Great Plains 4000TM Operator Manual User Manual
Page 35
Great Plains Manufacturing, Inc.
Operating Instructions
31
10/30/2012
586-288M
16. As far as leveling the wings to the center section, if the
wings were pre-leveled as shown in “Wing Adjust-
ment” on page 19, then further adjustment should be
done with the down pressure setting. If the wings are
running low, back off the down pressure. If wings are
running high, increase the down pressure, see
“Hydraulic Down Pressure 1800-3000” on page 23,
“Hydraulic Down Pressure 3500” on page 24 or
“Hydraulic Down Pressure 4000” on page 25 for com-
plete down pressure adjustment. If no down pressure is
being used, set the wings to match the depth of the
center Refer to Figure 31. Start by loosening jam nut
with turnbuckle wrench (stored on rear pegs of hitch).
Turn the turnbuckle
to adjust. (Shorten turnbuckle to
run shallower, lengthen to run deeper).
17. The Turbo Max may be operated with the gangs run-
ning from 0-6 degrees. Changing this angle does affect
the operation of the unit in a couple of ways. As indi-
cated above, if the blades are operated at an angle,
down pressure is generally unnecessary. Also, operat-
ing speeds will need to be less when operating with the
blades angled 3-6 degrees. Operating speeds should
be from 6-8 mph when operating gangs in the angled
position and from 8-10 mph when operating in the
straight position.
18. In a first time operation, it is generally best to operate
the unit at a slight angle to the rows. If the unit is used
as a secondary pass it is recommended to operate the
unit at a slight angle to the previous tillage pass. This
will improve trash flow and increase the leveling capa-
bility.
19. Refer to Figure 32. Once the machine is level and set to
the desired depth, set the depth stop
at the front of the
machine to ensure that the unit will operate at a consis-
tent depth every pass. After setting the stop, if a change
of depth is desired, 1 full turn of the handle
either in or
out will change the depth approximately 1/4” up or down
respectively.
Note: Slight tire to ground pressure should be maintained to
prevent cylinder pin and clevis wear. If after setting the
depth stop, the detent on the tractor kicks out before the
stop contacts the button
on the depth stop, slow the
hydraulic flow speed down. If this problem exists, con-
tact the factory service representative for other possible
adjustments. On tractors with a timed detent setting, set
the detent so when you raise the machine, the pump will
run for 1/2 to 1 full second after full raise. If it runs longer
than this, damage to the seals of the lift cylinders may
result.
20. Varying the angle on the gangs will also change the
results of your operation. It is recommended to oper-
ate the Turbo Max with the gangs in the straight posi-
tion when this is your last pass ahead of the planter
or grain drill. This will leave the best possible seed-
bed for planting. It is not recommended to operate
the tool at a depth deeper than the intended planting
depth.
Figure 31
Wing Adjustment
42247
1
2
1
2
1
2
Figure 32
Depth Stop Adjustment
42250
3
1
2
3