Operator Manual Manual

70 PD8070 Table of Contents Index Great Plains Manufacturing, Inc.
401-479M Table of Contents Index 2014-07-23
30 Series Opener Disks and Scrapers
1. Lift side gauge wheel off ground. Move tire in and out
to check for end play. Check for roughness in bearing
by rotating wheel. If the bearings are rough, inspect
and replace if necessary.
2. Remove side gauge wheels from arms to access
opener disks and scrapers.
Sharp Object Hazard:
Be careful when working in this area. Disk edges are sharp.
Note: Your 30 Series row unit may also have optional
gauge wheel scrapers (not shown). Adjustments to
these are described on page 51.
Refer to Figure 80
3. With the unit raised, check blade spreader for
wear. Replace spreader if it is 13 mm (
1
⁄
2
inch) wide
or narrower. To replace, remove disk blade. Drive out
roll pins and install a new spreader.
4. Check disk blades for wear. Replace
38 cm (15 inch) blades if worn to a diameter of
36.8 cm (14
1
⁄
2
inches) or less.
5. When reinstalling disk blades, put two shims
between bearing and shank on one blade. Tighten
bolt. On opposite side, reinstall blade with two
shims between bearing and shank. Tighten bolt.
Note: You may need fewer washers on worn disks.
6. Check contact point between disk blades. Place a
piece of paper in top gap between disks blades.
Bring paper down until it stops. In lower gap, place
another piece of paper. Bring paper up until it stops.
Measure the distance between two pieces of paper.
The distance must be between 12.5 and 44.5mm
(
1
⁄
2
and 1
3
⁄
4
inch). Add or remove shims as needed
to get the correct contact point.
Figure 80
Opener Scraper
17766
2
4
5
1
3
1
2
3
4
4