3S-4000, 3S-4000F, 3S-4000HD, 3S-4000HDF
Operating Instructions
45
2018-06-19
195-442M
Marker Operation
Optional markers are equipped with a double-selector
valve, on the tongue near the hitch, to combine the
box-fold circuit with the marker circuit.
On a 2-outlet tractor, there is a second selector valve, for
the lift circuits, mounted above the marker/fold selector.
This combines the transport lift hydraulic circuit and
opener lift hydraulic circuit.
To operate the double selector valves, turn handle on top
of valve toward hydraulic hoses of the circuit which you
wish to operate.
After drill is unfolded for field operation, move
double-selector valve handle from forward fold
position
to marker circuit (back
). Before operating
markers, make sure they are properly bled as described
in “
Single Marker Operations
To operate a single marker, activate tractor remote
hydraulic lever to move marker in desired direction.
Single markers are equipped with a needle valve to
control marker folding speed. Excessive folding speed
can damage markers, so adjust needle valve to a safe
operating speed as described under “
reach ground when unfolded, or is skipping Marker
Speed
Dual Marker Operations
Dual markers are equipped with an automatic sequence
valve to control lift sequence. Starting with both markers
up, the sequence is:
•
Activate hydraulic lever; right marker lowers while left
marker stays up.
•
Reverse hydraulic lever; right marker raises while left
marker stays up.
•
Activate hydraulic lever; left marker lowers while right
marker stays up.
•
Reverse hydraulic lever; left marker raises while right
marker stays up.
Pattern repeats.
Folding speed of dual markers is adjusted with
adjustment screws on sequence-valve body. Excessive
folding speed can damage markers, so adjust markers to
a safe folding speed as described under “
Figure 41
Fold / Marker Selector
15550
1
2
