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OPERATING
MANUAL
2021
DEFOLIATOR
th
2800 7
Avenue North
Fargo, ND 58108
Phone: (701) 232-4199
Fax: (701) 234-1716
Www.amitytech.com
MANUAL PART NO: 306436
RELEASE DATE: 01/2021
DESIGNED AND MANUFACTURED IN USA

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Summary of Contents for Amity Technology 3750

  • Page 1 OPERATING MANUAL 2021 DEFOLIATOR 2800 7 Avenue North Fargo, ND 58108 Phone: (701) 232-4199 Fax: (701) 234-1716 Www.amitytech.com MANUAL PART NO: 306436 RELEASE DATE: 01/2021 DESIGNED AND MANUFACTURED IN USA...
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  • Page 3: Warranty

    EFFECTIVE FOR EQUIPMENT RETAILED AND DELIVERED AFTER JUNE 1, 2020 WHAT IS WARRANTED Amity Technology warrants its new equipment to be free of defects in material and workmanship at time of delivery to the first retail pur- chaser, renter, or lessee. Amity Technology warrants any new or unused part which is manufactured by Amity Technology for use in an Amity Technolo- gy machine, jointly referred to as “Products”, whether such Product is purchased through an authorized Amity Technology deale r or directly from...
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  • Page 5: Table Of Contents

    TABLE OF CONTENTS WARRANTY............... ii 6.0 OPERATING THE HARVESTER........6-1 TABLE OF CONTENTS……..........iv-v 6.1 Start Up…..............6-1 6.2 Flail Height……………….…..........6-2 1.0 INTRODUCTION…………..........1-1 6.3 Field Operating Speed..........6-2 1.1 General Information……………........1-1 6.4 Turning Radius............6-3 1.2 Serial Number………..........1-1 6.5 Break-in Period............6-3 6.6 Field Cleaning............6-3 2.0 SAFETY……………............2-1 6.7 Flail Tubes……………..........6-3 2.1 Recognizing Safety Information in Manual……..2-1 6.7.1 Adjustable 3...
  • Page 6: Table Of Contents

    TABLE OF CONTENTS 8.0 TRANSPORTATION...........8-1 8.1 Warning Lights............8-1 8.2 Preparing for Transport……........8-1 9.0 CLEANING…..............9-1 9.1 Row Finder..............9-1 9.2 Scalpers…………………………..…........9-1 9.3 Top Doors & Interior Walls........9-1 9.4 Gearbox Enclosure..........9-2 10.0 STORAGE..............10-1 10.1 End of Season............10-1 10.2 Beginning of Season..........10-1 11.0 LUBRICATION AND MAINTENANCE.....11-1 11.1 General Maintenance Information………..…………11-1 11.1.1 Grease…………………………………………………………..11-1 11.2 U-Joints……………………………………………………………11-1...
  • Page 7: Introduction

    1.0 INTRODUCTION 1.1 General Information Read this manual carefully to learn how to operate and service your machine correctly. Failure to read this manual can result in personal injury or equipment damage. This manual is a permanent part of your machine and should remain with the machine when you sell it. Measurements in this manual are given in both customary U.S.
  • Page 8: Safety

    2.0 SAFETY 2.1 Recognizing Safety Information in Manual Figure 2-1 is the safety-alert symbol. When you see this symbol on your machine or in this manual, be alert to the potential for personal injury. Follow recommended precautions and safe operating practices. 2.2 General Safety Figure 2-1: Safety-Alert Symbol You are responsible for the safe operation and maintenance of your Amity implement.
  • Page 9: Maintenance And Operating Safety

    7. Annually review safety guidelines with all operators. 8. Wear suitable ear protection for prolonged exposure to excessive noise. Think SAFETY! Work SAFELY! 2.3 Maintenance and Operating Safety 1. Read and understand all information contained in the Operator’s Manual regarding maintenance, adjustment, and operation of the machine.
  • Page 10: Hydraulic Safety

