Great Plains 2SNT30 User Manual
Owner’s / Parts M a n u a l
1993 2-Section No-Till Drill
24’ & 30’ Flat Fold Marker
Manufacturing, Inc.
P.O. Box 218
Assaria, Kansas 67416
Effective 11/4/94
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Your Great Plains 2-Section No-Till Flat Fold Marker is designed to give you many years of dependable service. This manual has been prepared to instruct you in the safe and efficient operation of
this machine. Read and study it thoroughly. Follow all instructions and service procedures carefully.
The parts on your 2-Section No-Till Flat Fold Marker have been specially designed and should only
be replaced with genuine Great Plains parts. Therefore; should your drill require replacements parts,
purchase them from your Great Plains Dealer.
The Great Plains 2-Section No-Till Flat Fold Marker is an option made available to fit the Great
Plains 2 Section Folding No-Till Drill manufactured after February of 1993.
The marker features as standard equipment a notched 16" disk with depth band, mounted on
("Timken") tapered roller bearings. The disk assembly can be angled to vary the aggressiveness of
the cut, and can be mounted to throw dirt in or out. The marker is available in two lengths, capable
of marking to the tractor's center line on either a 24' or 30' drill. The marker body is split into 4 sections with 3 hinges that allow the marker to be "flat folded" back upon itself for low profile storage.
Four different assemblies have been created to allow your dealer to order the marker needed to fit
your application and your drill. The part numbers and descriptions for these assemblies are as follows:
113-383A 24' NO-TILL LH FLAT FOLD MARKER (single marker left hand mount only)
113-384A 24' NO-TILL DUAL FLAT FOLD MARKER (dual markers left and right)
113-385A 30' NO-TILL LH FLAT FOLD MARKER (single marker left hand mount only)
113-386A 30' NO-TILL DUAL FLAT FOLD MARKER (dual markers left and right)
INTRODUCTION
1-0
Each "A" bundle contains all the marker parts, hardware, hydraulic hoses, hydraulic fittings and
valves that you will need to install the marker on your 2 Section No-Till Drill.
The following signal symbol and words should be clearly understood! When seen in this manual or
on your equipment, this symbol and words will alert you to the seriousness of a situation. They
should not be ignored or taken lightly.
!
The SAFETY ALERT SYMBOL indicates that there is a potential hazard to personal safety
involved and extra safety precautions must be taken. When you see this symbol, be alert and carefully read the message that follows it. In addition to design and configuration of equipment; hazard
control and accident prevention are dependent upon the awareness, concern, prudence and proper
training of personnel involved in the operation, transport, maintenance and storage of equipment.
DANGER: Indicates an imminently hazardous situation which, if not avoided, will result in death
or serious injury This signal word is limited to the most extreme situations.
WARNING: Indicates a potentially hazardous situation which, if not avoided, could result in
death or serious injury.
CAUTION: Indicates a potentially hazardous situation which, if not avoided, may result in minor
or moderate injury. It may also be used to alert against unsafe practices.
Thank you for buying a Great Plains 2-Section No-Till Flat Fold Marker.
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TABLE OF CONTENTS
Introduction ----------------------------------------- 1-0
Table Of Contents -------------------------------- 1-1
Nut & Bolt Torquing Chart ---------------------- 1-1
Safety Rules ---------------------------------------- 1-2
Marker Installation Instructions ---------------- 1-3
Single Marker Hydraulics------------------------ 1-8
Dual Marker Hydraulics -------------------------1-10
Marker Adjustments------------------------------1-12
Marker Maintenance & Lubrication-----------1-13
Marker Transportation---------------------------1-13
Bleeding Of The Hydraulics--------------------1-14
Trouble Shooting----------------------------------1-15
Warranty -------------------------------------------1-16
Parts Book Table Of Contents-----------------1-18
NUT & BOLT TORQUING CHART
This chart is based on torque requirements in foot pounds for grade 5, coarse threaded bolts.
BOLT MINIMUM MAXIMUM BOLT MINIMUM MAXIMUM
DIAMETER TORQUE TORQUE DIAMETER TORQUE TORQUE
1/4” 9 11 3/4” 270 324
5/16” 17 20 7/8” 400 480
3/8” 35 42 1" 580 696
7/16” 54 64 1 1/8” 800 880
1/2” 80 96 1 1/4” 1120 1240
9/16” 110 132 1 3/8” 1460 1680
5/8” 150 180 1 1/2” 1940 2200
NOTE: Torque requirements listed above do not apply to self-locking nuts. For self-locking nuts increase the torque
requirements listed above by 15%.
