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Unverferth Orthman 8375 Manual

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Row Cultivator
Model 8375
Part No. L125-034

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  • Page 1 Row Cultivator Model 8375 Part No. L125-034...
  • Page 2 8375 CULTIVATOR — Introduction Foreword This symbol identifies important safety messages. When you see it, read the message that follows and be alert to the possibility of personal injury. Remember, safety instructions stated in this manual are for your protection. Read them carefully and follow them closely when working around or using this machine.

  • Page 3: Product Information

    Please fill out and retain this portion for your records. All products manufactured by Unverferth Mfg. Co., Inc. are warranted to be free from material and workmanship defects for one full year from time of consumer delivery. Your local dealer will gladly assist you with any warranty questions.

  • Page 4: Table Of Contents

    8375 CULTIVATOR — Introduction Table of Contents Foreword ............................2 Product Information ........................3 SECTION I Safety General Hazard Information ....................... 1-2 Safety Decals ..........................1-3 Following Safety Instructions ..................... 1-4 Before Servicing or Operating ....................1-4 During Operation ........................1-5 Before Transporting ........................1-5 During Transport .........................
  • Page 5 8375 CULTIVATOR — Introduction Table of Contents SECTION III Operations General Operation Information ....................3-2 Preparing Tractor ........................3-2 Preparing Cultivator ........................3-2 Bolts & Nuts........................3-2 Pins ............................3-2 Lubrication ........................... 3-2 Wing Folding Degree Adjustment....................3-3 Adjustable Wing Rest ......................... 3-4 90 Degree Folding Procedure ....................
  • Page 6 8375 CULTIVATOR — Introduction Table of Contents SECTION IV Maintenance Lubrication ..........................4-2 Mount and Parallel Linkage Disassembly and Assembly ............4-4 Front Wheel Unit Disassembly and Assembly ................4-6 Depth Band Coulter Front ....................4-6 Single Tire Front ........................4-8 Center Coulter Disassembly and Assembly ................
  • Page 7 8375 CULTIVATOR — Introduction Table of Contents SECTION V Parts Decals ............................5-2 Hitch Components ........................5-3 Bar Stand Components ......................5-4 Hitch Clamp Components ......................5-5 180 Degree Wing Rest Components ..................5-6 170 Degree Wing Rest Components ..................5-7 Adjustable Wing Rest Components ....................

  • Page 8: Section I

    — Safety 8375 CULTIVATOR SECTION I Safety General Hazard Information ....................... 1-2 Safety Decals ..........................1-3 Following Safety Instructions ..................... 1-4 Before Servicing or Operating ....................1-4 During Operation ........................1-5 Before Transporting ........................1-5 During Transport ......................... 1-5 Preparing for Emergencies......................1-6 Wearing Protective Equipment ....................

  • Page 9: General Hazard Information

    It is said that, “the best kind of a safety device is a careful operator.” We, at Unverferth Mfg. Co., Inc. ask that you be that kind of operator.

  • Page 10: Safety Decals

    — Safety 8375 CULTIVATOR Safety Decals • REPLACE LOST, DAMAGED, PAINTED, OR UNREADABLE DECALS IMMEDIATELY. IF PARTS THAT HAVE DECALS ARE REPLACED, ALSO MAKE SURE TO INSTALL NEW DECALS. THESE DECALS INFORM AND REMIND THE OPERATOR WITH OPERATIONAL INFORMATION AND SAFETY MESSAGES. C A U T I O N 1.

  • Page 11: Following Safety Instructions

    — Safety 8375 CULTIVATOR Following Safety Instructions • Read and understand this operator’s manual before operating. • All machinery should be operated only by trained and authorized personnel. • To prevent machine damage, use only attachments and service parts approved by the manufacturer. •...

  • Page 12: During Operation

    — Safety 8375 CULTIVATOR During Operation • Regulate speed to working conditions. Maintain complete control at all times. • Never service or lubricate equipment when in operation. • Use extreme care when operating close to ditches, fences, or on hillsides. •...

  • Page 13: Preparing For Emergencies

    — Safety 8375 CULTIVATOR Preparing for Emergencies • Keep a first aid kit and properly rated fire extinguisher nearby. • Keep emergency numbers for fire, rescue, and poison control personnel near the phone. Wearing Protective Equipment • Wear clothing and personal protective equipment appropriate for the job. •...

  • Page 14: Set Up

    — Set Up 8375 CULTIVATOR SECTION II Set Up General Set Up Information ....................... 2-2 Basic Set Up ..........................2-3 Hydraulic System ......................... 2-3 SMV Emblem ........................2-3 Light and Light Bracket Set Up ....................2-4 Outer Lights ......................... 2-4 Inner Lights .........................

  • Page 15: General Set Up Information

    — Set Up 8375 CULTIVATOR General Set Up Information This section contains all of the instructions required for the complete assembly of the cultivator. For your safety, and the safety of others, use proper tools and equipment and always use safe working procedures.

  • Page 16: Basic Set Up

    — Set Up 8375 CULTIVATOR Basic Set Up Due to shipping requirements and various dealer-installed options, some initial implement set up will be required after it arrives from the factory. Use the following procedures as needed for initial implement set up. Hydraulic System Check all hoses and cylinders for signs of leakage.

  • Page 17: Light And Light Bracket Set Up

    — Set Up 8375 CULTIVATOR Light and Light Bracket Set Up For Outer Lights: NOTE: The left and right light brackets should be adjusted according to the degree at which the wings fold. 1. Remove the hex nut and capscrew from the top of the light bracket mount.

  • Page 18: Inner Lights

    — Set Up 8375 CULTIVATOR Light and Light Bracket Set Up For Inner Lights: Inner light brackets must each be mounted equaly from the center of the toolbar and be a total distance of between 4’ and 10’ from each other. The inner red lights will only have a lense on one side of the light and it should be visible from the rear of the toolbar.

  • Page 19: Overhead Layouts

    — Set Up 8375 CULTIVATOR Overhead Layouts 6 Row 30” Spacing Configuration 30” 12” 102” 204” 8 Row 30” Spacing Configuration 12” 30” 132” 264”...

