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OPERATOR'S MANUAL
Disc mower
KN011FGB F
- English - 01-2007

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  • Page 1 OPERATOR'S MANUAL Disc mower KN011FGB F - English - 01-2007...
  • Page 3: Dear Owner

    Designated use of the machine The GMD602 GII disc mower must only be used for the purpose for which it was manufactured: mowing on the ground of hay fields, grass silage fields and improved pastures for the purpose of harvesting fodder for feeding livestock.
  • Page 4: Table Of Contents

    Disc mower GMD602 GII $CONTENTS Dear Owner........................1 Contents ......................... 2 Identification of the machine ..................4 Front view ............................4 Rear view ............................4 Model identification plate........................ 5 Optional equipment ......................... 5 Safety ..........................6 Description of symbols used in this document ................6 Safety instructions...........................
  • Page 5 Disc mower GMD602 GII Instructions for work....................34 Putting the machine into work position ..................34 Adjustments in working position ....................35 Machine use ........................... 39 Optional equipment......................40 Raised skid shoes ......................... 40 Side deflector kit..........................40 Large cone discs ........................... 40 Maintenance and storage ....................41...
  • Page 6: Identification Of The Machine

    Disc mower GMD602 GII $IDENTIFICATION OF THE MACHINE 1. Front view 2. Rear view Identification of the machine...
  • Page 7: Model Identification Plate

    Disc mower GMD602 GII 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. KUHN S.A. 67700 SAVERNE - FRANCE GMD602 GII...
  • Page 8: Safety

    Disc mower GMD602 GII $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 9: 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 10 Disc mower GMD602 GII 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.).
  • Page 11 Disc mower GMD602 GII 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 12 Disc mower GMD602 GII 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 13 Disc mower GMD602 GII 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 14 Disc mower GMD602 GII 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 15 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. Projection of stones and foreign objects For driver safety, always use a tractor equipped with a cab.
  • Page 16 Disc mower GMD602 GII 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. Keep all persons and animals away from the danger zone.
  • Page 17: Location And Description Of Safety Decals On The Machine

    Disc mower GMD602 GII 3. Location and description of safety decals on the machine Location of safety decals 59900800 59900600 599011001 59900800 Safety...
  • Page 18 Disc mower GMD602 GII 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...
  • Page 19 Disc mower GMD602 GII Manoeuvring area (5) Stay a safe distance from the machine. Crushing hazard. 59900600 Rotating cutting tools (6) Keep away from the mower knives all the time the engine is running, the PTO drive engaged and the moving parts have not come to a complete stop.
  • Page 20: Road Safety Equipment And Recommendations

    Disc mower GMD602 GII 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. The device is composed of: - A signalling light (1). - A signalling panel (2).
  • Page 21: Machine Specifications

    Disc mower GMD602 GII $MACHINE SPECIFICATIONS 1. Description and glossary Parking stand Check chain Hydraulic valve Pressure gauge Connecting frame Hitch pins Cutterbar Central gearbox Lift pump 10 : Lift/compensating cylinder 11 : Hydro-pneumatic accumulators 12 : Work/transport cylinder 13 :...
  • Page 22: Technical Specifications

    Disc mower GMD602 GII 2. Technical specifications Attachment type 3 point, Category 2 Number of discs Working width 2.4 m (7’10’’) Width in working position 4.50 m (14’9’’) Height in working position 1.40 m (4’7’’) Length in working position 1.37 m (4’6’’) Width in transport position 1.79 m (5’10’’)
  • Page 23: Putting Into Service

