Great Plains ADI445 Operator Manual - Manual (Page 32)

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Section 2 Operating Instructions
Model 2250 Air Drill Implement 160-192M 5/11/05
Great Plains Mfg., Inc.
Implement Lifting System
The implement lifting system is equipped with rephasing-
type hydraulic cylinders in a master-slave configuration.
They must be bled free of air using the procedures listed in
Bleeding the Hydraulic Lifting System in the “Assembly
and Setup” section on page 16 for proper operation. The
cylinders may, after a period of time, get out of phase. This
will cause one section of the implement to run higher or
lower than other sections because the cylinders lifting it
are extended more or less than the others. To rephase the
cylinders, raise the implement completely up and hold the
hydraulic lever on for several seconds until all cylinders are
fully extended. This should be done every time the imple-
ment is raised out of the ground. Once all cylinders are ful-
ly extended, the hydraulic control should be momentarily
reversed to allow the cylinders to retract 1/2”. This will help
maintain a level implement.
For depth control, the implement uses stop collars on each
of the outside castor wheel cylinders, see Figure 2-1.
Along with the press wheel adjustments, the stop collars
can be added and removed to adjust the seeding depth of
the openers. When not in use, the stop collars can be
stored on the hydraulic hose connected to the cylinders.
The lift system has cylinder lock channels for the front cen-
ter dual gauge wheel cylinders. These channels must be
used every time the drill is folded or transported. The cyl-
inder lock channels must also be used any time mainte-
nance or lubrication is being performed on the implement.
Folding the Drill
!
DANGER!
Overhead crushing hazard - to prevent serious injury or death:
•
Always use transport locks when implement is folded.
•
Fold implement only if fold cylinders and hoses are bled free
of air and fully charged with hydraulic oil.
•
Stay away from frame sections when they are being
raised/lowered or are in the raised position.
•
Keep others away.
Cylinder Stop Collars
Figure 2-1
15186
!
DANGER!
Electrocution hazard -
to prevent serious injury or death from electrocution: Keep
clear of overhead power lines when transporting, folding, un-
folding, or operating all air drill components. Machine is not
grounded. Electrocution can occur without direct contact.
1. Folding is to be done on level ground only. Be aware of
the clearance required to fold the implement. Do not
fold the implement where it may come into contact
with obstructions or overhead lines. Keep all persons
clear of this area.
2. Raise implement until all lift cylinders are completely
extended.
3. Install the lift cylinder lock channels.
4. Be sure that folding lock pins are removed from the
folding lock plates, see Figure 2-2.
5. Set tractor at slow idle speed.
6. Engage the folding system hydraulics and slowly fold
the implement. During folding, both outside frame
sections should fold up first followed by one or both of
the inside sections.
7. When folding is complete, insert the folding lock pins in
place to prevent the wings from falling, see Figure 2-3.
NOTE: Never attempt to fold the implement without
first completely raising it and installing the gauge
wheel cylinder lock channels or serious equipment
damage will occur.
Folding Lock Pin Removed
Figure 2-2
15187
Folding Lock Pin in Place
Figure 2-3
15188