  • Page 20: Row 36" Spacing Configuration

    — Set Up 8375 CULTIVATOR Overhead Layouts 8 Row 36” Spacing Configuration 11” 36” 155” 310” 8 Row 38” Spacing Configuration 19” 38” 171” 342”...

  • Page 21: Row 40" Spacing Configuration

    — Set Up 8375 CULTIVATOR Overhead Layouts 8 Row 40” Spacing Configuration 11” 40” 171” 342” 12 Row 30” Spacing Configuration 11.25” 30” 191.25” 382.5”...

  • Page 22: Row 36" Spacing Configuration

    — Set Up 8375 CULTIVATOR Overhead Layouts 12 Row 36” Spacing Configuration 16” 36” 232” 464” 12 Row 38” Spacing Configuration 28” 38” 256” 512”...

  • Page 23: Row 40" Spacing Configuration

    — Set Up 8375 CULTIVATOR Overhead Layouts 12 Row 40” Spacing Configuration 16” 40” 256” 512” 16 Row 30” Spacing Configuration 11” 30” 251” 502” 2-10...
  • Page 24 — Operation 8375 CULTIVATOR SECTION III Operation General Operation Information ....................3-2 Preparing Tractor ........................3-2 Preparing Cultivator ........................3-2 Bolts & Nuts........................3-2 Pins ............................3-2 Lubrication ........................... 3-2 Wing Folding Degree Adjustment....................3-3 Adjustable Wing Rest ......................... 3-4 90 Degree Folding Procedure ....................

  • Page 25: General Operation Information

    — Operation 8375 CULTIVATOR General Operation Information • READ AND UNDERSTAND SAFETY RULES BEFORE OPERATING OR SERVICING THIS MACHINE. REVIEW “SAFETY” SECTION IN THIS MANUAL IF NECESSARY. Read this operation section thoroughly. Acquaint yourself with the adjustments required to obtain efficient and trouble-free operations. Preparing Tractor •...

  • Page 26: Wing Folding Degree Adjustment

    — Operation 8375 CULTIVATOR Wing Folding Degree Adjustment MOVING WINGS CAN CAUSE SERIOUS INJURY OR DEATH. KEEP AWAY FROM FOLDING • AND UNFOLDING WINGS. NOTE: Vertical Fold Toolbars can be folded to either 90˚, 115˚, 135°, or 180˚. Modifications may need to be made to the current fold angle due to transportation, storage, and application issues of the particular operation NOTE: All Vertical Fold Toolbars come standard with cylinders in the 180 degree fold position and with 180 degree fold wing rests.

  • Page 27: Adjustable Wing Rest

    — Operation 8375 CULTIVATOR Adjustable Wing Rest MOVING WINGS CAN CAUSE SERIOUS INJURY OR DEATH. KEEP AWAY FROM FOLDING • AND UNFOLDING WINGS. NOTE: Vertical Fold Tillage Toolbars are standard with 180° fold configuration. If 115° or 135° fold configuration is desired, adjustable wing rests must be ordered separately (see adjustable wing rest parts page).
  • Page 28 — Operation 8375 CULTIVATOR Adjustable Wing Rest MOVING WINGS CAN CAUSE SERIOUS INJURY OR DEATH. KEEP AWAY FROM FOLDING • AND UNFOLDING WINGS. Adjusting The Wing Rest 1. Before adjusting, be sure the internal FIG. 3-5 hydraulic cylinder is in the correct position Telescoping for the desired degree of folded wing Tube...

  • Page 29: Degree Folding Procedure

    — Operation 8375 CULTIVATOR 90 Degree Folding Procedure MOVING WINGS CAN CAUSE SERIOUS INJURY OR DEATH. KEEP AWAY FROM FOLDING • AND UNFOLDING WINGS. NOTE: The 90 degree fold transport lock (sold seperately) is mandatory for the 90 degree fold position. NOTE: Be sure to follow all steps of the “Changing Position of Internal Cylinder”...

  • Page 30: Cultivator Field Operation

    — Operation 8375 CULTIVATOR Cultivator Field Operation Rigid Operation MOVING WINGS CAN CAUSE SERIOUS INJURY OR DEATH. KEEP AWAY FROM FOLDING • AND UNFOLDING WINGS. 1. With the wings completly unfolded, move the wing lock pin from the storage position and install it into the wing lock position.

  • Page 31: Cultivator Field Adjustment

    — Operation 8375 CULTIVATOR Cultivator Field Adjustments Row Unit Depth Adjustment NOTE: To allow maximum vertical row unit travel, the parallel linkages should generally operate parallel with the top and bottom of the toolbar in the field position. 1. Leave the unit attached to the tractor, raise the unit, then lower the support stands. 2.

  • Page 32: Center Coulter Depth Adjustment

    — Operation 8375 CULTIVATOR Cultivator Field Adjustments Center Coulter Depth Adjustment NOTE: Units equipped with a front tire will come standard with a center coulter. The center coulter can be adjusted vertically to account for different tillage conditions. 1. Leave the unit attached to the tractor, raise the unit, then lower the support stands. 2.

  • Page 33: Down Pressure Adjustment

    — Operation 8375 CULTIVATOR Cultivator Field Adjustments (Continued) Down Pressure Adjustment NOTE: Row unit down pressure springs should be adjusted to arrive at a setting where parallel linkages operate independent of the toolbar and the toolbar serves only as a towing device. 1.

  • Page 34: Barring-Off Disc Adjustment

    — Operation 8375 CULTIVATOR Cultivator Field Adjustments (Continued) Barring-Off Disc Adjustment NOTE: Barring off disc assemblies can be adjusted laterally and vertically. Depth adjustments depend on desired tillage depth and desired amount of residue flow. Width adjustments allow for variations in tillage zone to crop relationship. Depth Adjustment 1.

  • Page 35: Intermediate Tooling Pitch Adjustment

    — Operation 8375 CULTIVATOR Cultivator Field Adjustments (Continued) Intermediate Tooling Pitch Adjustment NOTE: Increasing sweep pitch angle provides increased soil penetration and disturbance. 1. Leave the unit attached to the tractor, raise the unit, then lower the support stands. 2. Lower the unit until it is supported by the stands, then set the tractors parking brake and remove the key.

