KUHN HR303M Operator's Manual
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KUHN HR303M Operator's Manual

KUHN HR303M Operator's Manual

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OPERATOR'S MANUAL
Power harrows
KN110FGB A
- English - 12-2006

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Summary of Contents for KUHN HR303M

  • Page 1 OPERATOR'S MANUAL Power harrows KN110FGB A - English - 12-2006...

  • Page 3: Dear Owner

    Designated use of the machine HR303D / HR303M 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.

  • Page 4: Table Of Contents

    Power harrows HR303D/M $CONTENTS Dear Owner........................1 Contents ......................... 2 Identification of the machine ..................4 Front view ............................4 Rear view ............................4 Model identification plate........................ 5 Optional equipment ......................... 6 Safety ..........................8 Description of symbols used in this document ................8 Safety instructions...........................
  • Page 5 Power harrows HR303D/M Instructions for work....................49 Putting the machine into work position ..................49 Adjustments in working position ....................49 Machine use ........................... 51 Optional equipment......................53 Sets of gearwheels ........................53 Standard linkage ..........................55 Hydraulic lift linkage........................56 Hydraulic lift linkage stroke limiters .................... 61 High capacity hydraulic lift linkage....................

  • Page 6: Identification Of The Machine

    Power harrows HR303D/M $IDENTIFICATION OF THE MACHINE 1. Front view 2. Rear view Identification of the machine...

  • Page 7: Model Identification Plate

    Power harrows HR303D/M 3. Model identification plate Please write below the type and serial number of the machine. This information is to be indicated to the dealer for all spare parts orders. Type: HR303D / HR303M Identification of the machine...

  • Page 8: Optional Equipment

    HR303D/M 4. Optional equipment Tick box corresponding to the equipment fitted on your machine: HR303D and HR303M Kit no. 1246020: Standard linkage. Kit no. 1246030: Hydraulic lift linkage. Kit no. 1246040: Hydraulic lift linkage stroke limiters. Kit no. 1239140: High capacity hydraulic lift linkage.
  • Page 9 Kit no. 1237930: Set of gearwheels (24 and 32 teeth matching gears). Kit no. 1239130: Set of gearwheels (21 and 35 teeth matching gears). HR303M Kit no. 1237420: Set of gearwheels (19 and 26 teeth matching gears). Identification of the machine...

  • Page 10: Safety

    Power harrows HR303D/M $SAFETY 1. 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 11: Safety Instructions

    Never let anyone operate the machine who is not trained to do so. Should you have any difficulties in understanding certain parts in this manual, please contact your KUHN dealer. Precautions to be taken before carrying out any operations on the machine...
  • Page 12 Power harrows HR303D/M Precautions to take before using the machine Do not wear loose clothing which could become caught up in moving parts. Wear the appropriate protective clothing for the work in hand (gloves, shoes, goggles, helmet, ear-protectors, etc.). Make sure that all operating controls (ropes, cables, rods, etc) are placed so that they cannot be set off accidentally, risking accident or damage.
  • Page 13 Power harrows HR303D/M Precautions when driving on public roads Dimensions Depending on the dimensions of the machine, contact the relevant authorities to ensure that it can be legally transported on public roads. If the machine is over the maximum legal size, follow the local regulations for special transports of oversize equipment.
  • Page 14 Power harrows HR303D/M Precautions when coupling Before attaching the machine, make sure that it cannot accidentally start moving (chock the wheels) and that the parking stand is in the right position. The machine must only be attached to the hitch points provided for this purpose.
  • Page 15 Power harrows HR303D/M PTO shaft Use only PTO shafts supplied with the machine or recommended by the manufacturer. The protective shield of the tractor PTO stub, the PTO shaft guards and the protective covering of the machine input shaft must always be in place and in good condition.
  • Page 16 Power harrows HR303D/M Precautions during manoeuvres When moving the machine from the transport position to the working position and vice versa, make sure that nobody is within the machine pivoting area. Remote controlled components Danger of crushing and shearing can exist when components are operated by hydraulic or pneumatic controls.
  • Page 17 Power harrows HR303D/M Precautions for maintenance and repair work Before leaving tractor 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 18 Power harrows HR303D/M 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. Stones and other foreign objects projected by the moving parts can travel a considerable distance.

