Great Plains
| 118-732M | 4/4/19
62
1510P & 1520P
Maintenance and Lubrication
Opener Disks
1.
On 20 Series openers, remove side gauge wheel
arm & wheel assembly by removing
5/8 inch bolt (4) to access opener disks and
spreaders.
2.
Check disk blades for wear.
Refer to Figure 73
3.
When reinstalling disk blades, put two shims (4)
between bearing and shank on one blade and two
shims under bolt. Tighten bolt. On opposite side,
reinstall blade with two shims between bearing and
shank and two shims under bolt. Tighten bolt.
Refer to Figure 74
4.
Check contact point between disk blades. Place a
piece of paper in top gap between disk blades.
Bring paper down until it stops. In lower gap place
another piece of paper. Bring paper up until it stops.
The distance must be between
1
/
2
and 1
3
/ inches.
Add or remove shims as needed to get the correct
contact point.
Disk edges are sharp. Be careful when working in this area.
Opener Disk Spreader
Refer to Figure 70 on page 57
1.
On 20 Series openers, remove side gauge wheel
arm & wheel assembly by removing
5/8 inch bolt (4) to access opener disks and
spreaders.
2.
With the unit raised, check blade spreader (1) for
wear. Replace spreader if it is
7
/
16
inch wide or
narrower, or if opener is plugging with dirt. To
replace, remove disk blade (3). Drive out roll pins
(2) and install a new spreader.
NOTE: Disk spreaders are loose to move freely.
20433
Figure 73
Disk Spreader
1/2 inch to
1 3/4 inches
18412
Figure 74
Opener Disks Contact Point
