KUHN HRB202 Operator's Manual
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KUHN HRB202 Operator's Manual

KUHN HRB202 Operator's Manual

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KN136JGB_D
Operator's manual
Read carefully before starting the machine
Power harrow
Original instructions
- English - 01-2020
KN136JGB_D

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Summary of Contents for KUHN HRB202

  • Page 1 KN136JGB_D Operator's manual Read carefully before starting the machine Power harrow Original instructions - English - 01-2020 KN136JGB_D...

  • Page 3: Dear Owner

    1. Dear Owner In buying a Kuhn machine you have chosen wisely. Into it have gone years of thought, research and improvement. You will find, as have thousands of owners all over the world, that you have the best that engineering skill and actual field testing can produce.

  • Page 4: Table Of Contents

    4.2.15 Precautions for maintenance and repair work ..............23 4.2.16 Projection of stones and foreign objects................24 4.2.17 Precautions for machine use .................... 24 4.2.18 Precautions to take before using the parking stands............25 Copyright 2020 KUHN 2. - Contents KN136JGB_D...
  • Page 5 6.1.5 Primary PTO shaft ......................42 6.1.6 Friction slip clutch......................43 6.1.7 Shear bolt torque limiter (HRB202 - HRB202S) ............... 46 6.1.8 Cam type cut-out clutch....................46 6.1.9 PTO output stub on gearbox .................... 51 Adjusting the machine ........................51 6.2.1...
  • Page 6 9.4.6 Adjustments in working position ..................89 9.4.7 Maintenance ........................91 9.4.8 Storage ..........................91 Track eradicators with flexible tines (HRB202 / HRB202S / HRB252D) ........92 9.5.1 Fitting..........................92 9.5.2 Coupling and uncoupling ....................93 9.5.3 Adjustments in working position ..................93 9.5.4...
  • Page 7 Power harrow HRB202-202S-252D-302D Track eradicators with traction bolt or spring overload mechanism (HRB302D) ......95 9.6.1 Uncoupling the machine....................96 9.6.2 Adjustments in working position ..................96 9.6.3 Safety ..........................97 9.6.4 Maintenance........................98 Front or rear levelling bar ......................98 9.7.1...
  • Page 8 Power harrow HRB202-202S-252D-302D 12. Appendix ........................123 12.1 Calculating the load on an axle....................123 13. Limited Warranty ......................131 2. - Contents KN136JGB_D...

  • Page 9: Identification Of The Machine

    Power harrow HRB202-202S-252D-302D 3. Identification of the machine Front view Rear view 3. - Identification of the machine KN136JGB_D...

  • Page 10: Model Identification Plate

    Model identification plate - Please write below the type and serial number of the machine. This information is to be given to the Kuhn authorized dealer for any spare parts order or warranty claim. • (1) The manufacturer: • (2) Type: •...

  • Page 11: Optional Equipment

    Power harrow HRB202-202S-252D-302D Optional equipment - Tick box corresponding to the equipment fitted on your machine: HRB202/HRB202S/HRB252D/HRB302D  Standard linkage.  Hydraulic lift linkage.  Hydraulic lift linkage stroke limiters.  Front or rear levelling bar.  Rear signalling elements.

  • Page 12: Safety

    Power harrow HRB202-202S-252D-302D 4. Safety Description of symbols used in this document This symbol indicates a potentially hazardous situation that if not avoided, could result in serious bodily injury. This symbol is used to identify special instructions or procedures which, if not followed strictly, could result in machinery damage.

  • Page 13: Safety Instructions

    Power harrow HRB202-202S-252D-302D Safety instructions 4.2.1 Introduction The machine must only be operated, maintained and repaired by competent persons who are familiar with machines' specifications and operation and aware safety regulations preventing accidents. The operator must imperatively respect safety instructions in this manual and in the warnings posted on the machine.

  • Page 14: Precautions To Be Taken Before Carrying Out Any Operations On The Machine

    Power harrow HRB202-202S-252D-302D 4.2.3 Precautions to be taken before carrying out any operations on the machine - Before leaving the tractor or before adjusting, maintaining or repairing the machine, disengage the PTO drive, turn off the engine, remove ignition key and wait until all moving parts have come to a complete stop and apply park brake.

  • Page 15: Precautions When Driving

    Power harrow HRB202-202S-252D-302D 4.2.5 Precautions when driving - Tractor handling, stability, performance and braking efficiency are all affected by weight distribution, trailed or mounted implements, additional ballast and driving conditions. It is therefore of great importance that the operator exercises caution in every given situation.
  • Page 16 Power harrow HRB202-202S-252D-302D - Always obey current regulations for driving on roads.  Gross weight and weight per axle The drawings are not legally binding, their only aim is to illustrate the method to use. - Prior to driving on public roads, check that...
  • Page 17 Power harrow HRB202-202S-252D-302D Description of symbols Descri Units Description ption Tractor unladen weight PTAC Gross Combined Weight Rating Unladen load on tractor front axle Empty load on tractor rear axle Axle loads (Tractor + machine) Load on front axle (Tractor + machine)
  • Page 18 Power harrow HRB202-202S-252D-302D Stage 2: - Couple the machine to the tractor. - To measure: Load on front axle (t1): • Tractor + machine (transport position). - To do: - If the front axle load (t1) is below 20% of the tractor tare (T), add ballast weights (M1) to exceed the minimum load on the front axle.

