Great Plains 3S-5000HDF Material Rate - Manual (Page 5)

Great Plains Manufacturing, Inc. Table of Contents Main Box Rates Setting Main Box Seed Rate 3
2012-06-04 Table of Contents Main Box Rates 195-325B
Setting Drive Type
Refer to Figure 1
Drive Type is determined by the size (tooth count) of a
sprocket on the seed jackshaft
of each drill section. If
changed, the sprocket must be set identically on each
drill section (3 locations).
For correct Drive Type, refer to seed-rate 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 at right, and Figure 2 below.
Changing Drive Type
1. Loosen top idler and slide idler well forward,
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 second innermost. Make sure all four
sprockets are accounted for when remounting them
on the shaft.
4. Remount drive chain on the second innermost (Drive
Type) sprocket.
5. Re-engage top idler and secure. Allow
1 ⁄
2
inch
(13 mm) slack in longest (top) span of chain.
6. Set the same Drive Type on all three drill sections.
Figure 1
Drive Type 2 Configured
26481
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
1
4
2
3
5 1
Figure 2
Drive Type Chain Routing
18839
2
3
4 5
1