  • Page 36: Intermediate Tooling Horizontal Adjustment

    — Operation 8375 CULTIVATOR Cultivator Field Adjustments (Continued) Intermediate Tooling Horizontal Adjustment 1. Leave the unit attached to the tractor, raise the unit, then lower the support stands. 2. Lower the unit until it is supported by the stands, then set the tractors parking brake and remove the key.

  • Page 37: Sweep Standard Depth Adjustment

    — Operation 8375 CULTIVATOR Cultivator Field Adjustments (Continued) Sweep Depth Adjustment NOTE: Sweep standard depth is adjusted by raising or lowering the rear shank relative to the tail section. 1. Leave the unit attached to the tractor, raise the unit, then lower the support stands. 2.

  • Page 38: Ridging Wing Width Adjustment

    — Operation 8375 CULTIVATOR Cultivator Field Adjustments (Continued) Ridging Wing Width Adjustment NOTE: Increasing wing width and sweep standard pitch generally provides more soil disturbance. 1. Leave the unit attached to the tractor, raise the unit, then lower the support stands. 2.

  • Page 39: Open Top Fender Adjustment

    — Operation 8375 CULTIVATOR Cultivator Field Adjustments (Continued) • FALLING OBJECTS CAN CAUSE SERIOUS INJURY OR DEATH. DO NOT WORK UNDER THE MACHINE AT ANY TIME WHILE BEING HOISTED. BE SURE ALL LIFTING DEVICES AND SUPPORTS ARE RATED FOR THE LOADS BEING HOISTED. THESE ASSEMBLY INSTRUCTIONS WILL REQUIRE SAFE LIFTING DEVICES UP TO 50 LBS.
  • Page 40 — Operation 8375 CULTIVATOR Cultivator Field Adjustments (Continued) Fore and Aft Adjustment 1. Loosen the hex nuts on the outside of the FIG. 3-29 fender mount arm. (Fig. 3-29) Hex Nuts 2. Move the fender assembly forward or backward to achieve the desired position. 3.

  • Page 41: Closed Top Fender Adjustment

    — Operation 8375 CULTIVATOR Cultivator Field Adjustments (Continued) • FALLING OBJECTS CAN CAUSE SERIOUS INJURY OR DEATH. DO NOT WORK UNDER THE MACHINE AT ANY TIME WHILE BEING HOISTED. BE SURE ALL LIFTING DEVICES AND SUPPORTS ARE RATED FOR THE LOADS BEING HOISTED. THESE ASSEMBLY INSTRUCTIONS WILL REQUIRE SAFE LIFTING DEVICES UP TO 50 LBS.

  • Page 42: Fore And Aft Adjustment

    — Operation 8375 CULTIVATOR Cultivator Field Adjustments (Continued) Lateral Adjustment 1. Remove the hex nuts and lock washers FIG. 3-31 from the u-bolt on the fender assembly upper channel. (Fig. 3-31) 2. Move the fender assembly in or out to achieve the desired width.

  • Page 43: Hitching To Tractor

    — Operation 8375 CULTIVATOR Hitching to Tractor • CRUSHING CAN CAUSE SERIOUS INJURY OR DEATH. DO NOT STAND BETWEEN TOWING VEHICLE AND IMPLEMENT WHEN HITCHING. ALWAYS ENGAGE PARKING BRAKE AND STOP ENGINE BEFORE INSERTING HITCH PINS OR SECURING LATCHES. 3 Point Hitch Tractor Connection 1.
  • Page 44 — Operation 8375 CULTIVATOR Hitching to Tractor (Continued) Quick Hitch Tractor Connection 1. Back up tractor to the implement hitch. Place the tractor in park, turn off the engine, and remove the key before connecting the implement. Injury or death can result from being trapped between the tractor and FIG.

  • Page 45: Transporting And Field Positions

    — Operation 8375 CULTIVATOR Transport and Field Positions • USE TRANSPORT LIGHTS AS REQUIRED BY ALL LAWS TO ADEQUATELY WARN OPERATORS OF OTHER VEHICLES. • REGULATE SPEED TO ROAD CONDITIONS AND MAINTAIN COMPLETE CONTROL. Transport Position: Regulate speed to road conditions and maintain complete control. Be aware of obstructions above, below, and around the implement when in operation or transport.
  • Page 46 — Operation 8375 CULTIVATOR Notes 3-23...
  • Page 47 — Maintenance 8375 CULTIVATOR SECTION IV Maintenance Lubrication ..........................4-2 Mount and Parallel Linkage Disassembly and Assembly ............4-4 Front Wheel Unit Disassembly and Assembly ................4-6 Depth Band Coulter Front ....................4-6 Single Tire Front ........................4-8 Center Coulter Disassembly and Assembly ................4-10 Barring-Off Disc Unit Disassembly and Assembly ..............

  • Page 48: Lubrication

    — Maintenance 8375 CULTIVATOR Lubrication Grease all zerks on the 8375 Cultivator using a high-quality, multi-purpose grease. Follow the recommended hourly service intervals illustrated below. Lubrication Service Intervals # of Grease Points Interval (Hours) Parallel Linkages (Front) Parallel Linkages (Rear) Gauge Wheel Height Adjustment Screw Gauge Wheel Bushing Fender Bushings (Open Top)
  • Page 49 — Maintenance 8375 CULTIVATOR Lubrication (Continued) Fender Bushings (Closed Top) Fender Bushings (Open Top) FIG. 4-5 FIG. 4-6 Wing Cylinder Hinge Wing Hinge FIG. 4-7 FIG. 4-8...

  • Page 50: Mount And Parallel Linkage Disassembly And Assembly

    — Maintenance 8375 CULTIVATOR Mount and Parellel Linkage Disassembly and Assembly • KEEP HANDS CLEAR OF PINCH POINT AREAS. • EYE PROTECTION AND OTHER APPROPRIATE PERSONAL PROTECTIVE EQUIPMENT MUST BE WORN WHILE SERVICING IMPLEMENT. 1. Leave the unit attached to the tractor, raise the unit, then lower the support stands. 2.