  • Page 19: Location And Description Of Safety Decals On The Machine

    Power harrows HR303D/M 3. Location and description of safety decals on the machine Location of safety decals Safety...
  • Page 20 Power harrows HR303D/M Description of safety decals Operating instructions (1) The operator's 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) Before leaving tractor before adjusting,...
  • Page 21 Power harrows HR303D/M Rotary tools 4 Keep away from rotary elements and from the machine all the time the engine is running, the PTO drive is engaged and the rotors are turning. Do not step on the machine (5) Do not step on the machine: Risk of falling or damaging the protection device.

  • Page 22: Road Safety Equipment And Recommendations

    Power harrows HR303D/M 4. Road safety equipment and recommendations The road safety equipment is mounted in the factory or by your authorized dealer according to current safety regulations. Always keep to the legal speed limit for driving a tractor-machine assembly on public roads. The rear safety device comprises: - 2 red reflectors (1).

  • Page 23: Machine Specifications

    Power harrows HR303D/M $MACHINE SPECIFICATIONS 1. Description and glossary Gearbox Roller Scraper bar Anti-ridging plate Side deflector Blade lower links Blade holder PTO shaft 10 : Trough Machine specifications...

  • Page 24: Technical Specifications

    Power harrows HR303D/M 2. Technical specifications HR303D HR303M Coupling device 3 point attachment category 2 and 3 PTO speed 1000 min Number of rotors Number of blades right / left 10 / 10 Working width 3.00 m (9’9’’) Working depth from 30 to 250 mm (1.18’’...

  • Page 25: Required Equipment

    Power harrows HR303D/M 3. Required equipment Cardan drive The machines are factory fitted with one of the following PTO shafts: (Part no. 4600547) 1 3/8’’ - 6 spline pto shaft. (Part no. 4600548) 1 3/8’’ - 21 spline pto shaft. (Part no.
  • Page 26 Power harrows HR303D/M Rollers The roller is used as a protection device at the rear of the machine. It must never be removed for work. The roller is an essential element of the harrow and has following 4 functions: - Set and control the working depth. - To pack the soil evenly behind the rotors to create an optimum seedbed.
  • Page 27 Power harrows HR303D/M Packer PK2 roller: Kit no. 1237010 The Packer PK2 roller is adapted to soils which are subject to capping or very clayey and sticky. The roller is fitted with a scraper bar. Scraper plates are located between the rows of studs to ensure roller cleaning. Maxipacker roller: Kit no.

  • Page 28: Sound Levels

    NF EN 1553 "Agricultural machinery - Self-propelled, mounted, semi-mounted and trailed - Common safety recommendations" Weighted equivalent continuous acoustic pressure level at the driver's seat (closed cabin) L (A) eq: Tractor only: HR303D HR303M 78.2 dB(A) 78.2 dB(A) Tractor + machine: HR303D...

