Great Plains 148-152P User Manual
Great Plains Mfg., Inc.
Installation Instructions
12’ Center Pivot Hitch
Dual Marker Option
Used with:
• 12’ Center Pivot Hitch
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 Dual Marker
Option. The 12’ Center Pivot Hitch Dual Markers are
ground marking disk units that are mounted on both sides
of the drill. These instructions apply to:
113-219A 12’ CPH Dual Marker
Manual Update
Refer to the 12’ Center Pivot Hitch Operator’s Manual for
detailed information on safely operating, adjusting, troubleshooting and maintaining the Dual Marker Option.
Assembly Instructions
Marker Assembly
Refer to Figure 1
NOTE: The RH and LH marker assemblies are identical.
The multiple mounting slots
(6) in the assembly channel
allow for the marker to be attached to the right or left
side of the drill with the
proper mounting brackets
(1).
Use the shear bolt (7) to determine which is the lefthand marker and which is
the right-hand marker. When
markers are installed properly, shear bolt (7) will be oriented towards the front of
the hitch.
Refer to the Parts Manual for part identification.
148-152M 12’, 15’, & 20’ CPH Operator’s Manual
148-152P 12’, 15’, & 20’ CPH Parts Manual
Before You Start
Pages 5 and 6 are a detailed listing of parts included in
the Dual Marker Option. Use this list to inventory parts
received.
Tools Required
• Basic Hand Tools
24485
1. Attach two mounting
brackets (1) to each marker mount (2). NOTE: Each
marker mounts to backside of coulter toolbar.
Make sure shear bolt (7) will be positioned twoards front of
hitch once markers are attached to toolbar.
2. Secure mounting brackets (1) on marker mount (2) using 3/816 X 5 bolts (3), 3/8 lock washers (4), and 3/8-16 hex nuts (5).
© Copyright 2006 Printed
5/5/2009
Figure 1
Marker Mounting Brackets
113-479M
Dual Marker Option
2
Refer to Figure 2
3. U-bolt mounting brackets (2) to rear coulter toolbar (1) as coulter spacing allows. Use 5/8-11 X 4
X 5 1/4 u-bolts (3), 5/8 lock washers (4), and 5/811 hex nuts (5) to secure mounting brackets (2) to
coulter toolbar (1).
4. Check to make sure shear bolt is oriented towards front of hitch.
5. Complete steps 3 and 4 to attach opposite marker
and mount to rear coulter toolbar.
Great Plains Mfg., Inc.
Marker Assembly
Disk Adjustment
Refer to Figure 3
The agressiveness and the mark left by the disk
may be changed by two methods:
a. Disk Angle: To change the angle of cut,
loosen the two vertical bolts (1) in the
marker arm and rotate the disk assembly.
Retighten bolts.
b. Disk Tip: To change the tip of the disk,
loosen the two horizontal bolts (5) in the
pivot adjustment. Rotate the disk assembly and retighten. The marker width adjustments are made by loosening the
marker tube u-bolt (3) and sliding it in or
out to the desired width. Retighten the ubolt.
24486
Figure 2
14061
Figure 3
Disk Adjustment
5/5/2009
Great Plains Mfg., Inc.
Hydraulic Assembly
NOTE: JIC fittings do not require high torque. JIC
and O-Ring fittings do not require sealant. Always
use liquid pipe sealant when adding or replacing
pipe thread fittings. To avoid possible danger of
cracking hydraulic fittings from overtightening -DO
NOT use plastic sealant tape.
Refer to Figure 4
1. Mount sequence valve (1) on sequence valve mount
(2). Secure valve (1) on mount (2) with 3/8-16 X 1
bolts (3) and 3/8 lock washers (4).
2. U-bolt sequence valve mount (2) on hitch (6) using
1/2-13 X 8 1/16 X 9 u-bolt (5). Position sequence
valve (1) so four ports point to the rear of the implement and two ports face the tractor. Secure u-bolt
(5) with 1/2-13 nylock nuts (7).
3. If not already done, install a 9/16" male o-ring boss
x 9/16" male JIC adapter (8) into each end of both
hydraulic cylinders.
Installation Instructions
4. Install a 9/16" female JIC X 9/16" male JIC 90 degree
elbow (9) into each end of the marker cylinders.
5. Two more 9/16" female JIC x 9/16" male JIC 90 degree
elbows (9) are required on on the base end of the
marker cylinders to offset the hoses around the marker
rest post (10).
6. Route the 57" long hydraulic hoses (11) from the elbows (9) at the ports marked C1 & C2 on the sequence
valve (1) to the elbows (9) on the base ends of the
marker cylinders.
7. The 70" hoses (12) attach to the elbows (9) on the sequence valve (1) ports marked R1 & R2 and the elbows (9) on the rod end of the marker cylinders.
8. The two 156" hoses (13) attach to the remaining two
elbows (9) on the sequence valve (1) opposite the
marker ports and are routed to the hitch (6).
9. Tie all loose hoses together with cable ties provided.
3
5/5/2009
24484
Figure 4
Hydraulic Hose Assembly
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