    2.4 Hydraulic Safety 1. Always place all tractor hydraulic controls in neutral before dismounting. 2. Make sure that all components in the hydraulic system are kept in good condition and are clean and tight. 3. Replace any worn, cut, abraded, flattened or crimped hoses and metal lines. 4.
  • Page 11: Safety Decals

    2.6 Safety Decals The types of decals on the equipment are shown in the illustration below. Proper safety requires that you familiarize yourself with the various safety decals, the type of warning, and the area, or particular function related to that area, that requires your safety awareness. REMEMBER: If safety decals have been damaged or removed, become illegible, or parts are replaced without decals, then new decals must be applied.
  • Page 12 PN: 9971015 PN: 997859 Hazard: Falling off Machine Hazard: General Safety Alert Avoidance: Do not climb on the machine. Avoidance: Shut off engine and remove key before performing maintenance or repair work. PN: 303277 PN: 997861 Hazard: Falling off Machine Hazard: General Safety Alert Avoidance:...
  • Page 13 PN: 303268 PN: 997863 Hazard: Rotating Part Hazard: Electrical Shock Avoidance: Keep clothing, yourself, and oth- Avoidance: Keep the machine clear of over- ers clear. head electrical power lines. PN: 9971025 PN: 311206 Hazard: Crushing from Above Hazard: Whole Body Entanglement Avoidance: Stay clear of this area while en- Avoidance:...
  • Page 14 PN: 311207 PN: 997841 Hazard: Pinch Point Hazard: Crushing from Moving Parts Avoidance: Keep hands clear of any moving Avoidance: Stay clear of this area while en- parts around the pinch point. gine and machine are operating. PN: 997853 PN: 997857 Hazard: Negative Tongue Weight Hazard:...
  • Page 15: Specifications

    3.0 SPECIFICATIONS 3.1 Defoliator Specifications Table 3-1: Defoliator Specifications Model: 3750 3550 3450 3700 3500 3300 3200 Weight 15,200 lbs 13,200 lbs 11,500 lbs 13,600 lbs 12,000 lbs 10,000 lbs 9,800 lbs (Approx.)** [6,895 kg] [5,987 kg] [5,216 kg] [6,169 kg]...
  • Page 16: Hydraulic Flow Rates

    NOTE: Values listed are a good starting point; however, flow rates should be fine-tuned to allow the smallest flow rate possible while still providing enough power to run the defoliator properly. 3.4 Tractor Specifications Table 3-4: Tractor Specifications Model: 3750 3550 3450 3700 3500...
  • Page 17: Rotor Design

    3.5 Rotor Design Figures 3-1, 3-2, and Table 3-5 below show drum rotational speeds, directions and configurations for Amity Defoliators DRUM #1 DRUM #2 DRUM #3 Figure 3-1: Rubber Front Drum DRUM #1 DRUM #2 DRUM #3 Figure 3-2: Steel Front Drum Table 3-5: Rotor Design Drum 00 Series...
  • Page 18: Preparation

    4.0 PREPARATION 4.1 Tractor Preparation 4.1.1 Adjusting the Drawbar: It is recommended that the trac- tor drawbar be set to the shortest position and be within the given range (in accordance with ANSI/ASABE AD6489-3) to maintain the integrity of the drive system. Dimensions are shown in Figure 4-1.
  • Page 19: Defoliator Preparation

    4.2 Defoliator Preparation 4.2.1 Flail Spacing: Verify the spacing matches the spacing of the planted crop as shown in Figure 11. A=B/2 Center of frame to center of flail basket B=Row spacing Figure 4-4: Flail Spacing 4.2.2 Scalpers: In addition to Flail baskets Scalpers also need to be correctly positioned for row spac- ing and should be adjusted to match if they are not already.
  • Page 20: Attaching And Detaching

