GREAT PLAINS YP-625 Operator's Manual
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GREAT PLAINS YP-625 Operator's Manual

4- 6- 8- and 10-row 3-point air planters with seed meters
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4- 6- 8- and 10-Row 3-Point Yield-Pro
Read the operator manual entirely. 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!
Illustrations may show optional equipment not supplied with standard unit, or
may show similar pull-type models and their options.
ORIGINAL INSTRUCTIONS
© Copyright 2017
Table of Contents
Index
Operator Manual
YP-425, 625, 825, & 1025-A3P
®
®
with Air-Pro
Manufacturing, Inc.
www.greatplainsmfg.com
Printed 2018-07-23
Index
Air Planters
Seed Meters
29997
EN
401-652M

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  • Page 1 Table of Contents Index Operator Manual YP-425, 625, 825, & 1025-A3P ® 4- 6- 8- and 10-Row 3-Point Yield-Pro Air Planters ® with Air-Pro Seed Meters Manufacturing, Inc. www.greatplainsmfg.com Read the operator manual entirely. When you see this symbol, the subsequent instructions and warnings are serious - follow without exception.

  • Page 2: Serial Number

    Machine Identification Record your machine details in the log below. If you replace this manual, be sure to transfer this information to the new manual. If you or the dealer have added options not originally ordered with the machine, or removed options that were originally ordered, the weights and measurements are no longer accurate for your machine.
  • Page 3 Great Plains Manufacturing, Inc. provides this publication “as is” without warranty of any kind, either expressed or implied. While every precaution has been taken in the preparation of this manual, Great Plains Manufacturing, Inc. assumes no responsibility for errors or omissions. Neither is any liability assumed for damages resulting from the use of the information contained herein.
  • Page 4 YP-425, 625, 825, & 1025-A3P Cover Index Table of Contents UMC Coulter Adjustments........55 Seed Disk Maintenance ...........83 UMC Coulter Depth Adjustment .......55 Cleaning and Storing Seed Disks ......83 Coulter Row Alignment..........56 Speed Sensor Gap............83 Row-Unit Opener Disk Adjustments......57 Hydraulic Maintenance............84 Setting Planting Depth..........57 Bleeding Marker Hydraulics ........84 Opener Disc Contact Region........57...
  • Page 5 YP-425, 625, 825, & 1025-A3P Table of Contents Index Important Safety Information Important Safety Information Look for Safety Symbol The SAFETY ALERT SYMBOL indicates there is a potential hazard to personal safety involved and extra safety precaution must be taken. When you see this symbol, be alert and carefully read the message that follows it.
  • Page 6 Table of Contents Index Important Safety Information Wear Protective Equipment Great Plains advises use of the following personal safety equipment.  Hearing protection, such as earmuffs or earplugs, for making planter adjustments with the hydraulic fan running.Prolonged exposure to loud noise can cause hearing impairment or loss.
  • Page 7 YP-425, 625, 825, & 1025-A3P Table of Contents Index Important Safety Information Transport Machinery Safely Maximum transport speed for implement is 20 mph (32 km/h) when driving straight. Do not exceed 13 mph (22 km/h) in turns. Some rough terrains require a slower speed.
  • Page 8 YP-425, 625, 825, & 1025-A3P Table of Contents Index Important Safety Information Handle Chemicals Properly Agricultural chemicals can be dangerous. Improper use can seriously injure persons, animals, plants, soil and property.  Read and follow chemical supplier instructions.  Wear protective clothing. ...
  • Page 9 YP-425, 625, 825, & 1025-A3P Table of Contents Index Important Safety Information Tire Safety Tire changing can be dangerous. Employ trained personnel using correct tools and equipment.  When inflating tires, use a clip-on chuck and extension hose long enough for you to stand to one side–not in front of or over tire assembly.
  • Page 10  Keep all safety decals clean and legible.  Replace all damaged or missing decals. Order new decals from your Great Plains dealer. Refer to this section for proper decal placement.  When ordering new parts or components, also request corresponding safety decals.
  • Page 11 YP-425, 625, 825, & 1025-A3P Table of Contents Index Important Safety Information Red Reflectors 838-266C On the back end of center seed hoppers, inside of daytime reflectors (rear seed hoppers on twin-row planters) and on backs of the inner marker arms (option), above daytime reflector: 2 or 4 total 68551...
  • Page 12 YP-425, 625, 825, & 1025-A3P Table of Contents Index Important Safety Information Daytime Reflectors 838-267C On the back of end seed hoppers outside of red reflectors (rear seed hoppers on twin-row planters), and on backs of the inner marker arms (option), below red reflector: 2 or 4 total To prevent...

  • Page 13: Transport Speed

    YP-425, 625, 825, & 1025-A3P Table of Contents Index Important Safety Information Amber Reflectors 838-265C On the front face of the front tool bar, each end, on the outside of the end hopper supports 4 total To prevent crushin death from pinchin serious...
  • Page 14 YP-425, 625, 825, & 1025-A3P Table of Contents Index Important Safety Information Warning: High Pressure Fluid Hazard 818-339C 31003 On right face of 3-point top hitch; 1 total Warning: Sharp Object (Option) 818-525C WARNING SHARP OBJECT HAZARD To prevent serious injury or Death from Sharp Objects: Keep hands, feet, hair, &...
  • Page 15 YP-425, 625, 825, & 1025-A3P Table of Contents Index Important Safety Information Caution: Read Operator’s Manual 818-587C CAUTION Read Owner’s Manual before using machine. Stand clear when folding and unfolding markers. Stand clear when raising and lowering machine. Keep all safety shields and devices in place. Keep hands, feet, and clothing away from moving chains and sprockets.

