Great Plains YP2425F-2470 Material Rate - Manual (Page 42)

40 YP2425 & YP2425F Table of Contents Appendix Great Plains Manufacturing, Inc.
401-406B Table of Contents Appendix 2013-09-23
Ground Drive Fertilizer Rate
One or two CDS-John Blue
®
ground drive pumps (on
newer planters), or two Hypro ground drive pumps (on
older planters), customarily supply a Type 2 boom on the
planter. Rate setting is different for each pump type.
JohnBlue Pump Rate
Refer to Figure 15 and Figure 16
One piston pump generally suffices for “starter”
application rates. Two piston pumps may be required for
higher rates.
Coarse rate is set by a single “driving” sprocket on the
ground drive assembly. Fine rate is set on a dial (setting
hub)
at the pump, using a tool supplied with the pump.
Rate settings may be established in any of three ways:
• the table on the next page,
• the slide chart provided with the pump, or;
• a calculator on the JohnBlue internet web site
( www.cds-johnblue.com )
1. Check plumbing setup. See “Setting Relief Valve”
and “Strainer” in the Operator Manual.
2. Determine Driving sprocket (15T or 47T) required
from table, slide chart or web calculator. If this
sprocket is already installed on driven shaft, skip to
step 7. Otherwise, to change sprocket, continue with
step 3.
3. Remove knob and guard . Loosen idler , and
remove chain from lower jackshaft .
4. Select the new sprocket from the storage shaft .
Remove the pins, and exchange sprockets. Store the
previous sprocket on the storage shaft.
5. Remount the chain . Re-engage idler , tightening
so that the longest span of the chain has 1 ⁄
4
in (6mm)
of slack.
6. Remount guard and secure with knob .
Refer to Figure 16
7. Using the box-wrench end of the JohnBlue
115681-01 tool, loosen the setting pointer nut
.
8. Use the other end of the tool to rotate the dial to
the setting determined by table, slide chart or web.
9. Re-tighten pointer nut.
Figure 15
CDS-John Blue
®
Pump
28416
Contact wheel and chain system operate whenever the
planter is lowered and in motion. If planting without
fertilizing, the pump must not be allowed to run dry.
Disconnect chain or remove sprocket.
4
3
2
5
6
7
8
9
2
3
4
5 6 7
8 3
9
Figure 16
Pump Dial
26155
4
9
8 7
6 5
9
4