Great Plains 705 User Manual

Great Plains Mfg., Inc.

Installation Instructions

EWNT7 and 705

Harrow Option

Used with:

EWNT7

•

705

•

When you see this symbol, the subsequent instructions and
warnings are serious - follow without exception. Your life and

!

!

the lives of others depend on it!

General Information

These instructions explain how to install the optional spring-tine
harrow. Mounted behind the drill, the harrow evenly distributes
crop residue in no-till conditions.

These instructions apply to:

116-072A EWNT7 & 705 CPH HARROW

Manual Update

Refer to the drill operator’s manual for detailed information on
safely operating, adjusting, troubleshooting and maintaining the
spring-tine harrow. Refer to the parts manual for part identifica­tion.

• EWNT7Operator’s Manual . . . . . . 150-082M-A or 150-082M

• EWNT7 Parts Manual . . . . . . . . . . . . . . . . . . . . . . 150-082P

• 705 Operator’s Manual. . . . . . . . . . . . . . . . . . . . . .150-213M

• 705 Parts Manual. . . . . . . . . . . . . . . . . . . . . . . . . . 150-213P

Before You Start

Page 3 is a detailed listing of parts included in the spring-tine har­row package. Use this list to inventory parts received.

Assembly Instructions

Refer to Figure 1.

1. Lower drill into field position. Place harrow frames (1) be­hind drill.

2. Mount hinge brackets (2) on 4-by-6-inch frame tube (3) on
drill. Position hinge brackets so harrow arms (4) will be close
to the ends of harrow frames. Center hinge brackets be­tween drill openers.

IMPORTANT: Position hinge brackets so drill openers do
not contact harrow arms during drill operation. Exact loca­tion of hinge brackets on frame tube will differ with drill row
spacing.

Attach hinge brackets to frame tube using square u-bolts,
lock washers and nuts as shown.

3. Install harrow arms (4) in hinge brackets so arms pivot on
1/2-inch bolts (5). Secure bolts with nylock nuts.

Harrow Assembly

17868

Figure 1

4. Place harrow frames under channels (6) on harrow arms.
Bolt harrow frames to harrow arms using round u-bolts, lock
washers and nuts. Leave u-bolts loose for harrow adjust­ment.

5. Bolt short support chain (7) to tab on top of harrow arms with
3/8-inch hex bolts, flat washers, lock washers, and hex nuts.
Bolt long support chain (8) to rib under walkboard using 3/8­inch hex bolts, flat washers, lock washers and hex nuts.

6. Connect support chains with chain clevis (9). Adjust chains
so both harrow sections are 152 mm (6 in.) above the
ground.

© Copyright 2000 Printed 4/25/2007

116-109M Rev. A

1

Assembly

Harrow Adjustment

Figure 1 shows one harrow setting that has been successful in
no- and minimum-till conditions. Because of different soil mois­ture, trash levels and trash types, you may need to reposition the
tube frame or tines.

11891

Figure 1

Harrow Tines

To adjust frame tube, refer to Figure 2. Loosen four hex nuts (1)
on u-bolts and rotate frame tube (2).

To adjust tines, loosen four 1/2-inch hex nuts (3) on 1/2-inch u­bolts (4) on support bar (5). Rotate tine tubes (6) so tines (7) are
against stop bushings (8) and are at desired angle. Retighten
hex nuts on u-bolts.

Great Plains Mfg., Inc.

16297

Figure 2

Harrow Adjustment

EWNT7 and 705 Harrow Option 116-109M Rev. A 4/25/2007

2