  • Page 29: Putting Into Service

    Power harrows HR303D/M $PUTTING INTO SERVICE 1. Coupling and uncoupling Description of coupling elements Category 2 linkage - 2 hitch pins diameter 28 mm (1.10’’) for the lower link arms. - A top link hitch pin diameter 25 mm (0.98’’). - A PTO shaft.
  • Page 30 Power harrows HR303D/M Parallelism of lower linkage arms Adjust tractor lift rods so that lower linkage arms are parallel to the ground. Preparing the machine Positioning of lower coupling yokes The lower coupling yokes can be placed in 2 different positions: Set back position (a): Allows to bring the machine's centre of gravity closer to the tractor when the power...
  • Page 31 Power harrows HR303D/M 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. Check that the 2 lower links have been adjusted identically.
  • Page 32 Power harrows HR303D/M - Attach top link with hitch pin. When the tractor is fitted with a standard 3 point attachment category 2, use category 2 upper hitch pins Part no. 52596900 (Factory supplied). When the tractor is fitted with a standard 3 point attachment category 3, use category 3 upper hitch pins Part no.
  • Page 33 Power harrows HR303D/M Primary PTO shaft Make sure that the PTO shaft is correctly adjusted, to avoid premature wear and tear. Separate the two half PTO shafts and connect them to the machine's input shaft and to the tractor PTO stub. Check the length of the PTO shaft: - Fully raise the machine: •...
  • Page 34 Power harrows HR303D/M 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. Immediately replace any worn or damaged guard.
  • Page 35 Power harrows HR303D/M If a foreign object gets caught in the machine: Before carrying out any maintenance or repairs on the machine, switch off the tractor engine, remove ignition key, wait until all moving parts have come to a standstill and apply park brake.
  • Page 36 Power harrows HR303D/M Fitting the cam type cut-out clutch. Regularly check that there is no play between the cam type cut-out clutch and its shaft. With the clamp cone disassembled: - Slide cam type cut-out clutch on shaft and align clamp cone housing with the shaft circular groove.
  • Page 37 Power harrows HR303D/M Spring cartridge adjusment: - Measure dimension L (Using a vernier caliper). - Note measure L in the box (only when removing clutch for the first time). The measure L is generally comprised between 51.7 and 52.5 mm (2.03’’ - 2.06’’). - Adjust measure L to the required length.
  • Page 38 37 kW (50 hp). When the rear PTO output is no longer used, remove guard (2) and reinstall guard (1). HR303M: The rear PTO output must not be used with gears disengaged (risk of gearbox damage due to lubrication defect).
  • Page 39 Power harrows HR303D/M Adjusting the machine Lateral adjustment of the lower linkage arms - Balance the play on either sides of the lift linkage and lock lower link stabilizers. Front/rear machine levelling Adjust the top link length so that the machine is horizontal with regards to the ground.
  • Page 40 Power harrows HR303D/M Rotor speed adjustment (HR303D) The rotor speed can be adjusted by inverting the standard gearwheels or by using optional gearwheel sets. - Select required rotor speed in the following chart. Refer to the decal fitted on the machine . Putting into service...
  • Page 41 Power harrows HR303D/M - Reduce top link length to slightly tilt the machine forward. - Remove screws (1) and gearbox cover (2). - Position gearwheels according to the required speed. - Clean and reassemble the unit. Check o-ring is in correct position in gearbox cover.
  • Page 42 Power harrows HR303D/M Rotor speed adjustment (HR303M) The rotor speed can be adjusted by: • Changing speed using the selector lever. • Inverting the standard gearwheels. • By using the optional gearwheel set. Select required rotor speed in the following chart: Refer to the decal fitted on the machine .
  • Page 43 Power harrows HR303D/M - Position selector lever (1) in the required position: Position (a): Gear 1 engaged. Position (b): Gear 2 engaged. - Reduce top link length to slightly tilt the machine forward. - Remove screws (1) and gearbox cover (2). Position gearwheels according to the required speed.
  • Page 44 Power harrows HR303D/M 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 (Part no. 52532130). - Maxipacker roller: •...
  • Page 45 Power harrows HR303D/M Nylon scraper plate - Packer roller: Nylon scraper plate (Part no. 52570200). - Maxipacker roller: Nylon scraper plate (Part no. 52592300). The nylon scraper plate is permanently in contact with the roller tube for cleaning it. The nylon scraper plate is particularly well suited for light, silty or chalky soils, or soils with a small amount of plant residues or stones.
  • Page 46 Power harrows HR303D/M Roller rear offset adjustment - For machines fitted with the following rollers: • Maxicrumbler roller • Packer PK2 roller • Maxipacker roller • Packliner roller The roller is mounted in position (a): It is forbidden to alter this setting. - For machines fitted with the following roller: •...
  • Page 47 Power harrows HR303D/M From the working position: - 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. - Reinstall pins (2): 1 on each machine side. - Insert roll pins (1) to lock pin: 1 on each machine side.
  • Page 48 Power harrows HR303D/M Crumbler roller adjustment The Crumbler roller consists of 8 welded tubes (1) and 8 removable rods (2). Depending on the working conditions, the rods (2) can be removed. With removable rods in place: (a) For use in dry conditions, gives fine crumbling and levelling as well as good packing.
  • Page 49 Power harrows HR303D/M Uncoupling the machine Park the machine on an even fairly level ground. When track eradicators are fitted on the machine, they must be raised before parking the machine. - Lower the tractor three-point linkage to rest the machine on the ground.

