Great Plains 3N-4025P Operator Manual - Manual (Page 78)

3N-4010P, 3N-4015P, 3N-4020P and
3N-4025P
196-286M 4/23/2010
76
20 Series Opener Side Wheels
Refer to Figure 110
1. Lift opener side wheel off the 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. Check for the correct number of flat washers
(1) and machine washer (8) between the side
gauge wheel (2) and the wheel arm (3). There
must be three flat washers (1) and one ma-
chine washer (8) between the wheel bearing
and arm with the machine washer (8) next to
the arm. There should be three flat washers
(1) and one lock washer (9) on the outside of
the wheel. When installed, the wheel should
turn freely and not hit the arm at the curve. Do
not add any more washers than necessary.
3. Disassemble side-gauge-wheel arm from
unit. Remove bushing (4) from sleeve (5) and
check bushing for wear. Replace bushing if
necessary.
4. When reinstalling side gauge wheels, align
tab on hex adjustment (6) with notch in bush-
ing. Replace bolt and tighten.
5. To prevent plugging loosen clamp bolt (7) and
slide arm inward to take up gap between side
wheel and disk blade.
6. Adjust side gauge wheels. Refer to “Adjust-
ments,” page 36.
20 Series Opener Disk Spreader
Refer to Figure 111
1. On 20 Series openers, remove side gauge
wheel arm and 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.
20432
20433
Figure 110
Figure 111