Great Plains Disk Harrow Field Update Wing Hinge User Manual
Page 2

Installation Instructions
Great Plains Mfg., Inc.
SeriesI 3323DH-4336DH Wing Hinge Update 557-331M
1/27/2009
2
After you get the four hinge bolts and
washers replaced, leave the machine lowered
to the ground and replace the 1 x 9 hex bolt in
the leveler assembly. You may have to adjust
the turnbuckle (7) or move the hydraulic level
option cylinder (8), depending how your
machine is equipped, to free up the 1 x 9 hex
bolt (10). Remove the 1” nylon lock nut (9)
and remove 1 x 9 hex bolt (10) and discard.
Now you may install the new 1 x 9
special thread hex bolt (11) and secure with
1” nylon lock nut (12, draw nut down snug
but do not torque to specs as the leveler needs
to move freely. You may have to re level the
machine as shown in the operators manual.