  • Page 51: Mount And Parallel Linkage Disassembly And Assembly

    — Maintenance 8375 CULTIVATOR Mount and Parellel Linkage Disassembly and Assembly 6. Remove the flange nuts and capscrews FIG. 4-11 from the back side of the parallel linkages, then remove the row unit from the parallel linkages. (Fig. 4-11) 7. Remove the flange nuts and capscrews from Flange Nuts the front side of the parallel linkages, then Capscrews...

  • Page 52: Front Wheel Unit Disassembly And Assembly

    — Maintenance 8375 CULTIVATOR Front Wheel Unit Disassembly and Assembly • SHARP EDGES ON COULTER BLADES CAN CAUSE INJURY. BE CAREFUL WHEN WORK- ING AROUND COULTER BLADES. For Depth Band Coulter Front: 1. Leave the unit attached to the tractor, raise the unit, then lower the support stands. 2.
  • Page 53 — Maintenance 8375 CULTIVATOR Front Wheel Unit Disassembly and Assembly (Continued) 5. Remove the capscrew and flange nut, then FIG. 4-16 remove the coulter assembly from the row unit. (Fig. 4-16) 6. Remove capscrew and flange nut, then Capscrew remove the coulter and hub from the forks. Flange Nut (Fig.

  • Page 54: Single Tire Front

    — Maintenance 8375 CULTIVATOR Front Wheel Unit Disassembly and Assembly (Continued) For Single Tire Front: 1. Leave the unit attached to the tractor, raise the unit, then lower the support stands to the ground. 2. Lower the unit until it is supported by the stands, then set the tractors parking brake and remove the key.
  • Page 55 — Maintenance 8375 CULTIVATOR Front Wheel Unit Disassembly and Assembly (Continued) 6. Remove the hex nuts from the tire assembly, FIG. 4-20 then remove the hub assembly from the tire. Flange Nuts 7. Inspect parts for wear or damage and replace if neccesary.

  • Page 56: Center Coulter Disassembly And Assembly

    — Maintenance 8375 CULTIVATOR Center Coulter Disassembly and Assembly • SHARP EDGES ON COULTER BLADES CAN CAUSE INJURY. BE CAREFUL WHEN WORK- ING AROUND COULTER BLADES. 1. Leave the unit attached to the tractor, raise the unit, then lower the support stands to the ground. 2.
  • Page 57 — Maintenance 8375 CULTIVATOR Center Coulter Disassembly and Assembly (Continued) 8. Install the hub into the coulter, then install FIG. 4-23 the lock washers, capscews, and flange nuts. (Fig. 4-24) Capscrew 9. Install the coulter into the bracket, then install the capscrew and flange nut into the bracket and coulter assembly.

  • Page 58: Barring-Off Disc Unit Disassembly And Assembly

    — Maintenance 8375 CULTIVATOR Barring-Off Disc Unit Disassembly and Assembly • SHARP EDGES ON COULTER BLADES CAN CAUSE INJURY. BE CAREFUL WHEN WORK- ING AROUND COULTER BLADES. 1. Leave the unit attached to the tractor, raise the unit, then lower the support stands to the ground. 2.
  • Page 59 — Maintenance 8375 CULTIVATOR Barring-Off Disc Unit Disassembly and Assembly (Continued) 6. Remove the snap ring, dust cover, and o-ring. Remove the capscrew, hex nut and lock washer from the hub assembly. (Fig. 4-28) FIG. 4-28 7. Remove the hub and washers from the shank.

  • Page 60: Ripper Shank Disassembly And Assembly

    — Maintenance 8375 CULTIVATOR Ripper Shank Disassembly and Assembly • KEEP HANDS CLEAR OF PINCH POINT AREAS. • EYE PROTECTION AND OTHER APPROPRIATE PERSONAL PROTECTIVE EQUIPMENT MUST BE WORN WHILE SERVICING IMPLEMENT. • CRUSH HAZARD – BE SURE SHANK IS SUPPORTED BEFORE REMOVING TOGGLE ASSEMBLY.
  • Page 61 — Maintenance 8375 CULTIVATOR Ripper Shank Disassembly and Assembly (Continued) 6. Remove the flange nuts and the ripper FIG. 4-31 shank mount from the row unit. (Fig. 4-31) 7. Inspect parts for wear or damage and replace if neccesary. 8. Install the blades onto the ripper shank with the roll pins.

  • Page 62: Intermediate Tooling Disassembly And Assembly

    — Maintenance 8375 CULTIVATOR Intermediate Tooling Disassembly and Assembly • KEEP HANDS CLEAR OF PINCH POINT AREAS. • EYE PROTECTION AND OTHER APPROPRIATE PERSONAL PROTECTIVE EQUIPMENT MUST BE WORN WHILE SERVICING IMPLEMENT. • CRUSH HAZARD – BE SURE SHANK IS SUPPORTED BEFORE REMOVING TOGGLE ASSEMBLY.
  • Page 63 — Maintenance 8375 CULTIVATOR Intermediate Tooling Disassembly and Assembly (Continued) 5. Remove the carriage bolts, and flange nuts FIG. 4-34 from the the sweep shank, then remove the sweep shank from the sweep shank mount. Sweep Carriage (Fig. 4-34) Shank Bolts 6.

  • Page 64: Tillage Shank Disassembly And Assembly

    — Maintenance 8375 CULTIVATOR Tillage Shank Disassembly and Assembly • KEEP HANDS CLEAR OF PINCH POINT AREAS. • EYE PROTECTION AND OTHER APPROPRIATE PERSONAL PROTECTIVE EQUIPMENT MUST BE WORN WHILE SERVICING IMPLEMENT. • CRUSH HAZARD – BE SURE SHANK IS SUPPORTED BEFORE REMOVING TOGGLE ASSEMBLY.
  • Page 65 — Maintenance 8375 CULTIVATOR Tillage Shank Disassembly and Assembly (Continued) 5. Remove the capscrews, flat washers, and FIG. 4-39 flange nuts from the bottom of the shank and then remvoe the sweep from the shank. (Fig. 4-39) Flat 6. Inspect parts for wear or damage and Washers replace if neccesary.

