GREAT PLAINS BD7600 Leitfaden

FIELD ADJUSTMENT GUIDE

Document #DRUS400C-0012A

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Document # DRUS400C-0012A

Drill

BD7600 Box Drill

Models Affected: BD7600-26, BD7600HD-26, BD7600-30, BD7600HD-30, BD7600-40, BD7600HD-40

Proper servicing and adjustment is key to the long life of all farm equipment. With careful and sys-

tematic inspection of equipment, costly maintenance, time and repair can be avoided. The follow-

ing information will assist with recommended servicing and adjustments:

49627

Date: March 24, 2020

General Information

Document #DRUS400C-0012A 2 of 12

General Information:

1) Visually inspect the drill for any signs of loose hard-

ware or hydraulic fittings.

2) Inspect and lubricate all chains with chain lube.

4) Inspect all chains daily for proper adjustment:

5) Lubricate the clutch cams daily with grease along

with spraying the hex coupler with chain lube. Remove

all buildup of grease and residue on clutches once a

year.

6) Check the tire pressure on all tires, as incorrect tire

pressure will affect seeding rate and levelness of the

drill.

Model Tire Size Pressure

BD7600(HD)-26 Transport 320/70R15

9.5LX15-8 PLY

52 PSI

44 PSI

BD7600(HD)-30 Transport 305/70R16.5

Gauge Wheel 10.0x15

73 PSI

BD7600(HD)-40 Transport 380/55R16.5

Gauge Wheel 340/6R16.5

73 PSI

Hitch Height Adjustment: Adjust the drill hitch to

match the tractor draw bar height.

1) With the drill lowered to field position, extend the

jack so the lowest hitch hole is 18 inches above ground

level (A).

2) Install the drill hitch onto the tongue to match the

tractor draw bar height. The hitch can be turned over

for six different hitch heights. Always have two bolts in

two holes of both the tongue and hitch.

Hydraulic Hookup: Refer to the table to the right for

proper hydraulic hose identification: Color Hydraulic Function

Red Opener Lift Cylinders

Blue Transport Lift Cylinders/Jack

Gray Fold Cylinders

Green Marker Cylinders (Optional)

Yellow Hydraulic Drive

(B) - 32.0 in (81.3 cm)

(D) - 26.0 in (66.0 cm)

(E) - 21.5 in (24.6 cm)

(F) - 18.5 in (47.0 cm)

(G) - 15.5 in (39.4 cm)

Document #DRUS400C-0012A

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Wing Box Alignment:

1) Place blocks ahead of the wing gauge wheels.

2) Pull forward against the blocks to rock the wing

frames back.

3) Pull forward until the stop bolts (1) are firmly

against the folding arms.

4) Run a string line across the back of the drill toward

the outer ends of the wings. Make sure the string is

parallel to the center box and both measurements (2)

are equal.

5) For proper alignment, the outside ends (3) of the

wing boxes should be about 1 to 1-1/4 inch ahead of

the inside ends (4).

6) To adjust the box alignment, shorten or lengthen

the stop bolts to change the contact point with the

tool bars. Loosen the jam nut and adjust the stop

bolts in or out until the outside ends of the boxes are

1 to 1-1/4 inch ahead of the inside ends.

7) Tighten the jam nut.

49629

*BD7600(HD)-26*

*BD7600(HD)-30 & BD7600(HD)-40*

Document #DRUS400C-0012A 4 of 12

How To Set Ground Drive High & Low Range

Sprockets:

Note: Set each sprocket range according to the seed

rate manual.

1) Push down on the idler handle.

2) Remove the chain.

3) Route the chain, on the correct range, around the

idlers and sprockets as shown to the right.

4) Set each drill box with the same range.

How To Set Hydraulic Drive High & Low Range

Sprockets:

Note: Set each sprocket range according to the seed

rate manual.

1) Push down on the idler handle.

2) Remove the chain.

3) Route the chain, on the correct range, around the

idlers and sprockets as shown to the right.

4) Set each drill box with the same range.

49633

How To Lock Up & Unlock Openers:

Note: Openers must be locked up for transport or for

working under the drill. Opener handles can be moved

with openers up or down, but lock indicators only

engage and disengage after the openers are raised

completely. There are two lock handles on each drill

section, six handles total.

To Lock Up Openers:

1) Position the lock handles (1) in ROAD position (2).

2) Completely raise the openers until the spring

loaded locks, latch into place.

Document #DRUS400C-0012A

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49634

To Unlock Openers:

1) Position the opener lock handles (1) in FIELD posi-

tion (3).

2) Raise the openers completely to release the spring

loaded locks.

3) Lower the openers.

49635

How To Set Opener Hydraulic Down Pressure:

Note: The following information assumes the tractor is

either a closed center and/or load sensing system.