  • Page 16: Document Family

    Table of Contents Index Introduction Introduction Great Plains welcomes you to its growing family of new ® product owners. The 4-, 6- and 8-Row 3-Point Yield-Pro Air Planter (YP-425, 625, 825, & 1025-A3P) has been designed with care and built by skilled workers using quality materials.
  • Page 17 Refer to Figure 2 Your machine’s parts were specially designed and should only be replaced with Great Plains parts. Always use the serial and model number when ordering parts from your Great Plains dealer. The serial-number plate is located on the right end of the rear face of the main tool bar.
  • Page 18 Index Introduction Further Assistance Great Plains Manufacturing, Inc. and your Great Plains dealer want you to be satisfied with your new YP4- 6- 8- 1025A3P planter. If for any reason you do not understand any part of this manual or are otherwise dissatisfied, please take the following actions first: 1.

  • Page 19: Pre-Planting

    YP-425, 625, 825, & 1025-A3P Table of Contents Index Preparation and Setup Preparation and Setup This section helps you prepare your tractor and YP-425, 625, 825, & 1025-A3P Planter for use, and covers tasks that need to be done seasonally, or when the tractor/planter configuration changes.
  • Page 20 YP-425, 625, 825, & 1025-A3P Table of Contents Index Preparation and Setup Hitching Tractor to Planter Crushing Hazard: Do not stand or place any body part between planter and moving tractor. You may be severely injured or killed by being crushed between the tractor and planter.
  • Page 21 Wear protective gloves and safety glasses or goggles when working with hydraulic systems. Refer to Figure 5 Great Plains hydraulic hoses have color coded handle grips to help you hookup hoses to your tractor outlets. Hoses that go to the same remote valve are marked with the same color.
  • Page 22 YP-425, 625, 825, & 1025-A3P Table of Contents Index Preparation and Setup Older Style Hoses with Color Ties Refer to Figure 6 and Figure 7 on page 19 Hydraulic hoses are color coded to help you hookup hoses to your tractor outlets. Hoses that go to the same remote valve are marked with the same color tie.
  • Page 23 YP-425, 625, 825, & 1025-A3P Table of Contents Index Preparation and Setup Protect Motor Seals Applies to planters with serial numbers: (YP3P425A s/n B1004M-) (YP3P625A s/n B1006P-) (YP3P825A s/n B1007R-) 1. Connect the fan case drain line first, before making any other connections. Connect this line to a low pressure drain port.
  • Page 24 YP-425, 625, 825, & 1025-A3P Table of Contents Index Preparation and Setup Raise Parking Stands Refer to Figure 3 3. Use tractor hitch circuit to raise planter slightly off parking stands. 4. Remove hairpin and cross-pin 5. Slide stand tube up until lower storage hole aligns with bracket hole.
  • Page 25 2. Hitch configuration during planting can vary between tractor models, and due to field conditions. Great Plains recommends starting with the hitch set to Float or Position/Depth Control (and not Load or Draft Control).
  • Page 26 Row spacing data may be found in the Appendix. For speed setup, Great Plains recommends using the ® 400-foot calibration described in the DICKEY-john manual, rather than using a theoretical “# of pulses”.
  • Page 27 Hitch configuration during planting can vary between rows move backward slightly as arms swing up. tractor models, and due to field conditions. Great Plains recommends starting with the hitch set to Float or Position/Depth Control (and not Load or Draft Control).

  • Page 28: Seed Inlet Shutter

    YP-425, 625, 825, & 1025-A3P Table of Contents Index Operating Instructions Transport Loss of Control Hazard: Do not transport with insufficient ballast or with an inadequate tractor. Check that your tractor has enough ballast for the weight of the drill. A tractor with insufficient ballast has insufficient traction at the front wheels, causing loss of control, leading to a serious road accident, injury or death.
  • Page 29 YP-425, 625, 825, & 1025-A3P Table of Contents Index Operating Instructions Typical Planter Weights YP425A3P- Approximate Weights of Representative Configurations -0470 -0430 -08TR -0436 -0836 -0438 -0838 -0440 -0840 Base Planter 1500 kg 3300 lb 4600 lb 3000 lb 4800 lb 3000 lb 4800 lb 3600 lb...
  • Page 30 YP-425, 625, 825, & 1025-A3P Table of Contents Index Operating Instructions Typical Planter Weights YP1025A3P Approximate Weights of Representative Configurations -1030 Base Planter 6100 lb 6400 lb Typical Empty 8200 lb Typical Full 8500 lb Maximum Empty 10300 lb Maximum Full Center of Gravity is approximately 36 in.
  • Page 31 YP-425, 625, 825, & 1025-A3P Table of Contents Index Operating Instructions Loading Seed Machine s/n: YP425A3P with 3.0 bu Hopper s/n B1015M+ YP425A3P with 1.6 bu Hopper s/n B1016M+ YP625A3P with 3.0 bu Hopper s/n A1040P+ YP625A3P with 1.6 bu Hopper s/n B1042P+ YP825A3P with 3.0 bu Hopper s/n B1267R+ YP825A3P with 1.6 bu Hopper s/n B1269R+ YP1025A3P with 3.0 bu Hopper s/n C1002U+...