  • Page 50: Instructions For Transport

    Power harrows HR303D/M $INSTRUCTIONS FOR TRANSPORT Before placing the machine into transport position: Wait until the rotating parts have come to a complete stop. 1. Putting the machine into transport position The transport position is obtained by raising the tractor's three-point linkage.

  • Page 51: Instructions For Work

    Power harrows HR303D/M $INSTRUCTIONS FOR WORK 1. 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: Lower machine until blades are at 100 - 150 mm (3.9’’...
  • Page 52 Power harrows HR303D/M Side deflectors anti-ridging plates. Adjust side deflector anti-ridging plates according to the working depth. (See section ’’Side deflector anti-ridging plate adjustment’’). Instructions for work...

  • Page 53: Machine Use

    Power harrows HR303D/M 3. Machine use Before leaving tractor 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. - Lower machine until blades are at 100 - 150 mm (3.9’’...
  • Page 54 Power harrows HR303D/M The clod size depends on: - The rotor speed. - The forward speed. - The working depth. - the use of levelling bars (Optional equipment). - The Crumbler roller being fitted or not with removable bars. Example: large clods result from a low rotor speed and a high forward speed. Groundspeed Groundspeed must be adapted to the encountered working conditions.

  • Page 55: Optional Equipment

    Power harrows HR303D/M $OPTIONAL EQUIPMENT 1. Sets of gearwheels With this equipment, additional rotor speeds may be obtained. HR303D Kit no. 1237930 Set of 24 and 32 teeth gearwheels. Kit no. 1239130 Set of 21 and 35 teeth gearwheels. Optional equipment...
  • Page 56 Power harrows HR303D/M HR303M Kit no. 1237420 Set of 19 and 26 teeth gearwheels. Optional equipment...

  • Page 57: Standard Linkage

    Power harrows HR303D/M 2. Standard linkage Kit no. 1246020 This equipment allows an additional machine to be coupled. The equipment is composed of: • A mechanical 3-point linkage. Adjustment Overhang: - Loosen bolts (1). - Place lower link (2) in the required position. - Reinstall and tighten screws (1).

  • Page 58: Hydraulic Lift Linkage

    Power harrows HR303D/M 3. Hydraulic lift linkage Kit no. 1246030 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 is composed of: • A 3-point hydraulic attachment category 2. Lifting capacities Tractor hydraulic Overhang...
  • Page 59 Power harrows HR303D/M 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) Make sure that the additional machine rests on the ground: - Before turning off the engine - Before carrying out any maintenance or repair on the...
  • Page 60 Power harrows HR303D/M Adjustment Categories of linkage: The hydraulic attachment can be adapted for additional machines with a standard linkage category 1 or 2. - Category 1 linkage adaptation: (a) • A = 683 mm (2’2’’). - Category 2 linkage adaptation: (b) •...
  • Page 61 Power harrows HR303D/M Overhang: The combination overhang can be reduced by 220 mm (8.7’’). Position (a): Factory setting. Position (b): Maximum overhang. Position (c): Minimum overhang. - Remove bolts (1). - Place hydraulic attachment frame (2) in the required position. - Reinstall bolts (1).
  • Page 62 Power harrows HR303D/M Parking When parking the power harrow/additional machine unit, make sure that the additional machine is lowered first. Instructions for transport Putting the machine into transport position From the working position: - Uncouple the PTO shaft (between the power harrow and the additional machine).

  • Page 63: Hydraulic Lift Linkage Stroke Limiters

    Power harrows HR303D/M 4. Hydraulic lift linkage stroke limiters Kit no. 1246040 This equipment prevents damage to the PTO transmission shaft when lifting an additional implement which is PTO driven. Adjustment - Couple up the PTO shaft (between the power harrow and the additional machine).

