Great Plains CALIBRATION CRANK User Manual

Great Plains Mfg., Inc.

Update Instructions

706/1006NT, 605NT, 3P605NT,
3P500/3P500V, 3P600

Calibration Crank Kit

Used with:

• 706 End Wheel No-Till

• 1006 End Wheel No-Till

• 605NT

• 3P605NT

• 3P500/3P500V

• 3P600

General Information

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!

These instructions explain how to install the calibration
crank kit. This kit uses a crank handle for calibration.
This allows for calibration in the field.

These instructions apply to:

152-300A 706/1006NT Calibration Kit
152-301A 605NT Calibration Kit
152-303A 3P605NT Calibration Kit
152-305A 3P600 Calibration Kit
152-306A 3P500/3P500V Calibration Kit

Manual Update

Refer to the 706/1006NT, 605NT, 3P605NT, 3P500/
3P500V, or 3P600 operator’s manual and seed rate
book for detailed information on safely operating, ad­justing, troubleshooting and maintaining the calibration
crank. Refer to the parts manual for part identification. A
copy of the updated parts manual is available through

your Great Plains dealer.

150-285M 706/1006NT Operator’s Manual
150-285P 706/1006NT Parts Manual
151-061M 605NT/3P605NT Operator’s Manual
151-061P 605NT/3P605NT Parts Manual
118-794M 3P500/3P500V/3P600 Operator’s Manual
118-794P 3P500/3P500V/3P600 Parts Manual

Before You Start

Page 3 is a detailed listing of parts included in the Calibra­tion Crank Kit update. Use this list to inventory parts
received.

Tools Required

• Basic Hand Tools

• Welder

• DA Grinder

706/1006NT 152-300A Assembly Instructions

Install Calibration Handle Stob

Refer to Figure 1

1. Choose a location on frame of drill to
weld the calibration handle stob.

NOTE: Be sure to choose an out of the way
location as the calibration handle stob
stores the calibration crank when it is not in
use.

2. Grind paint at location on frame where
calibration handle stob is to be welded.

3. Weld calibration handle stob on frame.

4. Repaint portion of frame.

© Copyright 2005 Printed

10/4/2005

23384

Figure 1

Calibration Crank on Storage Stob

152-302M

Calibration Crank Kit

2

Assemble Calibration Crank and
Coupler

Refer to Figure 2

1. Place black vinyl hand grip over calibration
crank handle.

2. Secure calibration crank to storage stob with
retaining pin.

3. Remove washer and roll pin from jackshaft.
Attach coupler to jackshaft and secure with
roll pin. Discard washer.

NOTE: Coupler should remain on jackshaft. Do
not remove coupler even after calibration.

Calibrate

Refer to Figure 3

1. Attach calibration crank to 706/1006NT
gauge wheel jackshaft. Disengage lockout on
the drive wheel. NOTE: If unit has native
grass an extra calibration coupler is needed
on the right hand gauge wheel. This can be
ordered thru your Great Plains Dealer.

Great Plains Mfg., Inc.

23385

Figure 2

Calibration Crank Assembly

2. Rotate calibration crank to see that feed cups
and drive are working properly and are free
from foreign matter.

3. To adjust seeding rate, decide which drive
type (gearbox) setting you need from the
seeding charts. Set the gear box. Rotate cali­bration crank a few turns to confirm gearbox
has been engaged.

4. Record weight of an empty container large
enough to hold seed metered for one acre.

5. Turn calibration crank several times to fill seed
cups with seed. Turn crank until seed falls to
the ground from each cup.

6. Rotate gauge wheel jackshaft using calibra­tion crank about 595 rotations for the 706 and
411 rotations for the 1006. This is equal to
one acre.

7. Check that the three seed cups have plenty of
seed coming into them.

8. Weigh metered seed. Subtract intial weight of
container. Divide by three. Multiply by the
number of openers on your drill to determine
total pounds seeded per acre. If this figure is
different than desired, set your seed rate ad­justment handle accordingly.

NOTE: You may want to repeat the calibration pro­cedure if your results vary greatly from the seed
rate chart.

