Great Plains 4000TM Predelivery Manual - Manual (Page 27)

Great Plains Manufacturing, Inc. Assembly 23
03/19/2014 586-537Q
Purging Hydraulic System
Refer to Figure 19
73. Charge the lift system first. Extend the lift cylinders
(black handles) until the center section is fully raised.
Remove the cylinder transport locks
and store on lift
straps . Raise and lower the lift system several times to
purge air from system. Retract and extend the gang sys-
tem
(Red Handles) several times to purge air from sys-
tem. Watch for leaks and retighten fittings if necessary.
74. You may now charge the fold system. Before charging the
fold cylinders , make sure the rod end of the cylinders
(model 4000 will have two fold cylinders on front on both
sides of machine) are un-bolted or un-pinned and block is
placed under cylinders 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.
75. Now the rod end of fold cylinders may be hooked up to
wing with the 1 x 3 1/8 usable pin , 1.5 x 1.0 x.075
machine washer and 3/16 x 2 cotter pin. Bend cotter pin
over to secure.
Figure 19
Purging Hyd. System
42278
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5
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