GREAT PLAINS Short Disk SD2600 Guida

FIELDADJUSTMENTGUIDE

Document #TLUS120C-0001A

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Document # TLUS120C-0001A

Tillage

Short Disk

Proper servicing and adjustment is key to the long life of all farm equipment. With careful and systematic

inspection of equipment, costly maintenance, time and repair can be avoided. The following information

will assist with recommended servicing and adjustments:

48687

Models Affected:SD2600, SD3000, SD3300

Date: October 6, 2016

General Information

Document #TLUS120C-0001A 2 of 5

Hydraulic Hose Hookup

Ensure that the tractor horsepower meets the minimum

requirement for the implement being pulled. This is

important so that the implement can work as efficiently

as possible.

1) Connect the Short Disk to the tractor using a locking

style pin. Ensure that the safety lights and chain are

hooked up.

Great Plains hydraulic hoses have colored coded han-

dle grips to help hook up hoses to the tractor remotes.

Hoses with the same color use the same remote.

2) Use the following table to assist with hooking up the

hydraulic hoses.

Hydraulic Hose Hookup

Color Function

Black Lift (2 hoses)

Green Fold (2 hoses)

Red Machine Level (2 hoses)

Blue Roller (optional)

Tire Inflation Chart:

1) Inflate all tires using the following chart:

Tire Inflation Chart

Wheel Tire Size Inflation

Wing Gauge Wheel (3000) 12.5L X 15 12-Ply RI 52 PSI

Transport (2600)

Transport (3000)

Wing (2600)

380/55 R 16.5 73 PSI

48681

48476

Hitch Turnbuckle Adjustment:

For front to rear leveling, either extend or shorten the

tongue turnbuckle. During field operation, if a mound

appears in the center of the machine, the hitch turn-

buckle needs shortened to raise the rear gangs. If a val-

ley appears in the center of the machine, the hitch

turnbuckle needs to be lengthened to raise the front

gang.

Note: If equipped with hydraulic leveling, initially set the

fore/aft gauge to “D” before adjusting the hitch.

1) Loosen the jam nut (1) with the provided turnbuckle

wrench located on the backside of the hitch.

2) Adjust the turnbuckle at either adjustment nuts (2)

until the machine is level front to back.

3) Re-tighten the jam nut.

48682

Document #TLUS120C-0001A

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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.

48683

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.

45/8”

48684

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. Note: Never

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.

48685

Document #TLUS120C-0001A 4 of 5

(Old) Disc Scraper Adjustment:

Prior to first use, and periodically thereafter, inspect all

disc scrapers for proper gap and adjust as needed.

Reverse scraper blades when the specific adjustment

is no longer possible. Replace the scrapers when

either side can no longer be adjusted to the proper

gap.

1) Adjust the scraper blades by loosening the two car-

riage bolts (8). Slide and rotate the scrapers and re-

tighten the bolts when finished. Note: If the specified

gap is not set, the blade will plug.

3/8 inch

(9.5 mm)

gap min.

1/8 inch

(3.2 mm)

gap min.

48680

Cast Roller Adjustment (Optional):

The roller attachment is designed to size clods and

consolidate the soil profile. It can be hydraulically

adjusted with a reference gauge on the left wing.

1) Set the blue hydraulic circuit to Float and take note

of the roller reference gauge reading.

2) While making a tillage pass, set the blue hydraulic

circuit to neutral to lock the roller in position.

3) Moving the gauge toward “E” reduces down pres-

sure while moving the gauge toward “A” increases

pressure.

Note: The roller is capable of lifting the rear gang out of

the soil and disturbing the fore/aft setting. When

increasing roller pressure, ensure that the machine

does not raise as the pressure increases.

4) If wheel tracks or power hopping occurs, increase

the roller pressure.

5) Note the reference gauge setting for future use.

48686

49290

(New) Disc Scraper Adjustment:

Prior to first use, and periodically thereafter, inspect all

disc scrapers for proper gap and adjust as needed.

Replace the scrapers when they can no longer be

properly adjusted.

1) Adjust the scraper blades by loosening the two bolts

(9). Rotate the scraper until 1/16” to 1/8” gap between

the scraper and blade is achieved and re-tighten the

bolts when finished. Note: This measurement is essen-

tial for proper trash flow.

Document #TLUS120C-0001A

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36566

Rolling Basket Adjustment (Optional):

The seedbed conditioner basket is designed to firm/

consolidate the soil and is not recommended for work-

ing in wet conditions.

1) Springs (10) are factory set at:

Model # Spring Length

SD2600 14.88 inches (378 mm)

SD3000 14.75 inches (375 mm)

SD3300 14.56 inches (370 mm)

2) To adjust the springs, loosen the jam nut (11).

3) Using a wrench, adjust the adjustment nut (12) until

the desired spring length is achieved. Note: The

spring rate is 160 pounds per inch of adjustment. Do

not set the spring length to less than 13 inches to

avoid damage to the rolling baskets.

4) Weight can also be removed from the baskets by

moving the upper linkage pin (13) to a higher hole.

Note: The pins must be restored to the bottom holes

prior to folding.

Single Spike Tine Adjustment (Optional):

The single spike tine is included with one of the rolling

basket options.

There are two adjustments that affect tine height and

angle.

1) Lift chains (14):

Lengthening the chain (fewer slack links at slot) is

more aggressive. Shortening the chain is less aggres-

sive. Note: Start with five links hanging from the drag

arm slots.

2) Angle levers (15):

Moving the lever up is less aggressive, and allows

more residue to flow through the tines. Moving the

lever down is more aggressive.

36566

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