Great Plains DVN8324 Assembly Manual - Manual (Page 25)

Great Plains Manufacturing, Inc. Assembly 21
11/25/2013 550-466Q-ENG
Refer to Figure 19
Hose Handles
93. To distinguish hoses on the same hydraulic circuit,
refer to hose handles. The hose under an extended-
cylinder symbol feeds a cylinder base end. The hose
under a retracted-cylinder symbol feeds a cylinder rod
end.
94. Once all hoses are tightened, hook hoses to tractor
Refer to Figure 20
Purging Hydraulic System
95. Charge the lift system first. Extend the lift cylinders
(black handles) until the center section is fully raise.
Remove the cylinder transport locks
. The wings will
not start to rise until the center cylinders are fully
extended and the master cylinders begin to bypass oil
through the rephasing ports, to the wing cylinders.
Watch for leaks and retighten fittings if necessary.
Continue to pump oil to the lift system until the wing
cylinders are also fully extended. At this point, reverse
the flow and lower the unit to the ground, retracting all
cylinders. Raise and lower the unit several times to
purge air from the system.
96. You may now charge the fold system. Before charging
the fold cylinders , make sure the rod end of the cyl-
inders are un pinned and block is under cylinder as
shown, so that when the rod is extended, it will clear
the wing fold brackets. Extend the fold cylinders
(green ends) 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.
Remove wood block and install 1 x 3 1/8 pin
, 1.5 x
1.0 x.075 machine washer and 3/16 x 2 cotter pin.
97. The gang lift system (red handles), will need
purged like the lift system. Raise and lower the gang
system several times to purge air from system.
Figure 19
Hose Handles
41552
Figure 20
Hydraulic Purging
41584
3
5
2
1
4
1
2
3
3
4
5