Great-plains EWNT7 1237Q-1522Q Operator Manual User Manual download pdf (Page 24)

EWNT7 and EWNT10 End Wheel No Till Drill 150-082M 4/17/2001

Great Plains Mfg., Inc.

Section 4 Adjustments

Planting Depth Adjustments

A no-till coulter is mounted independently and directly

ahead of each opener on the drill. Each coulter cuts

through heavy trash and/or cuts a groove in the ﬁrm soil

often encountered in no-till seeding conditions. The

coulters are mounted directly to the drill box frame. Con-

sequently, the cutting depth of all coulters on the drill

change as the drill is raised and lowered. The cutting

depth of the coulters is controlled by an adjustable hy-

draulic depth stop on the master cylinder. Refer to "Hy-

draulic Depth Control" for information on how to make

this depth adjustment.) Those coulters which run direct-

ly in drill and tractor tire tracks may be individually low-

ered if desired. See "Individual Coulter Adjustment".

Coulter Hydraulic Depth Control

Refer to Figure 4-8:

The master lift cylinder on your drill is equipped with a

hydraulic depth control stop, Figure 4-8. This allows for

a variable adjustment from zero to maximum stroke

which controls the depth of your coulters. In order to ad-

just the stroke of the cylinder, retract the cylinder until the

coulters are penetrating at the desired depth required.

Next, loosen the bolt on the depth control actuator plate

and slide it up the cylinder until it stops against the

plunger of the control valve on the head of the cylinder.

You will now need to extend your cylinder slightly and

move the depth control actuator plate up to compensate

for the control valve plunger length.

Down Pressure Requirements

If more weight is required for your soil conditions, it

should be added to the weight bracket of the drill (option-

al equipment). Be sure the weights are equal at each

end. Refer to chart below for additional weights.

10115

Master Cylinder With Depth Control Stop

Figure 4-8

7’ Drill

Row

Spacing

Drill

Weight

Empty

Drill

Only

Drill With

*Weight

Bracket

Great Plains Weight

Bracket & Weight

Required

200# 600#

Pounds Per Coulter

7" 3800# 345# 375# 393# 421#

7 1/2" & 8" 3650# 365# 398# 418# N/A

10" 3350# 418# N/A N/A N/A

10’ Drill

Row

Spacing

Drill

Weight

Empty

Drill

Only

Drill With

*Weight

Bracket

Great Plains Weight Bracket & Weight Required

200# 600# 1000# 1200# 1400#

Pounds Per Coulter

7" 4500# 281# 302# 314# 340# 365# 377# 390#

7 1/2" 4350# 290# 312# 326# 352# 379# 392# N/A

8" 4200# 300# 324# 338# 367# 395# N/A N/A

10" 3750# 340# 371# 390# N/A N/A N/A N/A

*7’ Weight Bracket Part No. 150-010A

**10’ Weight Bracket Part No. 150-011A

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