    Disc mower GMD602 GII $PUTTING INTO SERVICE 1. Description of control elements The machine is fitted with a release cord operated from the tractor cab. The machine is supplied with an 18 mm box wrench (1) to carry out certain adjustment and maintenance tasks.
  • Page 24 Disc mower GMD602 GII Preparing the tractor Check that the tractor's authorized gross weight as well as its lift capacity and maximum weight per axle are not surpassed. The front axle load (1) must never, under any circumstances, be less than 20% of the tractor's unladen weight.
  • Page 25 Disc mower GMD602 GII Preparing the machine Linkage adjustment - Measure dimension A. If measure A is below 2.20 m (7’33’’): - Place lower links in position a: If measure A exceeds 2.20 m (7’33’’): Place lower links in position b:...
  • Page 26 Disc mower GMD602 GII Coupling the machine - Lower the tractor three-point linkage. - Adjust levelling rods to position draft arms as close as possible below the hitch pins (A = 30-50 mm (1- 2’’) maximum). - Lift the tractor lift linkage to connect the draft arms to the hitch pins.
  • Page 27 Disc mower GMD602 GII HYDRAULIC Connections The machine hydraulic suspension circuit is pressurized at the factory. Connect the 2 hydraulic hoses of the transport/work cylinder to a double acting valve with float position. Electrical CONNECTIONS Connect 7-pin plug to the tractor.
  • Page 28 Disc mower GMD602 GII Primary PTO shaft Make sure that the PTO shaft is correctly adjusted, to avoid premature wear and tear. The tractor PTO stub must rotate at a speed of 540 min Separate the two half PTO shafts and connect them to the machine's input shaft and to the tractor PTO stub.
  • Page 29 Disc mower GMD602 GII On machine side, attach chain around the pto shaft support located between the top link yoke. Immediately replace any worn or damaged guard. Secondary PTO shaft Before adjusting, maintaining or repairing the machine, turn off ignition key and wait until all moving parts have come to a complete stop.
  • Page 30 Disc mower GMD602 GII - Tighten nuts to release the friction discs. - Rotate the torque limitor's hub a few turns. - Thread nuts away until they bottom against the threaded studs. The friction slip clutch is ready to function.
  • Page 31 Disc mower GMD602 GII Hitch pin parallelism. From the transport position: - Pull on cord to release latch. - Pressurize the transport/work position cylinder to place the mowing conditioning unit in working position. The machine takes up the headland turn position.
  • Page 32 Disc mower GMD602 GII Frame height and check chains. - Tractor fitted with a hydraulic position control function: • Lower the tractor lift linkage so that hitch pins are at a distance H = 550 mm (1’10’’) from the ground.
  • Page 33 Disc mower GMD602 GII Uncoupling the machine For tractors not fitted with a hydraulic position control function, unhook and attach check chain to its support. - Place the machine in transport position. - Release and lower parking stand (1). - Secure parking stand using lock (2).
  • Page 34: Instructions For Transport

    Disc mower GMD602 GII $INSTRUCTIONS FOR TRANSPORT Before placing the machine into transport position: Wait until the rotating parts have come to a complete stop. Check that nobody is located in the machine pivoting area. If there is someone, make sure the person moves away.
  • Page 35: Conformity With The Road Regulations

    Disc mower GMD602 GII 2. Conformity with the road regulations Before driving the machine on public roads, ensure that the machine meets current highway code regulations. Check that the signalling panel is clean and that the lighting equipment functions before going on public roads.
  • Page 36: Instructions For Work

    Disc mower GMD602 GII $INSTRUCTIONS FOR WORK 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. 1. Putting the machine into work...
  • Page 37: Adjustments In Working Position

    Disc mower GMD602 GII 2. Adjustments in working position Cutting height The desired cutting height is obtained directly by adjusting the top link length. The height can be adjusted between 30 and 80 mm (1.1’’ - 3.1’’) depending on the tractors.
  • Page 38 Disc mower GMD602 GII Ground pressure The ground pressure adjustment determins the safety breakback adjustment: Example: when the pressure in the gauges increases, the mowing unit ground pressure decreases and the breakback force increases. - The mowing unit suspension is obtained by 2 hydro- pneumatic accumulators.
  • Page 39 Disc mower GMD602 GII Pressure adjustment Increasing pressure hydro-pneumatic accumulators: - Place the machine in working position. The following adjustments do not cause the machine to move. - Open the hydraulic valve using the 18mm box spanner supplied with the machine. (Position (1)).
  • Page 40 Disc mower GMD602 GII Swathing system The swathing system comprises: - 2 swath wheels (Adjustable). The transversal adjustment (A) of the swath wheel is 5 mm (0.19’’) approximately. The angular adjustment (X) of the swath wheel is +/- 2° approximately.
  • Page 41: Machine Use

    Disc mower GMD602 GII Check that there is a minimum clearance (J) of 15 mm (0.59’’) between the cone rib and the swath wheel. 3. Machine use Before mowing and to reduce risks of projections, lower the front guard. Keep all persons and animals away from the machine danger zone.
  • Page 42: Optional Equipment

    Disc mower GMD602 GII $OPTIONAL EQUIPMENT 1. Raised skid shoes Kit no. 1076440 The raised skid shoes enable mowing higher, between 60 and 120 mm (2.4’’ - 4.8’’). Replace the end disk skids by the 2 raised skid shoes. raised...
  • Page 43: Maintenance And Storage

    Disc mower GMD602 GII $MAINTENANCE AND STORAGE Before adjusting, maintaining or repairing the machine, turn off ignition key and wait until all moving parts have come to a complete stop. 1. Frequency chart After the Every 200 first 10 Every 30...
  • Page 44: Lubrication