  • Page 19: Maximum Speed

    Power harrow HRB202-202S-252D-302D Stage 4: - To measure: Load on rear axle (t2): • Tractor + machine (transport position). kg kg • Ballast weights. Checking: - Check in the tractor's operator's manual that the value measured is below the maximum allowed tractor rear axle load.

  • Page 20: Hydraulic Circuit

    Power harrow HRB202-202S-252D-302D 4.2.9 Hydraulic circuit Caution! The hydraulic circuit is under high pressure. Maximum pressure at work: 200 bar (2901 psi). - Before connecting hoses to the tractor hydraulics, ensure that tractor and machine circuits are not under pressure.Before disconnecting a hose, depressurize the hydraulic circuit.

  • Page 21: Pto Shaft

    Power harrow HRB202-202S-252D-302D 4.2.10 PTO shaft - Use only PTO shafts supplied with the machine or recommended by the machine manufacturer. The protective shield of the tractor PTO stub, the PTO shaft guards and the protective shield of the machine input shaft must always be in place and in good condition.

  • Page 22: Precautions During Manoeuvres

    Power harrow HRB202-202S-252D-302D PTO type Diameter X splines A ±5 mm (0.20’’) 35 mm (1.378’’) 85 mm (3.35’’) 36 mm (1.42’’) 85 mm (3.35’’) 35 mm (1.378’’) 85 mm (3.35’’) 45 mm (1.772’’) 100 mm (4.00’’) 44 mm (1.732’’) 100 mm (4.00’’)

  • Page 23: Waste Disposal

    - For your own safety and for correct machine operation, only use original manufacturer parts. - It is strongly recommended to have your machine checked by your Kuhn dealer after each season, especially tools and their attaching hardware (nuts, bolts, etc.).

  • Page 24: Projection Of Stones And Foreign Objects

    Power harrow HRB202-202S-252D-302D 4.2.16 Projection of stones and foreign objects - For driver safety, always use a tractor equipped with a cab. Never start the machine when there are people nearby. Even when the machine is used in accordance with its purpose, objects may be projected.

  • Page 25: Precautions To Take Before Using The Parking Stands

    Power harrow HRB202-202S-252D-302D 4.2.18 Precautions to take before using the parking stands 134138: Specific requirements for countries member of the Eurasian Economic Community (EAC marking). 134139: Specific requirements for countries member of the Eurasian Economic Community (EAC marking). 133983: Specific requirements for countries member of the Eurasian Economic Community (EAC marking).

  • Page 26: Location And Description Of Safety Decals On The Machine

    Power harrow HRB202-202S-252D-302D Location and description of safety decals on the machine 4.3.1 Location of safety decals 4. - Safety KN136JGB_D...

  • Page 27: Description Of Safety Decals

    Power harrow HRB202-202S-252D-302D 4.3.2 Description of safety decals  Operating instructions (1) - The operators' manual contains all the information necessary for using the machine safely. It is imperative to read and comply with all instructions.  Working on the machine (2)

  • Page 28: Road Safety Equipment And Recommendations

    Road safety equipment and recommendations The road safety equipment is mounted in the factory or by your authorized Kuhn dealer according to current safety regulations. - Always keep to the legal speed limit for driving a tractor-machine assembly on public roads.

  • Page 29: Likely Critical Failures

    Power harrow HRB202-202S-252D-302D Likely critical failures • 133993: Specific requirements for countries member of the Eurasian Economic Community (EAC marking). • 133994: Specific requirements for countries member of the Eurasian Economic Community (EAC marking). • 133995: Specific requirements for countries member of the Eurasian Economic Community (EAC marking).

  • Page 30: Machine Specifications

    Power harrow HRB202-202S-252D-302D 5. Machine specifications Description and glossary Gearbox Roller Scraper bar Side deflector Blade lower links Blade holder PTO shaft Trough 5. - Machine specifications KN136JGB_D...

  • Page 31: Designated Use Of The Machine

    Power harrow HRB202-202S-252D-302D 5.1.1 Designated use of the machine HRB202-202S-252D-302D power harrows must only be used for work for which they have been designed: Seedbed preparation on ploughed ground or in min-tilled ground with or without simultaneous seeding. Technical specifications...

  • Page 32: Required Equipment

    HRB252D / HRB302D • Friction slip clutch. • Cam type cut-out clutch. HRB202 / HRB202S / HRB252D / HRB302D • 1 3/8’’ - 6 spline pto shaft. • 1 3/8’’ - 21 spline pto shaft. • 1 3/4’’ - 6 spline pto shaft.

  • Page 33: Power Harrow Blades

    Power harrow HRB202-202S-252D-302D 5.3.2 Power harrow blades The machines are factory fitted with standard blades: Standard left and right blade. Available as spare parts: • Left and right long blades (special for potatoes). • The blades enable deep work in light or loose soils.
  • Page 34 Power harrow HRB202-202S-252D-302D  Crumbler roller HRB202-HRB202S-HRB252-HRB302 The Crumbler roller is adapted to dry or slightly wet soils. The roller is fitted with removable bars for reducing risks of clogging. This equipment is not recommended when the power harrow is used in combination with a seed drill.
  • Page 35 Power harrow HRB202-202S-252D-302D  Maxipacker roller HRB252D-HRB302D The Maxipacker roller is adapted to all soil types and particularly to wet and sticky soils. The roller is fitted with a scraper bar. Scraper plates are located between the rows of studs to ensure roller cleaning.

