Great Plains 3PYP Operator Manual - Manual (Page 53)

Great Plains Manufacturing, Inc. Table of Contents Index Adjustments 49
2014-09-09 Table of Contents Index 401-312M
Upper Drive Sprocket
1.
Obtain the driven sprocket selection from the Seed
Rate Chart. Make sure your configuration actually
needs to be changed.
2. Loosen the bolt on the forward idler , and slide the
idler to the bottom of its track.
3. Remove split plastic spacer . It will be to the left of
the smaller (18 tooth) sprocket if the 18T was in use,
and to the right of the larger (36 tooth) sprocket if the
36T was in use.
4. Move the spacer (part number 120-337S) to the
other side of the sprocket pair, sliding the sprocket
pair
left or right to make room.
5. Lift the chain off the sprocket formerly in use, and
move it to the sprocket to be used.
6. Slide the idler up, and tighten its bolt, allowing
1 ⁄
4
inch slack in the longest chain span.
Transmission Sprockets
1.
Obtain the initial sprocket pairing from the Seed Rate
Chart.
2. Loosen the bolt on the forward idler , and slide the
idler to the bottom of its track.
3. Remove the lynch pins from both the driving , and
driven shafts.
4. Remove the chain and hang it behind a lynch pin on
the low range.
5. As needed, exchange the existing sprocket pair for
the new pair, using alternate sprockets from the
vertical storage spindle
.
Equipment Damage/Misapplication Risks:
Make sure the correct sprockets are mounted on the driving or
driven shafts as called for by the Charts.
6. Slide the idler up, and tighten its bolt, allowing
1 ⁄
4
inch slack in the longest chain span.
7. Store the removed and any loose sprockets on the
spindle shaft and re-pin it. Make sure all eight
alternative sprockets are accounted for.
Figure 48
Upper Drive Sprocket
25261
a
b
c
Driven
Driving
a
b
c
a
Figure 49
Transmission Sprockets
25262
4
2
1
3
Driving
Driven
1
2
3
4
1