Great Plains 3S-3000 User Manual
Great Plains Mfg., Inc.
General Information 1
2- and 3-Section Folding Drill
Open Center Hydraulic Kit
Used with:
• 2S-2600, 2S-2600HD
• 3S-3000, 3S-3000HD
• 3S-4000, 3S-4000HD
General Information
These instructions explain how to install an Open Center
Hydraulic Kit, required for operating any of these drills
with tractors having open-center hydraulics, or fixed-displacement hydraulic pumps.
These instructions apply to an installation of
Kit Kit Description
194-143A
Note: Do not install this kit on a Point Row-equipped
drill. These two options use the same mounting
locations, cannot be co-located, and this kit does
not upgrade Point Row hydraulics to open center
operation.
Each kit converts an entire drill.
Tools Required
• current Operator and Parts manuals (see page 21)
• basic hand tools,
• liquid (not tape) pipe thread sealant,
• fresh hydraulic fluid, and;
• suitable tractor or hydraulic source for charging system and making initial adjustments.
Table of Contents
Installation steps vary for 2- and 3-section drills, and vary
for older vs. newer 2-section drills.
Before You Start ...........................................................2
Pre-Assembly Preparation............................................2
3S-3000 and 3S-4000 Installation ................................3
2S-2600 DD1161- Installation ......................................9
2S-2600HD and 2S-2600 DD1162+ Installation ........15
Closeout .....................................................................21
Setup ..........................................................................21
Appendix ....................................................................21
Torque Values ......................................................21
Current Manuals ..................................................21
New Parts ............................................................22
Existing Parts Affected.........................................23
Abbreviations .......................................................23
2600 3000 4000 OPEN-CTR HYDKIT
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!
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Figure 1: Parts
Kit (Black) / Existing (Gray)
Notations and Conventions
“Left” and “Right” are facing in the
direction of machine travel. An orientation rose in the line art illustrations
shows the directions of Up, Back, Left,
Down, Front and Right.
Call-Outs
1 9
to
11 24
to
51 65
to
Single-digit callouts identify components in
the currently referenced Figure or Figures.
These numbers may be reused for different
items from page to page.
Two-digit callouts in the range 11 to 24 reference new parts from the new parts lists
beginning on page 22.
Two-digit callouts in the range 51 to 65 reference affected existing parts from the table on
page 23. The descriptions match those in
your Parts Manual. The narrative and table
indicate any re-use of the parts.
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©Copyright 2000, 2005, 2008 Printed 09/05/2012 194-149M
2 Open Center Hydraulic Kit
Before You Start
Review the instruction for your drill, with the following
objectives at each step:
• Documentation: Update your Operator and Parts
manuals to current editions. See page 21.
• Inventory: examine any called-for items and make
sure all parts are present.
• Comprehension: make sure you understand
where each part or assembly is installed, and
what tools are required for the task.
Pre-Assembly Preparation
Work Location
1. Move the drill to a location with:
• adequate illumination,
• suitable surface beneath (hydraulic fluid spills a
re likely during disconnection of existing hoses),
and;
• access to tractor or hydraulic power.
Great Plains Mfg., Inc.
!
WARNING
Negative tongue weight hazard. Consult Operator manual
before any unfolding or lift operations. Folding drills can have
significant negative tongue weight when unfolded and raised.
The tongue can fly up during opener lift, if using stationary
hydraulic power to operate drill. Use any parking stands provided.
Prepare Drill
2. Unfold the drill.
3. Install any parking stands provided with drill.
4. Lower the openers.
5. Block the tires.
Refer to Figure 2
6. Release the pressure in the pressure control system by unlocking control disks and turning adjustment knobs fully counter-clockwise.
7. Slightly raise the openers, until pressure gauges
read zero.
8. Set the tractor or hydraulic source circuits to Float.
Do not disconnect until circuits are at 0 PSI.
9. Install the parking jack if unhitching.
10. Shut off tractor or hydraulic source.
!
CAUTION
Slipping hazard - hydraulic fluid spill is likely during disconnection of existing system and during bleeding of new system.
Clean up spills. Move carefully near removed or loosened fittings.
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Figure 2
Closed Center Controls
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Great Plains Mfg., Inc.
3S-3000 and 3S-4000 Installation
Step 11 through step 47 are for 3S-3000, 3S-3000HD,
3S-4000 and 3S-4000HD drills only. For 2S-2600 drills,
installation instructions begin on page 9 (s/n DD1161-) or
page 15 (2S2600HD or 2S-2600 s/n DD1162+).
3S Control Valve Disassembly
!
WARNING
High pressure fluid hazard. Pressurized fluid may still be
present. Escaping fluid under pressure can penetrate the skin,
causing serious injury. Wear protective gloves and safety
glasses or goggles when working with hydraulic systems.
