General Information. Related Documents. Notations and Conventions R B F L

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1 Part Lists Great Plains Manufacturing, Inc. 1 Contact Drive Wheel Update NTA907HD and NTA3007HD 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! 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 A NTA 907 CONTACT DR WHL UPDATE Update Manual This kit is not required for drills manufactured in 2011 or later. Related Documents Have the following manuals available for implement operations and parts identification: M Operator Manual P Parts Manual Notations and Conventions F L U D R B Left and Right are facing in the direction of machine travel. An orientation rose in the line art illustrations shows the directions of Left, Right, Front, Back, Up, Down. Call-Outs 1 to 9 Single-digit callouts identify components in the currently referenced Figure. These numbers may be reused for different items from page to page. 11 to 19 Two-digit callouts in the range 11 to 19 reference new parts from the lists on page 13page to 71 Two-digit callouts in the range 51 to 71 reference existing parts from the list on page 15. Figure 1 Kit Components Copyright 2011 Printed Part Lists M

2 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 C spray paint, or green exterior enamel close to Pantone 356C, DuPont 262 or PPG 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 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. 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 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 M Front Page Part Lists 02/21/2012

3 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 7. Relax the idler on the contact drive chain 1. Lift the chain off 27T driving sprocket At the front shaft, remove and save two sets: C PIN ROLL 1/4 X 1 1/2 LG PLT C TIRE/WHEEL ASSY 13/5 X Remove and save one 27T sprocket: C SPKT 50C27 X 7/8 HEX BORE 10. Remove, record and save all: C WASHER MACH 1.50 X 1.00 X 18GA Record the count here: Input Shaft Washer 64 Count Right, Outside Right, Inside Left, Outside Left, Inside Figure 2 Contact Drive Input Shaft Remove and save the shaft: D SHAFT 7/8 HEX Disconnect Hold-Down Spring Refer to Figure At each of the hold-down springs 66, remove and save one set: C NUT HEX 1/2-13 PLT C WASHER LOCK SPRING 1/2 PLT D TUBE RND 1OD X 7/32W X 1.44 L C HHCS 1/2-13X2 3/4 GR5 13. Leave the spring 66 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 Figure 3 Disconnect Hold-Down Spring /21/2012 Front Page Part Lists M

4 4 Great Plains Manufacturing, Inc. Front Page Part Lists Contact Drive Update Dismount Output Sprockets Refer to Figure Relax the idler on the contact drive output chain 2. Lift the 144P chain off the 30T sprocket Remove and save 117P chain: D CHAIN RL # PITCHES 16. At the sprocket end of the shaft 56, drive out the roll pin 65. This pin is not re-used. 17. Remove and save the first of two sprockets: C SPKT 50C30 X 7/8 HEX BORE 18. Remove and save any spacer washers (not shown): C WASHER MACH 1.50 X 1.00 X 18GA in between the sprockets and the bearing Record the count here: Output Shaft Washer 64 Count Figure 4 Existing Drive Shaft Right Left 19. Remove and save the second of two 30T sprockets: C SPKT 50C30 X 7/8 HEX BORE Remove Pivots and Arms Refer to Figure At the pivot shaft 56, drive all inside roll pins 65. Optionally remove the outside pin as well. These pins are not re-used. 21. Remove the shaft 56. It is not re-used. 22. Remove six sets of lock nuts 62 and round head shank neck bolts ( 60 ), four flangettes 71 and two spherical bearings 70. These are not re-used. The bearings in the drive arms remain installed. 23. Remove and save one of: H CONTACT DRIVE WELDMENT RIGHT H CONTACT DRIVE WELDMENT LEFT 24. Repeat step 7 through step 23 for the left side Figure 5 Existing Pivot Bearings at Frame M Front Page Part Lists 02/21/2012

5 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 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 3. Check the final edge against the template. Notch Spring Brackets The parallel arm 53 spring brackets 4 (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 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. Figure 6 Input Shaft Slot 3 4 Figure 7 Spring Brackets with Notches /21/2012 Front Page Part Lists M

6 6 Great Plains Manufacturing, Inc. Front Page Part Lists Contact Drive Update Install Welded Parts Install Down Stops Lugs (4 places) are added to the tongue mount plates to provide limit stops. This protects against machine damage in the event of low tire pressures. Refer to Figure 8, Figure 9, Figure 22 (on page 13) and Figure 23 (on page 14) 32. Remove paint from the area to be welded. 33. Make two copies each of page 13 and page 14 (4 total) 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 pages to verify that the copy is 1:1 scale. 34. Mark the location for each lug. Center-punching the corners suffices. 35. Select four new: D CONTACT WHL DOWN STOP Note: The lugs are symmetrical. The flat sides are identical. 36. Position each lug with one flat side to frame, the other flat side up, curved side out, and canted 17 degrees forward. Tack weld. Re-check dimensions or against template. 37. Allow tack welds to cool. Final weld all around with a 9 mm ( 3 8 in) weld fillet. Figure 8 Down Stop Installed mm 2.1 mm 2.1 mm (0.08 in) from bottom rear corner of lug to vertical rear edge of tongue mount plate mm (3.06 in) from bottom front corner of lug to top edge of parallel arm reinforcement plate below. Figure 9 Down Stop Placement Dimensions M Front Page Part Lists 02/21/2012

