Great Plains 3S-3000HDF Operator Manual v1 - Manual (Page 84)

80 3S-3000/F/HD/HDF Table of Contents Index Great Plains Manufacturing, Inc.
195-441M Table of Contents Index 2014-07-01
Opener-Frame Clearance
Refer to Figure 87
When fully raised, top of opener mounts should clear
bottom of drill frame tube by at least 1 ⁄
2
inch (12.7mm).
To adjust opener frames so all openers have the same
clearance, loosen jam nut
on opener lift cylinders and
turn adjustment nut. When openers are at the correct
height, retighten jam nut. Repeat at each opener lift
cylinder if necessary.
Marker Maintenance
Marker Transport Carrier
When marker is folded, the second section should be
centered in transport carrier saddle and be parallel with
top of drill box.
Refer to Figure 88
To adjust height of saddle, loosen 1 ⁄
2
x2in U-bolts that
hold carrier tube to mounting bracket. Slide carrier tube
up or down as needed.
Marker Shear Bolt
The marker arm is attached to marker body with a shear
bolt
, which is intended to fail if the marker strikes an
obstruction, allowing the marker to swing back around a
second bolt
.
If the shear bolt breaks, replace it with an equivalent
3 ⁄
18
-16x2in Grade 2 bolt (Great Plains part 802-266C). If
that size is not available in your local market, temporarily
substitute an M10x1.5 Class 5.8 metric bolt and nut.
Note: Replacing the bolt with a lower grade, or smaller
size, can result in nuisance shears.
Equipment Damage Risk:
Replacing the bolt with a higher grade can result in marker
damage.
FigureSpacer
Figure 87
Opener Frame Clearance
18853
2
1
1
2
FigureSpacer
Figure 88
Marker Transport Carrier
15632
1
1
2
3
FigureSpacer
Figure 89
Marker Shear Bolt
15669
2
3