  • Page 36: Sound Levels

    Sound levels have been measured in accordance with the measuring methods as defined in: NF EN ISO 4254-1 «Agricultural machinery - Safety - Part 1: General requirements» Weighted equivalent continuous acoustic pressure level at the driver's seat (closed cabin) L (A) eq: Tractor only: HRB202 / HRB202S HRB252D HRB302D 78.1 dB(A) 77.7 dB(A)

  • Page 37: Putting Into Service

    Power harrow HRB202-202S-252D-302D 6. Putting into service Coupling and uncoupling 6.1.1 Description of coupling elements  Category 2 linkage: • 2 Hitch pin diameter 28 mm (1.10’’) for the lower links. • A top link hitch pin of diameter 25 mm (0.98’’).
  • Page 38 Power harrow HRB202-202S-252D-302D  HRB202-202S The tractor PTO must rotate at a speed of 540/min. The power harrow can also be used with tractors equipped with pto-shafts of 750 rpm and 1000 rpm. Higher rotor speed are obtained.  HRB252D-302D The tractor PTO must rotate at a speed of 1000/min.

  • Page 39: Preparing The Machine

    Power harrow HRB202-202S-252D-302D  Lateral adjustment of the lower linkage arms - Balance the play on either sides of the lift linkage and lock lower link stabilizers. 6.1.3 Preparing the machine  Set back or forward position of lower coupling yokes...

  • Page 40: Coupling The Machine

    Power harrow HRB202-202S-252D-302D  Adjustment - Remove roll pin (1). - Remove pin (2). - Fit lower coupling yoke (3) in the required position. - Insert pin (2). - Insert roll pin (1) to secure pin. - Proceed the same way on the other side.
  • Page 41 Power harrow HRB202-202S-252D-302D Category 3 linkage (c) (Position only to be used on exceptional occasions): • L= 965 mm (3’2’’). - Position ball joints of tractor lower links in line with holes of machine lower yokes. Position the 2 bushes (1) on lower hitch pins...

  • Page 42: Primary Pto Shaft

    Power harrow HRB202-202S-252D-302D 6.1.5 Primary PTO shaft Before using the machine for the first time: - Grease the transmission. - Check overlap of the u-joint drive shaft and adjust length if necessary to avoid any premature wear. The direction of rotation is shown on a decal.

  • Page 43: Friction Slip Clutch

    Power harrow HRB202-202S-252D-302D Never operate the PTO shaft at an angle X exceeding 30°. To avoid serious accidents, the PTO drive shaft guards must be properly in place and fixed with the chains provided. - Attach PTO shaft guard chain in hole (1) on machine side.
  • Page 44 Power harrow HRB202-202S-252D-302D The friction slip clutch may slip when: • The springs are not tight enough. • The machine hits an obstacle. • the friction slip clutch overheats. • Etc . . . - Readjust if necessary.  Friction slip clutch adjustment - Adjust friction slip clutch to working conditions and tractor power.
  • Page 45 Power harrow HRB202-202S-252D-302D The friction slip clutch springs are factory set at measure (L) of : • 34 mm (1.34’’) 1000 min 540 min 110 [150] 73 [100] 73 [100] kW [ hp ] kW [ hp ] 37 [50]...

  • Page 46: Shear Bolt Torque Limiter (Hrb202 - Hrb202S)

    - Screw up and tighten the self-locking nut moderately. - To ensure that the torque limiter works properly, use only KUHN shear bolts. 6.1.8 Cam type cut-out clutch The PTO shaft can be fitted with a cam type cut-out clutch.
  • Page 47 Power harrow HRB202-202S-252D-302D See section: • Putting into service / Cam type cut-out clutch / Cam type cut-out clutch adjustment. The cam type cut-out clutch is based on the principle of disengaging cams that release when an overload occurs. When the cut-out clutch releases, it cuts-out torque transmission to the machine.
  • Page 48 Power harrow HRB202-202S-252D-302D  Fitting the cam type cut-out cluch Fitting of the cam type cut-out clutch to the side gearbox drive shafts is effected by a clamp cone which locates in the drive shaft attachment groove.  Cam type cut-out clutch removal - Uncouple PTO shaft on machine side.
  • Page 49 Power harrow HRB202-202S-252D-302D - Adjust cut-out clutch setting to the tractor power. - Never exceed the maximum allowable DIN engine power: 103 kW (140 hp). Altering the setting: - Before disassembling, check that the cam type cut-out clutch is engaged.
  • Page 50 Power harrow HRB202-202S-252D-302D 1000 min 540 min 73 [100] 110 [150] 58 [80] 44 [60] 73 [100] kW[ hp ] kW [ hp ] 29 [40] 37 [50] 15 [20] L [mm] FACTORY SETTING By increasing the dimension L, the release effort is reduced and vice versa.

  • Page 51: Pto Output Stub On Gearbox

    Power harrow HRB202-202S-252D-302D 6.1.9 PTO output stub on gearbox The gearbox is factory fitted with a rear PTO output stub that rotates in the same direction and at the same speed as the tractor PTO. The rear PTO enables driving a complementary...

