GREAT PLAINS 3P1006NT Leitfaden

FIELDADJUSTMENTGUIDE

Document #DRUS100C-0003A

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Document # DRUS100C-0003A

Drills

3-Point Eight & Ten Foot No-Till Drills

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:

48873

Models Affected:3P806NT, 3P1006NT

Date: August 4, 2015

General Information

Document #DRUS100C-0003A 2 of 4

Adjusting Coulter Height:

Raising the gauge wheel spindle provides deeper

coulter depth while lowering the gauge wheel provides

shallower depth. Note: Do not lower the coulters to aid

in penetrating hard soil. Instead, increase coulter

down-force or add optional weight to the drill.

1) Determine the desired coulter depth. With new

coulter blades, the axle holes provide the following

depths:

2) Raise the drill until the spindle can be adjusted any

distance.

3) Loosen the chain idlers.

4) Remove the wheel bolts and move the spindle to the

desired hole. Re-install the wheel bolts.

5) Re-engage the chains idlers and check the overall

depth.

48874

Hole No.

(from top)

Coulter Depth

Inches mm

1 3 1/2 in. 89 mm

2 2 7/8 in. 73 mm

3 2 3/8 in. 60 mm

4 1 7/8 in. 48 mm

5 1 3/8 in. 35 mm

6 7/8 in. 22 mm

7 3/8 in. 10 mm

8 1/4 in. 6 mm

Individual Coulter Height Adjustment:

Individual coulter depth may be adjusted by raising and

lowering the spring bar.

1) Determine the new desired coulter depth, and/or the

difference between that and the current depth.

2) Raise the drill until the coulters are just touching the

ground. The press wheels are supporting some weight

at this point.

3) Measure the current spring bar length, from the bot-

tom of the tool bar to the bottom of the spring bar. For

reference, the factory setting is roughly 12 1/2 inches

(31.8 mm).

4) Determine the new bar length required and loosen

the clamp bolts (1).

5) Use a mallet to adjust the bar height and re-tighten

the clamp bolts (1) once the desired height is achieved.

48875

Document #DRUS100C-0003A

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48646

Coulter Down-Force Adjustment:

Coulter springs are factory preset at 10 in. (25.4 cm),

giving coulters an initial operating force of 400 pounds

before the spring compresses. This setting is ade-

quate for many difficult no-till conditions.

To adjust the coulter spring:

1) Completely raise the drill and determine the new

desired spring length.

2) Measure the current length of the spring(s) to be

changed. If the springs already measure shorter than

9 3/4 in. or longer than 10 1/4 in., do not further adjust

them.

3) Loosen the jam nut (2).

4) Rotate the adjuster nut (3) until the spring is at the

desired length. Re-tighten the jam nut.

Note: If all springs are continuously in compression,

the coulters can lift the drill off the ground (at the

ground drive wheel), resulting in low seeding rates

and uneven seed depth. If high forces are required,

frame weights are probably required.

Spring Length Force At Blade

10 1/2 in. (26.7 cm) 175 lbs. (79 kg)

10 1/4 in. (26.0 cm) 300 lbs. (136 kg)

10 in. (25.4 cm) 400 lbs. (181 kg)

9 3/4 in. (24.8 cm) 525 lbs. (238 kg)

Opener Down Pressure Adjustment:

The “W” clips located on the opener spring rods

should be in the lowest hole. This is the correct loca-

tion in all conditions. The “W” clips can be raised on

openers behind wheel tracks only if penetration is not

adequate.

48645

Document #DRUS100C-0003A 4 of 4

48642

T-Handle Adjustment:

The depth of each opener is controlled by the height of

the press wheel. Varying the height of the press wheel

changes the seeding depth of the opener. Moving the

“T” handle to the front of the opener shallows the

depth; moving the “T” handle towards the rear of the

opener increase the depth. For a starting point, place

the “T” handle towards the center.

48509

Feed Cup Adjustment:

Each feed cup is equipped with a four-position adjust-

ment handle:

A) The highest position is for wheat and other small

grains

B) The second position is for soybeans and other large

grains

C) The third position is used if the seeds are cracking

in the second position

D) The bottom position is for clean out and will drain all

seed

Note: Do not open the feed cup handle to the bottom

position with seed in the box unless complete clean out

is desired. Changing this handle will change the seed-

ing rate. When storing after drilling season, it is best to

place the handle in the bottom position to prevent dam-

age from mice.

Selecting Drive Type:

The gearbox is designed to give a variety of drive

speeds for different types of seed and rates. It is a lin-

ear shaft pattern design with constant mesh gearing

and is totally sealed to keep any dirt out. No lubrication

is required unless service is needed.

1) To set the gearbox, simply move the selector handle

until the desired drive type appears in the window on

the handle:

48877

Main Seed Box Drive Type Ratios

Drive Type 2 is 2.06 Times Faster Than 1

Drive Type 3 is 3.08 Times Faster Than 1

Drive Type 4 is 5.03 Times Faster Than 1

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