KUHN GMD33 N Operator's Manual
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KUHN GMD33 N Operator's Manual

KUHN GMD33 N Operator's Manual

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OPERATOR'S MANUAL
Disc mower
KN091AGB C
- English - 12-2005

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Summary of Contents for KUHN GMD33 N

  • Page 1 OPERATOR'S MANUAL Disc mower KN091AGB C - English - 12-2005...

  • Page 3: Dear Owner

    Designated use of the machine The GMD33 N 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 GMD33 N $CONTENTS Dear Owner........................1 Contents ......................... 2 Identification of the machine ..................4 Front view ............................4 Rear view ............................4 Model identification plate........................ 5 Optional equipments ........................5 Safety ..........................6 Description of symbols used in this document ................6 Safety instructions...........................
  • Page 5 Disc mower GMD33 N Instructions for work....................34 Putting the machine into work position ..................34 Adjustments in working position ....................37 Machine use ........................... 39 Optional equipments....................40 Wear plate............................40 Hitch frame offset .......................... 40 Swath shield........................... 41 Maintenance and storage ....................42 Frequency chart..........................

  • Page 6: Identification Of The Machine

    Disc mower GMD33 N $IDENTIFICATION OF THE MACHINE 1. Front view 2. Rear view Identification of the machine...

  • Page 7: Model Identification Plate

    Disc mower GMD33 N 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. GMD33 N Type: 4. Optional equipments Tick box corresponding to the equipment fitted on your machine: Part no.

  • Page 8: Safety

    Disc mower GMD33 N $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 GMD33 N 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 GMD33 N 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 GMD33 N 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: Pto Shaft

    Disc mower GMD33 N 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: Safety Decals

    Disc mower GMD33 N 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 GMD33 N The protection covers help reducing risks of projections. Therefore, make sure that all mower protection devices are in place and good condition prior to using the machine. Regularly check the condition of the protection covers. Immediatly replace any worn, damaged or missing cover.

  • Page 17: Location And Description Of Safety Decals On The Machine

    Disc mower GMD33 N 3. Location and description of safety decals on the machine Location of safety decals Safety...
  • Page 18 Disc mower GMD33 N 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 GMD33 N Body crushing (5) Stay a safe distance from the machine. Crushing hazard. Cutting tools (6) The cutting tools and their attachment hardware meet safety and reliability criteria set by standards and by the manufacturer. For your own safety and for correct machine operation, only use original manufacturer parts.

  • Page 20: Road Safety Equipment And Recommendations

    Disc mower GMD33 N 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 rear safety device comprises: - 1 red reflector (1). The front safety device comprises: - 1 white reflector (1).

  • Page 21: Machine Specifications

    Disc mower GMD33 N $MACHINE SPECIFICATIONS 1. Description and glossary Check chain Headstock Safety breakback Gearbox Belt guard Safety cover Cutterbar Rear guard Inner guard 10 : Left pivoting lower link 11 : Suspension spring Machine specifications...

  • Page 22: Technical Specifications

    Disc mower GMD33 N 2. Technical specifications Attachment type 3 point attachment category 0 - 1N and 1 Number of discs Working width 1.20 m (4’) Width in working position 2.84 m (9’3’’) Height in working position 0.84 m (2’9’’) Length in working position 1.24 m (4’)

  • Page 23: Putting Into Service

    Disc mower GMD33 N $PUTTING INTO SERVICE 1. Description of control elements The machine is supplied with an 16 mm box wrench (1) to carry out certain adjustment and maintenance tasks. 2. Coupling and uncoupling The machine adapts to tractors fitted with a 3-point hitch coupler category 0 - 1N or 1.
  • Page 24 Disc mower GMD33 N 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: Preparing The Machine

    Disc mower GMD33 N Preparing the machine Linkage adjustment The machine adapts to tractors fitted with a 3-point hitch coupler category 0 - 1N or 1. 3 point, Category 0: - Place lower and upper links in position (a). 3 point, Category 1N: - Place lower and upper links in position (b).
  • Page 26 Disc mower GMD33 N Coupling the machine - Lower the tractor three-point linkage. - Attach lower links to the hitch pins on either sides of the machine (a). - Secure each hitch pin with lynch pin (b). - Attach top link: - (a): Category 0.
  • Page 27 Disc mower GMD33 N 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 28 Disc mower GMD33 N On machine side, attach guard chain to the headstock hole (1). Immediately replace any worn or damaged guard. Adjusting the machine Positioning of lower links - Measure dimension A. - Adjust tractor lower link stabilizers to measure A = 50 mm (2’’).
  • Page 29 Disc mower GMD33 N Frame height and check chains. • Lower the tractor lift linkage so that hitch pins are at a distance H = 380 mm (1’2’’) from the ground. • Insert hook (1) in check chain link corresponding to the required frame height and lock using roll pin (2).
  • Page 30 Disc mower GMD33 N Safety breakback On hitting an obstacle, the safety breakback causes the cutterbar to pivot rearwards. If the machine hits an obstacle, disengage the PTO drive, stop the tractor engine, remove the ignition key and wait for all moving parts to come to a complete standstill.
  • Page 31 Disc mower GMD33 N Ground adaptation The lifting device provides good ground adaptation on irregular grounds. From the working position: Make sure that there is a distance equal to approximately L = 25 mm (1’’) between the lifting device and the lower links.

