Great Plains FH6800HD Predelivery Manual - Manual (Page 24)

20 FH6000HD Great Plains Manufacturing, Inc.
564-070Q 01/14/2014
Drag Arms
Refer to Figure 19
Note: Harrow arms are supplied in two lengths:
• short drag arm (100.5in, 255.3cm);
These are used at the ends of the center wing, where the
mounts have a rear offset to allow the fold cylinders to
connect the wings.
• long drag arms (105.0in, 266.7cm);
These are used at all other mounts.
56. Attach the two, short drag arms at the LH and RH
outside mount of the center wing with 9/16 x 3 1/2
ZNYCR bolts
and 9/16 ZNYCR top lock nuts.
57. Attach the long drag arms to the remaining mounts
on left, center and right wing with 9/16 x 3 1/2 ZNYCR
bolts
and 9/16 ZNYCR top lock nuts.
58. Tighten lock nuts to Grade 2 (70ft-lb) to avoid crushing
arm tube.
Light Brackets
Refer to Figure 20
59. Attach light brackets to both sides of center frame with
1/2 x 3 1/2 hex bolts , 1/2 lock washers and 1/2 nuts.
60. Bolts may be tightened to specs, See “Torque Values
Chart” on page 31
Attach Harrow Drags
Step by step instructions begin on page 23.
Refer to Figure 21
Each harrow model has a different combination of har-
row drag sizes, counts and installation locations. See
table on page 21.
12-row harrow drags (shown in black) are pre-assem-
bled. Leading chains are pre-attached for 40
° tooth
angle.
Any drags with a side chain at row 12 (or row 16 with
drag extensions) are intended to connect to an adjacent
drag on the same wing. Relocate chain as needed.
If the harrow was ordered with the 16-row option (#20),
4-row drag extensions (shown in gray) may be pre-
assembled to 12-row drags (and if not, need to be
dealer-attached).
Drag extensions ordered as accessories (shown in gray)
are not pre-assembled to the 12-row drags.
Figure 19
Drag Arms
42321
3
1
1
2
2
2
3
1
2
1
3
2
3
Figure 20
Light Brackets
42322
1
2
1
2
31