Great Plains Verti-Till Field Update - Manual (Page 7)

Great Plains Manufacturing, Inc. Replace Pin Retainers 7
08/06/2007 596-186M
Coulter Gang Pin Retainers
Refer to Figure 11 (showing right end only)
Replace the retaining bolts and nuts of the 16 pins in
each of eight arms connecting the coulter gangs to the
coulter sub-frame.
Coulter Gang Pivot Pins
These larger, forward/lower pins connect the arms to the
sub-frame.
22. Remove two sets of existing:
HHCS 3/8-16X2 1/2 GR5
NUT LOCK 3/8-16 PLT
These parts are not re-used.
23. Select two sets of new:
802-849C HHCS 3/8-16X3 1/4 GR8
803-013C NUT LOCK 3/8-16 PLT
Install the bolts in the pins.
Coulter Trunnion Pins
Refer to Figure 12
These smaller, aft/upper pins anchor the spring trun-
nions to the sub-frame.
24. Remove two sets of existing:
HHCS 3/8-16X2 1/4 GR5
NUT LOCK 3/8-16 PLT
These parts are not re-used.
25. Select two sets of new:
802-848C HHCS 3/8-16X2 3/4 GR8
803-013C NUT LOCK 3/8-16 PLT
Install the bolts in the pins.
U
D
B
F
R
L
Figure 11
Coulter Gang Pivot
21572
52 36
55 38
Inspect bolt heads before replacing.
If already grade 8, skip to next implement location.
52
55
36
38
Figure 12
Coulter Trunnion Pin
21572
54 35
55 38
U
D
B
F
R
L
Inspect bolt heads before replacing.
If already grade 8, skip to next implement location.
54
55
35
38