  • Page 32: Treated Seed

    YP-425, 625, 825, & 1025-A3P Table of Contents Index Operating Instructions Refer to Figure 15 3. Install correct seed disks (page 64). 4. Check that each hopper is correctly seated and secured: front and rear mounting bolts secured hopper discharge opening aligned with seed tube 5.
  • Page 33 YP-425, 625, 825, & 1025-A3P Table of Contents Index Operating Instructions Machine s/n: YP425A3P s/n B1007M thru B1015M YP625A3P s/n B1009P thru B1041P YP825A3P s/n B1014R thru B1268R YP1025A3P s/n C1001U- Refer to Figure 17 The capacity of this hopper is 1.6 bu. Within the serial number range listed above, there are two different designs of hopper lids.
  • Page 34 YP-425, 625, 825, & 1025-A3P Table of Contents Index Operating Instructions Hopper Refer to Figure 20 1. Install correct seed disks (page 64). 2. Check that each hopper is correctly seated and secured: front and rear mounting bolts secured hopper discharge opening aligned with seed tube 3.
  • Page 35 YP-425, 625, 825, & 1025-A3P Table of Contents Index Operating Instructions Machine s/n: YP425A3P s/n B1006M- YP625A3P s/n B1008P- YP825A3P s/n B1013R- YP1025A3P n/a Refer to Figure 22 and Figure 23 Figure 21 28131 The capacity of this hopper is 1.2 bu. Hopper Lid Hinge Lugs Hopper lids have distinct ends:...
  • Page 36 YP-425, 625, 825, & 1025-A3P Table of Contents Index Operating Instructions 9. Inspect the hopper for leftover seed and debris. Clean out anything other than the seed to be planted. See “Material Clean-Out” on page 81. Figure 23 36909 Hopper Lid Stored for Loading Possible Agricultural Chemical Hazards: Read and follow all supplier cautions for safe handling of treated seed.
  • Page 37 YP-425, 625, 825, & 1025-A3P Table of Contents Index Operating Instructions Monitor Operation Refer to Figure 26 ® The standard DICKEY-john PM300 system monitors the following elements of a YP4-6-8-1025A3P planter: • Seeds at each row unit seed tube: Medium and larger seeds are individually counted with high accuracy.

  • Page 38: Seed Hopper

    YP-425, 625, 825, & 1025-A3P Table of Contents Index Operating Instructions Air System Operation Figure 26 29973 ® Planter Air System for Air-Pro Seed Metering Meter Pressurization System Elements ( shows air direction) Hydraulic Fan Seed Hose Seed Tube Sensor (Figure 28) ®...
  • Page 39 YP-425, 625, 825, & 1025-A3P Table of Contents Index Operating Instructions Air and Seeding System Overview Refer to Figure 27, on page 34, and Figure 28. The hydraulic fan supplies air exclusively for meter operation. Fan rpm is operator-adjusted (page 38), normally via the tractor circuit’s hydraulic flow control.
  • Page 40 YP-425, 625, 825, & 1025-A3P Table of Contents Index Operating Instructions Fan Circuit Operation (S/N-) Applies to planters with serial numbers: (YP3P425A s/n B1004M-) (YP3P625A s/n B1006P-) (YP3P825A s/n B1007R-) (YP1025A3P n/a) See also “Fan and Adjustment” on page 50. Refer to Figure 29 Three hydraulic hoses serve the fan, and must be properly connected for the fan to operate in the correct...
  • Page 41 YP-425, 625, 825, & 1025-A3P Table of Contents Index Operating Instructions Fan Circuit Operation (S/N+) Applies to planters with serial numbers: (YP3P425A s/n B1005M+) (YP3P625A s/n B1007P+) (YP3P825A s/n B1008R+) (YP1025A3P s/n C1002U+) See also “Fan and Adjustment” on page 50. Refer to Figure 30 Operating flow Shut-off flow (fan coasting to stop)
  • Page 42 YP-425, 625, 825, & 1025-A3P Table of Contents Index Operating Instructions Fan General Operating Information Adjust the fan to provide the meter pressurization recommended for the seed disk, seed, and seed density. ° See the tables and charts for recommended values in the Seed Rate Manual.
  • Page 43 YP-425, 625, 825, & 1025-A3P Table of Contents Index Operating Instructions ® Air-Pro Meter Operation Refer to Figure 33 The meter disk is driven, top forward, by a chain drive (not shown) always connected to the section drive shaft. At non-planting rows, use a blank disk (page 66). Seed is air-delivered to the inlet above the air release screen .
  • Page 44 YP-425, 625, 825, & 1025-A3P Table of Contents Index Operating Instructions Marker Operation (Option) S/N- THIS PAGE APPLIES ONLY TO MODELS: (YP425A3P s/n B1004M-) (YP625A3P s/n B1006P-) (YP825A3P s/n B1007R-) Before Operating Markers • Make sure cylinders are properly bled. See “Marker Maintenance (Option)”...
  • Page 45 YP-425, 625, 825, & 1025-A3P Table of Contents Index Operating Instructions Marker Operation (Option) S/N+ THIS PAGE APPLIES ONLY TO MODELS: (YP425A3P s/n B1005M+) (YP625A3P s/n B1007P+) (YP825A3P s/n B1008R+) (YP1025A3P s/n C1002U+) Before Operating Markers • Make sure cylinders are properly bled. See “Marker Maintenance (Option)”...
  • Page 46 YP-425, 625, 825, & 1025-A3P Table of Contents Index Operating Instructions Field Set-Up Checklists Use the following tables to develop a final checklist for Additional or fewer steps may be necessary depending your tractor/planter configuration. on tractor features, planter options and planting accessories.
  • Page 47 YP-425, 625, 825, & 1025-A3P Table of Contents Index Operating Instructions Field Operation Perform all steps in “Pre-Start Checklist” on page 23 and “Field Set-Up Checklists” on page 42. First Pass Operation Checklist Page Suspending Planting Checklist Page Slide gates open. Shutters set. Stop tractor Raise planter and line up at start of first Fan hydraulic circuit to Float or Neutral...

  • Page 48: Seed Treatment

    YP-425, 625, 825, & 1025-A3P Table of Contents Index Operating Instructions Short-Term Parking Long-Term Storage 1. Fold markers (page 40). 1. Complete Parking steps (page 44). Park the planter indoors if possible. 2. Choose a location with level firm ground. Do not unhitch on a steep slope.

