Operation
C2 Contour Air Drill August 2014 5-19
Wing Lift Hydraulics
The wing lift hydraulic system is controlled by a
parallel hydraulic system. A pressure compensated
Flow Control Valve is used to control the ow of oil to
the cylinders allowing both wings to fold and unfold
simultaneously. A hydraulic circuit Shut Off valve is used
to lock the hydraulic circuit and prevent any leak back,
this ensures the wings remain in transport.
The Flow Control Valve is located on the main frame
and there are no adjustments associated with the valve.
The Shut Off valve is located on the front wing lift truss
for easy access.
To unfold the Air Drill, the oil ows to the Flow Control
Valve, from there to the butt end of all the wing lift
cylinders extending the shafts and lowering the wings.
All cylinders must be fully extended to ensure correct
operation of the machine.
Placing the unit into transport is the reverse of unfolding
the unit. Oil is fed to the shaft end of the cylinders
retracting the cylinders and lifting the wings into
transport position.
Note: When raising or lowering wings, do so in one
continuous motion until fully up or down. Do
not stop ow part way allowing wings to fold
on their own. This may disrupt the sequence
of operation.
S34428
UNLOCKED
WINGS
LOCKED
DECAL - S34428
Flow Control Valve
WING VALVE
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