Open center tractors can not be ran in continuous

flow (see Open Center Hydraulic Instructions on pg.

6).

1) Turn the locking disk (1) counterclockwise to

enable adjustment.

2) Initially close the bypass valve for no oil flow by

turning the adjustment knob (2) completely clockwise.

Note: Turn the adjustment knob counterclockwise to

increase flow and clockwise to decrease flow. Turn it

fully clockwise to stop all bypass flow.

3) With the tractor at half throttle, adjust the flow-con-

trol valve on the tractor so the openers raise and

lower at a reasonable speed. Keep the tractor at half

throttle for the remaining steps. Note: The faster the

opener raise and lower, the greater potential for oil

heating, premature wear, or tractor damage.

4) Engage the tractor hydraulics and lower the open-

ers. Lock the hydraulic lever on the tractor for continu-

ous operation.

5) Release the locking disks (3) on the down-pressure

valves.

6) Turn the adjustment knobs (4) on the down-pres-

sure valves so the gauges are at 1800 psi (2100 psi

for heavy duty drills).

7) While watching the gauges on the drill, slowly

adjust the knob on the bypass valve counterclock-

wise. Adjust the bypass valve just until the needles on

the gauges begin to move down. Note: At the same

time, for proper opener operation, the bypass valve

must be set at least 300 psi above the opener down

pressure setting with the tractor at half throttle.

8) Lock the bypass valve at this setting.

9) Readjust the down-pressure valves on the drill to

the desired opener down pressure.

Document #DRUS400C-0012A 6 of 12

Opener Adjustments:

Openers provide the best results when the opener

body is parallel with the ground.

1) If the openers are too high in the front, increase

hydraulic pressure, and/or lengthen the opener

springs. Check the opener frame pivot in use at high

pressures.

49636

Opener Center Hydraulic (Non-Active Hydraulic

System) Instructions:

1) Lower the opener frames and lock the tractor

hydraulic lever forward temporarily while adjusting

opener down-pressure.

2) Release the lock disk (1). Set the down-pressure

with the adjustment knob (2) while watching the pres-

sure gauge until the gauge shows the desired pres-

sure. Turn clockwise to increase pressure and

counterclockwise to decrease pressure.

3) When the pressure is set, lock the knob with the

locking disk.

4) After opener down-pressure is set, return the trac-

tor hydraulic lever to neutral. This locks in the

selected pressure and opener frames remain fixed in

this position.

Note: Open center tractors and tractors with fixed-dis-

placement pumps are not designed to provide a con-

tinuous supply of pressurized oil to remote valve.

Locking the hydraulic lever forward on these tractors

can cause overheating of hydraulic oil and tractor

damage.

During Field Operation:

1) Each time the openers are lowered, hold the tractor

remote hydraulic lever forward for a few seconds to

recharge the circuit, then return it to neutral position.

The tractor and drill should be on level ground when

returning lever to neutral.

2) When approaching rough terrain where you need

active hydraulics to maintain even opener penetra-

tion, move the tractor hydraulic lever forward momen-

tarily. When you return to level ground move the lever

to neutral. Note: Do not activate the tractor hydraulic

lever for more than 20 seconds at any given time.

49637

49638

2) If the openers are too low in the front or are bulldoz-

ing, as shown to the right, decrease the hydraulic

pressure and/or shorten the opener springs.

Document #DRUS400C-0012A

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49639

Opener Spring Down Pressure Adjustment:

For planting in tire tracks and for no-till conditions,

increase spring pressure on individual openers or on

all openers. Adjust the spring together with the opener

frame down pressure and opener height to keep the

top of the opener parallel to the ground.

1) Loosen the jam nut (1) at the lower end of the

opener spring.

2) Tighten the flange nut (2) against the spring ten-

sion. Each 1/4 inch adjustment adds about 17 pounds

of force at the opener disk.

3) Adjust adjusting, lock the flange nut in place with

the jam nut.

The reference points for spring length (3) are the cen-

ter of the upper/front clevis pin (4) and the top edge of

the lower/rear spring stop (5)

The factor preset length is recommended for conven-

tional till and min till conditions. Shorten the length for

no-till conditions.

00 Series 00HD Series

Factory Length 13-5/16 in 12-9/16 in

Minimum Length 12-5/16 in 12-1/4 in

Opener Depth Adjustment:

Set opener seeding depth (1) by adjusting the press

wheel height.

1) Raise the openers slightly.

2) Lift and slide the T-handle (2) on each opener.

Adjust all press wheels to the same height. Each

adjustment of the T-handle changes the seeding

depth by approximately 1/4 inch.

Move the T-handle forward (A) for more shallow seed-

ing.

Move the T-handle backwards (B) for deeper seeding.

Note: If the press wheels are lifting off the ground,

increase hydraulic down pressure. If press wheels are

digging into the ground, decrease hydraulic down

pressure.

