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Hydraulic Fold System
WARNING
Escaping hydraulic fluid can cause serious
personnel injury. Relieve system pressure before
repairing, adjusting, or disconnecting. Wear
proper hand and eye protection when searching
for leaks. Use cardboard instead of hands (See
Figure 3-2.) Keep all components (cylinders,
hoses, fittings, etc.) in good repair.
Figure 3-2: Hydraulic Leak Detection
1. The Pulvi-Mulcher is equipped with a hydraulic fold
system to raise and lower the wing frames for narrow
transport.
2. Be sure the system is fully charged with hydraulic oil
before attempting to fold/unfold the unit. 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.
3. To charge the system, carefully hitch the
Pulvi-Mulcher to a tractor. Unpin the end(s) of the fold
cylinders, and position them so the rod end can
extend and retract without contacting any frames or
other parts. Check the tractor hydraulic fluid level to
make sure it is full of the manufacturer's
recommended hydraulic fluid. Connect the cylinder
hoses to the tractor and fully extend and retract the
cylinders 5 or 6 times. The cylinder rod travel should
be smooth and positive when all air has been purged
from the system. Due to large amounts of hydraulic oil
required, recheck the tractor fluid level to make sure it
is within proper operating limits.
4. The hydraulic fold system is equipped with restrictors
in the cylinders 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.
9J577-0822
TABLE OF CONTENTS
5. To fold/unfold the Pulvi-Mulcher, find a level area
large enough to accommodate the unit when it is fully
unfolded. The tractor should be stopped and not
moving with the unit fully raised.
6. Slowly engage the tractor lever and fold/unfold the wing
frames. When the wings are unfolded, continue holding
the tractor lever to fully extend all fold cylinders. This
will allow the wings to fully flex in the field.
The Fold Circuit requires approximately 3 gallons of oil.
Hydraulic Lift System
1. The Pulvi-Mulcher is equipped with a hydraulic lift
system to raise and lower the unit in the field.
2. Be sure the system is fully charged with hydraulic oil
before transporting and field operations. Air in the
system can allow uncontrolled dropping of the frame
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/repairs.
3. Check to make sure the tractor hydraulic reservoir is
full of the manufacturer's recommended oil.
4. Slowly raise the machine, and continue to hold the
hydraulic lever until all lift cylinders are fully extended.
Lower and raise the unit to verify that all cylinders are
working simultaneously throughout the stroke.
5. Fully extend the lift cylinders and continue to hold the
lever until all cylinder rod movement stops.
6. Raise/Lower machine 5 or 6 times to purge air from
the system.
7. Do not loosen any hoses or fittings. Recheck tractor
reservoir to make sure it is within operating limits.
The Hydraulic Lift Circuit requires approximately 2
gallons of oil.
3-3
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