7 Install Welded Parts Front Page Part Lists Great Plains Manufacturing, Inc. 7 Install Pivot Tubes Start with the right side of the implement. Refer to Figure 10, Figure 11and Figure Remove paint from the frame around the former bearing mount holes. 39. Select one new: D CONTACT WHL PVT TUBE Insert the tube through the frame holes where the previous pivot shaft was removed. 40. Adjust the tube position for a reveal of 81.0 mm (3.10 in) on the outside of the frame (left reveal on left side; right reveal on right side). Tack weld the tube. Recheck the reveal. 41. At the outside face of the outside frame plate, and the inside face of the inside frame plate, weld the contact circumference of the tube/frame joints with a 9mm ( 3 8 in) weld fillet 4. Note: It is not necessary to fill the former bolt holes 4 during welding. 42. Repeat step 38 through step 41 for the left side. 43. Wait for the welds to cool. 44. At all welds, remove welding residue and any charred paint. Apply matching green paint. 45. Allow paint to dry Figure 10 Pivot Tube and Bearings mm (3.19 in).epsi 100% Figure 11 Pivot Tube Placement Figure 12 Pivot Tube Weld /21/2012 Front Page Part Lists M

8 8 Great Plains Manufacturing, Inc. Front Page Part Lists Contact Drive Update Re-install Contact Drive Arms Start with the right side of the implement. Two workers may be needed due to parts that are held in alignment for shaft insertion. Install New Pivot Shaft Refer to Figure Select two new: V BEARING.880 HEX BORE 205DD Insert and seat one bearing 12 at each of the pivot tubes 14. The orientation groove 7 is to the inside of the tube 14. The raised face 8 of the inner race is to the outside of the tube. 47. Select one new: D CONTACT WHEEL PIVOT SHAFT 48. Select the saved: H CONTACT DRIVE WELDMENT RIGHT H CONTACT DRIVE WELDMENT LEFT depending on the side being worked on. 49. Select one each new: D 7/8 HEX SHAFT SPACER TB X 9 Note: Make sure that the arms are above the new down stops (not shown) before the next step. 50. Hold the spacer tube 16 against the inside face of the inside arm bearing 70. Bring the existing arm bearings 70 into alignment with the new bearings 12. From the inside, insert the shaft 15 through the existing bearing, spacer tube and both pivot tube bearings Select one new: C WASHER MACH 1.50 X 1.00 X 1 Slide this washer between the outside pivot tube bearing 12 and the outside arm bearing 70, Slide the shaft 15 through the washer 17 and the outside arm bearing Select the number of saved: C WASHER MACH 1.50 X 1.00 X 18GA per the Output Shaft table (page 4) for the side of the implement being worked on. Place these on the inside end of the shaft. 53. Select two saved 30T sprockets: C SPKT 50C30 X 7/8 HEX BORE Place them on the inside end of the shaft Select two: C PIN ROLL 1/4 X 1 1/2 LG PLT Drive the pins through the ends of the shaft. 55. Repeat step 46 through step 54 for the left side Figure 13 Bearing Orientation Figure 14 Pivot Tube and Bearings M Front Page Part Lists 02/21/2012

9 Re-install Contact Drive Arms Front Page Part Lists Great Plains Manufacturing, Inc. 9 Re-Mount Drive Wheels Start with the right side of the implement. Refer to Figure Select one saved: D SHAFT 7/8 HEX Insert the shaft through the forward bearings 70 on the arms, and the curved slots in the tongue mount plates Select the number of saved: C WASHER MACH 1.50 X 1.00 X 18GA per the Input Shaft table (page 3) for the side of the implement being worked on. Place these on their respective ends of the shaft. 58. Select one saved: C SPKT 50C27 X 7/8 HEX BORE Add it to the inside end of the shaft. 59. Select a saved 117P chain: D CHAIN RL # PITCHES Route the chain 51 over the sprocket Select two sets saved: C TIRE/WHEEL ASSY 13/5 X C PIN ROLL 1/4 X 1 1/2 LG PLT Add one wheel to each end of the shaft. Secure with roll pins Figure 15 Re-Install Drive Wheels Re-Install Chains Refer to Figure Route contact drive chain 51 through idlers 1 and over driven sprocket 68 (closest to contact drive arm). Engage idlers Route contact drive output chain 52 over driving sprocket 68 (furthest from contact drive arm). Engage idlers Figure 16 Re-Install Chains /21/2012 Front Page Part Lists M