23386

Figure 3

Calibrate with Calibration Crank

Equations for calibrating seed rate:

measured seed - empty container

= pounds per seed cup

3 (number of seed cups measured)

pounds per seed cup x number of openers = pounds per acre

152-302M 10/4/2005

Great Plains Mfg., Inc.

605NT 152-301A Assembly Instructions

Install Calibration Handle Stob

Refer to Figure 1

1. Choose a location on frame of drill to weld
the calibration handle stob.

NOTE: Be sure to choose an out of the way lo­cation as the calibration handle stob stores the
calibration crank when it is not in use.

2. Grind paint at location on frame where cal­ibration handle stob is to be welded.

3. Weld calibration handle stob on frame.

4. Repaint portion of frame.

Assemble Calibration Crank

1. Place vinyl hand grip over calibration crank
handle.

Replace Jackshaft

Refer to Figure 2

Installation Instructions

Figure 1

Calibration Crank on Storage Stob

3

23387

1. Loosen and remove 5/16-18 x 3/8 set
screws from lock collars on both sides of
left hand side gauge wheel drive assem­bly.

2. Remove lock collar from outside of left
hand side gauge wheel drive assembly.

3. Unclip and remove chain from chain
sprocket and jaw clutch located on inside
of left hand side gauge wheel drive assem­bly.

4. Remove jaw clutch and sprocket assembly
from gauge wheel jackshaft. Remove lock
collar.

5. Holding on to center sprocket, replace
gauge wheel jackshaft with new gauge
wheel jackshaft from kit.

6. Replace jaw clutch and sprocket assembly
on new jackshaft. Reattach chain to
sprocket. Add lock collars and tighten.

jaw clutch and sprocket

assembly

23388

Figure 2

Jackshaft

10/4/2005

152-302M

Calibration Crank Kit

4

Calibrate

Refer to Figure 2

1. To adjust seeding rate, decide which
drive type (gearbox) setting you need
from the seeding charts. Set the gear
box.

2. Record weight of an empty container
large enough to hold seed metered
for one acre.

3. Place several pounds of seed over
three seed cups on an outside end of
drill box. Pull seed tubes off of these
three openers.

4. Attach calibration crank to gauge
wheel jackshaft and secure with re­taining pin. Disengage lockout on the
drive wheel. Rotate crank a few turns
to confirm clutch and gearbox are en­gaged.

Great Plains Mfg., Inc.

-

5. Rotate calibration crank to see that
feed cups and drive are working prop­erly and are free from foreign matter.

6. Turn crank several times to fill seed
cups with seed. Rotate crank until
seed falls to the ground from each
cup.

7. Turn crank 935 rotations. This is equal
to one acre.

8. Check that the three seed cups have
plenty of seed coming into them.

9. Weigh metered seed. Subtract initial
weight of container. Divide by three.
Multiply by the number of openers on
your drill to determine total pounds
seeded per acre. If this figure is differ­ent than desired, set your seed rate
adjustment handle accordingly.

NOTE: You may want to repeat the cali­bration procedure if your results vary
greatly from seed rate chart.

23389

Figure 3

Calibrate

Equations for calibrating seed rate:

measured seed - empty container

= pounds per seed cup

3 (number of seed cups measured)

pounds per seed cup x number of openers = pounds per acre

152-302M 10/4/2005

Great Plains Mfg., Inc.

3P605NT 152-303A Assembly Instructions

Install Calibration Handle Stob

Refer to Figure 1

1. Choose a location on frame of drill to weld the
calibration handle stob.

NOTE: Be sure to choose an out of the way location
as the calibration handle stob stores the calibration
crank when it is not in use.

2. Grind paint at location on frame where calibration
handle stob is to be welded.

3. Weld calibration handle stob on frame.

4. Repaint portion of frame.

Assemble Calibration Crank

1. Place vinyl hand grip over calibration crank han­dle.

Replace Jackshaft

NOTE: If the 3P605NT is not equipped with weight
brackets, replace the jackshaft according to the steps
below.

If the 3P605NT is equipped with weight brackets, re­place the jackshaft according to the steps listed un­der Replace Jackshaft (with Weight Brackets).