Crack fitting slowly. Use a piece of paper or cardboard, NOT
BODY PARTS, to check for suspected leaks. If an accident
occurs, seek immediate medical assistance from a physician
familiar with this type of injury.
Refer to Figure 3
11. At each pressure control valve , remove and
save:
51
810-300C PRESSURE GAUGE 3000 PSI
These gauges are re-installed at step 23.
12. At the top rear Port G of each pressure control valve
52
, remove:
63
811-677C AD 9/16MORB 1/4FNPT
These two adaptors are not re-used.
13. Select two new:
24
811-675C PL 9/16MORB HEX HEAD
Install these plugs in the top rear valve holes previously occupied by the gauge adaptor. Tighten to
9/16ORB specification (see page 21). Do not use
pipe thread sealant on these, or any ORB fittings.
14. At the rear lower Port R of each valve , disconnect the hose to the cylinder base ends:
65
811-774C HH3/8R1 072 9/16FJIC
These hoses are re-connected to new fittings at
step 22. Note which hose is which (by where it is
routed to), so that it can be reconnected to the correct (same) valve assembly after the new valves
and fittings are installed.
15. Remove two:
56
811-170C AD 9/16MORB 9/16MJIC
These adaptors are not re-used.
52
52
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P
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3S-3000 and 3S-4000 Installation 3
51
1200
psi
1800
600
2400
0
3000
24
51
65
1200
psi
1800
G
600
0
R
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2400
3000
G
P
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R
52
T
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Figure 3
Disassemble 3S Valves
ERS
NERS
S
S
24
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3S Check Valve Installation
Refer to Figure 4
16. Select two new:
23
811-636C AD 9/16MORB STRAIGHT UNION
Make sure the jam nut is fully threaded onto the
adaptor.
17. At the lower rear valve Port R of each pressure control valve , screw in the union end with the
integral hex nut (NOT the end with the jam nut).
Tighten to 9/16ORB specification.
18. Select two new:
16
810-343C VALVE PO CHECK 2:1 W/9/16FORB
Note: These valves are stamped 85050146, and if
shaken gently, do not rattle.
(The third valve, assembled at step 25, is a shuttle
valve, and does rattle.)
19. Screw Port 2 of each check valve onto the other
end of the adaptor installed at step 17. Turn until
finger tight, then back off until the side of the valve
with the hex head cartridge is Up and Port 3 is
down. Tighten the jam nut to 9/16ORB specification.
20. Select two new:
20
811-439C TE 9/16MORB 9/16MJIC 9/16MJIC
This is the symmetrical MJIC/MORB tee. There are
four of these in the kit.
21. Screw the MORB port of the tee into the rear
Port 1 of each check valve . Screw until finger
tight, then back off until the JIC ports are vertical.
Tighten the ORB jam nut to 9/16ORB specification.
22. Locate the disconnected hoses:
65
811-774C HH3/8R1 072 9/16FJIC
At the lower port of each new tee , reconnect the
hose to the cylinder base ends that was discon-
nected at step 14. Do not use pipe thread sealant
on these or any JIC fittings. Tighten to 9/16JIC
specification (see page 21).
23. Select two new NPT swivel adaptors:
22
811-582C AD 9/16FJIC 1/4FNPT
and the saved gauges:
51
810-300C PRESSURE GAUGE 3000 PSI
Apply liquid pipe thread sealant to the gauge MNPT
threads and screw the adaptor onto the gauge.
Tighten to 1/4NPT torque specification (see
page 21).
24. At each valve, screw the JIC end of the gauge
assembly onto the top port of the new tee .
Orient the gauge to face forward, and tighten the
JIC connection to JIC torque specification.
52 23
16
23
20
16
20
65
22
22 20
16
P
T
ROD END, CENTER OPENERS
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G
R
52
R
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1200
psi
1800
600
2400
0
3000
22
20
1
2
3
23
BASE END, CENTER OPENERS
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Install 3S Check Valves
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G
P
R
T
52
ROD END, WING OPENERS
Figure 4
Great Plains Mfg., Inc.
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1200
psi
1800
600
2400
0
3000
1
2
3
23
BASE END, WING OPENERS
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20
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3S Shuttle Valve Assembly
Refer to Figure 5
25. Select one new:
17
810-344C VALVE SHUTTLE 9/16FORB PORTS
Note: This valve is stamped
shuttle rattles if the valve shaken gently. When
mounted on the drill, Port 1 will be to drill Right.
26. Select one new:
18
811-064C TE 9/16MJIC 9/16MJIC 9/16MORB
This is the asymmetrical MJIC/MORB tee. There is
only one of these in the kit.
27. Screw the ORB end of the tee into Port 2 of the
17
valve . Orient the center JIC port of the tee down,
and tighten the ORB jam nut to ORB torque specification.
