Advertisement
Purging the Hydraulic
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 2-28. Keep all components (cylinders,
hoses, fittings, etc.) in good repair.
Figure 2-27: Hydraulic Leak Detection
The hydraulic system is not filled with oil and should be
purged of air before transporting and field operations.
Carefully hitch the Pulvi-Mulcher to the tractor and
connect the hydraulic lift hoses. Check to make sure the
tractor hydraulic reservoir is full of the manufacturer's
recommended oil.
F-982-0223
TABLE OF CONTENTS
Purge the Lift Cylinders
Slowly raise machine and continue to hold hydraulic lever
until lift and leveling cylinders are completely extended.
Lift Cylinders are rephasing in extend. Hold leveler in
raise to purge Lift Cylinders.
Lower and raise unit completely extend and retract
cylinders 5-6 times to purge air from the lift circuit. Do not
loosen hoses/fittings. Recheck tractor reservoir oil level.
With machine raised, lift circuit requires 4.9 gallons of
hydraulic oil. With machine lowered, requires 4.5 gallons
of hydraulic oil.
Purge Fold Circuit
With fold cylinders disconnected from wings and blocked
up to allow for rod movement, connect fold circuit hoses
to tractor. Ensure tractor reservoir is full of manufacturer's
recommended oil. Extend fold cylinders. Recheck tractor
oil reservoir. Extend and retract fold cylinders 5-6 times or
more if movement is not smooth or until air is purged from
the circuit. Fold Circuit requires 6.0 gallons of hydraulic oil
and with wings unfolded, requires 7.2 gallons of hydraulic
oil.
ASSEMBLY
2-31
Advertisement