    5.0 ATTACHING AND DETACHING 5.1 Attaching Hydraulic and Electrical Systems Defoliators are available with ISO couplers or metric adapters. If the hydraulic attachments on your defoliator do not fit the tractor, contact your Amity dealer. CAUTION: To avoid injury from escaping fluid under pressure, relieve the pressure in the system before disconnecting or con- necting hydraulic or other lines.
  • Page 21: Attaching Pto Driveline

    5.3 Attaching PTO Driveline CAUTION: To avoid bodily injury or death, shut off the tractor and lower the machine to the ground before attaching the PTO driveline. IMPORTANT: Keep the driveline and powershaft splines clean of dirt, paint, and debris. 1.
  • Page 22: Startup

    6.0 OPERATING THE DEFOLIATOR 6.1 Startup 1. Lubricate the machine per the schedule outlined in the maintenance section. 2. Perform pre-operation check of the defoliator. 3. Ensure that you, bystanders, and all objects are clear of the defoliator before starting. 4.
  • Page 23: Flail Height

    6.2 Flail Height The single biggest factor in quality defoliator is properly setting the flail height of drums #2 and #3 of your Amity defoliator. Flail height will vary with soil and crop conditions. One inch (2.54 cm) be- low the crown of the average beet is a good starting point. Actual flail height is best determined by checking the defoliation results in several areas after defoliating for 50 feet (15 meters).
  • Page 24: Turning Radius

    6.4 Turning Radius Turning at the end of the field while pulling the defoliator requires a wide area. One way to accom- modate the large turning radius is to plant headland rows. Amity recommends a minimum of 48 headland rows (22” [56 cm] spacing) on each end of the field. •...
  • Page 25: Adjustable 3 Rd Drum (50 Series)

    6.7.1 Adjustable 3 Drum (50 series): The purpose of the adjustable 3 flail tube in the 50 series de- foliator is to be able to run the 1 drum higher specifically designed for crops with poor emergence where the highest beet and lowest beet vary greatly in height. In such a situation running the defolia- tor level and low enough to clean all beets the 1 drum would cut the tops off many of the higher beets.
  • Page 26: Scalpers (Option)

    6.10 Scalpers (option): Scalpers are an option on Amity defoliators that remove the very top of the beet helping to ensure complete petiole removal. Scalper are designed to ride on the crown of the beet to follow its changing height. Because of this they need to be raised in addition to the row finder at the field end just as the beets are ending.
  • Page 27: Machine Shutdown

    6.12 Machine Shutdown To ensure maximum life of the machine, follow this procedure when stopping: Raise the defoliator off the beets with the PTO still engaged. (If equipped with AHC, activate end row mode) While PTO is running at full speed disengage tractor PTO. The corner gearbox on all Amity defolia- tors has an over-running clutch built in and will allow the defoliator to slowly come to a stop well after the PTO drive on the tractor has stopped.
  • Page 28: Adjustments

    7.0 ADJUSTMENTS Before performing any adjustments first shift to park, disengage PTO, lower machine to ground, relieve hydraulic pressure, stop engine, remove ignition key, and wait for all moving parts to stop before adjusting. 7.1 Leveling To obtain optimal performance of the defoliator, the machine must be level from left to right while defoliating.
  • Page 29: Hydraulic Strut Lift (Option)

    7.1.2 Hydraulic Strut Lift (option): (Rear struts equipped with rephasing cylinders.) 1. Move the defoliator on to a flat and level floor for accurate measurements. 2. Lower the defoliator front hitch cylinders to approximate operating height. 3. Check tire pressure to ensure both sides are correctly inflated.
  • Page 30 7.2.2 Field Height adjustment and AHC adjustments 1. With defoliator set to initial height estimate follow section 6.1 Start Up for beginning a new field. 2. Run the defoliator for 25-50 feet (7.5-15 m) at a slow speed. 3. Following adjustment safety procedures, stop and raise the defoliator. 4.
  • Page 31 7.2.3 Flail Size Drum 1 height as shown in Figure 24 above is designed to run higher than the rear drums 2&3. This is based on its function which is to remove the majority of the beet leaves leaving only a few petioles or leaf stems for the 2 and 3 drums to remove from the crown of the beet.
  • Page 32: Loose Beets