  • Page 49: Row Unit Down Pressure

    YP-425, 625, 825, & 1025-A3P Table of Contents Index Adjustments Adjustments To get full performance from your YP-425, 625, 825, & Even if your planting conditions rarely change, some of 1025-A3P planter, you need an understanding of all these items need periodic adjustment due to normal component operations, and many provide adjustments wear.

  • Page 50: Setup

    YP-425, 625, 825, & 1025-A3P Table of Contents Index Adjustments Setting Material Rates Full details on rate setting sprocket selection and installation are found in the Seed Rate Manual (pub. number 401-651B). This is a summary. Setting the seeding rate requires the following steps: 1.
  • Page 51 YP-425, 625, 825, & 1025-A3P Table of Contents Index Adjustments 3. Rate: Range Sprockets Range sprockets provide coarse control of seed rate. Refer to Figure 36 and Figure 37 All Seed Rate charts specify a DRIVING and DRIVEN sprocket combination for the Range. Crops with more than one range are noted as “LOW RANGE”...
  • Page 52 YP-425, 625, 825, & 1025-A3P Table of Contents Index Adjustments 5. Rate: Seed Inlet Shutter A consistent seed results from having a consistent number of seeds (usually one) in each pocket of the seed disk, avoiding “skips” (fewer seeds per pocket) and “doubles”...
  • Page 53 YP-425, 625, 825, & 1025-A3P Table of Contents Index Adjustments Marker Adjustments (Option) See also: • “Initial Marker Setup (Option)” on page 119 for marker speed and marker extension • “Marker Operation (Option) S/N-” on page 40; and, • “Marker Maintenance (Option)” on page 87 for marker shear bolt and marker hydraulic bleeding Marker Disk Adjustment Sharp Overhead Object and Pinch/Crush Hazards:...

  • Page 54: Re-Zero

    YP-425, 625, 825, & 1025-A3P Table of Contents Index Adjustments Fan and Adjustment 1. These steps presume that correct seed disks are installed (per Seed Rate Manual), and the seed inlet shutters are set for the seed (page 62). 2. With fan off, check meter pressurization reported by ®a the Magnehelic gauge.
  • Page 55 YP-425, 625, 825, & 1025-A3P Table of Contents Index Adjustments 10. Resume planting. A small varying population deviation between rows is normal. If a row is consistently running lower or higher than the other rows, it could indicate a meter or seed sensor problem that needs attention.
  • Page 56 YP-425, 625, 825, & 1025-A3P Table of Contents Index Adjustments Gauge Wheel Adjustments The minimum tool bar height is limited by the gauge wheels. In some conditions, such as ridge planting, you may need to use a tool bar height lower than 26 inch. Refer to Figure 43 There are two adjustments for this at the gauge wheels.

  • Page 57: Side Gauge Wheel

    YP425A3P/625A3P/825A3P/YP1025A3P Air Planter) ® From front to back, a Great Plains 25 Series Air-Pro unit can include the following capabilities (some optional): 1. Lock-Up Pin Storage Hole (Hole Standard) See “Row Unit Shut-Off” on page 65.
  • Page 58 YP-425, 625, 825, & 1025-A3P Table of Contents Index Adjustments Row Unit Down Pressure Refer to Figure 46 The ideal amount of down-force causes the side gauge wheels to compress any loose surface soil, but not press a trench into subsoil. To assess down-force, operate the planter for a short distance on typical ground (with or without seeding), and stop.
  • Page 59 YP-425, 625, 825, & 1025-A3P Table of Contents Index Adjustments An adjuster cam sets down pressure individually for each row unit. This is useful for penetrating hard soil and planting in tire tracks. For best results always adjust tractor tires so they are not ahead of 30 inch rows. Refer to Figure 50 Cam Notch Pounds...

  • Page 60: Umc-Rc (Umc Row Cleaner)

    YP-425, 625, 825, & 1025-A3P Table of Contents Index Adjustments Unit-Mount Cleaner Adjustments Refer to Figure 52 and Figure 53 Optional Martin row cleaners are unit-mounted, using: UMRC: Unit-Mount Row Cleaner (stand-alone), or UMC-RC: Unit-Mount Coulter RC (on coulter bracket, with or without a coulter disk present).

  • Page 61: Coulter Blade Mount

    YP-425, 625, 825, & 1025-A3P Table of Contents Index Adjustments UMC Coulter Adjustments  Coulters are not factory-installed. Check alignment and depth prior to first use. UMC Coulter Depth Adjustment The ideal operating depth for coulters is inch (6 mm) above opener depth.
  • Page 62 YP-425, 625, 825, & 1025-A3P Table of Contents Index Adjustments Coulter Row Alignment Refer to Figure 56 For unit-mounted coulters, the ideal alignment is for the blade to open a furrow directly ahead of the opener discs. As a check on coarse alignment, sight along the coulter blade center-line , the gap between the opener blades...