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! !
SAFETY RULES
The safe operation of machinery is a big concern to farmers and manufacturers. You Markers have
been designed with many built-in safety features. However, no one should operate the Drill or Markers before carefully reading this Owner’s Manual.
1. NEVER permit anyone near machinery while in operation.
2. Excessive marker folding speed can cause marker damage.
3. NEVER allow anyone to be near the drill when cycling the markers.
4. Reduce speed of the tractor when transporting over uneven or rough terrain. Avoid all chuck
holes and washboard areas in roads.
5. Reduce speed of the tractor when transporting over hills or steep slopes.
6. DO NOT lubricate, adjust or repair the drill while it is in operation.
7. When in transport, use accessory lights and devices for adequate warning to operators of other
vehicles and use safety hitch chain. Comply with all Federal, State and Local laws when traveling on public roads.
1-2
8. Use "Slow Moving Vehicle" emblem for warning vehicles approaching from the rear.
9. DO NOT permit smoking, sparks, or an open flame where combustible lubricants or liquids are
being used.
10.
11. DO NOT allow anyone to operate the Drill who has not been properly trained in its safe opera-
!
CAUTION! Escaping fluid under pressure can have sufficient force to penetrate
the skin. Check all hydraulic lines and hoses BEFORE applying pressure. Fluid escaping from
a very small hole can be almost invisible. Use paper or cardboard, NOT BODY PARTS, to
check for suspected leaks. If injured, seek medical assistance from a doctor that is familiar with
this type of injury. Foreign fluids in the tissue must be surgically removed within a few hours
or gangrene will result.
tion.
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INSTALLATION INSTRUCTIONS: 1993 2SNT 24’ & 2SNT 30’ MARKERS
PREPARATION
1. Pull the drill to an area large enough to allow the marker to be assembled unfolded. Unfold the drill. If your drill is to
be equipped with dual markers, allow clearance to complete the assembly of both left and right markers. Both sides
should be assembled before charging the hydraulic cylinders and folding the markers for the first time.
Lower the drill, park and shut off the tractor.
GENERAL ASSEMBLY NOTES
2. a. Several of the marker weldments are pre-assembled and banded together for shipment. Unpack the shipment
and group the assemblies according to right or left hand.
b. The following notes and illustrations show each major weldment assembled separately. This method is shown in
case the person doing the assembly does not have access to a forklift, and needs to assemble the parts by hand. Sev
eral of the steps are eliminated if a forklift is used to lift the larger preassembled groups into place.
c. The following notes and illustrations detail the assembly of a left hand marker. If a single hydraulic marker was
ordered for your drill, it must be installed on the left hand side. If you are installing dual markers, follow the steps below
for the left hand side, and repeat them to install the right.
-
3. Referring to Fig. 1, install the left hand marker mount (# 1) on the left box (# 2). The mount is fastened to the drill
using two u-bolts (# 3), lock washers (# 4) and nuts (# 5). Install the first section of the marker (# 6) on the mount (# 1)
by pushing the pivot shaft (# 7) through the pivot holes on the mount and the first section. Use the bolt (# 8) and lock nut
(# 9) to retain the shaft in the mount.
Mount the left hand breakaway hinge (# 10) onto the first section (# 6) by pushing the pivot shaft (# 11) through the pivot
holes in each part. Use the bolt (# 8) and lock nut (# 9) to retain the shaft.
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INSTALLATION INSTRUCTIONS: 1993 2SNT 24’ & 2SNT 30’ MARKERS (CON’T.)
4. Referring to Fig. 2, pin the base end of the hydraulic cylinder (# 12) to the marker mount (# 1) using the pin and retainer (#13 & 14). Remove the plastic shipping plugs from the cylinder ports, and pull the rod end of the cylinder out to
its maximum length. Pin the rod end of the cylinder by working the cylinder pin (# 15) through one slotted ear on the
breakaway hinge (# 10), through the cylinder's rod end clevis, and out the other ear on the hinge. The rod end pin is
retained by placing the flat washers (# 16) on the outside of the slotted ears, and cotter pins (# 17) through the holes in
the pin.
