Progressive Turf Equipment Pro-Flex 120 14272040 And Above - Manual (Page 46)

Pro-Flex 120 Series Operator’s Manual
42
HYDRAULICS
Hydraulic Oil – Conventional Anti-Wear Tractor-Hydraulic Fluid
Biodegradable Oils – Consult Factory for compatibility analysis.
Hydraulic fluid escaping under pressure can penetrate the skin.
Seek medical attention at once if injured by escaping fluid.
During your daily inspection repair all leaks before they create a major
problem. Do not use your hand to check for hydraulic oil leaks. Use a
piece of cardboard instead. Hydraulic fluid escaping under pressure
can penetrate the skin causing serious injury. If skin penetration
occurs, seek medical attention immediately. Relieve all pressure
before disconnecting hoses.
When servicing any hydraulic component of the mower ensure that all
decks and wings are in their lowered position and all hydraulic
pressure is relieved. Pressure can be maintained in the hydraulic
circuits long after the power source and pump have been shut down.
Relieve all pressure before disconnecting hoses or tubes.
Tighten all connections before applying pressure.
When connecting the hydraulic couplers to the tractor, be sure that
both coupler ends are clean. Dirt in the hydraulic system can block
the orifice in the line throttle valve or cause premature wear & failure
of hydraulic components on the mower or tractor.
The hydraulic system on the Pro-Flex 120 mower is divided into 2
simple systems; one to operate the deck lift cylinders, the other to
operate the wing lift cylinders.
NOTE- A quarter-turn ball valve is located in the wing cylinder circuit
(at the tractor coupler). This valve is used to shut off the hydraulic
system to the wing lift cylinders and
must be closed when
operating the mower to avoid unwanted wing movement during
mowing. Failure to close the valve will lead to uneven cutting &
reduced belt life.
VALVE CLOSED VALVE OPEN
All hydraulic cylinders are equipped with a .040” diameter orifice in
one of the elbow connectors. This orifice is present to throttle the
cylinder speed to an acceptable level. When repairing the hydraulic
system ensure that this orifice elbow is present and free of debris that
could block the orifice.
WING LIFT
CYLINDER HOSE
DECK LIFT
CYLINDER HOSES
HANDLE DIRECTION
ACROSS FLOW
DIRECTION
HANDLE DIRECTION
IN-LINE WITH FLOW
DIRECTION
ORIFICE
Orifice Location:
Wings – Base End
Decks – Rod End