Material Rate Manual

Great Plains Manufacturing, Inc. Table of Contents Metric Charts Main Box Seed Rate 3
2014-03-10 Table of Contents Metric Charts 175-157B
Setting Drive Type
Refer to Figure 1 and Figure 2
Drive Type is determined by the size (tooth count) of a
sprocket on the seed jackshaft .
For correct Drive Type, refer to the charts beginning on
page 8. The charts list Drive Types as 1, 2, 3 or 4. Each
Drive Type corresponds to a specific sized sprocket, per
the table below, and Figure 1.
Changing Drive Type
1. Loosen top tightening idler and slide idler well aft,
particularly if changing to Drive Type 1.
2. Lift drive chain off sprocket currently in use.
3. Remove lynch pin and rearrange sprockets on
jackshaft .
• Sprocket corresponding to the required Drive Type
is innermost.
• Sprockets have offset hubs. On the driven drive
type sprocket, orient the longer hub side to drill
right (toward the bearing).
• Make sure all 4 sprockets are accounted for when
remounting them on the shaft. No particular hub
orientation is required for the sprockets in storage.
4. Remount drive chain on the innermost (Drive Type)
sprocket.
5. Re-engage top idler and secure. Allow
1
⁄
2
inch
(1.3 cm) slack in longest (top) span of chain.
Drive
Type
Sprocket Relative Speed
1 72 Tooth Slowest
2 34 Tooth 2.12 times faster than Type 1
3 23 Tooth 3.13 times faster than Type 1
4 14 Tooth 5.14 times faster than Type 1
Figure 1
Drill Drive Type Decal
818-826C
2
1
2
3
4 5
1
Figure 2
Drive Type 1 Configured
16650
1
4
3
5