Again referring to Fig. 2, install the chain bar weldment (# 18) on the first section (# 6). The chain bar should pivot freely
around the bolt (#19) which is fastened with lock nut (# 20). Directly below the pivot bolt for the chain bar weldment (#
18) is a single hole in which the full threaded adjustment bolt (# 21) is installed. To install, first thread one lock nut (# 22)
up the entire threaded length of the bolt. Next, push the bolt with nut through the hole in the mast of the first section (#
6), and complete the assembly by threading a second lock nut (# 22) up the entire remaining length of the full threaded
bolt.
Information on the adjustment of this bolt, which is designed to take the slack out of the chain when the marker is in the
folded position, can be found in the "Adjustments" section on
adjustment bolt extend as little as possible which will prevent the parts from being damaged the first time the marker is
folded.
Thread a utility clevis (# 23) through one end of the chain (# 24). Pin this clevis to the chain bar weldment (# 18) using
the pin and cotter (# 25 & 26) that came with the utility clevis. Do not fully bend the cotter pin at this time, the chain will
be adjusted later before the marker is folded for the first time. Chain length adjustments are done at the end of the chain
towards the center of the drill. Thread a second utility clevis (# 23) through the last link at the opposite end of the chain
(# 24). Pin this clevis to the chamfered end of the chain bar (# 27) using the pin and cotter (# 25 & 26) that came with
the utility clevis.
page 12. For now, it is important that the head of the
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Fig. 2
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INSTALLATION INSTRUCTIONS: 1993 2SNT 24’ & 2SNT 30’ MARKERS (CON’T.)
5. Referring to Fig. 3, attach the 2nd section maker weldment(# 28) to the breakaway hinge (# 10) by passing the pivot
pin (# 29)through the pivot hole in the hinge and weldment. Retain the pivot pin (# 29) with the bolt and lock nut (# 8 &
9). Complete this joint by passing the special GRADE 2 breakaway bolt(# 30)through the holes in the hinge and 2nd
section. Install the lock washer (# 31) and nut (# 32) on this bolt.
NOTE: The breakaway bolt (# 30) is a 7/16"-14 x 2" long - grade 2 (G.P. # 802-353C) It is identified as a grade 2 by
having no marks on the head. If it breaks, it must be replaced by an equivalent grade 2 bolt to prevent marker damage.
11101
Fig. 3
6. Referring to Fig. 4, attach the 3rd section (# 33) to the 2nd section (# 28) by using the pivot pin (# 29). Retain the
pivot pin with the bolt (# 8) and lock nut (# 9).
Note: The next few steps are made easier if the marker's outer sections are lifted off the ground by a support approximately 12" to 18" tall placed under the outer end of the 3rd section (# 33).
Pull the loose end of the chain and chain bar (# 27) out and fasten the chain bar to the ears on the 3rd section (# 33) by
using the bolt (# 34) flat washers (# 35) and lock nut (# 36). Do not over tighten this pivot and cause the ears to bend
in. The chain bar must pivot freely around the bolt.
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Fig. 4
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INSTALLATION INSTRUCTIONS: 1993 2SNT 24’ & 2SNT 30’ MARKERS (CON’T.)
7. Referring to Fig. 5, slide the fourth section tube (# 37) inside the 3rd section (# 33). The holes in the 4th section must
be to the outside of the drill and need to be on the top and bottom side as shown. Thread the jam nuts (# 38) on the
square headed set screws (# 39). Thread the set screws into the nuts welded to the outer end of the 3rd section (# 33).
Tighten the set screws and jam nuts.
8. Again referring to Fig. 5, slide the blade and spindle assembly (# 40) over the 4th section tube (# 37).Pass the bolt
(# 41) through a flat washer (# 42), through the hole in the spindle weldment, and through the holes in the 4th section
tubing. Complete the joint by fastening a flat washer (# 42), a lock washer (# 43) and a nut (# 44) onto the bolt. In a
similar manner, install the second bolt through the adjustment slot, next the first bolt. Tighten these two nuts.
1-6
Fig. 5
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INSTALLATION INSTRUCTIONS: 1993 2SNT 24’ & 2SNT 30’ MARKERS (CON’T.)
9. The transport carrier arm (# 45) will bolt directly to the pull bar lugs on the 30’ box frame Fig. 6. Hold the carrier in
place by passing the two u-bolts (# 47) over the carrier tube, and through the holes in pull bar ears.Tentatively, tighten
the u-bolts with the lock washers (# 48) and nuts (#49) so that the top of the carrier is approximately29 3/8" above the
top surface of the box's 6" x 8" frame tube. On the 24’ drill
tween the cylinder lug and the pull bar mount by means of the mounting bracket (#52). It is held in place with the two
1/2" x 6" x 9 1/4" u-bolts (#53), flat washer, lock washer, & nut (#54, #55, #56). Fasten the carrier to the mount by passing
the two u-bolts (# 47) over the carrier tube, and through the holes in the pull bar ears.Tentatively, tighten the u-bolts with
the lock washers (# 48) and nuts (#49) so that the top of the carrier is approximately 29 3/8" above the top surface of
the box's 6" x 8" frame tube.
