pressure gauge (B), rotate knob (A) to adjust down-pressure to desired setting. Once set, lock knob in position with wheel (C). If gauge needle does not move. (See Troubleshooting section).

4. Make a trial pass in the field.

5. If opener down force is not satisfactory, increase hydraulic pressure for more down-force. If gauge wheel pressure is adequate but depth of penetration is not, see Seed Opener Components and Adjustments and Adjust Gauge Wheel and Seeding Depth in Preparing Machine section).