  • Page 52: Rotor Speed (Hrb202 - Hrb202S)

    Power harrow HRB202-202S-252D-302D 6.2.2 Rotor speed (HRB202 - HRB202S) The rotor speed varies according to the tractor PTO speed. kW (hp) 59(80) 540/min 253/min 59(80) 750/min 351/min 59(80) 1000/min 468/min Preferred PTO speed - Refer to the decal fitted on the machine.

  • Page 53: Rotor Speed Adjustment (Hrb252D / Hrb302D)

    Power harrow HRB202-202S-252D-302D 6.2.3 Rotor speed adjustment (HRB252D / HRB302D) The rotor speed can be adjusted by inverting the standard gearwheels using optional gearwheel sets. - Reduce top link length to slightly tilt the machine forward. - Remove screws (1) and gearbox cover (2).
  • Page 54 Power harrow HRB202-202S-252D-302D HRB252: - Refer to the decal fitted on the machine. HRB302D: - Clean and reassemble the unit: - Check O-ring is correctly positioned within gearbox cover. 6. - Putting into service KN136JGB_D...

  • Page 55: Adjusting The Roller Scrapers

    Power harrow HRB202-202S-252D-302D • Torque setting for screws:10 daNm (74 lbf ft) 6.2.4 Adjusting the roller scrapers  Standard plate The scraper plates are factory preset on a reference roller. The scraper bar is factory fitted with: • Packer PK2 roller: Non coated plates (HRB202-HRB202S-HRB252D-HRB302D).
  • Page 56 Power harrow HRB202-202S-252D-302D  Maxipacker roller (Retractable scraper bar) HRB252D Adjusting the plates: - Loosen plate attachment nut. - Adjust plate to bring it closer to the roller. Check that roll and scraper do not contact by rotating the roller.
  • Page 57 Power harrow HRB202-202S-252D-302D  Steelliner roller HRB302D When the machine is attached, check that the roller can rotate freely. Adjusting the plates (2): - Loosen plate attachment nut (1). - Adjust plate to bring it closer to the roller. - Check that roll and scraper do not contact by rotating the roller.
  • Page 58 Power harrow HRB202-202S-252D-302D Fitting and adjusting the nylon scraper plate: - Place nylon plate between 2 metallic scraper plates. - The plastic pad must exceed the metal plates by 10 mm (0.4’’) approximately. The nylon plate is reversible for longer service life.

  • Page 59: Adjusting The Scraper Plate Holder

    Power harrow HRB202-202S-252D-302D 6.2.5 Adjusting the scraper plate holder  Retractable scraper bar The slots in the scraper plate supports provide lateral adjustment: • Torque: 10 daNm (74 lbf ft).  Rigid scraper bar The eccentric (1) enables refining the mud scraper adjustment.

  • Page 60: Adjusting The Side Deflectors

    Power harrow HRB202-202S-252D-302D 6.2.6 Adjusting the side deflectors The deflector position must be adapted to: • The working depth. • The blade wear. The deflectors are factory fitted in the lower position (a). - Loosen screw (1). - Remove screw (2).

  • Page 61: Roller Rear Offset Adjustment

    Power harrow HRB202-202S-252D-302D 6.2.7 Roller rear offset adjustment For machines fitted with the following rollers: • Maxicrumbler roller • Packer PK2 roller • Maxipacker roller • Steelliner roller The roller is mounted in position (a): - It is forbidden to alter this setting.

  • Page 62: Crumbler Roller Adjustment

    Power harrow HRB202-202S-252D-302D From the transport position: - Park the machine on level hard ground. - Remove roll pins (1): 1 on each machine side. - Remove pins (2): 1 on each machine side. - Position roller in holes corresponding to the required assembly.
  • Page 63 Power harrow HRB202-202S-252D-302D With removable rods removed: (b) Recommended for use in wetter conditions, it reduces risk of clogging. Produces a coarser crumbling and levelling. To remove the rods: - Drive out roll pins (1). - Dislodge rods using a hammer.

  • Page 64: Uncoupling The Machine

    Power harrow HRB202-202S-252D-302D 6.2.9 Uncoupling the machine - When optional equipment is used, follow specific procedures mentioned in the related section: • Optional equipment Hydraulic lift linkage / Removal. • Optional equipment / Rear attachment with double acting hydraulic lift Removal.

  • Page 65: Handling

    Power harrow HRB202-202S-252D-302D 6.2.10 Handling When lifting this equipment, use appropriate lift straps, chains or any other equipment, in perfect working order, complying with safety standards in force for this type of equipment, and with capacities that exceed the total weight of the unit, as listed in this manual.

  • Page 66: Instructions For Transport

    Power harrow HRB202-202S-252D-302D 7. Instructions for transport Before placing the machine into transport position: - Wait until the rotating parts have come to a complete stop. Putting the machine into transport position - When optional equipment is used, follow specific procedures mentioned in the related section: •...

  • Page 67: Conformity With The Road Regulations

    Power harrow HRB202-202S-252D-302D Conformity with the road regulations - Before driving the machine on public roads, ensure that the machine complies with current highway code regulations. - Check that reflectors are clean. - During transport, adapt the travel speed to suit the road conditions.

  • Page 68: Instructions For Work

    Power harrow HRB202-202S-252D-302D 8. Instructions for work Putting the machine into work position Before placing the machine in working position: - Check that nobody is within the machine pivoting area. - If there is someone, make sure the person moves away.

