Great Plains 3P1006NT Operator Manual - Manual (Page 55)

Great Plains Manufacturing, Inc. Table of Contents Index Maintenance and Lubrication 51
2011-12-20 Table of Contents Index 151-144M
Eyebolt Adjustment (s/n A1058W-)
(applies to drills with serial numbers A1058W-
For serial number A1059W+, see page 50)
Refer to Figure 46
It may occasionally be necessary to make adjustments to
the eyebolts at the top of the lift-assist weldments, for
example:
• drill is out of level side-to-side, or;
• lowered position is too high even with no spacers on
the cylinder rod.
To check side-to-side level:
1. Move the drill to a flat surface; a concrete pad is
ideal.
2. Raise the drill. Install the lift-assist lock channel/s.
3. Lower the lift assist circuit completely. Lower the
tractor 3-point lift arms just enough to keep the drill
reasonably level front-to-back (and keep the openers
off the ground).
4. Measure from the ground to the rear corners of the
walkboard. If these measurement do not agree
within
1 ⁄
8
to
1 ⁄
4
inches (5 mm), adjust the eyebolts.
To make adjustments:
5. Determine which side (or both) to adjust, and what
change in drill height is required.
6. Hitch the drill to the tractor’s 3-point lift arms. Raise
the drill, and support the rear tool bar on jack stands.
7. Loosen the jam nut .
8. Rotate the adjuster nut (under weldment top, not
visible in figure) by the amount of height change
required. Move the eyebolt
lower increases height.
Moving the eyebolt higher decreases height.
9. Tighten the jam nut.
10. Lower the drill and check the setting.
The factory setting for eyebolt reveal is:
3 in. (76 mm)
Figure 46
Lift-Assist Eyebolt (A1058W-)
28387
2
1
3
4
1
2
3
4