  • Page 63: Spacer Washers

    YP-425, 625, 825, & 1025-A3P Table of Contents Index Adjustments Row-Unit Opener Disk Adjustments 25 Series openers have three adjustments: 1. planting/seed depth 2. opener disc to disc clearance 3. gauge wheel/opener disk clearance (page 60) Setting Planting Depth Refer to Figure 58 The “T”...
  • Page 64 YP-425, 625, 825, & 1025-A3P Table of Contents Index Adjustments Side Gauge Wheel Adjustment Side Gauge Side Gauge Refer to Figure 61 and Figure 62 Wheel Wheel Disc-to-wheel angle and clearance ideally has the wheel Opener just touching the disk when the wheel is raised to Disks planting depth (is up against the stop set by the “T”...
  • Page 65 YP-425, 625, 825, & 1025-A3P Table of Contents Index Adjustments • If wheel does not fall freely, loosen hex-head bolt and slide wheel arm out just until wheel and arm move freely. Tighten hex-head bolt according to grade: inch Grade 5 bolt on 25 series: 75 foot-pounds (102 N•m).
  • Page 66 YP-425, 625, 825, & 1025-A3P Table of Contents Index Adjustments Seed Meter Setup and Adjustment There are adjustments for seed inlet, and choice of disks. There are no other adjustments, in particular no brush adjustments, at the meter. Meter Rain Cover The rain cover keeps side winds from unseating seed in disk pockets.
  • Page 67 YP-425, 625, 825, & 1025-A3P Table of Contents Index Adjustments Optimal Seed Pool Slopes The optimal seed slope is one that results in the most consistent seeding, with minimal skips and doubles. The column at right has photographs of pool slopes found to 8:00 be optimal for representative seeds.
  • Page 68 YP-425, 625, 825, & 1025-A3P Table of Contents Index Adjustments ® Air-Pro Meter Disk Installation 1. Cross-check Seed Rate Chart data against part number/description molded into disks to be used. Population Risk: Use the same disk in all active rows. 2.
  • Page 69 YP-425, 625, 825, & 1025-A3P Table of Contents Index Adjustments Removing a Seed Disk Refer to Figure 74 1. Remove rain cover. If seed is present, close shutter to prevent more seed from entering meter. Attach funnel (page 82) or place a tarp under the row to collect seed.

  • Page 70: Row Unit Shank

    YP-425, 625, 825, & 1025-A3P Table of Contents Index Adjustments 1. Identify Rows to Shut Off On twin-row planters, openers are installed with short and long opener mounts. If locking up unused rows of a twin-row planter, shut off the rear (long mount) rows. On single-row planters with mid-length mounts, any rows may be locked up.

  • Page 71: Sprocket Indexing

    YP-425, 625, 825, & 1025-A3P Table of Contents Index Adjustments 1. Raise the planter. Although this adjustment can be made with the planter lowered, the springs will be in tension, and will require more effort. The extra force may also damage tools. 2.

  • Page 72: Seed-Lok

    YP-425, 625, 825, & 1025-A3P Table of Contents Index Adjustments Seed Firmer Adjustments Series 25 row units include a standard seed flap, and accept one of two optional seed firmers (which may be included in your selected opener bundle). Row unit disk blades may be sharp. Use caution when making adjustments in this area.

  • Page 73: Stagger

    YP-425, 625, 825, & 1025-A3P Table of Contents Index Adjustments Press Wheel Adjustment The press wheels close the furrow which gently presses the soil over the seed to ensure good seed-to-soil contact for even emergence. Higher press wheel down pressures reduce the down To provide consistent seed firming, the press wheels are force on the main row unit shank components, such as free to move downward from their normal operating...
  • Page 74 Press Wheel Centering If press wheel adjustments do not provide satisfactory (View from beneath opener) furrow closing, your conditions may require alternate press wheels. A variety of wheel assemblies are available. Consult your Great Plains dealer. 2018-07-23 Table of Contents Index 401-652M...
  • Page 75 YP-425, 625, 825, & 1025-A3P Table of Contents Index Troubleshooting Troubleshooting Planting Rate Problems When starting up with a new planter, a new crop or a Suggested Furrow Check: new population it is important to physically double check Plant a short distance and dig seeds, or run with the what the monitor is reporting in the cab by digging seeds.

  • Page 76: Seed Pool

    YP-425, 625, 825, & 1025-A3P Table of Contents Index Troubleshooting Seed Pool Troubleshooting Figure 83 29986 ® Rear Cross-Section of Air-Pro Meter in Normal and Row-Failed Conditions Normal: Filled Bridging: Inlet Shutter Bridging: Seed Hose Empty Hopper A bridge at the shutter is Oversize matter in seed has No seed arriving from box.
  • Page 77 YP-425, 625, 825, & 1025-A3P Table of Contents Index Troubleshooting ® Magnehelic Gauge Troubleshooting ® If the Magnehelic gauge does not read zero with the fan off, inspect the gauge, and re-zero as needed. Problem Cause Solution Non-zero Re-zero per Zero drift with fan off instructions below...

  • Page 78: Seed Disk

    YP-425, 625, 825, & 1025-A3P Table of Contents Index Troubleshooting Population Troubleshooting Charts Population Too Low Problem Cause Solution Using Seed Rate Manual, check: Overall Low • Population seed disk selection, Incorrect seed rate • Range/Transmission sprocket setup, and • tire size and inflation.
  • Page 79 YP-425, 625, 825, & 1025-A3P Table of Contents Index Troubleshooting Population Too Low Problem Cause Solution Shutter opening too narrow - starving meter of Adjust shutter to higher setting. seed (low seed pool) Population, Single Row Re-adjust for shutter bridging (page 63). Meter starvation due to bridging at shutter If seed is treated, increase seed lubricant.

  • Page 80: Seed Tube Sensor

    YP-425, 625, 825, & 1025-A3P Table of Contents Index Troubleshooting Population Too High Problem Cause Solution With planter lowered, check radar speed sensor angle per Overall High (Option) Incorrect radar speed sensor angle. ® DICKEY-john recommendations. Population, cont. Doubles due to incorrect disk for crop or seed Use recommended disk for crop and seed size.
  • Page 81 YP-425, 625, 825, & 1025-A3P Table of Contents Index Troubleshooting Population Related Problem Cause Solution Leave fan running; meter pressurization must be maintained during Skips and Bare Fan was turned off at turns turns, or seed will fall out of disk pockets. Spots After Turns Check tractor capability against requirements (page 101).