  • Page 69: Adjustments In Working Position

    Power harrow HRB202-202S-252D-302D Adjustments in working position 8.2.1 Working depth The roller provides working depth adjustment and control. - Fit the adjustment pin (2) in one of the adjusting plate holes (1) to adapt the working depth. - Adjust both sides to the same setting.

  • Page 70: Machine Use

    Power harrow HRB202-202S-252D-302D Machine use - Before leaving the tractor or before adjusting, maintaining or repairing the machine, disengage the PTO drive, turn off the engine, remove ignition key and wait until all moving parts have come to a complete stop and apply park brake.
  • Page 71 Power harrow HRB202-202S-252D-302D - Only work in straight lines. Lift the machine to turn. Use of the power harrow entails limits which must be respected in all situations and that are often related to: • Weather conditions: Avoid working during and immediately after rain, wait until the ground to be worked is completely drained.

  • Page 72: Drive Speed

    Power harrow HRB202-202S-252D-302D 8.3.1 Drive speed Groundspeed must be adapted to the encountered working conditions. 8. - Instructions for work KN136JGB_D...

  • Page 73: Optional Equipment

    Power harrow HRB202-202S-252D-302D 9. Optional equipment Sets of gearwheels (HRB252D / HRB302D) With this equipment, additional rotor speeds may be obtained. • Set of 19 and 26 teeth gearwheels. • Set of 17 and 28 teeth gearwheels. Gearwheel position * 21...

  • Page 74: Standard Linkage

    Power harrow HRB202-202S-252D-302D Standard linkage This equipment allows an additional machine to be coupled. The equipment comprises the following component: • A mechanical 3-point linkage. 9.2.1 Adjustment  Overhang - Loosen bolts (1). - Place lower link (2) in the required position.

  • Page 75: Hydraulic Lift Linkage

    Power harrow HRB202-202S-252D-302D Hydraulic lift linkage This equipment allows an additional machine to be coupled. This equipment is used to reduce the combination's overhang when fitting an additional machine. The equipment comprises the following component: • A 3-point hydraulic attachment category 2.

  • Page 76: Coupling Device

    Power harrow HRB202-202S-252D-302D  Description of safety decals Crushing area (1) - Never operate in an area where there is a crushing risk before all moving parts have come to a complete stop. Additional machine lowering (2) - AVANT L’ARRET DU MOTEUR...

  • Page 77: Adjustment

    Power harrow HRB202-202S-252D-302D  Hydraulic connection - Connect hydraulic hose to a single acting spool valve. 9.3.3 Adjustment  Categories of linkage The hydraulic attachment can be adapted for additional machines with a standard linkage category 1 or 2: • (a): Category 1 linkage adaptation: •...
  • Page 78 Power harrow HRB202-202S-252D-302D - Remove bolts (2) and nuts (1). - Place hook (4) and spacers (3) in the required position. - Reinstall bolts (2) and nuts (1): • Torque: 42 daNm (309 lbf ft). - Adjust both sides to the same setting.

  • Page 79: Removal

    Power harrow HRB202-202S-252D-302D Position (b): Maximum overhang. Position (c): Minimum overhang. - Remove bolts (1). - Place hydraulic attachment frame (2) in the required position. - Reinstall bolts (1): • (1) Torque: 25 daNm (184 lbf ft). • (3) Torque: 17 daNm (125 lbf ft).
  • Page 80 Power harrow HRB202-202S-252D-302D - When optional equipment is used, follow specific procedures mentioned in the related section: • Optional equipment Hydraulic lift linkage / Optional equipment / Hydraulic lift linkage stroke limiters. - Activate the single acting valve that controls the lift cylinders of the hydraulic lift linkage.

  • Page 81: Putting The Machine Into Work Position

    Power harrow HRB202-202S-252D-302D 9.3.6 Putting the machine into work position From the transport position: - Loosen chain (1). - Unhook safety chain ((3) side). - Activate the single acting valve that controls the lift cylinders of the hydraulic lift linkage.

  • Page 82: Maintenance

    Power harrow HRB202-202S-252D-302D By fitting the hydraulic attachment stroke limiters, the additional machine's lift height can be controlled. By removing the stroke limiters, the additional machine can be fully raised. Putting the machine into transport position - Remove lynch pins (1).

  • Page 83: Storage

    Power harrow HRB202-202S-252D-302D Every 100 hours - Grease: • Pivot points. 9.3.9 Storage  At the end of each season - Grease the cylinder rods in contact with the outside. A7300019 0  At the start of each season - Wipe off grease on cylinder rods.

  • Page 84: Rear Attachment With Double Acting Hydraulic Lift (Hrb252D-Hrb302D)

    Power harrow HRB202-202S-252D-302D Rear attachment with double acting hydraulic lift (HRB252D-HRB302D) This equipment allows an additional machine to be coupled. The equipment comprises the following component: • A 3-point hydraulic attachment category 2. The lift capacity is of approximately 3300 daN (7418lbf) for a tractor pressure of 180 bar (2610 psi).