Refer to Figure 2

23390

Calibration Crank on Storage Stob

Installation Instructions

Figure 1

5

1. Unscrew acremeter from jackshaft.

2. Detach chain from sprocket on far right end of up­per jackshaft. Remove sprocket from jackshaft.

3. Detach chain from sprock on far left end of upper
jackshaft. Remove sprocket from jackshaft by
pulling jackshaft from drive assembly.

4. Replace upper jackshaft with new jackshaft pro­vided in kit. Reattach all sprockets and chains to
assembly.

Replace Jackshaft (with Weight
Brackets)

Refer to Figure 3

1. Unscrew acremeter from jackshaft.

2. Detach chain from sprocket on far left end of up­per jackshaft. Remove sprocket from jackshaft.

3. Detach chain from sprocket on far right end of up­per jackshaft. Remove sprocket from jackshaft by
pulling jackshaft from drive assembly.

4. Replace upper jackshaft with new jackshaft pro­vided in kit. Reattach all sprockets and chains to
assembly.

23391

Figure 2

Calibration Crank Location without Weight Brackets

23393

Figure 3

Calibration Crank Location with Weight Brackets

10/4/2005

152-302M

Calibration Crank Kit

6

Calibrate

Refer to Figure 4

1. To adjust seeding rate, decide which drive
type (gearbox) setting you need from the
seeding charts. Set the gearbox.

2. Record weight of an empty container large
enough to hold seed metered for one acre.

3. Place several pounds of seed over three seed
cups on an outside end of drill box. Pull seed
tubes off of these three openers.

4. Attach calibration crank to upper jackshaft
and secure with retaining pin. Rotate crank a
few turns to confirm gearbox has engaged.

5. Rotate calibration crank to see that feed cups
and drive are working properly and are free
from foreign matter.

Great Plains Mfg., Inc.

23392

6. Turn crank several times to fill seed cups with
seed. Rotate crank until seed falls to the
ground from each cup.

7. For this shaft location, turn crank 913 rota­tions. This will equal the amount of revolutions
in one acre.

8. Check that the three seed cups have plenty of
seed coming into them.

9. Weigh metered seed. Subtract initial weight of
container. Divide by three. Multiply by the
number of openers on your drill to determine
total pounds seeded per acre. If this figure is
different than desired, set your seed rate ad­justment handle accordingly.

NOTE: You may want to repeat the calibration pro­cedure if your results vary greatly from seed rate
chart.

Figure 4

Calibrate

Equations for calibrating seed rate:

measured seed - empty container

= pounds per seed cup

3 (number of seed cups measured)

pounds per seed cup x number of openers = pounds per acre

152-302M 10/4/2005

Great Plains Mfg., Inc.

Installation Instructions

3P600/3P500/3P500V 152-305A & 152-306A Assembly Instructions

Install Calibration Handle Stob

Refer to Figure 1

1. Choose a location on frame of drill to weld the
calibration handle stob.

NOTE: Be sure to choose an out of the way location
as the calibration handle stob stores the calibration
crank when it is not in use.

2. Grind paint at location on frame where calibration
handle stob is to be welded.

3. Weld calibration handle stob on frame.

4. Repaint portion of frame.

Assemble Calibration Crank

1. Place vinyl hand grip over calibration crank han­dle.

Replace Jackshaft

Refer to Figure 2

1. Unscrew acremeter from jackshaft.

23390

Figure 1

Calibration Crank on Storage Stob

7

2. Detach chain from sprocket on far right end of up­per jackshaft. Remove sprocket from jackshaft.

3. Detach chain from sprock on far left end of upper
jackshaft. Remove sprocket from jackshaft by
pulling jackshaft from drive assembly.

4. Replace upper jackshaft with new jackshaft pro­vided in kit. Reattach all sprockets and chains to
assembly.

23391

Figure 2

Calibration Crank Location (Outside)

23393

10/4/2005

Figure 3

Calibration Crank Location (Inside)

152-302M

Calibration Crank Kit

8

Calibrate

Refer to Figure 4

1. To adjust seeding rate, decide which drive
type (gearbox) setting you need from the
seeding charts. Set the gearbox.

2. Record weight of an empty container large
enough to hold seed metered for one acre.

3. Place several pounds of seed over three seed
cups on an outside end of drill box. Pull seed
tubes off of these three openers.