  • Page 82: Press Wheel

    YP-425, 625, 825, & 1025-A3P Table of Contents Index Troubleshooting General Troubleshooting Problem Cause Solution Excessive field speed. Reduce field speed. Uneven seed depth Planting conditions too wet. Wait until drier weather. Incorrect coulter depth setting. See coulter manual or set unit mounted coulter. Excessive or improper row unit down See “Row Unit Down Pressure”...
  • Page 83 YP-425, 625, 825, & 1025-A3P Table of Contents Index Troubleshooting General Troubleshooting Problem Cause Solution CFM Switch must be set to “Marker”. Set tractor remote Hydraulic Marker/Fold switch set to Fold. circuit to Neutral or Float before operating switch. marker functioning On a planter with optional Auxiliary Hydraulics, selector valve must improperly, or...
  • Page 84 YP-425, 625, 825, & 1025-A3P Table of Contents Index Maintenance and Lubrication Maintenance and Lubrication Maintenance Proper servicing and maintenance is the key to long implement life. With careful and systematic inspection, you can avoid costly maintenance, downtime, and repair. Always turn off and remove the tractor key before making any adjustments or performing any maintenance.
  • Page 85 YP-425, 625, 825, & 1025-A3P Table of Contents Index Maintenance and Lubrication Material Clean-Out When planting is completed, it is commonly the case that some seed remains. There may be seed in the hoppers, hose lines, and meters. Possible Dust and Chemical Residue and Fume Hazards: Refer to Figure 86 Wear a respirator, and any other protective equipment specified by the seed supplier and/or seed treatment supplier.

  • Page 86: Storage

    YP-425, 625, 825, & 1025-A3P Table of Contents Index Maintenance and Lubrication Meter Clean-Out Refer to Figure 88 The 817-811C seed collection accessory (funnel ) may be attached to the housing of the seed meter, freeing your hands for other tasks during clean-out. ...
  • Page 87 YP-425, 625, 825, & 1025-A3P Table of Contents Index Maintenance and Lubrication Meter Brush Maintenance Possible Chemical Hazard: Wear a respirator for brush cleaning. Brushes will have talc and graphite residue, and may have residues of hazardous seed treatments. Refer to Figure 89 A HEPA vacuum cleaner is recommended for brush cleaning.
  • Page 88 YP-425, 625, 825, & 1025-A3P Table of Contents Index Maintenance and Lubrication Meter Brush Replacement Consult the Parts manual (401-652P) for current replacement part numbers. Refer to Figure 90 Tufted Brush Replacement 1. Remove and save both 10-24 hex head cap screws and Nylock nuts (not shown).

  • Page 89: Speed Sensor

    YP-425, 625, 825, & 1025-A3P Table of Contents Index Maintenance and Lubrication Seed Disk Maintenance Refer to Figure 92 When removing seed disks, inspect them for wear and damage. If there is any seed dust or treatment build-up in the cell pockets , or along the raised wiper ridges clean the disks and re-inspect.
  • Page 90 YP-425, 625, 825, & 1025-A3P Table of Contents Index Maintenance and Lubrication Hydraulic Maintenance As with any hydraulic system, contamination is the most common cause performance problems pre-mature wear. Make a special effort to properly clean quick couplers prior to attaching the hoses to tractor, and never let them fall to the ground.
  • Page 91 (not visible in Figure), and swing back. The shear bolt is a hex head cap screw, -18 x inch Grade 5, Great Plains part number 802-012C, plus a -18 lock nut, Great Plains part number 803-011C.
  • Page 92 YP-425, 625, 825, & 1025-A3P Table of Contents Index Maintenance and Lubrication 3. Measure the current slack Acting at a right angle to the chain span at the center of the span, deflect the chain in both directions. The slack is the distance of the movement. 4.

  • Page 93: Side Wheel

    YP-425, 625, 825, & 1025-A3P Table of Contents Index Maintenance and Lubrication Spreaders and Scrapers  Applies to all row unit Series.  It is normal for the blade spreader to have some looseness in the holder and between the blades. Refer to Figure 99 Some looseness is required for proper operation.
  • Page 94 YP-425, 625, 825, & 1025-A3P Table of Contents Index Maintenance and Lubrication Seed Flap Replacement Refer to Figure 101 To replace a seed flap , use a needle nose pliers or similar tool to grasp “T” top of flap. Pull upward to pull flap up out of metal bracket Push new seed flap down through metal bracket...

  • Page 95: Gauge Wheel

    YP-425, 625, 825, & 1025-A3P Table of Contents Index Maintenance and Lubrication Lubrication Intervals (operating hours) Multi-purpose Multi-purpose Multi-purpose Inspection at which service oil lubricant grease lubricant spray lubricant is required 34208 Opener Side Wheel Bushing On both sides of each row-unit (2 per row) Type of Lubrication: Grease Quantity: Until grease emerges 21960...
  • Page 96 YP-425, 625, 825, & 1025-A3P Table of Contents Index Maintenance and Lubrication Chain: Contact Drive As Required 1 chain Type of Lubrication: Chain Lube Quantity = Coat thoroughly  Lubricate chains any time there is a chance of moisture, and when being stored at the end of the planting season.

  • Page 97: Row Cleaner

    YP-425, 625, 825, & 1025-A3P Table of Contents Index Maintenance and Lubrication Chain: Transmission Drive As Required 1 chain Type of Lubrication: Chain Lube Quantity = Coat thoroughly  Lubricate chains any time there is a chance of moisture, and when being stored at the end of the planting season.
  • Page 98 YP-425, 625, 825, & 1025-A3P Table of Contents Index Maintenance and Lubrication Gauge Wheel Hubs Seasonal 1 grease fitting each spindle; 4 total Type of Lubrication: Grease Quantity: Until resistance is felt 29883 Markers: Disk Hub Seasonal 4 bearings; 2 races each marker Type of Lubrication: Grease Quantity: Re-pack 16489...

