GREAT PLAINS Short Disk SD3300 현장 조정 매뉴얼 - 페이지 3

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Hydraulic Leveling Fore and Aft:

Fore/Aft leveling in the field should be done with the

hydraulic level (if equipped), otherwise use the hitch

turnbuckle for adjustment.

1) With the hitch turnbuckle set, the fore/aft can be

adjusted hydraulically to compensate for differing

field conditions.

2) If a mound is left in the center of the machines

pass, move the fore/aft gauge towards "A" until the

mound goes away.

3) If a valley is left in the center of the machines pass,

move the fore/aft gauge towards "G" until the valley

goes away.

Note: If the fore/aft hydraulic cylinder limits out before

the mound or valley goes away, the hitch turnbuckle

is not adjusted correctly and should be properly

adjusted.

Wing Lift Cylinder Eyebolt Adjustment:

If hydraulic down pressure and optional wing gauge

wheels are not installed, wing lift cylinder eyebolts

are the main method of assuring level wings.

The factory preset for wing lift cylinder eyebolts is

4 5/8 inches.

1) With the implement fully raised, loosen the rear

jam nut (3).

2) Use the front nut (4) to drive the eyebolt either for-

ward or backwards to the required setting.

3) Tighten the rear jam nut.

Wing Hydraulic Down Pressure:

Wings may be operated with active hydraulic down-

pressure, which transfers mainframe weight to the

wings, or the wings may be operated in Float.

Note: The down-pressure system is not compatible

with Open Center tractor hydraulics. Place wings in

Float when running an Open Center system.

1) Engage the hydraulic lever for continuous flow.

Ensure that the tractor throttle is above idle to obtain

an accurate reading.

2) From the cab, adjust the tractor hydraulic flow so

that the needle on the bypass gauge (5) is in the

green zone (1000-1500 PSI).

3) At the valve block, release the locking disc and

adjust the knob (6) to set the initial down pressure

(7). Usually set between 200-300 PSI.

exceed 800 PSI.

4) If the wings begin to run high during field opera-

tion, increase the down pressure. If the center begins

to run high, decrease the down pressure.

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Note: Never

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