  • Page 66: Depth Adjustment Crank Disassembly And Assembly

    — Maintenance 8375 CULTIVATOR Depth Adjusment Crank Disassembly and Assembly • KEEP HANDS CLEAR OF PINCH POINT AREAS. • EYE PROTECTION AND OTHER APPROPRIATE PERSONAL PROTECTIVE EQUIPMENT MUST BE WORN WHILE SERVICING IMPLEMENT. 1. Leave the unit attached to the tractor, raise the unit, then lower the support stands to the ground. 2.

  • Page 67: Single Sweep Disassembly And Assembly

    — Maintenance 8375 CULTIVATOR Single Sweep Disassembly and Assembly 1. Leave the unit attached to the tractor, raise the unit, then lower the support stands to the ground. 2. Lower the unit until it is supported by the stands, then set the tractors parking brake and remove the key.

  • Page 68: Single Sweep Ridging Wings Disassembly And Assembly

    — Maintenance 8375 CULTIVATOR Single Sweep Ridging Wing Disassembly and Assembly 1. Leave the unit attached to the tractor, raise the unit, then lower the support stands to the ground. 2. Lower the unit until it is supported by the stands, then set the tractors parking brake and remove the key.
  • Page 69 — Maintenance 8375 CULTIVATOR Single Sweep Ridging Wing Disassembly and Assembly 5. Remove the hardware for the ridging wing FIG. 4-48 mount adjuster, then remove the adjuster from the assembly. (Fig. 4-48) 6. Remove the capscrew, flat washers, lock washers, and hex nut from the center adjuster, then remove the adjuster from the assembly.

  • Page 70: Western Sweep Disassembly And Assembly

    — Maintenance 8375 CULTIVATOR Western Sweep Disassembly and Assembly 1. Leave the unit attached to the tractor, raise the unit, then lower the support stands to the ground. 2. Lower the unit until it is supported by the stands, then set the tractors parking brake and remove the key.

  • Page 71: Western Sweep Ridging Wings Disassembly And Assembly

    — Maintenance 8375 CULTIVATOR Western Sweep Ridging Wing Disassembly and Assembly 1. Leave the unit attached to the tractor, raise the unit, then lower the support stands to the ground. 2. Lower the unit until it is supported by the stands, then set the tractors parking brake and remove the key.

  • Page 72: Fender Unit Disassembly And Assembly

    — Maintenance 8375 CULTIVATOR Fender Unit Disassembly and Assembly • KEEP HANDS CLEAR OF PINCH POINT AREAS. • EYE PROTECTION AND OTHER APPROPRIATE PERSONAL PROTECTIVE EQUIPMENT MUST BE WORN WHILE SERVICING IMPLEMENT. For Open Top Fenders: 1. Leave the unit attached to the tractor, raise the unit, then lower the support stands to the ground. 2.
  • Page 73 — Maintenance 8375 CULTIVATOR Fender Unit Disassembly and Assembly (Continued) 6. Remove the carriage bolts, strap, lock washers, and hex nuts from the upper FIG. 4-59 mount arm. Remove the upper mount arm from the cross bar. (Fig. 4-59) 7. Remove the hex nuts, lock washers, flat washer and carriage bolts from the cross bar brackets.

  • Page 74: Closed Top Fenders

    — Maintenance 8375 CULTIVATOR Fender Unit Disassembly and Assembly (Continued) • KEEP HANDS CLEAR OF PINCH POINT AREAS. • EYE PROTECTION AND OTHER APPROPRIATE PERSONAL PROTECTIVE EQUIPMENT MUST BE WORN WHILE SERVICING IMPLEMENT. For Closed Top Fenders: 1. Leave the unit attached to the tractor, raise the unit, then lower the support stands to the ground. 2.
  • Page 75 — Maintenance 8375 CULTIVATOR Fender Unit Disassembly and Assembly (Continued) 6. Remove carriage bolts and flange nuts from Flange FIG. 4-64 the top of the fenders, then remove the Nuts linkage mounts. (Fig. 4-64) Linkage 7. Remove the carriage bolts and flange nuts Mount from the top of the fenders, then remove the fender sides.
  • Page 76 — Maintenance 8375 CULTIVATOR Toolbar Internal Cylinder Removal • KEEP HANDS CLEAR OF PINCH POINT AREAS. • EYE PROTECTION AND OTHER APPROPRIATE PERSONAL PROTECTIVE EQUIPMENT MUST BE WORN WHILE SERVICING IMPLEMENT. • HIGH-PRESSURE FLUIDS CAN PENETRATE THE SKIN AND CAUSE SERIOUS INJURY OR DEATH.
  • Page 77 — Maintenance 8375 CULTIVATOR Toolbar Internal Cylinder Removal (Continued) 9. Remove the locking capscrew, lock washer FIG. 4-68 and flat washer that hold the cylinder pin in place, then remove the cylinder pin from the assembly. (Fig. 4-68) Cylinder Pin 10.

  • Page 78: Troubleshooting

    — Maintenance 8375 CULTIVATOR Storage Do the following before placing the implement in storage: 1. Remove dirt and trash which could cause rusting. 2. Repaint any chipped or scraped areas. 3. Coat all earth moving surfaces with grease or suitable rust preventative. 4.

  • Page 79: Complete Torque Chart

    — Maintenance 8375 CULTIVATOR Complete Torque Chart Capscrews - Grade 5 NOTE: • Grade 5 capscrews can be identified by three radial dashes on the head. • For wheel torque requirements, refer to Wheels and Tires. • Tighten U-bolts evenly and equally to have the same number of threads exposed on each end. FOOT NEWTON SIZE...

  • Page 80: Capscrews - Grade 8

    — Maintenance 8375 CULTIVATOR Complete Torque Chart (Continued) Capscrews - Grade 8 NOTE: • Grade 8 capscrews can be identified by six radial dashes on the head. • For wheel torque requirements, refer to Wheels and Tires. • Tighten U-bolts evenly and equally to have the same number of threads exposed on each end. FOOT NEWTON SIZE...