    7.2.6 Loose Beets In some conditions beets may be knocked loose from the ground which prevents them from being harvested. The best way to minimize this is to raise the flail height as high as possi- ble while still removing the petioles. This will provide less aggressive impacts to the beet. Adjusting travel speed doesn’t help much and in some cases will be worse for this condition as the tangential velocity of the flails is much greater than any fractional change from reducing travel speed.
  • Page 33: Row Finder

    12. Tighten the 4 5/8” bolts locking the hanger plate into place. 13. Repeat steps 9-12 for the outer plate shown in Figure 14. Run the defoliator with the updated drum 3 height and recheck that bolts are tight after 1 hour of opera- tion.
  • Page 34: Row Spacing

    7.4 Row spacing Row Spacing: Normally row spacing is set once from the factory and will not need to be changed unless the cus- tomer changes crop spacing. A=B/2 Center of frame to center of flail basket B=Row Spacing Figure 7-10: Row Spacing 7.4.1 Flail spacing Steel Flail adjustment: Amity Steel flails are used on the front drum only and spin at 1000 RPM and are balanced from the...
  • Page 35: Wheel Spacing

    7.4.2 Wheel Spacing The rear struts spacing are set at the factory and are designed to be adjustable to fit 18 to 44 inch (45 to 112 cm) row spacing depending on the strut style equipped. Minimum row and crop damage will be done if the tires are set to track in the center of the rows.
  • Page 36: Strut Spacing

    7.4.3 Strut Spacing Strut spacing is set at the factory but can be adjusted to avoid planter or sprayer tracks in your fields, or if your operation changes row widths. Rear struts should be spaced to avoid running in planter tracks when possible. Often it is not possible to avoid planter or sprayer tracks in which case at least one tire should be off the tracks from the planter or sprayer and the rear struts moved out as wide as practical.
  • Page 37: Scalpers

    7.6 Scalpers Scalpers are designed to remove the last of the petioles from the beet and a small portion of the crown reduc- ing impurities in beet piles. Properly setting up scalpers is critical in their performance. Baskets should be set so that they do not hit either the top or bottom limit of their operational range while defoliating.
  • Page 38: Knives

    7.6.1 Knives Scalper knives should be set so that they remove a slice off the crown on the beet that is 1.5-2 inch (4-5 cm) in diameter. Excess of this amount will result in lower tons per acre yields. Properly setting scalpers is critical in optimizing your defoliation job.
  • Page 39: Bar Height

    7.6.2 Bar height The Amity scalper bar has two standard mounting positions as shown in the figures below. The bar height should be set to ensure the scalper baskets cannot reach the maximum or minimum stops and instead operate smoothly in the range between them. The scalper bar is set in the central posi- tion from factory.
  • Page 40 Figure 7-17: Corresponding Bolting Locations to Keep Scalpers Level 7-13...
  • Page 41: Floating Hitch

    7.7 Floating Hitch Proper setup is critical for the Floating Hitch or Floating Struts to function properly. Because every tractor model’s hydraulics vary between brands and models a one-time initial set-up must be done with the tractor model it will be operated with. 1.
  • Page 42: Torque Chart

    7.8 Torque Chart Table 7-1: Torque Chart Size (A) Grade 5 Grade 8 Torque values listed are for coarse thread Stand Metric lb-ft lb-ft bolts, in general use only. Do not use these values if a different torque value or tightening ”...
  • Page 43: Active Height Control (Ahc)

    7.9 Active Height Control (AHC) Active Height Control is available on 00 or 50 series 12 row defoliators. When used properly and set correctly for varying conditions, AHC can automatically level the defoliator by using rear sensor bas- kets to measure the average heights of the beets during the AutoLevel functionality. 7.9.1 Setting up AHC Before operating AHC, follow these steps while observing the aforementioned safety instructions in section 2:...
  • Page 44: Operating And Adjusting Ahc

