GREAT PLAINS 2N-2410, Operator'S Manual

Page: 34 / 64

2N-2410 & 2N-3010 Table of Contents Index Adjustments 31
8/2/18 Table of Contents Index 196-126M
Hydraulic Depth Control
Refer to Figure 11
The master field-lift cylinder on the left-hand transport
wheel is equipped with a hydraulic valve that regulates
coulter depth. Figure 11 shows the valve and knob
used to adjust coulter depth.
Turn the knob clockwise to lower the coulters and
counter-clockwise to raise the coulters. Each rotation
will move the coulters approximately 3/32 inches. Make
depth adjustments with the implement slightly raised.
After adjusting the valve, raise and lower the implement
several times and recheck coulter depth.
The depth stop regulates depth on all coulters. If the
ends of either box run higher or lower than the center,
the field-lift system may be out of phase or have air in it,
or the frame sections may not be level. Refer to
Lifting
the Drill in the Field , page 26, Bleed Field-Lift
Hydraulics , page 17, or Leveling Adjustment, page 39.
When performing maintenance operations, the cylinder
lock channels
must be installed on the field-lift
cylinder rods . On the left-hand field-lift cylinder,
remove bolt from the lower depth stop assembly .
Rotate the lower depth stop assembly out of the way to
prevent damage both the lower depth stop assembly
and the lock channel. Refer to
Cylinder Lock Channels ,
page 46.
The cylinder lock channels must be installed in the
storage location on the mainframe during transport.
The cylinder lock channel must not contact the lower depth
stop assembly or damage will occur.
The cylinder lock channels must not be installed on the
field-lift cylinder rods during transport or damage can occur.
Raise Coulters
16271
4
2
Lower Coulters
1
3
Raise Coulters
16271
4
2
Lower Coulters
1
3
16271
4
2
1
3
A
B
Figure 11
Left Transport-Wheel Cylinder with Depth-Control Stop
A
B
1
2
3 4