Marker operation – Great Plains 3PYP Operator Manual User Manual
Page 37
Great Plains Manufacturing, Inc.
Operating Instructions
33
2014-09-09
401-312M
Marker Operation
Overhead Hazard:
To prevent serious injury or death, do not allow anyone to
stand near or beyond the end of the wings during marker
operations. Marker arms are heavy and marker discs may be
sharp.
If your 3PYP has markers, unfolding of the markers is
performed only after unfolding the wings.
The Wing switch must be OFF during all marker
operations. When Wing Fold is ON, marker switches are
disabled.
The tilt operation is performed before the unfold
operation. The tilt switch must be OFF during marker fold
operations. When Marker Tilt is ON, the Marker Fold
switch is disabled.
Before operating markers, make sure cylinders are
properly bled. See “Bleeding Hydraulics” on page 100.
This section presumes correct marker length for your
pass spacing. If this has not been set, or needs to be
changed, see “Marker Extension” on page 20.
This section presumes a factory marker chain
configuration. If your chain has been replaced, or
stretched, adjust the links to the correct slack length. See
“Marker Chain Length Adjustment” on page 88
Dual markers are equipped with an automatic sequence
valve that controls which side activates, as well as
marker deployment.
Folding speed of dual markers is adjusted via set screws
on the sequence valve body. Excessive folding speed
may damage markers. See “Dual Marker Speed
Adjustment” on page 89
Marker Fold
Marker Tilt
FRAME
Wing Fold
Right
CLUTCH
Center
Left
MASTER
Figure 30
Cab Selector Controls
25246