    Disc mower GMD602 GII 2. Lubrication Except for the secondary PTO shaft lubrication, the machine must be placed in transport position for all maintenance operations (knife replacement, lubrication, etc). Clean grease zerks before greasing. Lubricate with SHELL multi-purpose grease grade NLGI 2.
  • Page 45 Disc mower GMD602 GII Cutterbar draining and refilling. Before draining oil, operate the machine for a few minutes so that the oil warms up. The cutterbar is lubricated with 1.7 L (0.45 US gal) of SHELL SPIRAX A extreme-pressure gear oil with viscosity grade SAE 80W90 and API grade GL5.
  • Page 46 Disc mower GMD602 GII Grease the ball joint (1) of the mowing unit lift cylinder. Lubricate moving parts and articulations. Grease: - the mowing unit pivot pin (1). - the cutterbar connecting frame pivot pin (2). Maintenance and storage...
  • Page 47 Disc mower GMD602 GII Lateral gearbox draining. Before draining oil, operate the machine for a few minutes so that the oil warms up. angle gearbox lubricated with 0.7 L (0.18 US gal) SHELL SPIRAX A extreme-pressure mechanical transmissions with viscosity grade SAE 80W90 and API grade GL5.
  • Page 48 Disc mower GMD602 GII Central gearbox draining. Before draining oil, operate the machine for a few minutes so that the oil warms up. angle gearbox lubricated with 2.3 L (0.6 US gal) of SHELL SPIRAX A extreme- pressure oil for mechanical transmissions with viscosity grade SAE 80W90 and API grade GL5.
  • Page 49: Maintenance

    Disc mower GMD602 GII 3. Maintenance Before adjusting, maintaining or repairing the machine, turn off ignition key and wait until all moving parts have come to a complete stop. Hydro-pneumatic accumulators Before any work is carried out on a hydraulic circuit with hydro-pneumatic accumulator, depressurize the circuit.
  • Page 50 Disc mower GMD602 GII Basic adjustments Drive Following all service operations on the drive system, check that the distance between the side gearbox drive shaft and the upper side of the cutterbar stiffener equals +/- 4 mm (0.15’’) measure A =577 mm (1’10’’)
  • Page 51 Disc mower GMD602 GII Checking cutterbar oil level Regularly check the cutterbar oil level: • Place the cutterbar in horizontal position (with regards to X and Y axis). • Remove filler plug (1) and (2) as well as their seals.
  • Page 52 Disc mower GMD602 GII Inspection of knives and securing elements Immediately replace worn or damaged parts with genuine KUHN parts. Knives Inspect systematically all knives before the machine is operated to: • guarantee the cutting quality. • guarantee safety in use.
  • Page 53 Disc mower GMD602 GII Fixing elements Check the fixing elements: - After hitting an obstacle. - When replacing knives. - At the beginning of each season. The fixing bolts should be changed in the following cases: - When there is visible warping.
  • Page 54 Disc mower GMD602 GII Knife replacement Replace knife lock-nuts and bolts when they have been removed 5 times. Replace systematically all worn or distorted knives. Never straighten a bent knife. Always replace both knives per disc. Clean the nut case.
  • Page 55 Disc mower GMD602 GII Check if there is still a gap of 1 mm (0.04’’) between the disc lower part and the cutterbar wear plates. If this is not the case, fit one (maximum two) spacer(s) between the disc and the mounting hub (Part no.
  • Page 56: Storage

    Disc mower GMD602 GII 4. Storage At the end of each season - Clean the machine thoroughly. - Drain all gearboxes and cutterbar and refill with new oil (see "Lubrication" chapter). - Touch up paint if necessary. - Put the machine under cover in a dry place.
  • Page 57: Trouble Shooting Guide

    Disc mower GMD602 GII $TROUBLE SHOOTING GUIDE Problem Cause Remedy Dull or broken knives. Replace knives. Make sure the arrow on the Knives not installed correctly. knife upper face is pointing in Uneven stubble. the disc's direction of rotation. Too low PTO speed (rotational Increase speed to 540 min frequency).
  • Page 58 Disc mower GMD602 GII The 2 hydraulic hoses of the transport/work position cylinder are connected to a double acting valve with float position. Open the hydraulic valve using the 18mm box spanner supplied with the machine The hydraulic circuit had not...
  • Page 59: Limited Warranty

    KUHN equipment of its own manufacture from an authorized KUHN dealer, that such equipment is, at the time of delivery to such purchaser, free from defects in material and workmanship, providing the machine is used and serviced in accordance with the recommendations in the Operator's manual.
  • Page 60 - The warranty claim is submitted on a KUHN warranty claim form, and is sent to the Company (preferably via extranet - www.kuhnsa.com) within one month after the date of failure or the date of problem becoming apparent.
  • Page 64 - E-mail : info@kuhnsa.com Société Anonyme au Capital de 4 800 000 Euros KUHN KNIGHT INC P.O. Box 167 Brodhead - Wisconsin 53520 (USA) Tél. : (608) 897 - 2131 - Fax : (608) 897 - 2561 www.kuhnsa.com - E-mail : info@kuhnsa.com KUHN METASA PASSO FUNDO - RS - 99050-130 (BR) Tél.

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