28. Select two new:
20
811-439C TE 9/16MORB 9/16MJIC 9/16MJIC
This is the symmetrical MJIC/MORB tee.
29. Screw the center ORB ports of these tees into
Ports 1 and 3 of the valve . Orient the end JIC
ports to point Front and Back, and tighten the ORB
jam nut to ORB torque specification.
30. Select two new:
19
811-193C TE 9/16FJIC 9/16MJIC 9/16MJIC
Screw the center FJIC ports of these tees onto
the Front-facing ports of the just installed tees .
Orient the MJIC ports of tees to point Left and
Right, and torque to JIC specification. Set valve
aside until step 37.
85005468, and the internal
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20
17
19
20
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3S-3000 and 3S-4000 Installation 5
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3
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Figure 5
Assemble 3S Shuttle Valve
58
4
60
20
18
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3S Shuttle Bulkhead Disassembly
Refer to Figure 6
31. Mark the hose connected to the center port of
the top tee “Lower”.
32. Mark the hose connected to the center port of
the bottom tee “Raise”.
33. At their FJIC fittings, disconnect all six hoses ( ,
59 4
, ) at the two bulkhead tees:
60
811-312C TE 9/16MJIC
Note: It is not necessary to identify the forward four
hoses . They are identified by length and source
when reconnected.
34. Remove the two tees . They are not re-used.
58
59
58
4
60
60
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4
4
Figure 6
Remove Old 3S Bulkhead Tees
4
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3S Shuttle Valve Installation
Refer to Figure 7
35. Select two sets of:
12
802-551C HHCS 1/4-20X2 1/4 GR5
15
804-075C WASHER FLAT 1/4 USS PLT
14
804-006C WASHER LOCK SPRING 1/4 PLT
13
803-006C NUT HEX 1/4-20 PLT
36. Place a flat washer on each bolt , and insert
the bolts through the top holes of the bulkhead .
Place a lock washer and nut on the end of
15 12
4
14 13
the the threads. Spin the nut on just a few turns.
37. Select the shuttle valve assembled at step 25.
17
With Port 1 to drill Right, place the valve against the
bulkhead between the bolts and under the
washers . Tighten the nuts to torque specifi-
412
15 13
cations.
3S Shuttle Valve Hoses
Step 38 through step 42 re-connect the hoses disconnected at step 31.
Refer to Figure 8 on page 7
38. Identify the two existing 20in or 21in hoses connected to the top Ports P of the pressure control
valves.
Re-connect the other end of these hoses to the left
and right ports of the top swivel tee at the shuttle
17
valve Port 3.
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14
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12
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Figure 7
Install 3S Shuttle Valve
45. Route the JIC end of each hose to the JIC ports of
the tee at the left Port 2 of the shuttle valve .
18 17
46. Tighten all hose connections to torque specifications.
47. Continue at “Closeout” on page 21.
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39. Identify the two existing 18in hoses connected to
62
the bottom Port T tee of the pressure control valves.
Re-connect the other end of these hoses to the lateral ports of the right forward swivel tee at the
shuttle valve Port 1.
40. Identify the tractor circuit hoses and marked
17
58 59
6
at step 31.
41. Connect the “Lower” hose to the rear port of
the top tee at the shuttle valve Port 3.
58 7
17
Note: If the drill is equipped with a filter, this is the hose
connected from the filter.
42. Connect the “Raise” hose to the rear port of
the right side tee at the shuttle valve Port 1. This
59 8
17
port is not visible in the Figure.
43. Select two new:
21
811-531C HH1/4R2 018 9/16FJIC9/16MORB90
44. Connect the 90 degree ORB end of these hoses to
the bottom Port (3) of each check valve .
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Great Plains Mfg., Inc.
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3S-3000 and 3S-4000 Installation 7
7
5
17
8
3
1
2
6
18
21
57
1200
psi
1800
600
2400
0
3000
G
P
1
2
R
T
3
16
BASE END, CENTER OPENERS
ROD END, CENTER OPENERS
21
16
57
P
21
LOWER
58
FILTER
62
TO TRACTOR
RAISE
1200
psi
1800
600
2400
0
3000
3
1
2
G
1
2
R
T
3
59
21
62
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ROD END WING OPENERS
BASE END, WING OPENERS
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Figure 8
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3S Shuttle Valve Hose Routing
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3S-3000 and 3S-4000 Hydraulic Schematic
Great Plains Mfg., Inc.
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Figure 9
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3S Hydraulics
3S Drill Vintages
Drills built in December 2004 and Earlier Drills Built in January 2005 or Later
3S-3000 s/n S1699- s/n S1700+
3S-4000 s/n YY1310- s/n YY1131+
194-149M 09/05/2012
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