4. Attach calibration crank to gauge wheel jack­shaft and secure with retaining pin. Disen­gage lockout on the drive wheel. Rotate crank
a few turns to confirm gearbox has engaged.

5. Rotate calibration crank to see that feed cups
and drive are working properly and are free
from foreign matter.

Great Plains Mfg., Inc.

6. Turn crank several times to fill seed cups with
seed. Rotate crank until seed falls to the
ground from each cup.

7. For this shaft location, turn crank 982 rota­tions for the 3P500 and 3P500V. Turn crank
786 rotations for 3P600. This will equal the
amount of revolutions in one acre.

8. Check that the three seed cups have plenty of
seed coming into them.

9. Weigh metered seed. Subtract initial weight of
container. Divide by three. Multiply by the
number of openers on your drill to determine
total pounds seeded per acre. If this figure is
different than desired, set your seed rate ad­justment handle accordingly.

NOTE: You may want to repeat the calibration pro­cedure if your results vary greatly from seed rate
chart.

23394

Figure 4

Calibrate

Equations for calibrating seed rate:

measured seed - empty container

= pounds per seed cup

3 (number of seed cups measured)

pounds per seed cup x number of openers = pounds per acre

152-302M 10/4/2005

Great Plains Mfg., Inc.

152-300A 706/1006NT CALIBRATION KIT

Your kit includes:

Qty. Part No. Part Description

1 148-654D CALIBRATION HANDLE STOB
1 175-235H CALIBRATION CRANK WELDMENT
1 805-065C PIN WIRE RETAINING 1/4 X 1
1 812-335C CALIBRATION CRANK COUPLER
1 817-632C GRIP HANDLE VNYL 1.0 ID X 4.5
1 152-302M MANUAL CALIBRATION CRANK

Installation Instructions

9

152-301A 605NT CALIBRATION KIT

Your kit includes:

Qty. Part No. Part Description

1 148-654D CALIBRATION HANDLE STOB
1 152-556D 605NT GW JACKSHAFT
1 175-235H CALIBRATION CRANK WELDMENT
1 805-065C PIN WIRE RETAINING 1/4 X 1
1 817-632C GRIP HANDLE VNYL 1.0 ID X 4.5
1 152-302M MANUAL CALIBRATION CRANK

152-302M10/4/2005

Calibration Crank Kit

10

152-303A 3P605NT CALIBRATION KIT

Your kit includes:

Qty. Part No. Part Description

1 148-654D CALIBRATION HANDLE STOB
1 152-557D 3P605NT UPPER JACKSHAFT
1 175-235H CALIBRATION CRANK WELDMENT
1 805-065C PIN WIRE RETAINING 1/4 X 1
1 817-632C GRIP HANDLE VNYL 1.0 ID X 4.5
1 152-302M MANUAL CALIBRATION CRANK

Great Plains Mfg., Inc.

152-305A 3P600 CALIBRATION KIT

Your kit includes:

Qty. Part No. Part Description

1 148-654D CALIBRATION HANDLE STOB
1 152-304H 3PT CONV CALIBRATION HANDLE
1 152-558D 3PT CONVENTIONAL JACKSHAFT
1 805-065C PIN WIRE RETAINING 1/4 X 1
1 817-632C GRIP HANDLE VNYL 1.0 ID X 4.5
1 152-302M MANUAL CALIBRATION CRANK

10/4/2005

152-302M

Great Plains Mfg., Inc.

152-306A 3P500/3P500V CALIBRATION KIT

Your kit includes:

Qty. Part No. Part Description

1 148-654D CALIBRATION HANDLE STOB
1 152-558D 3PT CONVENTIONAL JACKSHAFT
1 175-235H CALIBRATION CRANK WELDMENT
1 805-065C PIN WIRE RETAINING 1/4 X 1
1 817-632C GRIP HANDLE VNYL 1.0 ID X 4.5
1 152-302M MANUAL CALIBRATION CRANK

Installation Instructions

11

10/4/2005

152-302M