4010 ATD LT ASSY/OPER/PARTS MANUAL (74303) 12/08
HYDRAULIC SYSTEM CHARGING
Once all hydraulic circuits have been
assembled as noted and the hoses have
been attached it is important to properly
charge the system.
NOTE: THE SYSTEMS ON THIS UNIT
WILL REQUIRE A LARGE AMOUNT OF
HYDRAULIC OIL TO FULLY CHARGE AND
PURGE. MAKE CERTAIN THE SYSTEM
USED TO CHARGE THE CIRCUITS HAS
ADEQUATE HYDRAULIC PRESSURE
(2700 PSI MINIMUM) AND CAPACITY. OIL
MAY NEED TO BE ADDED TO THE PUMP
RESERVOIR TO COMPLETE CHARGING.
ALL CIRCUITS MUST BE FULLY CHARGED
BEFORE LIFTING OR FOLDING THIS
UNIT
CHARGING MAIN LIFT CIRCUIT
Sequencing systems require that all cylinders
be fully charged with oil. This is accomplished
by forcing oil into the main or master cylinder,
in this case the 5x8 cylinder located on the
front hitch. When the cylinder is charged
with oil and fully extended it will move into a
bypass mode, oil will move out of the rod end
port and to the next cylinder in the sequence.
That cylinder will extend into bypass and
move oil to the next, etc. This initial process
can take a considerable amount of time. After
all the main lift cylinders have been mounted
with both the base and rod ends properly
secured and the hydraulic hoses in place
apply pressure to the system. Continue to
hold pressure on the base 5x8 cylinder as the
oil will bypass and extend the next cylinder in
the circuit. Continue to apply pressure until all
cylinders have been fully extended.
Once all cylinders are fully extended, retract
the cylinders. All cylinders should retract
in sequence. Fully extend the cylinders
again and check to ensure all cylinders are
purged and fully extended and are moving
in sequence.
NOTE: It may require that the main lift system
be re-sequenced periodically during use.
CHARGING WING FOLD CIRCUIT
Connect the wing fold circuit to the oil
supply and apply pressure. The main frame
wing fold cylinders will slowly extend to full
extension. Make certain that the cylinders do
not contact machine parts while extending
and retracting.
NOTE: the wing fold cylinders may contain
a restrictor in the circuit for safety. This
restrictor can make the charging of the
system seem slow but is necessary. All
wing fold cylinders must be fully charged
and cycled before connecting the rod
ends to the lift brackets.
Once all cylinders have been charged, fully
retracted and fully extended, attach the rod
ends to the noted anchor points (28).
CHARGING TRANSPORT LIFT CIRCUIT
As with the wing fold circuit, support the
cylinder while extending and charging. Once
the circuit has been charged and cycled,
attach the rod ends of the rear transport lift
cylinders to the appropriate anchor points
and secure (24).
REAR PACKER ASSEMBLY
Referring to page (26) assemble the rear
packers to the rear packer frames. Insert
the packer spring, spring retainer and spring
cap. Secure with the hardware noted. Initially
tighten the spring bolt to lightly compress
the spring. Mount the packer wheels and
securely tighten all mounting bolts. Refer to
the operational information on page (27) for
additional information on packer settings.
FINAL ASSEMBLY
Attach the front hitch components, insert and
secure the all hub & spindles and mount the
tire assemblies.
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