Great Plains NTA3007HD Operator Manual
Part Lists Great Plains Manufacturing, Inc. 1
Contact Drive Wheel Update
NTA907HD and NTA3007HD
General Information
These instructions explain how to update the contact
drive wheel on an NTA907/3007HD. The kit improves the
reliability of the drive system in challenging field conditions. One kit updates one air drill.
These instructions apply to an installation of:
Kit Kit Description
166-366A NTA 907 CONTACT DR WHL UPDATE
This kit is not required for drills manufactured in 2011 or
later.
When you see this symbol, the subsequent instructions
and warnings are serious - follow without exception.
Your life and the lives of others depend on it!
Update
Manual
Related Documents
Have the following manuals available for implement operations and parts identification:
166-207M Operator Manual
166-207P Parts Manual
Notations and Conventions
U
F
L
D
Call-Outs
1 9
to
19
11
to
51 71
to
Single-digit callouts identify components in
the currently referenced Figure. These numbers may be reused for different items from
page to page.
Two-digit callouts in the range 11 to 19 reference new parts from the lists on
page 13page 15.
Two-digit callouts in the range 51 to 71 reference existing parts from the list on page 15.
“Left” and “Right” are facing in the
direction of machine travel. An orienta-
R
tion rose in the line art illustrations
shows the directions of Left, Right,
Front, Back, Up, Down.
B
Figure 1
Kit Components
32009
© Copyright 2011 Printed 2012-02-21 Part Lists 166-367M
2 Great Plains Manufacturing, Inc. Front Page Part Lists Contact Drive Update
Pre-Assembly Preparation
Tools Required
• cutting torch
• wire or rod welder, and welding safety equipment,
including a fire extinguisher
• ground (earthing) rod, cable and clamp (or access to
suitable electrical safety ground reference conductor)
• suitable tractor for raising and unfolding air drill
• Great Plains 821-001C spray paint, or green exterior
enamel close to Pantone 356C, DuPont 262 or
PPG 43817
• basic hand tools
Work Location
1. Move the air drill to a location with:
• flat, non-combustible surface free of flammable
materials
• adequate illumination
• clear surface beneath for recovery of any falling or
dropped parts
Prepare Air Drill
2. Raise implement with tractor.
3. Unfold implement.
4. Install lift and transport locks.
5. Disconnect all harnesses to tractor.
6. Connect a grounding cable from the center section
main frame to earth ground
Burn and Fire Hazards:
This update requires cutting and welding thick metal. Perform
the work clear of flammable materials. Wear suitable protective equipment. Allow hot parts to cool before continuing
work.
Crushing and Sharp Object Hazards:
Be careful working near openers. Discs and other parts may
be sharp.
Equipment Damage Risk:
Disconnect harnesses and ground frame before welding.
Connected harnesses or ungrounded frame during welding
can result in permanent damage to seed monitor components.
166-367M Front Page Part Lists 02/21/2012
Dismount Contact Drive Front Page Part Lists Great Plains Manufacturing, Inc. 3
Dismount Contact Drive
Start with the right side of the implement.
Dismount Input Shaft
Refer to Figure 2
64
1
69
65
64
1
69
65
1
64
67
7. Relax the idler on the contact drive chain . Lift the
chain off 27T driving sprocket .
8. At the front shaft, remove and save two sets:
65
805-180C PIN ROLL 1/4 X 1 1/2 LG PLT
69
814-134C TIRE/WHEEL ASSY 13/5 X 6
9. Remove and save one 27T sprocket:
67
808-311C SPKT 50C27 X 7/8 HEX BORE
10. Remove, record and save all:
64
804-061C WASHER MACH 1.50 X 1.00 X 18GA
Record the count here:
67
Input Shaft Washer Count
Right, Outside
Right, Inside
Left, Outside
Left, Inside
11. Remove and save the shaft:
57
266-003D SHAFT 7/8 HEX 32.75
Disconnect Hold-Down Spring
Refer to Figure 3
12. At each of the hold-down springs , remove and
save one set:
61
803-020C NUT HEX 1/2-13 PLT
63
804-015C WASHER LOCK SPRING 1/2 PLT
58
266-250D TUBE RND 1OD X 7/32W X 1.44 L
59
802-226C HHCS 1/2-13X2 3/4 GR5
13. Leave the spring in place, but tie it up out of the
way. The lower lug (not shown in the figure) is torch
cut at step 31 on page 5.