  • Page 99: Seed Lubricant

    YP-425, 625, 825, & 1025-A3P Table of Contents Index Maintenance and Lubrication Seed Lubricants To maximize performance of Great Plains metering systems, it is imperative to use “Ezee Glide Plus” or Bayer Seed Fluency Agent. Ezee Glide Plus Talc+Graphite Mix 821-069C...

  • Page 100: Sequence Valve

    YP-425, 625, 825, & 1025-A3P Table of Contents Index Options Options Dual Sequenced Markers A marker system includes hydraulic cylinder, marker arm and mount for left and right side, plus an automatic sequence valve that controls which side activates, and at what speed.
  • Page 101 YP-425, 625, 825, & 1025-A3P Table of Contents Index Options Row-Mounted Accessories Lock-Up Pins If rows are shut off, you can reduce unnecessary wear on the unused row units by locking them up. Twin-row planters include, as standard, one lock-pin per rear row. For replacement pins, or for other planter models, order one per row unit locked-up.
  • Page 102 YP-425, 625, 825, & 1025-A3P Table of Contents Index Options Unit-Mounted Disk Coulters Optional unit-mount disk coulters are available with 15 inch fluted or 15 inch turbo blades. For complete coulters, with unit mount and blade the selection includes: Description Part Number 4 mounts, 15 inch fluted (4 row) 204-171A...
  • Page 103 YP-425, 625, 825, & 1025-A3P Table of Contents Index Options Seed Meter Disks ® Air-Pro meters accept a variety of seed disks, plus a special blank disk for row shut-off. Choices include: Meter Disks Part No. Canola, 150 Cell 837-148C Canola, 250 Cell 817-991C Corn, 024 Cell (Large, Flat)
  • Page 104 Additional wheels are available, and all may be field-installed. This manual does not list kit part numbers as the available wheels are often region-specific. Consult your Great Plains dealer. For operations, see: 29331 “Press Wheel Adjustment” on page 69.

  • Page 105: Three-Point

    YP-425, 625, 825, & 1025-A3P Table of Contents Index Appendix A - Ref. Info. Appendix A - Ref. Info. Specifications and Capacities YP425A3P Single-Row Data Model YP425A3P YP425A3P YP425A3P YP425A3P YP425A3P -0470 -0430 -0436 -0438 -0440 Row Count Row Spacing 70.0 cm 30 inches 36 inches...

  • Page 106: Seed Monitor

    YP-425, 625, 825, & 1025-A3P Table of Contents Index Appendix A - Ref. Info. YP425A3P Twin-Row Data YP425A3P YP425A3P YP425A3P YP425A3P -08TR -0836 -0838 -0840 Model 8 (4 twin) Row Count 30 in. 36 in. 38 in. 40 in. Row Spacing 15 ft.
  • Page 107 YP-425, 625, 825, & 1025-A3P Table of Contents Index Appendix A - Ref. Info. YP625A3P Single-Row Data YP625A3P YP625A3P YP625A3P YP625A3P YP625A3P -0670 -0630 -0636 -0638 -0640 Model Row Count 70.0 cm 30 inches 36 inches 38 inches 40 inches Row Spacing 458.5 cm 15 ft.
  • Page 108 YP-425, 625, 825, & 1025-A3P Table of Contents Index Appendix A - Ref. Info. YP625A3P Twin-Row Data YP625A3P YP625A3P YP625A3P YP625A3P -12TR -1236 -1238 -1240 Model 12 (6 twin) Row Count 30 inches 36 inches 38 inches 40 inches Row Spacing 20 ft.
  • Page 109 YP-425, 625, 825, & 1025-A3P Table of Contents Index Appendix A - Ref. Info. YP825A3P Single-Row Data YP825A3P YP825A3P YP825A3P YP825A3P YP825A3P -0870 -0830 -0836 -0838 -0840 Model Row Count 70.0 cm 30 inches 36 inches 38 inches 40 inches Row Spacing 25 ft.
  • Page 110 YP-425, 625, 825, & 1025-A3P Table of Contents Index Appendix A - Ref. Info. YP825A3P Twin-Row Data YP825A3P YP825A3P YP825A3P YP825A3P -16TR -1636 -1638 -1640 Model 16 (8 twin) Row Count 30 inches 36 inches 38 inches 40 inches Row Spacing 25 ft.
  • Page 111 YP-425, 625, 825, & 1025-A3P Table of Contents Index Appendix A - Ref. Info. YP1025A3P Single-Row Data Model YP1025A3P Row Count Row Spacing 30 inches Width, no Markers 25 ft. 10.5 in. Width, with Markers 27 ft. 1 in. Span (between end rows) 270 inches Swath (Channel width) 300 inches...

  • Page 112: Transport

    YP-425, 625, 825, & 1025-A3P Table of Contents Index Appendix A - Ref. Info. Torque Values Chart Bolt Head Identification Bolt Head Identification Bolt Bolt 10.9 Size Size Grade 2 Grade 5 Grade 8 Class 5.8 Class 8.8 Class 10.9 ft-lb ft-lb ft-lb...
  • Page 113 YP-425, 625, 825, & 1025-A3P Table of Contents Index Appendix A - Ref. Info. Hydraulic Diagrams Fan Hydraulics (YP3P425A S/N B1004M-) (YP3P625A S/N B1006P-) (YP3P825A S/N B1007R-) 29781 2018-07-23 Table of Contents Index 401-652M...
  • Page 114 YP-425, 625, 825, & 1025-A3P Table of Contents Index Appendix A - Ref. Info. Fan Hydraulics (YP3P425A S/N B1005M+) (YP3P625A S/N B1007P+) (YP3P825A S/N B1008R+) (YP1025A3P S/N C1002U+) A Port B Port 31754 2018-07-23 Table of Contents Index 401-652M...
  • Page 115 YP-425, 625, 825, & 1025-A3P Table of Contents Index Appendix A - Ref. Info. Marker Hydraulics (Option) 29940 2018-07-23 Table of Contents Index 401-652M...
  • Page 116 YP-425, 625, 825, & 1025-A3P Table of Contents Index Appendix A - Ref. Info. Chain Routing Legend: See also “Chain Maintenance” on page 87. Sprocket or idler Tooth count Chain Pitch count Ground Drive Arm Chain Direction of chain in motion 29885 2018-07-23 Table of Contents...
  • Page 117 YP-425, 625, 825, & 1025-A3P Table of Contents Index Appendix A - Ref. Info. Transfer Shaft and Range Chains Range Sprocket: 18T, 19T, 20T, 2@25T, 30T, 36T 29893 2018-07-23 Table of Contents Index 401-652M...