  • Page 32: Instructions For Transport

    Disc mower GMD33 N $INSTRUCTIONS FOR TRANSPORT Before placing the machine into transport 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 transport...
  • Page 33 Disc mower GMD33 N - Fold up safety cover over guard frame. - Unlock rear guard using 16mm box wrench supplied with the machine (a). - Fold rear guard onto front guard (b). - Place box wrench back in its holder.
  • Page 34 Disc mower GMD33 N - Pivot cutterbar rearward behind the main frame. - Lock cutterbar using lever (1). - The transport position is obtained by raising the tractor's three-point linkage The machine is in transport position. Never engage the tractor PTO drive when the machine is in transport position.

  • Page 35: Conformity With The Road Regulations

    Disc mower GMD33 N 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 retroreflective signalling equipment is clean before going on public roads. Replace worn or damaged reflectors.

  • Page 36: Instructions For Work

    Disc mower GMD33 N $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 Disc mower GMD33 N - Lock cutterbar using lever (1). - Open strap (1). - Unfold rear guard until it locks in place. Instructions for work...
  • Page 38 Disc mower GMD33 N - Unfold safety cover around the guard frame. - Unlock left adaptation device: • Remove R-clip. • Remove lock pin (2). • Insert lock pin in one of the free holes on the top link. • Secure using R-clip.

  • Page 39: Adjustments In Working Position

    Disc mower GMD33 N 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 40 Disc mower GMD33 N Hitch frame offset A "hitch frame offset" equipment can be ordered for tractors with a wide wheel track. Positioning of lower links If the "Hitch frame offset" equipment is fitted on the machine: Balance the play on either sides of the lift linkage and lock lower link stabilizers.

  • Page 41: Machine Use

    Disc mower GMD33 N 3. Machine use Before mowing and to reduce risks of projections: - Unfold rear guard until it locks in place. - Unfold safety cover around the guard frame. - Keep all persons and animals away from the machine danger zone.

  • Page 42: Optional Equipments

    Disc mower GMD33 N $OPTIONAL EQUIPMENTS 1. Wear plate Part no. 56330210 Wear plates can be welded underneath the disc guard to improve its resistance to wear in difficult working conditions. 2. Hitch frame offset Kit no. 1007030 A "hitch frame offset" equipment can be ordered for tractors with a wide wheel track.

  • Page 43: Swath Shield

    Disc mower GMD33 N 3. Swath shield Kit no. 1007010 The outer swath shield enables improving the swath quality depending on the crop density. The swath shield can be adjusted in 3 different positions. Adjustment - Loosen screw (1). - Remove screw (2).

  • Page 44: Maintenance And Storage

    Disc mower GMD33 N $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 Every 200 hours or After the first 10...

  • Page 45: Lubrication

    Disc mower GMD33 N 2. Lubrication Clean grease nipples before greasing. Lubricate with SHELL multi-purpose grease grade NLGI 2. PTO shaft Primary PTO shaft - Every 8 hours: • universal joints (1). - Every 20 hours: • transmission tube (2).
  • Page 46 Disc mower GMD33 N 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 1.30 L (0.34 US gal) of SHELL SPIRAX extreme-pressure gear oil with viscosity grade SAE 80W90 and API grade GL5.
  • Page 47 Disc mower GMD33 N Changing angle gearbox oil Before draining oil, operate the machine for a few minutes so that the oil warms up. The angle gearbox is lubricated with 0.20 L (0.42 US pints) of SHELL SPIRAX extreme-pressure oil for mechanical transmissions with viscosity grade SAE 80W90 and API grade GL5.

  • Page 48: Maintenance

    Disc mower GMD33 N 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. Belt tension Regularly check belt tension and in particular during the first hours of use.
  • Page 49 Disc mower GMD33 N Adjusting the tension: - Unscrew the 4 nuts (2). - Tighten screw (1) to tension belts. - Check belt tension. - Tighten the 4 nuts (2). • Torque: 13 daN m (96 lbf ft). Breather plug checking and cleaning The draining/filling plug also serves as breather plug.
  • Page 50 Disc mower GMD33 N 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 its washer. - Through filling hole, check that the oil level (h) is comprised between 7 and 8 mm (0.27’’...
  • Page 51 Disc mower GMD33 N 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 52 Disc mower GMD33 N 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 53: Disc Replacement

    Disc mower GMD33 N 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 54 Disc mower GMD33 N When remounting: Position conical centre of dust seal (3) at the bottom. Position their largest diameters at right angles to each other. Position conical centre of spring washer at the top. Place a wooden wegde (2) between two discs to stop them from moving.

  • Page 55: Storage

    Disc mower GMD33 N When replacing the outer cone, make sure to reinstall the cap. 4. Storage At the end of each season - Clean the machine thoroughly. - Drain gearbox and cutterbar and refill with new oil: See section ’’Lubrication’’.

  • Page 56: Trouble Shooting Guide

    Disc mower GMD33 N $TROUBLE SHOOTING GUIDE Problem Cause Remedy Adjust cutterbar angle: See Machine tilted to the front or section ’’Adjustments in rear (excessive pitch angle). working position’’. Dull or broken knives. Replace knives. Uneven stubble. Make sure the arrow on the Knives not installed correctly.

  • Page 57: Limited Warranty

    Disc mower GMD33 N $LIMITED WARRANTY Limited warranty...
  • Page 58 Disc mower GMD33 N Limited warranty...

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