Great Plains 4000TM Predelivery Manual - Manual (Page 31)

Great Plains Manufacturing, Inc. Table of Contents Index Assembly 27
11/06/2012 Table of Contents Index 586-288Q
Purging Hydraulic System 3000-4000
Refer to Figure 28
99. 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.
100.You may now charge the fold system. Before charging
the fold cylinders , make sure the rod end of the cylin-
ders (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.
101.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 28
Purging Hyd. System 3000-4000
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