  • Page 81: Hydraulic Fittings - Torque And Installation

    — Maintenance 8375 CULTIVATOR Hydraulic Fittings – Torque and Installation Tightening O-Ring Fittings 1. Inspec t c omp on e nt s f or d ama ge o r O-Ring fittings contamination. Do not connect any other type of fitting to an O-ring fitting. 2.
  • Page 82 — Maintenance 8375 CULTIVATOR Hydraulic Fittings – Torque and Installation Tightening JIC Fittings 1. Inspect all components for damage or contamination. Do not connect any other JIC fittings type of fitting to a JIC fitting. 2. Lubricate the threads. 3. Turn the fitting into the port until it bottoms out.
  • Page 83 — Maintenance 8375 CULTIVATOR Notes 4-37...
  • Page 84 — Parts 8375 CULTIVATOR SECTION V Parts Decals ............................5-2 Hitch Components ........................5-3 Hitch Clamp Components ......................5-4 Bar Stand Components ......................5-5 180 Degree Wing Rest Components ..................5-6 170 Degree Wing Rest Components ..................5-7 Adjustable Wing Rest Components .................... 5-8 Toolbar Hinge Components ......................

  • Page 85: Decals

    — Parts 8375 CULTIVATOR Decals Please visit www.unverferth.com/parts/ for the most current parts listing. ITEM PART NO. DESCRIPTION NOTES L153-1012 Orthman by Unverferth Decal L153-1006 Cultivator, 8375 Decal L153-172 Yellow Reflective Decal L153-173 Orange Reflective Decal L153-171 Red Reflective Decal...

  • Page 86: Hitch Components

    — Parts 8375 CULTIVATOR Hitch Components Please visit www.unverferth.com/parts/ for the most current parts listing. Cat. 4 Hitches Are Only Available On Models with Double Folding Toolbars 1ITEM PART NO. DESCRIPTION NOTES L601-971 Medium Lift Hitch Package, 110” Category 3/3N L601-972 Medium Lift Hitch Package, 144”...
  • Page 87 — Parts 8375 CULTIVATOR Hitch Clamp Components Please visit www.unverferth.com/parts/ for the most current parts listing. ITEM PART NO. DESCRIPTION NOTES L601-380 Clamp Assembly, Heavy Duty - Medium L601-360 Clamp Assembly, Regular Duty - Medium L302-571 Clamp, Heavy Duty L302-595...

  • Page 88: Bar Stand Components

    — Parts 8375 CULTIVATOR Bar Stand Components Please visit www.unverferth.com/parts/ for the most current parts listing. ITEM PART NO. DESCRIPTION NOTES L600-354 Bar Stand Kit 48” L303-744 Stand Tube, 48” L301-098 Stand Mount L315-027 U-Bolt, 5/8”-11UNC x 5” x 7”...
  • Page 89 — Parts 8375 CULTIVATOR 180 Degree Wing Rest Components Please visit www.unverferth.com/parts/ for the most current parts listing. ITEM PART NO. DESCRIPTION NOTES L301-545 180 Degree Wing Rest L315-031 U-Bolt, 3/4”-10UNC x 7” x 7” L108-022 Lock Washer, 3/4” L102-009...
  • Page 90 — Parts 8375 CULTIVATOR 170 Degree Wing Fold Assembly Components Please visit www.unverferth.com/parts/ for the most current parts listing. ITEM PART NO. DESCRIPTION NOTES L301-524 170 Degree Wing Rest L146-008 Rubber Bumper L315-031 U-Bolt, 3/4”-10UNC x 7” x 7” L100-107 Capscrew, 3/8”-16UNC x 1”...
  • Page 91 — Parts 8375 CULTIVATOR Adjustable Wing Rest Components Please visit www.unverferth.com/parts/ for the most current parts listing.
  • Page 92 — Parts 8375 CULTIVATOR Adjustable Wing Rest Components Please visit www.unverferth.com/parts/ for the most current parts listing. ITEM PART NO. DESCRIPTION NOTES L600-074 Adjustbale Wing Rest Kit L600-101 Adjustable Wing Rest Kit (Short) L300-065 Mount Bracket L300-071 Reciever Tube L300-067...
  • Page 93 — Parts 8375 CULTIVATOR Toolbar Hinge Components Please visit www.unverferth.com/parts/ for the most current parts listing. ITEM PART NO. DESCRIPTION NOTES L301-146 Toolbar Pivot Pin L301-156 Toolbar Locking Pin L134-005 Toolbar Pivot Bushing L134-040 Toolbar Cylindser Bushing L110-001 Grease Fitting...
  • Page 94 — Parts 8375 CULTIVATOR Single Folding Toolbar Light Mounts and SMV Sign Components Please visit www.unverferth.com/parts/ for the most current parts listing. ITEM PART NO. DESCRIPTION NOTES L301-567 Adjustable Light Bracket, Right L301-568 Adjustable Light Bracket, Left L301-563 Adjustable Light Bracket Arm...
  • Page 95 — Parts 8375 CULTIVATOR Double Folding Toolbar Light Mounts and SMV Sign Components Please visit www.unverferth.com/parts/ for the most current parts listing. ITEM PART NO. DESCRIPTION NOTES L341-822 Outer Light Mount (Left) L341-821 Outer Light Mount (Right) L341-825 Inner Light Mount (Left)
  • Page 96 — Parts 8375 CULTIVATOR Rigid Toolbar Light Mounts and SMV Sign Components Please visit www.unverferth.com/parts/ for the most current parts listing. ITEM PART NO. DESCRIPTION NOTES L301-573 Light Mount L153-109 SMV Sign L385-183 SMV Sign Mount L333-499 SMV Sign Mounting Strap L315-026 U-Bolt, 3/8”-16UNC x 7’...

