Great Plains 6548 Series VII Field Cultivator-Rigid Hitch Operator Manual - Manual (Page 24)

Section 1: Assembly
Table of Contents ► Great Plains Mfg., Inc.
Series VII 6330-6548 Field Cultivator, Rigid Hitch 560-203M 1/20/2005
22
Fold Cylinders, Rocker Arm and 3” Rollers Assembly
Connect the center fold 4 x 24 DB
cylinders (1) to the center fold bracket as
shown in Figure 9. Use the 1” x 3 1/2 clevis
pin (2) with 1” machine washer and 3/16 x 2
cotter pin. Attach the 6 1/2” rocker (3) to
rocker bracket with 1 x 3 Headed Pin (4) using
1” machine washer and 3/16 x 2 cotter. Do
Not Connect Rod End Of Cylinders To
Rockers Before They Are Charged With
Oil.
Figure 9
On 5-section models, connect the base
of the 4 x 16 DB fold cylinders (7) to the
Rocker/Fold bracket with 1 x 3 1/2 clevis pin
(2), 1” machine washer and cotter (see Figure
10). Do Not Connect Rod End Of Cylinders
To Rockers. Bolt the hose holders (5) to the
center frame with a 1/2 x 4 1/2 hex bolt (6),
using a lock washer and hex nut.
Place a support block of wood under
the cylinders, as shown, so they clear the
rockers in the extended position. You are now
ready to connect the hydraulic hoses to the
cylinders and charge the fold system (see
hydraulic layout).
Figure 10
Once the fold cylinders are fully
charged and free of air, connect them to the
rockers. Use a 1 x 5 1/2 bolt (8) to bolt two 3”
rollers (9), one on each side, to the 180 degree
rocker as shown in Figure 10. Secure with 1”
nylon lock nut. Rollers must turn freely!
Figure 11
On machines with rear fold cylinders
and Magnum Shanks, the hydraulic fittings
need to be rotated as shown in Figure 11 to
clear the Magnum shank upright when folded.
10/27/2005