  • Page 118: Transmission Sprocket

    YP-425, 625, 825, & 1025-A3P Table of Contents Index Appendix A - Ref. Info. Transmission Chain Range Sprocket: 18T, 19T, 20T, 2@25T, 30T, 36T Transmission Sprockets: 17T, 19T, 2@23T, 24T, 25T, 26T, 27T, 28T 29884 2018-07-23 Table of Contents Index 401-652M...
  • Page 119 YP-425, 625, 825, & 1025-A3P Table of Contents Index Appendix A - Ref. Info. 25AP Final Meter Drive Legend: Sprocket or idler Tooth count Chain Pitch count Direction of chain in motion 29619 25P: Meter Drive (Front type)  No idlers on mount. top chain passes over single idler on shank be sure to reconnect idler spring 29621...
  • Page 120 Install press wheel assemblies (page 117). c. Engage ground drive spring (page 117). The planter mainframe includes shipping stands which are returned to Great Plains after the tongue is attached. Mount Ground Drive Wheel The ground drive wheel is shipped loose. It must be bolted to the hub.
  • Page 121 YP-425, 625, 825, & 1025-A3P Table of Contents Index Appendix B - Pre-Delivery Install Press Wheel Assemblies To meet highway clearance requirements, press wheel arms and wheels may not be factory-installed. Refer to Figure 103 4. Remove and save the -13 x 1 inch hex head bolt and washer at the back of an incomplete row...

  • Page 122: Seed

    Information” on page 1. Perform Appendix B tasks first. Some of these items may already have been done by your Great Plains dealer: 2. Check that all working parts are moving freely, bolts are tight, and cotter pins are spread.

  • Page 123: Single-Row

    YP-425, 625, 825, & 1025-A3P Table of Contents Index Appendix C - Initial Setup Initial Marker Setup (Option) Marker Speed Adjustment Overhead Sharp Object and Crushing Hazards: Never allow anyone near the planter when folding or unfolding the markers. You may be injured if hit by a folding or unfolding marker.

  • Page 124: Outside

    YP-425, 625, 825, & 1025-A3P Table of Contents Index Appendix C - Initial Setup 3. Find the suggested initial marker Extension in the table on this page.  When using altered twin-row spacings, marker extensions are different for each side. Refer to Figure 108 and Figure 109 4.
  • Page 125 YP-425, 625, 825, & 1025-A3P Table of Contents Index Appendix C - Initial Setup Marker Extension Table Marker Extension Marker Extension Planter Spacing Planter Spacing Model Used Model Used Left Right Left Right YP425A3P Standard: YP625A3P Standard: 175.0 cm 133.0 in. (337.8 cm) -0470 70 cm Single -0638...

  • Page 126: Scraper Installation

    YP-425, 625, 825, & 1025-A3P Table of Contents Index Appendix C - Initial Setup 122-278S Scraper Installation Optional carbide disc scrapers are not factory installed. Start with row 1 (left-most row unit).  If a Keeton seed firmer is also installed, see the Parts Manual for assembly details.
  • Page 127 Great Plains (a division of Great Plains Manufacturing, Inc.) warrants to the original purchaser that this Great Plains unit will be free from defects in material and workmanship for a period of one year from the first use date when used as intended and under normal service and conditions for personal use;...
  • Page 128 Table of Contents Index Table of Contents Index...
  • Page 129 YP-425, 625, 825, & 1025-A3P Cover Table of Contents Index Index chamber ..........32 danger check valve, fan ......34 chemical .........8 ABS ............79 checklists warning adjustments ........43 air system ........40 high pressure fluid hazard ..8 Air Design .........120 electrical ........14 marker ........9 air release screen .......37 ending planting ......
  • Page 130 YP-425, 625, 825, & 1025-A3P Cover Table of Contents Index furrow ..........52 lid, hopper ......25 furrow check ........48 lift assist cylinder locks ....... 65 opener disk ........51 lift, effect on pressure ......36 operation light no-till ........... 10 gap, speed sensor ......83 marker ........

  • Page 131: Table Of Contents

    YP-425, 625, 825, & 1025-A3P Cover Table of Contents Index respirator ..........2 sensor, seed tube ......32 air system elements ....32 return line, fan ...... 17 sequence valve ....38 coulter blade mount .....55 reverse fan ........34 serial number ........11 document family ......10 reversed fan ........
  • Page 132 YP-425, 625, 825, & 1025-A3P Cover Table of Contents Index 207-222A, row cleaner ....... 95 817-967C seed disk ......97 207-223A, row cleaner ....... 95 817-991C seed disk ......97 yoke spring ........19 207-224A, row cleaner ....... 95 818-055C, reflector .......6 YP425A3P ......
  • Page 133 Table of Contents Index Table of Contents Index...
  • Page 134 Great Plains, Mfg. 1525 E. North St. P.O. Box 5060 Salina, KS 67402...

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