  • Page 64: High Capacity Hydraulic Lift Linkage

    Power harrows HR303D/M 5. High capacity hydraulic lift linkage Kit no. 1239140 This equipment allows an additional machine to be coupled. The equipment is composed of: • A 3-point hydraulic attachment category 2. Lift capacity of approximately 3300 daN (7275 lbf) for a tractor pressure of 180 bar (2610 psi).
  • Page 65 Power harrows HR303D/M 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) Make sure that the additional machine rests on the ground: - Before turning off the engine - Before carrying out any maintenance or repair on the...
  • Page 66 Power harrows HR303D/M Adjustments Attachment brackets: The attachment hooks can be fitted in 3 different positions to obtain best adaptation of the additional machine. - Loosen screw (3). - Remove bolt (2) and nut (1). - Place hook (4) in the required position. - Reinstall bolt (2) and nut (1).
  • Page 67 Power harrows HR303D/M Hydraulic stroke limiting device: This device prevents damage to the PTO transmission shaft when lifting an additional implement which is PTO driven. Adjustment - Couple up the PTO shaft (between the power harrow and the additional machine). - Lift the combined machine using the rear hydraulic lift linkage: •...
  • Page 68 Power harrows HR303D/M Parking When parking the power harrow/additional machine unit, make sure that the additional machine is lowered first. Instructions for transport Putting the machine into transport position From the working position: - Remove the hydraulic attachment stroke limiter chain. - Uncouple the PTO shaft (between the power harrow and the additional machine).

  • Page 69: Track Eradicators

    Power harrows HR303D/M 6. Track eradicators The track eradicators reduce tractor wheel marks in the seedbed. The equipment is composed of: - A set of tine holders Kit no. 1238840. - A set of 2 track eradicator tines: • With traction bolt overload...
  • Page 70 Power harrows HR303D/M The track eradicators are fitted with an overload mechanism should they encounter an obstacle: - With traction bolt overload mechanism: Bolt breaks: Part no. 80131051 Nut: Part no. 80201030 - With spring overload mechanism: The track eradicator automatically regains its position after having cleared the obstacle.

  • Page 71: Front Or Rear Levelling Bar

    Power harrows HR303D/M 7. Front or rear levelling bar Kit no. 1238660 The levelling bar can fitted to the front or rear of the machine. Fitting and adjusting the levelling bars. Fit levelling bars so that their angled edges face towards the machine front (direction of travel).

  • Page 72: Lighting And Signalling

    Power harrows HR303D/M 8. Lighting and signalling The machine can be fitted with specific signalling lights to comply with the road regulations. Kit no. 1238170 Kit no. 1238950: Signalling equipment specific to Italy. 9. Front semi-automatic linkage Kit no. 1237950: Category 2 linkage.

  • Page 73: Adaptation Parts For Venta Lc

    Power harrows HR303D/M 10. Adaptation parts for VENTA LC Kit no. 1286369 This equipment enables integrating a VENTA LC seed drill to the machine. 11. Adaptation parts for VENTA AL and VENTA TI This equipment enables integrating a VENTA AL or VENTA TI to the machine.

  • Page 74: Adaptation Parts For Integra

    Power harrows HR303D/M 12. Adaptation parts for INTEGRA This equipment enables integrating a INTEGRA seed drill to the machine. Kit no. 1616350 - Floating adaptation guided by the roller (Packer PK2 roller and Maxipacker roller). Kit no. 1616363 - Floating adaptation guided by the roller (Packliner roller).

  • Page 75: Maintenance And Storage

    Power harrows HR303D/M $MAINTENANCE AND STORAGE Before leaving tractor before adjusting, maintaining repairing 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. 1.

  • Page 76: Cleaning The Machine

    Power harrows HR303D/M 2. Cleaning the machine Check regularly that there are no foreign objects wrapped around blade holder(twine, wire, crop residues,...). To prevent premature bearing housing wear, remove foreign bodies wrapped around them. - Regularly check side deflectors. - Regularly clean roller and roller scraper bar: In case of clogging, pivot scraper crossbar: Packer PK2 roller: (a) •...

