Great Plains 8560 FCF Assembly Manual - Manual (Page 26)

22 8323-8560FCC Great Plains Manufacturing, Inc.
560-483Q-ENG 02/10/2014
Purging Hydraulic System
Refer to Figure 29
134.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 raise 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.
135.You may now charge the fold system. Before charg-
ing the fold cylinders , make sure the rod end of the
cylinders are un pinned and block is under cylinders
as shown on rear cylinders, 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 con-
nected to the wing fold brackets.
136.Remove wood blocks and install 1 x 7 Gr. 8 special
thread bolts , 1 flat washers and 1 top lock nut to
rod end of inside wing cylinders and slot in fold
bracket.
Note: Tighten 1 x 7 Gr. 8 special thread bolt down to
where there is 1/16” to 1/8” gap. Be sure bolt will
still turn freely.
137. Remove wood blocks and install 1 x 7 hinge pins ,
1 flat washers, 1 3/4 rollers and 3/8 x 2 roll pins to
base end of outer wing cylinders and rocker.
Figure 29
Hydraulic Purging
41914
U
D
F
B
L
R
1
5
4
1
3
3
3
3
2
1
2
3
3
4
4
5