  • Page 97: Degree Wing Fold Assembly Components

    — Parts 8375 CULTIVATOR 180 Degree Wing Fold Assembly Components Please visit www.unverferth.com/parts/ for the most current parts listing. 5-14...
  • Page 98 — Parts 8375 CULTIVATOR 180 Degree Wing Fold Assembly Components Please visit www.unverferth.com/parts/ for the most current parts listing. ITEM PART NO. DESCRIPTION NOTES L194-499 Cylinder, 4” x 24” L301-980 Connecting Strap L301-548 Linkage Pin L301-982 Guide Wheel L301-512 Friction Plate...
  • Page 99 — Parts 8375 CULTIVATOR 170 Degree Wing Fold Assembly Components Please visit www.unverferth.com/parts/ for the most current parts listing. 5-16...
  • Page 100 — Parts 8375 CULTIVATOR 170 Degree Wing Fold Assembly Components Please visit www.unverferth.com/parts/ for the most current parts listing. ITEM PART NO. DESCRIPTION NOTES L194-499 Hydraulic Cylinder, 4” x 24” L301-502 Connecting Strap L301-548 Linkage Pin L301-802 Guide Wheel L134-047...

  • Page 101: Main Frame And Front Fork Components

    — Parts 8375 CULTIVATOR Main Frame and Front Fork Components Please visit www.unverferth.com/parts/ for the most current parts listing. ITEM PART NO. DESCRIPTION NOTES L385-358 Main Frame L385-136 Fork Assmebly L385-168 Scraper L385-327 Brace LH L385-326 Brace, RH L134-067 Bushing...
  • Page 102 — Parts 8375 CULTIVATOR Mount and Parallel Linkage Components Please visit www.unverferth.com/parts/ for the most current parts listing. ITEM PART NO. DESCRIPTION NOTES Inlcudes Items 1, 7, 8, L387-522 Mount Assembly 11, 13, and 16-18 L387-525 Mounting Bracket L385-095 Lower Linkage...

  • Page 103: Tire Components

    — Parts 8375 CULTIVATOR Tire Components Please visit www.unverferth.com/parts/ for the most current parts listing. ITEM PART NO. DESCRIPTION NOTES L190-035 Wheel and Tire Assembly Inlcudes Items 1 and 2 L190-033 Wheel, 10” 6 Lug L192-004 Tire, 20.5” x 8”-10”...

  • Page 104: Depth Band Coulter Components

    — Parts 8375 CULTIVATOR Depth Band Coulter Components Please visit www.unverferth.com/parts/ for the most current parts listing. ITEM PART NO. DESCRIPTION NOTES L635-027 Depth Band Coulter Assembly Includes Items 1-8 L166-033 Smooth Disc, 22” L385-167 Depth Band L312-132 Hub Assembly...

  • Page 105: Center Coulter Components

    — Parts 8375 CULTIVATOR Center Coulter Components Please visit www.unverferth.com/parts/ for the most current parts listing. 5-22...
  • Page 106 — Parts 8375 CULTIVATOR Center Coulter Components Please visit www.unverferth.com/parts/ for the most current parts listing. ITEM PART NO. DESCRIPTION NOTES L385-411 Center Coulter Main Frame L317-119 Center Coulter Disc L340-141 Disc Hub L120-041 Disc Hub Bearing L134-032 Spacer, 1.100”...
  • Page 107 — Parts 8375 CULTIVATOR Depth Adjustment Crack Components Please visit www.unverferth.com/parts/ for the most current parts listing. 5-24...
  • Page 108 — Parts 8375 CULTIVATOR Depth Adjustment Crack Components Please visit www.unverferth.com/parts/ for the most current parts listing. ITEM PART NO. DESCRIPTION NOTES L385-001 Adjustment Crank Assembly L385-003 Upper Adjustment Crank L385-007 Lower Adjustment Crank L385-011 Adjustming Crank Screw L385-002 Indicator Strap...

  • Page 109: Accessory Tooling Clamp Components

    — Parts 8375 CULTIVATOR Accessory Tooling Clamp Components Please visit www.unverferth.com/parts/ for the most current parts listing. ITEM PART NO. DESCRIPTION NOTES L385-203 LH Upper Support L385-202 RH Upper Support L385-260 Lower Clamp L104-047 Cotter Pin L104-092 L100-026 Carriage Bolt, 5/8”-11UNC x 3” Grade 5 L100-013 Carriage Bolt, 1/2”-13UNC x 1 1/2”...

  • Page 110: Inter Row Ripper Shank Components

    — Parts 8375 CULTIVATOR Inter-Row Ripper Shank Components Please visit www.unverferth.com/parts/ for the most current parts listing. ITEM PART NO. DESCRIPTION NOTES L315-528 Ripper Shank L164-039 Front Edge L310-332 Rear Edge L104-049 Roll Pin L104-001 L100-118 Capscrew, 1/2”-13UNC x 2” Grade 5 L108-020 Lock Washer, 1/2”...

  • Page 111: Tail And Shank Components

    — Parts 8375 CULTIVATOR Tail and Shank Components Please visit www.unverferth.com/parts/ for the most current parts listing. ITEM PART NO. DESCRIPTION NOTES L385-460 Row Unit Tail Assemby L385-181 Tillage Shank L100-014 Carriage Bolt, 1/2”-13UNC x 1 3/4” Grade 5 L100-013 Carriage Bolt, 1/2”-13UNC x 1 1/2”...

  • Page 112: Barring Off Disc Mounting Components

    — Parts 8375 CULTIVATOR Barring Off Disc Mounting Components Please visit www.unverferth.com/parts/ for the most current parts listing. ITEM PART NO. DESCRIPTION NOTES L385-419 Cross Tube RH 8” Long Tube (For 30” Row Spacing) L385-421 Cross Tube LH 8” Long Tube (For 30” Row Spacing)

  • Page 113: Barring Off Disc Components

    — Parts 8375 CULTIVATOR Barring Off Disc Components Please visit www.unverferth.com/parts/ for the most current parts listing. ITEM PART NO. DESCRIPTION NOTES L385-428 Shank (RH) L385-429 Shank (LH) L312-321 Hub and Bearing Assembly Includes Items 3 and 5 L120-070 Bearing L104-105 Snap Ring 2 3/8”...

  • Page 114: Intermediate Tooling Clamp Components

    — Parts 8375 CULTIVATOR Intermediate Tooling Clamp Components Please visit www.unverferth.com/parts/ for the most current parts listing. ITEM PART NO. DESCRIPTION NOTES L385-467 Intermediate Tooling Clamp Body L385-472 Intermediate Tooling T-Bolt L385-474 Intermediate Tooling Clmap Pin L104-007 Roll Pin, 1/4” x 1 1/2”...

