GREAT PLAINS 7000 Series Leitfaden

FIELD ADJUSTMENT GUIDES

Document #TLUS100C-0001B

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Document # TLUS100C-0001B

Tillage

7000 Series Disk Harrow

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:

48474

Models Affected: 7323DH, 7326DH, 7329DH, 7330DH, 7333DH, 7336DH

Date: May 31, 2017

General Information

Document #TLUS100C-0001B 2 of 4

Side To Side Leveling:

Note: Ensure the machine is leveled front to rear prior to

leveling the machine side to side.

1) With the machine completely unfold and lowered 1-2”

off of the ground and the hydraulic fore & aft set to “C”,

adjust the wing wheels so that the gangs are the same

distance off of the ground as the center blades.

Hydraulic Hose Hookup:

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.

Hydraulic Hose Hookup

Color Function

Black Lift (2 Hoses)

Green Fold (2 Hoses)

Red Hydraulic Leveling (2 Hoses)

Yellow Accessory (2 Hoses)

Tire Inflation Chart:

Ensure all tires are inflated to the proper operating pres-

sure per the table to the right. Note: Proper inflation is

important to ensure safe transport and level operation of

the Disk Harrow.

Tire Pressure

Position Size Pressure

Wing 12.5Lx15 12-Ply 52 PSI

Transport 340/60 R16.5 73 PSI

Transport 380/55 R16.5 73 PSI

Hydr. Gauge Wheel 11Lx15 12-Ply 52 PSI

Manual Gauge

Wheel 9.5x15 8-Ply 44 PSI

Front To Rear Leveling:

Note: Prior to leveling the machine front to rear, raise

the machine completely up and hold the hydraulic valve

open for 30 seconds to be certain the hydraulic system

is re-phased.

1) On a smooth level surface, completely unfold and

lower the machine until the gangs are 1-2” off of the

ground.

2) Adjust the hydraulic fore & aft so that the gauge

reads “C”.

3) Once the gauge reads “C” adjust the hitch turnbuckle

until the front and rear gangs are equal distances off the

ground.

49391

49395

Document #TLUS100C-0001B

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49393

Hydraulic Single Point Depth Stop Adjustment:

The hydraulic depth stop will ensure a consistent depth

every time the machine is lowered.

1) Prior to setting the single point depth stop, ensure

that the machine is completely level front to back and

side to side.

2) Lower the machine to the desired working depth and

pull forward. Once satisfied with the working depth,

adjust the depth stop handle to make contact with the

depth stop valve. Note: If a change of depth is desired,

1 full turn on the depth stop handle either in or out will

change the depth of the machine approximately 1/4” up

or down.

49394

Gauge Wheel Adjustment:

Note: The gauge wheels are desired to run 1/2” above

the ground when operating in the field.

1) With the machine lowered into the desired operating

position, remove the wire retaining pin and adjust the

gauge wheel crank either up or down until the gauge

wheels are 1/2” above the ground. Note: The gauge

wheels are designed to correspond to the single point

depth stop. If the depth stop is increased one full revolu-

tion then the gauge wheels need to be increased one

full revolution, ect.

48746

Spike Drag Adjustment:

Spike drags come factory set with 5 chain links hanging

from the bottom drag arm slot. The cleaner the ground,

the shorter the pull chains may be pulled up. Note:

Ensure that the spike drag is never pulling off of the

hang chains. If so, shorten the chains.

Document #TLUS100C-0001B 4 of 4

48656

Heavy Coil Tine Adjustment:

1) To change the angle of the coil tine, rotate the locking

pin and move the adjustment handle either forward or

backwards. Moving the adjustment handle towards the

rear of the machine makes the drag more aggressive

while moving the handle towards the front of the

machine will allow residue to flow easier.

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