  • Page 85: Coupling Device

    Power harrow HRB202-202S-252D-302D Additional machine lowering (2) - AVANT L’ARRET DU MOTEUR - Make sure that the additional machine rests on the REPOSER LE SEMOIR AU SOL - AVANT TOUTE INTERVENTION - AVANT LA DEPOSE DE L’ENSEMBLE - BEFORE STOPPING TRACTOR ENGINE...
  • Page 86 Power harrow HRB202-202S-252D-302D - Loosen screw (3). - Remove bolt (2) and nut (1). - Place hook (4) in the required position. - Tighten screw (3). - Reinstall bolt (2) and nut (1): • Torque (2) (3): 42 daNm (309 lbf ft).
  • Page 87 Power harrow HRB202-202S-252D-302D - Lower the tractor three-point linkage. - Lower the rear attachment lift. - Place the lower links as close as possible under the hitch pins. - Raise the rear attachment lift. - Attach lower links to the hitch pins on the inside of the yokes.

  • Page 88: Removal

    Power harrow HRB202-202S-252D-302D 9.4.3 Removal - AVANT L’ARRET DU MOTEUR REPOSER LE SEMOIR AU SOL - AVANT TOUTE INTERVENTION - AVANT LA DEPOSE DE L’ENSEMBLE - BEFORE STOPPING TRACTOR ENGINE LOWER SEEDER TO THE GROUND - BEFORE ANY MAINTENANCE - BEFORE REMOVING FROM TRACTOR...

  • Page 89: Putting The Machine Into Work Position

    Power harrow HRB202-202S-252D-302D 9.4.5 Putting the machine into work position Before placing the machine in working position: - Check that nobody is within the machine pivoting area. - If there is someone, make sure the person moves away. From the transport position: - Activate the transport/work cylinder control valve in the "pivot into transport"...
  • Page 90 Power harrow HRB202-202S-252D-302D Multi hole adjustment plate (Gross adjustment): - Remove lynch pin (1). - Select hole in the multiple hole plate (2) that corresponds to the required setting. - Insert and lock lynch pin (1). - Lower the rear attachment lift to check the setting.

  • Page 91: Maintenance

    Power harrow HRB202-202S-252D-302D 9.4.7 Maintenance  Lubrication The pictorials show the points to be greased. - Clean grease nipples before greasing. - Lubricate with multi-purpose grease grade NLGI 2. Every 100 hours - Grease: • Pivot points. 9.4.8 Storage ...

  • Page 92: Track Eradicators With Flexible Tines (Hrb202 / Hrb202S / Hrb252D)

    Power harrow HRB202-202S-252D-302D Track eradicators with flexible tines (HRB202 / HRB202S / HRB252D) The equipment is composed of 2 track eradicator supports and 4 flexible tines. The track eradicators can be adjusted laterally and in working depth for work behind the tractor wheels and at different depths.

  • Page 93: Coupling And Uncoupling

    Power harrow HRB202-202S-252D-302D 9.5.2 Coupling and uncoupling  Uncoupling the machine - Loosen counternuts (1). - Loosen bolts (2). - Raise track eradicator (3). The working depth of the track eradicators must not exceed 50 mm (2’’). - Tighten counternuts (1).

  • Page 94: Maintenance

    Power harrow HRB202-202S-252D-302D  Working depth adjustment - Loosen counternuts (1). - Loosen bolts (2). - Set the required working depth. The working depth of the track eradicators must not exceed 50 mm (2’’). - Tighten counternuts (1). - Tighten bolts (2).

  • Page 95: Track Eradicators With Traction Bolt Or Spring Overload Mechanism (Hrb302D)

    Power harrow HRB202-202S-252D-302D Track eradicators with traction bolt or spring overload mechanism (HRB302D) The track eradicators reduce tractor wheel marks in the seedbed. The equipment is made up of the following components: • A set of tine holders. • A set of 2 track eradicator tines: •...

  • Page 96: Uncoupling The Machine

    Power harrow HRB202-202S-252D-302D 9.6.1 Uncoupling the machine - Remove R-clip (1). - Remove pin (2). - Raise track eradicator (3). - Reinstall pin (2). - Reinstall R-clip (1). - Repeat procedure for each track eradicator. 9.6.2 Adjustments in working position ...

  • Page 97: Safety

    Power harrow HRB202-202S-252D-302D  Working depth adjustment - Adjust the track eradicator working depth using pin (2). The working depth of the track eradicators must not exceed 100 mm (4’’). - Adjust both sides to the same setting. 9.6.3 Safety...

  • Page 98: Maintenance

    Power harrow HRB202-202S-252D-302D 9.6.4 Maintenance - Use genuine KUHN parts.  Share replacement Each track eradicator share is reversible for increased service life: - Replace if necessary: • Torque: 10 daNm (74 lbf ft). Front or rear levelling bar The levelling bar can be fitted to the front or rear of the machine.
  • Page 99 Power harrow HRB202-202S-252D-302D Front position The front levelling bar levels irregular grounds and helps brake up dry clods. Rear position The rear levelling bar increases the crumbling degree in dry soils and the roller efficiency in sandy soils. The rear levelling bar is not recommended in wet and sticky soils, and when there are a lot of stones.

  • Page 100: Lights And Indicators

    Power harrow HRB202-202S-252D-302D Lights and indicators The machine can be fitted with specific signalling lights to comply with the road regulations. The rear device is made up of the following components: • 2 reflective pannels. • 2 tail lights (red light / stop light / turn signal light).

  • Page 101: Front Signalling Elements (Hrb252D-Hrb302D)

    Power harrow HRB202-202S-252D-302D 9.10 Front signalling elements (HRB252D-HRB302D) The machine can be fitted with specific signalling lights to comply with the road regulations. The front device is made up of the following components: • 2 reflective pannels. • 2 white sidelights.