    7.9.2 Operating and Adjusting AHC When running AHC, you have the choice of two different modes: AutoLevel or Manual. AutoLevel will automatically adjust your rear cylinders based on reading from the rear baskets. Manual will allow you to set each cylinder to a locked in position. Details for each are below AutoLevel mode: 1.
  • Page 45 Manual mode: 1. Ensure you have run the necessary steps in 7.9.1 before operating. 2. Deselect the “AutoLevel” button on the options. It should appear as unsuppressed and gray. 3. Raise the rear sensor baskets if you are not scalping. Sensor baskets should remain raised when in Manual mode.
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  • Page 47: Transportation

    8.0 TRANSPORTATION 8.1 Warning Lights CAUTION: Prevent collisions between other road users, slow moving tractors with attachments or towed equipment, and self-propelled machines on public roads. Frequently check for traffic from the rear, especially in turns, and use turn signal lights or hand signals. Use headlights, flashing warning lights, and turn signals day and night.
  • Page 48: Cleaning

    9.0 CLEANING Cleaning is an important part of harvester maintenance. This section illustrates a few locations where mud will routinely build up and need to be cleaned. 9.1 Row Finder Row finder wands (A) and springs (B) must be cleaned routinely in order for the row finder to cor- rectly locate beets.
  • Page 49: Gearbox Enclosure

    9.4 Gearbox Enclosure The gearbox enclosure should be cleared of dirt and debris whenever driveline maintenance or inspection is performed. This will keep material clear of driveline seals and gearbox breather vents prolonging component life. Figure 9-4: Gearbox Enclosure...
  • Page 50: Storage

    10.0 STORAGE 10.1 End of Season 1. Thoroughly clean the defoliator inside and out. Debris and dirt will draw moisture and cause rust. 2. Inspect the defoliator for any damaged or worn components; repair or replace as needed. 3. Lubricate all grease fittings and run machine for five minutes to distribute lubricant. 4.
  • Page 51: Lubrication And Maintenance

    11.0 LUBRICATION AND MAINTENANCE 11.1 General Maintenance Information Perform each lubrication and service illustrated in this section at the beginning and end of each sea- son. IMPORTANT: The period for recommended lubrication and maintenance is based on normal condi- tions. Severe or unusual conditions may require more frequent lubrication or oil changes. IMPORTANT: The items listed separately from the lubrication chart and the servicing interval pages are of extra importance.
  • Page 52: Gearbox Oil Level

    11.3 Gearbox Oil Level Gearbox oil levels should be checked routinely and filled to line (A) shown in Figure 11-2. Side plugs (B) can be found on all gearboxes and the lower side plug is used to measure the correct fill level. When gearboxes are filled with the proper amount of oil, the level should be just below the threads of side plug (A).
  • Page 53: Breather Cleaning

    11.5 Breather Cleaning The breather must be able to vent atmospheric conditions during heating and cooling cycles of operation. If it cannot vent, oil will seep out seals and run low. Prolonged operation with low oil levels will damage the internal components. To clean the breather: Figure 11-3: Gearbox Breather 1.
  • Page 54: Flails

    11.7 Flails The position and condition of the rotation flails is crucial to the quality of the defoliator job done by the machine. The flails must be positioned exactly over the rows to optimally clean the foliage and tailing from the beets. All flails must be in good condition. Any missing flails could affect the balance of the rotor and lead to severe vibration.
  • Page 55: Rubber Flails

    11.7.2 Rubber Flails:. Row Spacing: Normally row spacing is set once from the factory and will not need to be changed unless the customer changes crop spacing. To set spacing: 1. Open defoliator top doors for access to flails. 2. Determine the required flail position by measuring from the center of the machine. 3.
  • Page 56: Servicing Intervals