Mount the transport saddle (# 50) on the top of the carrier arm (# 45) using the u-bolts (# 51), lock washers (# 48) and
nuts (# 49). On 24' drills
outside of the drill as shown.
Fig. 7 it is important that the saddle (# 50) be positioned so that the offset in the saddle is to the
Fig. 7, the transport carrier is mounted to the box frame be-
11201
Transport Carrier Mounting 30’ Drill
Fig. 6
NOTE:
Dual Marker Installations: To complete the installation, repeat steps 3 through steps 9 on the opposite marker.
All Installations: After all parts are in place, go back over the entire installation and tighten every bolt and u-bolt.
Refer to the torque chart in the front of your drill's owners manual. U-bolts can be torqued to grade 5 bolt values.
When finished, read and follow the MARKER HYDRAULIC SYSTEM INSTALLATION section of this manual.
!
CAUTION! BEFORE FOLDING THE MARKER(S) FOR THE FIRST TIME, READ THE
Transport Carrier Mounting 24’ Drill
Fig. 7
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SECTION ON ADJUSTMENTS IN THIS MANUAL.
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MARKER HYDRAULIC SYSTEM INSTALLATION
INSTALLING: 24 or 30' SINGLE MARKER HYDRAULICS
GENERAL NOTE: JIC fittings do not require high torque. JIC and O-ring fittings do not require sealant. To avoid cracking
fittings or castings from overtightening, DO NOT use plastic sealant tape.
REFER TO THE PICTORIAL HYDRAULIC SCHEMATIC Fig. 8 WHEN INSTALLING SINGLE MARKER HYDRAULICS.
1. Attach the 90˚ swivel elbow (#4) to the base and rod end of the marker cylinder (#3). Thread the close nipple (#15)
in the swivel of the elbow (#4), and thread the needle valve (#16) on the close nipple.
2. Uncoil and attach hose (#6) to the needle valve (#16) on the rod end of the marker cylinder (#3). Uncoil and attach
hose (#5) to the swivel elbow (#4) attached to the base end of the marker cylinder (#3). Route these two hoses through
the frame member cut-outs and hose clamps. Parallel to the hoses feeding the outer gage wheel cylinder as shown in
Fig. 9 on page 1-9. Place the hoses in the clamps later, after the free ends are plumbed.
3. Remove the three bolts (#18) from the top of the tongue truss and install the valve mount plate (#17) under them.
Referring back to schematic Fig. 8, Bolt the selector valve (#7) to the valve mount. The valve is held in place with bolts
(#9), flat washers (#10), lock washers (#11) and nuts (#12).
4. Install the four elbow fittings (#13) in the side ports of the selector valve (#7). Install the two straight fittings (#14) in
the two top ports of the selector valve (#7).
5. Locate the two long hoses (#1) coming from the tractor, going to the fold cylinders. Break the first hose at the “T”
between the rod end of the fold cylinders, the second at the flow divider. Take these same two hoses and install them
on the top two selector valve fittings (#14).
6. The two hoses just removed from the fold cylinders are replaced by two shorter hoses (#2). Run one from the “T”
between the rod end of the fold cylinders to the elbow (#13) on the side of the selector valve. Run the other from the fold
cylinder's base end flow divider to the adjacent elbow (#13).
7. The last hoses to connect should be the two coming from the marker cylinder. Connect these to the two remaining
elbows (#13) on the selector valve (#7) as shown.
Single Marker Hydraulics
Fig. 8
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HOSE CLAMPING AND ROUTING
8. Refer to the hose routing illustration Fig. 9, to fine tune the hose placement. Make a generous loop in both hoses
near the box's flex hinge. This loop should be large enough to allow the outer box wing to flex without the hoses pulling
tight. Maintain the loops by clamping the hoses in the center hole of the existing hose clamps, using the split rubber
sleeves as bushings between the clamps and the marker hose. Use the cable ties supplied with the kit to hold the hoses
away from any pinch point along their path.
Hydraulic Hose Routing
Fig. 9
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