GREAT PLAINS 7323DH, Predelivery Manual

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Series II Disk Harrow Table of Contents Index Assembly 15
2021-06-10 Table of Contents Index 556-235Q
Purging Hydraulic System
Refer to Figure 14
38. Charge the lift system first, this includes the
hydraulics for the gauge wheel if equipped. Extend
the lift cylinders (black handles) until the center
section is fully raised. Place a block under the
gauge wheel cylinder to allow it to move freely. Hold
lever back so the lift cylinders will be filled with oil.
Remove the cylinder transport locks and store on
frame plate . Raise and lower the gang system
several times to purge air from system. Watch for
leaks and retighten fittings if necessary.
39. You may now charge the fold system. Before
charging the fold cylinders , make sure the rod end
of the cylinders are un-bolted or un-pinned and a
block is under the cylinders as shown, so that
when the rod is extended, it will clear the wing fold
brackets. Extend the fold cylinders (green
handles) completely and then close them. Extend
and retract the cylinders several times to purge air
from the system. Now the cylinders may be
extended far enough to be connected to the wing
fold brackets.
40. The fold cylinders may now be connected to the wing
fold brackets. Use the 1” x 5.38” snap ring pin , 1”
washers, and 1” heavy snap rings provided.
41. Charge the hydraulic leveling cylinder at this time
(red handles). Extend and retract this cylinder
several times also.
42. The unit may now be folded. Once unit is raised
completely, slowly fold the machine, watching that
hoses do not get pinched, etc.... Once machine is
fully folded, install the transport locks. Now the unit is
in transport mode.
1
5
2
3
4
5
4
6
1
3
2
4
5
6
Figure 14
Hydraulic Purging
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