  • Page 115: Intermediate Tooling Components

    — Parts 8375 CULTIVATOR Intermediate Tooling Components Please visit www.unverferth.com/parts/ for the most current parts listing. ITEM PART NO. DESCRIPTION NOTES L385-371 Tooling Mount Tube L311-034 Sweep Foot Piece L162-013 Sweep, RH L162-014 Sweep, LH L311-033 Tooling Shank L385-338 Clamp Plate L100-402 Plow Bolt, 3/8”-16UNC x 1 1/2”...
  • Page 116 — Maintenance 8375 CULTIVATOR Notes Please visit www.unverferth.com/parts/ for the most current parts listing. 4-33...

  • Page 117: Western Sweep Components

    — Parts 8375 CULTIVATOR Western Sweep Components Please visit www.unverferth.com/parts/ for the most current parts listing. 5-34...
  • Page 118 — Parts 8375 CULTIVATOR Western Sweep Components Please visit www.unverferth.com/parts/ for the most current parts listing. ITEM PART NO. DESCRIPTION NOTES L385-038 Sweep Standard L164-043 Sweep Point L162-202 Blade, 17 1/2” Right Side L162-204 Blade, 17 1/2” Hard Faced Right Side L162-206 Blade, 23 1/2”...
  • Page 119 — Parts 8375 CULTIVATOR Western Sweep Ridging Wing Components Please visit www.unverferth.com/parts/ for the most current parts listing. ITEM PART NO. DESCRIPTION NOTES L385-041 Ridging Wing Mount L313-473 Ridging Wing Spreader, Left L313-472 Ridging Wing Spreader, Right L313-475 Ridging Wing, Right...
  • Page 120 — Parts 8375 CULTIVATOR Notes Please visit www.unverferth.com/parts/ for the most current parts listing. 5-37...

  • Page 121: Single Sweep Components

    — Parts 8375 CULTIVATOR Single Sweep Components Please visit www.unverferth.com/parts/ for the most current parts listing. 5-38...
  • Page 122 — Parts 8375 CULTIVATOR Single Sweep Components Please visit www.unverferth.com/parts/ for the most current parts listing. ITEM PART NO. DESCRIPTION NOTES L610-237 Foot Piece, Single Sweep Includes Items 3-9 L340-170 Sweep, 16in. Nichols End Right L340-172 Sweep, 20in. Nichols End Right L340-174 Sweep, 24in.
  • Page 123 — Parts 8375 CULTIVATOR Single Sweep Ridging Wing Components Please visit www.unverferth.com/parts/ for the most current parts listing. 5-40...
  • Page 124 — Parts 8375 CULTIVATOR Single Sweep Ridging Wing Components Please visit www.unverferth.com/parts/ for the most current parts listing. ITEM PART NO. DESCRIPTION NOTES L311-491 Ridging Wing Assembly L311-353 Attachment Bracket L313-482 Center Adjuster L313-483 Mount Adjuster L313-475 Ridging Wing, Right...
  • Page 125 — Parts 8375 CULTIVATOR Closed Top Fenders Components Please visit www.unverferth.com/parts/ for the most current parts listing. 5-42...
  • Page 126 — Parts 8375 CULTIVATOR Closed Top Shields Components Please visit www.unverferth.com/parts/ for the most current parts listing. ITEM PART NO. DESCRIPTION NOTES L385-424 Fender Assembly Mount L385-431 Fender Assembly Top Channel L385-442 Fender Top Panel L385-443 Fender Side Panel L385-436...
  • Page 127 — Parts 8375 CULTIVATOR Open Top Fenders Components Please visit www.unverferth.com/parts/ for the most current parts listing. 5-44...
  • Page 128 — Parts 8375 CULTIVATOR Open Top Shields Components Please visit www.unverferth.com/parts/ for the most current parts listing. ITEM PART NO. DESCRIPTION NOTES L385-224 Fender Assembly Mount L312-638 Fender Mount Arm L312-785 Fender L312-773 Fender Assembly Arm L312-777 Fender Assembly Top Arm...

  • Page 129: Hydraulic Cylinder

    — Parts 8375 CULTIVATOR Hydraulic Cylinder Please visit www.unverferth.com/parts/ for the most current parts listing. ITEM PART NO. DESCRIPTION NOTES L194-499 Hydraulic Cylinder, 4” x 24” L194-440 Hydraulic Cylinder Seal Kit 5-46...
  • Page 130 — Parts 8375 CULTIVATOR Notes Please visit www.unverferth.com/parts/ for the most current parts listing. 5-47...

  • Page 131: Hydraulic Components

    — Parts 8375 CULTIVATOR Hydraulic Components Please visit www.unverferth.com/parts/ for the most current parts listing. 5-48...
  • Page 132 — Parts 8375 CULTIVATOR Hydraulic Components Please visit www.unverferth.com/parts/ for the most current parts listing. ITEM PART NO. DESCRIPTION NOTES L198-221 Hydrraulic Hose Grip L198-313 Hydraulic Hose Tip Adapter L140-029 Hydraulic Hose Tip, 3/4” O-Ring L152-710 hydraulic Hose Tip Cover L198-203 T Fitting, 9/16”...

  • Page 133: Light Kit Components

    — Parts 8375 CULTIVATOR Light Kit Components Please visit www.unverferth.com/parts/ for the most current parts listing. ITEM PART NO. DESCRIPTION NOTES L154-1001 Red Light L154-1000 Yellow Light L154-1007 Light Harness L154-1020 Light Harness, 13’ Not Shown L154-1005 Light Harness Not Shown...
  • Page 134 — Parts 8375 CULTIVATOR Notes Please visit www.unverferth.com/parts/ for the most current parts listing. 5-51...
  • Page 135 — Parts 8375 CULTIVATOR L:\MANUALS\ORTHMAN\\STALKPULLER\\125-033/////////////////////////*.indd/////September 2024-0 5-52...

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