Great Plains 2510HDP Operator Manual - Manual (Page 41)

Great Plains Manufacturing, Inc. Table of Contents Index Adjustments 37
2013-10-21 Table of Contents Index 118-245M
Range Sprockets
Before setting the Range or Transmission, raise the drill
and rotate the gauge wheels. Check that seed meters,
seed tubes and drives are working properly and free
from foreign material.
Sprockets are identified by tooth counts, for example
“19” or “19T”, stamped on the face of the sprocket.
Examine any mount sprockets before removing pins, as
the needed sprocket may already be mounted.
Refer to Figure 27, which depicts a right side single-wheel
ground drive, without acremeter.
Alternate sprockets are stored on shafts on the top
and side (see Figure 29) of the ground drive.
Refer to Figure 27
8.
Loosen the bolt securing the forward idler , and
slide the idler down in its slot. Remove the chain
from any sprockets to be changed. Hang the chain
on the idlers to prevent ground contact.
9. To change the DRIVING sprocket , remove the
cotter pin securing the acremeter hex shaft adaptor
, and then the adaptor and spacer. The adaptor
may have an acremeter installed. If so, set the
assembly where it cannot fall on drill parts or the
ground.
Exchange sprockets, re-install the spacer and the
adaptor. Re-pin the adaptor.
10. To change the DRIVEN sprocket , remove the pin
, the spacers and the sprocket.
Exchange sprockets, re-install spacers and re-pin.
If Transmission does not need changing, put all
loose sprockets on storage shafts and re-pin those
shafts.
Refer to Figure 28
11. Reroute chain over sprockets and idlers. Make sure
open end of chain clip faces away from direction of
chain travel (shown by gray arrows).
12. Move idler into chain so chain has 1 ⁄
4
in slack in its
longest span (see page 112 for chain slack). Tighten
idler. Re-pin all three shafts.
13. Configure other gauge wheel to match.
Note: Each gauge wheel drives half of the drill. If a chain
breaks or is removed, that drill half does not plant.
Figure 27
Range Sprockets
22875
DRIVING
DRIVEN
3
4
2
5
1
6
1
2
3
4
Figure 28
Chain Clip Orientation
26482
5
6