Great Plains 1205NT Operator Manual User Manual
Page 43
3/28/12
150-131M
41
Adjustments
Folding Speed with Sequence Valve
The marker hydraulic system is equipped with
needle valves to control how fast each marker op-
erates. The needle valves are built into the
sequence valve body.
Refer to Figure 3. Adjust folding speed with hex
adjustment screws on the sequence valve body.
There is one adjustment screw for raising speed
(1) and one for lowering speed (2). Identify adjust-
ment screws by markings stamped in valve body.
With tractor idling at a normal operating speed,
adjust marker folding to a safe speed. Turn adjust-
ment screws clockwise to decrease folding speed
and counterclockwise to increase folding speed.
Excessive folding speed could damage markers
and void the warranty.
After adjusting folding speed, tighten jam nuts on
hex adjustment screws to hold settings.
Markers cycle in the following sequence:
1.
Right up, Left up
2.
Right down, Left up
3.
Right up, Left up
4.
Right up, left down
5.
Sequence repeats
Folding Speed with Needle Valve
Needle valves control the speed of each marker
and is located at the rod ends of the marker
cylinders.
Refer to Figure 4. With tractor idling at a normal
operating speed, adjust marker folding to a safe
speed. Turn adjustment knob clockwise to reduce
folding speed or counterclockwise to increase
folding speed. Excessive folding speed could
damage markers and void the warranty.
Figure 3
Marker Sequence Valve
14048
Figure 4
Single Marker Needle Valve
14062