66
66
Figure 2
Contact Drive Input Shaft
61
66
58
59
63
Figure 3
Disconnect Hold-Down Spring
32066
32066
02/21/2012 Front Page Part Lists 166-367M
4 Great Plains Manufacturing, Inc. Front Page Part Lists Contact Drive Update
Dismount Output Sprockets
Refer to Figure 4
14. Relax the idler on the contact drive output chain .
Lift the 144P chain off the 30T sprocket .
15. Remove and save 117P chain:
51
136-259D CHAIN RL #50 117 PITCHES
16. At the sprocket end of the shaft , drive out the roll
65
pin . This pin is not re-used.
17. Remove and save the first of two sprockets:
68
808-319C SPKT 50C30 X 7/8 HEX BORE
18. Remove and save any spacer washers (not shown):
64
804-061C WASHER MACH 1.50 X 1.00 X 18GA
in between the sprockets and the bearing.
Record the count here:
56
Output Shaft Washer Count
Right
68
64
2
56
68
65
68
2
51
Figure 4
Existing Drive Shaft
32066
Left
19. Remove and save the second of two 30T sprockets:
68
808-319C SPKT 50C30 X 7/8 HEX BORE
Remove Pivots and Arms
Refer to Figure 5
20. At the pivot shaft , drive all inside roll pins .
Optionally remove the outside pin as well. These
pins are not re-used.
21. Remove the shaft . It is not re-used.
22. Remove six sets of lock nuts and round head
shank neck bolts ( ), four flangettes and two
spherical bearings . These are not re-used.
The bearings in the drive arms remain installed.
23. Remove and save one of:
54
166-201H CONTACT DRIVE WELDMENT RIGHT
55
166-205H CONTACT DRIVE WELDMENT LEFT
24. Repeat step 7 through step 23 for the left side.
56 65
56
62
60 71
70
62
71
71
65
60
70
65
Figure 5
Existing Pivot Bearings at Frame
56
54
32066
166-367M Front Page Part Lists 02/21/2012
Cut Clearances Front Page Part Lists Great Plains Manufacturing, Inc. 5
Cut Clearances
Elongate Input Shaft Slot
The curved slots (4 places) for the contact drive input
shaft need to be elongated by 21.0 mm (0.83 in).
Refer to Figure 6 and Figure 21 on page 12
25. Make two copies of page 12 at 1:1 (100%) size (or
print at 100% size from the PDF of this manual), for
use as marking templates. A ruler image is included
on the page to verify that the copy is 1:1 scale.
26. Mark the elongation boundary (the dashed line) on
the tongue mount plates.
27. Use a torch, or similar tool capable of cutting thick
steel, to elongate the four curved slots . Check the
final edge against the template.
3
Notch Spring Brackets
Figure 6
Input Shaft Slot
3
29379
The parallel arm spring brackets (where the bottom
of the hold-down springs attach) need to have a notch
cut in them (8 places) to allow spring clearance at the
limits of the arm movement now allowed by the longer
curved slots.
Refer to Figure 7 and Figure 20 on page 11
28. Make four copies of page 11 at 1:1 (100%) size (or
print at 100% size from the PDF of this manual), for
use as marking templates. A ruler image is included
on the page to verify that the copy is 1:1 scale.
29. Mark the notch boundary (the dashed line) on the
tongue mount plates.
30. Protect neighboring machine parts from being overheated.
31. Use a torch, or similar tool capable of cutting thick
steel, to cut the notches. Check the final edges
against the template.
53 4
4
Figure 7
Spring Brackets with Notches
53
29434
02/21/2012 Front Page Part Lists 166-367M
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