    11.8 Servicing Intervals Before 1 Use: 1. Grease hitch, row finder, scalper baskets, U joints, and PTO driveline. 2. Check all gearbox oil levels. 2 Hours: 1. Inspect Defoliator and clean mud if necessary. 12 Hours: 1. Grease front hitch pivot, row finder and lift, steerable struts, drive couplers, hanger bearings. 2.
  • Page 57 11-7...
  • Page 58: Lubrication Chart

    11.9 Lubrication Chart Description Lubrication Type Frequency Quantity Number of Instances Front Hitch Pivot Multi-Purpose Grease 12 Hours 3-5 pumps Rowfinder & RF Lift Multi-Purpose Grease 12 Hours 1-2 pumps 3 to 5 Rear Struts Multi-Purpose Grease 12 Hours 2-3 pumps 2 to 4 Moly EP Grease NLGI Drive Couplers...
  • Page 59: Pto Driveline Servicing

    11.10 PTO Driveline Servicing The first lubrication interval should be 16 to 24 hours of operation after initial start-up. Then follow the schedule outlined in Table 8. NOTE: Lubricate all fittings with a good quality lithium soap compatible E.P. grease meeting the NLGI #2 specifications and containing no more than 1% molybdenum disulfide 11-9...
  • Page 60 NOTE: Replacement parts are not lubricated. They must be lubricated at the time of assembly. Use amounts listed above per location. Then, follow the above recommendations. Table 11-2: PTO Driveline Servicing Description Frequency Quantity Cross and Bearings 50 hours 5 pumps Telescoping Members 50 hours 8-10 pumps...
  • Page 61: Troubleshooting

    12.0 TROUBLESHOOTING PROBLEM CAUSE SOLUTION Beet tops not clean Defoliator height not properly set Verify defoliator height is correctly set; see section 7.0. This should be done every time a field, variety, or conditions change. Traveling too quickly Reduce travel speed until beets are satisfactorily clean.
  • Page 62 PROBLEM CAUSE SOLUTION Scalper does not properly Knives dull Sharpen knives or replace if worn. top beets Knife not properly set Adjust knife height and cut angle to have the correct depth and cut flat. Basket not properly set Adjust scalper bar height so basket has proper travel range for defoliator height.
  • Page 63 PROBLEM CAUSE SOLUTION Row finder leaking Fittings loose Tighten any loose fittings. Spool seals worn Rebuild or replace row finder valve. Rear lift cylinders leaking External oil leak Find the scource of the leak and repair down or replace leaking equipment. Strut lift tied to row finder circuit Strut lift cylinders connected to the row finder circuit will leak down if the row...
  • Page 64 After checking the entire drivetrain and determining that there are not issues, the shear bolt may be upgraded to a 7/16" GR 8 bolt to replace the 7/16" GR 5 that is standard (3750 only). Mud build-up under top Operating conditions Tough conditions will require doors additional cleaning.
  • Page 65: Appendices

    13.0 Appendices 13.1 Conversions 1 acre = 0.404 hectares 1 mph = 1.609 kph 1 acre = 43,560 square feet 1 mile = 1.609 km 1 inch = 2.54 cm 1 psi = 6.895 kPa 1 foot = 0.3048 m 1 GPM = 3.785 LPM 1 lb = 0.45359 kg 1 hp = 0.746 kw...
  • Page 66: Tools

    13.3 Tools Amity has the following tools available: Trantorque sockets (#59107, #59108, #64820) Trantorque wrench (#64320) 13.4 PTO Driveshaft Friction Clutch Setting To set the friction clutch to the correct setting after rebuilding simple torque the clutch plate down evenly in a star pattern until the spacer collar is just able to move, but not loose. The collar holds a set distance which sets the clutch level.
  • Page 67 13.6 Flail Tube to Gearbox Assembly and Removal Flail tubes include a rubber spacer to properly align gear depth when using the drive coupler. This rubber spacer ensures the flail tube is aligned properly on the mating gears of the gearbox shaft, drive coupler, and drive sleeve.
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