  • Page 102: Retractable Side Deflectors (Hrb252D-Hrb302D)

    Power harrow HRB202-202S-252D-302D 9.12 Retractable side deflectors (HRB252D-HRB302D) The equipment is made up of the following components: • Side deflectors. • Side deflectors anti-ridging plates. 9.12.1 Coupling and uncoupling  Adjusting the side deflector - For safety reasons, it is not allowed to fold the side deflectors over the trough.

  • Page 103: Maintenance

    9.12.2 Maintenance  Checking the side deflectors - Immediately replace worn or damaged parts with genuine KUHN parts. Side deflectors - Replace side deflectors (1) and anti-ridging plates (2) when measure L reaches : 20 mm (0.79’’). Side deflector replacement...

  • Page 104: Universal Arm Kit (Hrb252D-Hrb302D)

    Power harrow HRB202-202S-252D-302D - Remove screws and nuts (1). Replace if necessary. - Replacing the side deflectors and anti-ridging plates. - Reinstall bolts and nuts (1): • Torque: 8.5 daNm (62.5 lbf ft). 9.13 Universal arm kit (HRB252D-HRB302D) 9.14 32X38-8 spline yoke (HRB252D-HRB302D) 9.

  • Page 105: Adaptation Parts For Venta Lc (Hrb302D)

    Power harrow HRB202-202S-252D-302D 9.15 Adaptation parts for VENTA LC (HRB302D) This equipment enables integrating a VENTA LC seed drill to the machine. 9. - Optional equipment KN136JGB_D...

  • Page 106: Maintenance And Storage

    Power harrow HRB202-202S-252D-302D 10. Maintenance and storage - Before leaving the tractor or before adjusting, maintaining or repairing the machine, disengage the PTO drive, turn off the engine, remove ignition key and wait until all moving parts have come to a complete stop and apply park brake.

  • Page 107: Cleaning The Machine

    Power harrow HRB202-202S-252D-302D 10.2 Cleaning the machine - Regularly check that there are no foreign objects wrapped around the blade holder (twine, wire, crop residues, ...). - To prevent premature bearing housing wear, remove foreign bodies wrapped around them. - Regularly check side deflectors.

  • Page 108: Lubrication

    Power harrow HRB202-202S-252D-302D 10.3 Lubrication - Before leaving the tractor or before adjusting, maintaining or repairing the machine, disengage the PTO drive, turn off the engine, remove ignition key and wait until all moving parts have come to a complete stop and apply park brake.
  • Page 109 Power harrow HRB202-202S-252D-302D  PTO shaft with friction slip clutch or cam type cut-out clutch Before using the machine for the first time: - Grease the transmission. Every 250 hours or at the end of the season: • U-joints (1).

  • Page 110: Trough

    HRB202-202S-252D-302D 10.3.2 Trough The trough is lubricated for life with grade NLGI 0 semi-fluid grease (extreme pressure). Quantity: • HRB202-202S: 16 kg (35.2 lb). • HRB252D: 20 kg (44 lb). • HRB 302D: 23 kg (50.7 lb). 10.3.3 Draining ...
  • Page 111 Power harrow HRB202-202S-252D-302D For intensive use: • A synthetic oïl of type PAO (Poly-Alpha- Olefine) of viscosity grade equivalent to SAE 75W90 and API grade GL5. - Lower the tractor three-point linkage to rest the machine on the ground. - Increase top link length to tilt the machine rearwards.
  • Page 112 Power harrow HRB202-202S-252D-302D  Gearbox (HRB252D / HRB302D) - Before draining oil, operate the machine for a few minutes so that the oil warms up. HRB252D / HRB302D Oil volume 3.5 L (0.92 US gal) Type of oil Mineral oil (Gear oil)

  • Page 113: Greasing

    Power harrow HRB202-202S-252D-302D Checking the oil level - Place the machine on level ground. - Remove level plug (1): • The oil level must reach the lower edge of level hole (2). - Clean and reinstall drain plug (1). 10.3.4 Greasing •...

  • Page 114: Maintenance

    - Check that there are no oil leaks on the central gearbox. 10.4.2 Checking the blades and their mounting hardware - Immediately replace worn or damaged parts with genuine KUHN parts.  Blades - Replace blades in the following cases: • When the wear value L reaches 150 mm (6’’).
  • Page 115 Power harrow HRB202-202S-252D-302D  Blade replacement (HRB202/HRB252D/HRB302D) - Before leaving the tractor or before adjusting, maintaining or repairing the machine, disengage the PTO drive, turn off the engine, remove ignition key and wait until all moving parts have come to a complete stop and apply park brake.
  • Page 116 Power harrow HRB202-202S-252D-302D Rotor direction of rotation HRB202 90° 60° 30° 0° 15° 45° 75° HRB252D 90° 60° 30° 0° 15° 45° 75° 75° HRB302D 90° 60° 30° 30° 0° 15° 45° 75° 75° 45° - Reassemble the unit. - Check condition of bolts and nuts. Replace them if necessary: •...
  • Page 117 Power harrow HRB202-202S-252D-302D  Blade replacement ( HRB202S) - Before leaving the tractor or before adjusting, maintaining or repairing the machine, disengage the PTO drive, turn off the engine, remove ignition key and wait until all moving parts have come to a complete stop and apply park brake.