  • Page 77: Lubrication

    Power harrows HR303D/M 3. Lubrication Except for the secondary PTO shaft lubrication, the machine must be placed in transport position for all maintenance operations. Clean grease nipples before greasing. Lubricate with SHELL multi-purpose grease grade NLGI 2. Primary PTO shaft Every 250 hours or at the end of the season: - U-joints (1).
  • Page 78 Power harrows HR303D/M Trough trough lubricated life with 23 kg (50.7 lb) grade NLGI 0 extreme pressure SHELL ALVANIA WR0 semi-fluid grease. Maintenance and storage...
  • Page 79 Power harrows HR303D/M Draining: Gearbox HR303D Before draining oil, operate the machine for a few minutes so that the oil warms up. The gearbox is lubricated with 6 L (1.58 US gal) of SHELL SPIRAX A extreme-pressure gear oil with viscosity grade 80W90 and API grade GL5.
  • Page 80 Power harrows HR303D/M Gearbox HR303M Before draining oil, operate the machine for a few minutes so that the oil warms up. The gearbox is lubricated with 8 L (2.11 US gal) of SHELL SPIRAX A extreme-pressure gear oil with viscosity grade 80W90 and API grade GL5.

  • Page 81: Maintenance

    Power harrows HR303D/M Grease: - Roller bearing housings. 4. Maintenance Before leaving tractor before adjusting, maintaining repairing 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 82 HR303D/M 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 degree of wear L reaches 150 mm (6’’). - When there is visible warping.
  • Page 83 Power harrows HR303D/M Blade replacement Before leaving tractor 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 - Clean the blade holder to clear the lynch pin.
  • Page 84 Power harrows HR303D/M - Replace worn blades. Blade rotating to the left (2): - Standard blade: (Part no. K2500090). - OPTIMIX blade: (Part no. K2501120). - DURAKUHN blade: (Part no. K2502240). Blade rotating to the right (1): - Standard blade: (Part no. K2500100). - OPTIMIX blade: (Part no.
  • Page 85 Power harrows HR303D/M Oil seal replacement Before removing the blade holder, mark initial direction to enable reinstalling it in the original position. Never remove several blade holders at the same time. Blade holder position Maintenance and storage...
  • Page 86 Power harrows HR303D/M - Clean the blade holder to clear the lynch pin. - Pivot lynch pin ring using unlocking key supplied with the machine (Part no. 52598210). - Remove lynch pin (1). - Remove connecting piece (2). - Loosen screw (3). - Remove washer (4).
  • Page 87 Power harrows HR303D/M - Clean and lubricate oil seal housing. - Fit seal using special tool (Part no. K2501870). The oil seal is in place when tool (8) bottoms against input shaft (9). Respect oil seal mounting direction. - Grease the input shaft before reassembling all components.

  • Page 88: Storage

    Power harrows HR303D/M 5. Storage At the end of each season - Clean the machine with a spray gun. - Check and replace worn or damaged blades. - Check and replace worn or damaged scraper plates. - Touch up paint if necessary. - Put the machine under cover in a dry place.

  • Page 89: Trouble Shooting Guide

    Power harrows HR303D/M $TROUBLE SHOOTING GUIDE Problem Cause Remedy Top link of 3-point hitch badly Position top link parallel to Noisy drive when lifting the positioned/adjusted lower linkage arms machine Excessive lifting height Limit the lift linkage stroke Lengthen or shorten top link to set the machine horizontally Machine tilted to the front or during work.
  • Page 90 Power harrows HR303D/M Machine clogging due to Rear levelling bar mounted in ground build up between rotors Remove rear levelling bar wet conditions and levelling bars Clogging of the Maxicrumbler Wet conditions, too high load use Packer PK2 roller or roller on the roller Maxipacker roller...

  • Page 91: Limited Warranty

    Power harrows HR303D/M $LIMITED WARRANTY Limited warranty...
  • Page 92 Power harrows HR303D/M Limited warranty...

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