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Hydraulic System
IMPORTANT
Unfold and lower the unit to the ground and relieve
system pressure before attempting to repair, adjust,
or disconnect components.
The Pulverizer is equipped with a single hydraulic circuit
that folds/unfolds the Wings and raises/lowers the
machine.
WARNING
Escaping fluid under pressure can be nearly
invisible and have enough force to penetrate the
skin causing serious injury. Use a piece of
cardboard, rather than your hands, to search for
suspected leaks. See Figure 3-4. Wear protective
gloves & safety glasses or goggles when
working with hydraulic systems. Keep all
components (cylinders, hoses, fittings etc.) in
good repair.
a
Figure 3-4: Hydraulic Leak Detection
Whenever folding/raising or unfolding/lowering the
Pulverizer, find a level and large enough area to
accommodate the machine when it is unfolded.
The wing fold cylinders are equipped with restrictors to
prevent uncontrolled falling of wing frames when
unfolding. Removal or improper assembly of these
restrictors can cause the machine to fold improperly and
result in serious machine damage.
Never unfold the wings past center until all air is out of the
hydraulic circuit, as Free Falling may occur.
1. The hydraulic system is not factory filled with oil and
should be purged of air before transporting and field
operations. Carefully hitch the Pulverizer to the tractor
and connect the hydraulic hoses.
2. Check to make sure the tractor hydraulic reservoir is
full of the manufacturer's recommended oil.
F-1108-0121
TABLE OF CONTENTS
3. On level ground, unfold the wings completely and
lower machine to the ground. Make sure the Wing
Cylinders are extended completely and the Transport
Axle Cylinder is retracted. The Cylinders should be
working smoothly through the stroke, if not purge the
system. See "Purging the Hydraulic System" on
page 2-18. Air in the system can allow uncontrolled
dropping of the Wing Frames causing serious
personal injury or machine damage. The system
needs to be charged with oil initially and any time the
system has been opened for repair such as cylinder,
hose, or fitting replacement/repair.
4. Do not loosen hoses/fittings after the Hydraulic Circuit
has been purged.
5. Recheck tractor reservoir oil level.
Hydraulic circuit requires approximately 4-1/2 to 6 gallons
of hydraulic oil depending on the model.
3-5
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