  • Page 118: Storage

    Power harrow HRB202-202S-252D-302D HRB202S 90° 60° 30° 0° 15° 45° 75° - Reassemble the unit. - Check the condition of the lynch pin (replace it if necessary). - Proceed same way on each rotor.  Securing elements - Check the condition of the lynch pins after each blade replacement.

  • Page 119: At The Start Of Each Season

    Power harrow HRB202-202S-252D-302D 10.5.2 At the start of each season - Re-read the operators' manual. - Check that all nuts and bolts are sufficiently tightened. - Make sure that all protection devices are in place and in good condition. 10.5.3 Storage •...

  • Page 120: Dismantling And Scrapping Of The Machine

    Power harrow HRB202-202S-252D-302D 10.6 Dismantling and scrapping of the machine At the end of the machine's life, the various machine components must be disposed of or recycled in compliance with local regulations in force. - Make sure the machine is stable (parking stands, holders, slings, etc.) prior to carrying out any repair or maintenance.

  • Page 121: Troubleshooting Guide

    Power harrow HRB202-202S-252D-302D 11. Troubleshooting guide    Problem Cause Remedy Noisy drive when lifting the Top link of 3-point hitch badly - Position top link parallel to machine. positioned/adjusted. lower linkage arms. Excessive lifting height. - Limit the lift linkage stroke.
  • Page 122 Power harrow HRB202-202S-252D-302D Tilth produced is too fine. Rotor speed too high. - Reduce speed by changing gearwheels in the gearbox (optional gearwheel sets). Forward speed is too slow. - Increase forward speed. Rear levelling bar is too low. - Raise remove levelling bar.
  • Page 123 Power harrow HRB202-202S-252D-302D 12. Appendix 12.1 Calculating the load on an axle When coupling a tool to the front and/or rear 3-point lift linkage, the maximum authorized payload must not be exceeded. When coupling tools to the front and/or rear 3-point lift linkages, the maximum load on tractor's tires must not be exceeded.
  • Page 124 Power harrow HRB202-202S-252D-302D Obtained Description Units Description Tractor unladen weight Unladen load on tractor front axle Empty load on tractor rear axle Axle loads (Tractor + machine) Load on front axle (Tractor + machine) Load on rear axle (Tractor + machine)
  • Page 125 Power harrow HRB202-202S-252D-302D Front tool: 1) Calculation of the minimum front ballast weight M2 minimum      a T2 b – 0 45 ---------------------------------------------------------------------------- - M2minimum minimum - Write the minimal additional weight in the chart. 2) Calculation of the actual load on the front axle T1...
  • Page 126 Power harrow HRB202-202S-252D-302D  Table Actual value obtained Value authorized Double value of the by calculation according to authorized capacity operator's manual per tyre (2 tyres) Minimum front/rear ballasting Total weight < Load on front axle < < Load on rear axle <...
  • Page 127 Power harrow HRB202-202S-252D-302D T2: Load on rear axle. • Tractor only. T2 = _____kg T2 = ________ kg T: Axle loads. • Tractor only. T = _____kg T = ________ kg  Rear tool or front-rear combination - If the total unit weight exceeds the tractor...
  • Page 128 Power harrow HRB202-202S-252D-302D - Measure dimension (b). - Measure dimension (c). t1: Load on front axle. • Tractor + machine. • Hopper empty. t1 = _____kg t1 = ________ kg t: Axle loads. • Tractor + machine. • Hopper empty.
  • Page 129 Power harrow HRB202-202S-252D-302D  Front tool - If the total unit weight exceeds the tractor Gross Combined Weight Rating accordance with the countrie's legislation, empty the hopper to travel on public roads. In any case, we recommend to travel on public roads with empty hoppers and tanks.
  • Page 130 Power harrow HRB202-202S-252D-302D t: Axle loads. • Tractor + machine. t = _____kg t = ________ kg Calculating the front tool weight: • M1 = t - T Calculating the distance (a): • a = ( b x ( T2 - t2) ) / M1 12.
  • Page 131 KUHN equipment from an authorized KUHN dealer, that such equipment is, at the time of delivery to such purchaser, free from defects in material and workmanship, and that such equipment is covered under this Limited Warranty providing the machine is used and serviced in accordance with the recommendations in the Operator's manual.
  • Page 132 - The warranty claim is completed on line via extranet - www.kuhn.com or submitted on a KUHN warranty claim form and returned to the Company within one month after the date of failure or the date of problem becoming apparent.
  • Page 133 $Specimen of the "Declaration of conformity" EC Declaration of conformity (European directive 2006/42/CE) The manufacturer: Manufacturer name and address declares that the product described hereafter: Brand Brand Machine Machine Type / Model : Type / Model Serial no. Serial no. - conforms to the requirements of the European directive 2006/42/CE.
  • Page 136 KUHN SAS - B.P. 50060 - F - 67706 SAVERNE CEDEX (FRANCE) KUHN-AUDUREAU SAS - B.P. 19 - F - 85260 LA COPECHAGNIERE (FRANCE) KUHN-BLANCHARD SAS - 24, route de Nantes - F - 44680 CHEMERE (FRANCE) KUHN-HUARD S.A.S - B.P. 49 - F - 44142 CHATEAUBRIANT CEDEX (FRANCE) KUHN-GELDROP B.V.

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