Great Plains 3-Point Drills Assembly Instructions - Manual (Page 2)

2 3-Point Bedded Irrigation 121-700M 8/29/12
Great Plains Mfg., Inc.
Assembly Instructions
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Gauge Wheel Adjust Link Assembly
Refer to Figure 1-2:
Assemble the gauge wheel adjust link into the bottom hole of the
gauge wheel mount. set the adjust link length to the 18 3/16 di-
mension shown. any further adjustments that may need to be
made can be done by loosening the jam nut on the top clevis of
the adjust link and lengthening or shortening the adjust link as
needed. after all adjustments have been made check the centers
of the adjust link clevises to make sure they are the same & then
tighten the jam nut.
Opener mounting instructions
Refer to Figure 1-5:
1. Assemble the rear mount drop bracket (#2) onto the drill frame
using a 1/2-13 u-bolt (#3) two 1/2 lock washers (#4) & two 1/2-13
hex nuts (#5) as shown.
(note: the front mount drop bracket (#1) mounts to the under side
of the frame 3 x 3 tube, & the u-bolts go in from the top.)
2. Assemble the straight arm opener (#10) onto the front mount
drop bracket (#1), or the rear mount drop bracket (#2) using a 1/
2-13 x 5 1/2 carriage bolt (#6), two pivot bushings (#8), pivot pipe
(#9), & 1/2-13 hex flanged lock nut (#7).
3. Assemble the bedded irrigation spring rods (#12) onto the
straight arm opener (#10) using a 3/8-16 x 3 5/8 flanged bolt
(#24), & 3/8-16 hex flanged lock nut (#23). Place the spring w-
clips (#11) into the bedded irrigation spring rods (#12) as shown.
Assemble the compression springs (#13) onto the bedded irriga-
tion spring rods.(note: only part of the compression springs are
shown for clarity).
Figure 1-2
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4. Assemble the spring rod casting (#18) onto the top of the bed-
ded irrigation spring rods (#12) & secure in place with a 1/4-20 x
3/4 hex bolt (#14), two 1/4 lock washers (#15), & a 1/4-20 hex nut
(#16). Place the offset spring rod clip l.h. (#17) & offset spring rod
clip r.h. (#19) onto the spring rod casting (#18), & secure onto the
drill box using a 3/8-16 u-bolt (#20), two 3/8 lock washers (#21),
& two 3/8-16 hex nuts (#22).
W-Clip Placement
Refer to Figure 1-3 & 1-4:
For straight arm openers that are assembled in the bottom set of
holes in the bedded irrigation drop brackets, assemble the com-
pression spring w-clip in the holes of the spring rod as shown in
fig. 1-2. For straight arm openers that are assembled in the mid-
dle set of holes in the bedded irrigation drop brackets, assemble
the compression spring w-clip in the holes of the spring rod as
shown in fig. 1-3.
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Figure 1-3
9th hole
Figure 1-4
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7th hole