Great-plains 4000TT Operator Manual User Manual download pdf (Page 46)

Section 2: Hydraulics Table of Contents ► Great Plains Mfg., Inc.

Series I 1000TT - 4000TT Turbo-Till 586-043M 1/25/2008

17’, 22’ & 30’ Hydraulic Down Pressure Preparation and Setup

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

hydraulic systems. Open center hydraulics not supported.

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 300 to 400 psi.

Never exceed 700 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.

8. Caution: Never leave tractor valve

centered when unfolded with machine

in motion. Machine damage may occur

when wings flex up or down (see page

69).

Figure 1

1 2 ... 41 42 43 44 45 46 47 48 49 50 51 ... 75 76

Comments to this Manuals

No comments

Great-plains 4000TT Operator Manual User Manual Page 46

Comments to this Manuals

Related products and manuals for Gardening equipment Great-plains 4000TT Operator Manual