Great Plains PD8070 Operator Manual - Manual (Page 43)

1/24/2006 401-266M
41 Maintenance and Lubrication
Opener Disks, Scrapers, and Gauge Wheels
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.
Refer to Figure 30
3. With the unit raised, check blade spreader (1) for
wear. Replace spreader if it is 1/2 inch wide or
narrower. To replace, remove disk blade. Drive
out roll pins (2) and install a new spreader.
4. Check disk blades (3) for wear. Replace blades if
worn to a diameter of 14 1/2 inches or less.
5. When reinstalling disk blades, put two shims be-
tween bearing and shank on one blade. Tighten
bolt. On opposite side, reinstall blade with two (4)
shims between bearing and shank. Tighten bolt.
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 piec-
es of paper. The distance must be between 1/2
and 1 3/4 inches. Add or remove shims as need-
ed to get the correct contact point.
7. Check that outside disk scrapers (5) are
formed to disk blades to help remove any
mud. Bend and twist scrapers to fit blades as
necessary. After every 200 acres of planter
operation, check outside scrapers for proper
adjustment and wear. Replace outside
scrapers as necessary.
Refer to Figure 31
8. Check for correct number of shims between
side gauge wheel (1) and wheel arm (2). At
least one shim must be between wheel bear-
ing and arm. When installed, wheel should
turn freely and not hit arm at curve. Do not
add any more shims than necessary.
9. Disassemble side gauge wheel arm from
row unit. Remove bushing (3) from sleeve (4)
and check bushing for wear. Replace bush-
ing if necessary.
10. When reinstalling side gauge wheels, align
tab on hex adjustment (5) with notch in bush-
ing. Replace bolt and tighten.
11. Adjust side gauge wheels. See Side Gauge
Wheels, “Adjustments,” page 25.
17766
17791
Figure 31
Side Wheels
Figure 30
Opener Scrapers