10 10 Great Plains Manufacturing, Inc. Front Page Part Lists Contact Drive Update Re-Connect Springs Refer to Figure Check spring rod length. Unless you have developed a customer setting for your conditions, verify that the spring is adjusted to factory default length. 6.7 cm (2.63 in) 27.3 cm (10.75 in) with spring relaxed Figure 17 Hold-Down Spring Length Refer to Figure 18 and Figure Select one set saved: C HHCS 1/2-13X2 3/4 GR D TUBE RND 1OD X 7/32W X 1.44 L C WASHER LOCK SPRING 1/2 PLT C NUT HEX 1/2-13 PLT 65. Insert a tube 58 into the lower hook of a hold-down spring. Align the hold-down spring 66 with the lower/ forward hole of the notched bracket 4. Secure with bolt 59, lock washer 63 and nut Repeat step 63 for the other spring on this side. 67. Repeat step 46 through step 66 for the left side of the implement Figure 18 Re-connect Hold-Down Spring Figure 19 Notched Hold-Down M Front Page Part Lists 02/21/2012

11 Appendix Front Page Part Lists Great Plains Manufacturing, Inc. 11 Appendix Notch Cutting Template New Edge Existing Edge Existing Edge New Edge Figure 20: Notching Template /21/2012 Front Page Part Lists M

12 12 Great Plains Manufacturing, Inc. Front Page Part Lists Contact Drive Update Plate Cutting Template Existing Bottom New Bottom 21mm (0.83 in) Figure 21: Plate Cutting Template M Front Page Part Lists 02/21/2012

13 Appendix Front Page Part Lists Great Plains Manufacturing, Inc. 13 Stop Placement Template LH Figure 22: Stop Placement Template - Left Hand /21/2012 Front Page Part Lists M

14 14 Great Plains Manufacturing, Inc. Front Page Part Lists Contact Drive Update Stop Placement Template - RH Figure 23: Stop Placement Template - Right Hand M Front Page Part Lists 02/21/2012

15 Appendix Front Page Part Lists Great Plains Manufacturing, Inc. 15 Part Lists New Parts The part call-out numbers in this list match all Figures in these installation instructions. Part descriptions match those in your updated Parts Manual A Kit Contents Quantities are units ( ea ). Callout Quantity Part Number Part Description M MANUAL NTA 907 CONT DR UPDA V BEARING.880 HEX BORE 205DD D CONTACT WHL DOWN STOP D CONTACT WHL PVT TUBE D CONTACT WHEEL PIVOT SHAFT D 7/8 HEX SHAFT SPACER TB X C WASHER MACH 1.50 X 1.00 X C PIN ROLL 1/4 X 1 1/2 LG PLT Other Parts Callout Quantity Part Number Part Description C PAINT GP GREEN SPRAY CAN Existing Parts Affected The following existing parts are involved in the kit installation. The Disposition column indicates whether the part is left in place, moved or not re-used. The part call-out numbers in the list matches all Figures in the installation instructions. The descriptions match those in your air drill Parts manual. Callout Qty Part No. Part Description Part Disposition D CHAIN RL # PITCHES Removed and re-installed D CHAIN RL # PITCHES Removed and re-installed H ARM PARALLEL W/ SPNG BRKT WELD Modified in place H CONTACT DRIVE WELDMENT RIGHT Removed and re-installed H CONTACT DRIVE WELDMENT LEFT Removed and re-installed D HEX SHAFT 7/8X20.56 LONG Removed. Not re-used D SHAFT 7/8 HEX Removed and re-installed D TUBE RND 1OD X 7/32W X 1.44 L Removed and re-installed C HHCS 1/2-13X2 3/4 GR5 Removed and re-installed C RHSNB 5/16-18X1 GR5 Removed and re-installed C NUT HEX 1/2-13 PLT Removed and re-installed C NUT HEX FLG TP LK 5/16-18ZNYCR Removed and re-installed C WASHER LOCK SPRING 1/2 PLT Removed and re-installed C WASHER MACH 1.50 X 1.00 X 18GA Removed and re-installed C PIN ROLL 1/4 X 1 1/2 LG PLT Removed. Not re-used C SPRING HOLD DOWN HD COULTER Disconnected and re-connected C SPKT 50C27 X 7/8 HEX BORE Removed and re-installed C SPKT 50C30 X 7/8 HEX BORE Removed and re-installed C TIRE/WHEEL ASSY 13/5 X 6 Removed and re-installed C BRG 7/8HEXX2.05OD SPH Removed and re-installed C FLANGETTE 52 3-BOLT PLT Removed and re-installed. 02/21/2012 Front Page Part Lists M

16 16 Great Plains Manufacturing, Inc. Front Page Part Lists Contact Drive Update Abbreviations #50 Number 50 chain link OD Outside Diameter ASSY Assembly PLT Plated BRG Bearing PVT Pivot BRKT Bracket RHSNB Round Head Shank Neck Bolt DR Drive RL Roller FLG Flanged SPH Spherical GA Gauge SPKT Sprocket GP Great Plains TB Tube GR5 Grade 5 TP LK Top Lock HD Heavy Duty UPDA Update HEX Hexagonal W Width HHCS Hex Head Cap Screw W/ with L, LG Long WHL Wheel MACH Machined X By NTA No-Till Air (drill) ZNYCR Zinc Chromate Great Plains Manufacturing, Inc. Corporate Office P.O. Box 5060 Salina, Kansas USA M Front Page Part Lists 02/21/2012