Great Plains John Deere 30' Dual 750 Flat Fold Markers - Manual (Page 8)

John Deere 30’ Dual 750
205-052M 3/20/2003
6
John Deere Dual 750 Marker
See the "Parts Section" of this manual to identify
individual components not mentioned in these
installation instructions.
1. Place drill in a lowered field position. From each end
of the drill box allow 16 ft. clearance for marker
assembly.
Refer to Figure 1
2. Attach the marker first section with mount (4) to the
drill frame as illustrated using the 3/4" x 6 1/32" U-
bolts (1), 3/4" flat washer (2) and 3/4" locking flange
nut (3).
Refer to Figure 2
3. Assemble the marker in a horizontal position,
remove the port plugs in the hydraulic cylinder to
allow the fold cylinder to be extended. Then fold the
first section and the lift lug channel (1) to a horizontal
position.
4. With the shear bar positioned towards the front (2),
align the holes of the second section with the holes
of the lift lug channel (1) and insert the hinge pin (9)
and bolt into place with 5/16" x 2" Gr 5 bolt (4) and
lock nut (5). Also place the 7/16" x 2 1/4" Gr 5 shear
bolt (6) in position with lock washer (7) and nut (8).
Refer to Figure 3
5. Place the third section (1) over the end of the second
section (13) and insert hinge pin (9) through the
second and third section pivot. Secure the hinge pin
(9) with 5/16" x 2" long bolt (5) and lock nut (4).
6. Bolt the chain bar weldment (14) to the first section
(18) with 3/8" x 3 1/4" long bolt (16) and lock nut (6).
The chain bar weldment (14) should pivot freely on
the 3/8" bolt (16). Bolt the chain bar (10) to the third
section (1) with the 3/8" x 1 1/2" long bolt (8), washer
(7) and lock nut (6). The chain bar (10) should pivot
freely on the 3/8" bolt (8). Connect the marker chain
(2) between the chain bar (10) and chain bar
weldment (14) with 5/16" utility clevis (11). With the
marker disk adjusted for seeding width and disk
touching the ground, adjust chain length to remove
the slack. Adjustment should be made at the utility
clevis (11) nearest to the drill.
7. The purpose of the 3/8" x 2 1/2" long stop bolt (17) is
to hold tension on the marker chain (12) ONLY when
the marker is in folded position. Therefore; the 3/8"
stop bolt (17) and lock nuts (6) should be positioned
in the first section (18) so the head of the stop bolt
extends as little as possible. After marker is folded,
adjust stop bolt to tighten chain.
13696
13697
Figure 1
Marker Mount Assembly
Figure 2
Second Section Pivot Assembly
Figure 3
Third Section Pivot and Chain Assembly
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