Opener Disk Blade Adjustments:

Opener disk angle and stagger is not adjustable, but

disk-to-disk spacing is, and may need to attention as

disk wear.

With ideal spacing the blades are in contact for about

1 inch. Insert two pieces of paper between the blades.

The gap (A) must be 1/2 to 1 1/2 inch.

If the gap is significantly larger or smaller, or if there is

no contact at all, adjust by moving one or more spacer

washers.

Document #DRUS400C-0012A 8 of 12

49642

How To Adjust Blade Spacing (Contact):

1) Raise and lock up the drill with the transport lock.

2) Remove the bolt (1) securing the opener disk on

one side. Note: The bolt on the left side is a left-

handed bolt and the bolt on the right side is a stan-

dard right-hand threaded bolt.

3) Carefully remove the blade (2). Note how many

spacers (3) are outside the flange dust cover (4) and

inside the disk. Do not lose the hub components and

spacers.

4) To reduce the spacing between the disks, move

one spacer from the inside to the outside of the flange

dust cover. To increase the spacing, move one spacer

from the outside to the inside of the flange dust cover.

5) Reassemble and check disk contact.

Knock Down Tine Pitch Adjustment:

To avoid rapid wear, do not allow the knock down bars

or tines to contact the ground during operation.

1) Loosen the nuts (2)

2) Adjust the rear elevation of each knock down

assembly so it is as close as possible to level with the

opener frame.

3) After both sides are adjusted, tighten the nuts to

torque.

49642

Knock Down Bar/Disk Gap Adjustment:

The gap should be about 0.01 inch.

1) Loosen the bolts (1).

2) Adjust the position of the tine (2) so the knock-

down bar (3) almost contacts the opener disk for the

full length of the bar.

3) Tighten the nuts to torque.

4) Rotate the opener disk a full turn or more to make

sure that contact is avoided.

Note: Adjust the scraper on the knock down tine so

that the gap is about 0.01 inch.

49644

Document #DRUS400C-0012A

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49633

How To Fold Drill:

Applies to BD7600(HD)-30 & BD7600(HD)-40

1) Par the tractor and drill on level ground with

enough clearance to fold the drill. Put the tractor in

park.

2) Fold markers, if installed.

3) Position all six opener locks handles (1) in ROAD

position (2) and completely raise the openers. Note:

The opener lock handles are spring loaded and can

be moved to ROAD position with openers up or down,

but the locks only engage when the openers are com-

pletely raised.

4) Make sure the transport lift cylinders and tongue

cylinder are completely retracted (drill is lowered,

transport hook is lowered).

5) Slowly retract the fold cylinders. Completely fold

wing frames until both wing gauge wheels contact the

tongue tube.

How To Raise the Drill For Transport:

1) Extend the transport lift cylinders.

2) Leave the circuit extended until the mainframe lift is

complete, the transport hooks (1) have engaged, the

wing ends are lifted off the ground, and the tongue cyl-

inder (2) is fully extended.

49645

3) Position the transport lift handle (1) down in ROAD

position and lock the transport lock (2) in the latch (3).

The drill is now ready for transport.

49646

Document #DRUS400C-0012A 10 of 12

How To Lower Drill For Unfolding:

Note The drill must be lowered before unfolding.

1) Park the tractor and drill on level ground and put

the tractor in park. Make sure there is enough clear-

ance to unfold the drill.

2) Confirm that the selector valve is set for transport.

3) Slowly extend the lift cylinders. Set the hydraulic

lever to off. Move the center transport lift handle up to

FIELD position to release the transport lock.

4) Slowly lower the drill. Keep the hydraulic engaged

until the tongue cylinder and two lift cylinders are

completely retracted. Set the hydraulic circuit to neu-

tral.

How To Unfold The Drill Once Lowered:

1) Verify that the opener frames are still raised and

locked up (handles in ROAD position).

2) Slowly unfold the wing frames by completely

extending the fold cylinders.

3) If operating in the field, place all six opener lock

handles in FIELD position.

4) Completely raise the openers to allow the opener

locks to disengage.

How To Fold Drill:

The following applies to BD7600(HD)-26

Transport lift is on a dedicated hydraulic circuit, and is

used before folding. It raises and lowers inde-

pendently of the opener frames. The transport lift cir-

cuit also includes two cylinders on the wing arms

which lift the wings when folding.

1) Park the tractor and drill on level ground with

enough clearance to fold the drill. Put the tractor in

park.

2) Fold markers if installed. Return selector valve han-

dle to FOLD position.

3) Position all opener lock handles (1) in ROAD posi-

tion (2) and completely raise openers.Note: The

opener lock handles are spring loaded and can be

moved to ROAD position with openers up or down, but

the locks only engage when the openers are com-

pletely raised.

4) Extend the transport lift cylinders.

49633

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