Great-plains UT3030 Coulter Assembly Instructions User Manual download pdf (Page 8)

Section 2: Hydraulics Great Plains Mfg., Inc.

Series I UT3030-UT5052 Ultra Till 786-026M 3/11/2004

UT3030 Ultra Till Hydraulic Down Pressure Preparation and Setup

Note: This setup procedure is for tractors with closed-center or pressure compensated flow

hydraulic systems. For open-center hydraulic systems contact your dealer for instructions.

1. Adjust the bypass/pressure reducing

valve by turning knob (1), Figure 1,

clockwise all the way in and then backing

out 1 full turn.

2. On tractor, adjust flow-control valve to low

side of flow rate. NOTE: The faster the

flow of oil through the system the greater

potential for oil heating, premature wear

or tractor damage.

3. Lock the fold hydraulic lever for

continuous downward oil flow.

4. Adjust bypass/pressure reducing valve

knob (2) on implement so the pressure

gauge reads 1200 psi. Never exceed

1400 psi.

5. While watching pressure gauge, slowly open

valve knob (1) until gauge reads 1100 psi.

Pressure might rise and then fall off as knob

is opened. If pressure exceeds 1400 psi

during this step, the tractor flow is too high,

reduce tractor flow. Lock valve knob (1) at

1100 psi.

6. Finally adjust valve (2) to the desired wing

down pressure setting of 400 to 700 psi.

Never exceed 900 psi.

7. In field operation, Lock the fold

hydraulic lever for continuous

downward oil flow. If wings are

running too high, increase pressure

setting, knob (2), to level machine. If

center is too high, decrease pressure

setting with knob (2) on valve.

Figure 1

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Great-plains UT3030 Coulter Assembly Instructions User Manual Page 8