GREAT PLAINS NTA3007HD, Руководство оператора

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Great Plains | 166-207M | 02/26/2019 Table of Contents Index 128
NTA907HD and NTA3007HD Table of Contents Index Maintenance and Lubrication
Tool Bar Heights
Tool bar heights must be checked and adjusted in
representative field conditions, with openers lowered to
planting height, and pulled forward in the ground, as for
section alignment checking above. New drills are shipped
with the wing eyebolts not fully tightened. They must be
set before first planting.
9. Check that rows are fully lowered, running level, and
that center front and wing gauge wheels are not
running light. Adjust down-pressure and weight
transfer as needed (page 84).
If rows are not running level, adjust sub-frame shims
as needed (page 89).
Refer to Figure 144 (shown with wings folded for clarity)
10. Check opener sub-frame tool bar height at the center
section. Measure from the average soil surface level
to the bottom of the rear opener tool bar.
The distance should be:
76.2cm (30in).
Refer to Figure 145
11. Check sub-frame tool bar height at the inside and
outside ends of the wing rear tool bar. If either end
differs from center height by more than about 6mm
(
1

4
in), adjust the eyebolt above the parallel arms
at that end.
12. To adjust an eyebolt:
Back the upper jam nut up a few turns. Adjust the
lower nut . The adjustment is about 2.8mm (0.11in)
of opener height per turn of the adjuster nut.
Whether adjusted or not, secure the 1-8 jam nut to
torque spec (page 153).
13. Check and set all four (4) wing ends and eyebolts.
14. Pull forward and re-check height.
Figure 144
Checking Tool Bar Height
29519
Figure 145
Adjusting Wing Tool Bar Height
29520
3
1
2
1
2
3