KUHN GA4521GTH Operator's Manual
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KUHN GA4521GTH Operator's Manual

Gyrorake
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OPERATOR'S MANUAL
KN143BGB E
Gyrorake
- English - 11-2009
KN143BGB E

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  • Page 1 OPERATOR'S MANUAL KN143BGB E Gyrorake - English - 11-2009 KN143BGB E...

  • Page 3: Dear Owner

    Designated use of the machine The GA4521GTH Gyrorake must only be used for the work for which it has been designed: raking on the ground and forming windrows of pre-mowed fodder and straw. Document illustrations The illustrations in this manual may be based on one type of machine only.

  • Page 4: Table Of Contents

    Gyrorake GA4521GTH $Contents Dear Owner ........................1 Contents..........................2 Identification of the machine..................4 Front view (working position) ......................4 Rear view (working position)......................4 Model identification plate ........................5 Optional equipment..........................5 Safety..........................6 Description of symbols used in this document................6 Safety instructions ...........................7 Location and description of safety decals on the machine ............15 Road safety equipment and recommendations................18...
  • Page 5 Gyrorake GA4521GTH Instructions for work ....................32 Putting the machine into work position ..................32 Adjustments in working position....................34 Machine use............................ 37 Optional equipment ..................... 38 Safety chain ............................ 38 Prop wheel ............................40 Hydraulic windrow curtain ......................41 Maintenance and storage....................

  • Page 6: Identification Of The Machine

    Gyrorake GA4521GTH $Identification of the machine 1. Front view (working position) 2. Rear view (working position) Identification of the machine...

  • Page 7: Model Identification Plate

    Gyrorake GA4521GTH 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. GA4521GTH Type: Serial no.: 4. Optional equipment Tick box corresponding to the equipment fitted on your machine: Kit no.

  • Page 8: Safety

    Gyrorake GA4521GTH $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 Gyrorake GA4521GTH 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 defenders, etc.). Ensure that all operating controls (ropes, cables, rods, etc) are placed so as they cannot be operated unintentionally and cause damage or injury.
  • Page 11 Gyrorake GA4521GTH 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 transportation of oversize equipment.
  • Page 12 Gyrorake GA4521GTH 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 Gyrorake GA4521GTH 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 Gyrorake GA4521GTH 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 Gyrorake GA4521GTH Precautions for machine use Before using the machine, check tools (tines) and their attachment hardware in accordance with the instructions of the present manual. Check the guards regularly. Immediately replace any damaged or missing elements. Before engaging the pto drive, lower the rotors onto the ground.

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

    Gyrorake GA4521GTH 3. Location and description of safety decals on the machine Location of safety decals Safety...
  • Page 18 Gyrorake GA4521GTH 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) Before leaving tractor...
  • Page 19 Gyrorake GA4521GTH Power take-off (5) When guards are in transport position, the rotor is locked. Do not engage the PTO drive. Safety...

  • Page 20: Road Safety Equipment And Recommendations

    4. 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 21: Machine Specifications

    Gyrorake GA4521GTH $Machine specifications 1. Description and glossary Drawbar Parking stand Rotor undercarriage and wheels Rotor Tine arms Swath screen Tine arm rack Pitch angle adjustment handle Machine specifications...

  • Page 22: Technical Specifications

    Gyrorake GA4521GTH 2. Technical specifications GA4521GTH Attachment type Drawbar coupled to the tractor hitch bar Number of rotors Rotor diameter 3.65 m (11’11’’) Number of arms per rotor Number of tines per arm Swath width 1.4 m (4’7’’) approximately Working width (DIN 11220) up to 4.50 m (14’9’’)

  • Page 23: Putting Into Service

    Gyrorake GA4521GTH $Putting into service 1. Coupling and uncoupling Description of coupling elements - A PTO shaft 1 3/8’’ 6 splines. - An electric 7-pin plug for the signalling equipment. - A parking stand. - 1 hydraulic hose with a 2 position shut-off valve pressurizing the machine transport/work position cylinder.
  • Page 24 Gyrorake GA4521GTH Drawbar height adjustment - Turn parking stand crank to bring the drawbar in line with the tractor's pullbar. Coupling the machine - Couple machine to tractor and secure hitch pin (1). - Raise parking stand (1) using crank (2).
  • Page 25 Gyrorake GA4521GTH Hydraulic connection - Connect hydraulic hose to a single acting spool valve. Position a: Circuit open. Position b: Circuit closed. When optional equipment is used, follow specific procedures mentioned in the related section: - Hydraulic windrow curtain. Electrical connections Connect 7-pin plug to the tractor.
  • Page 26 Gyrorake GA4521GTH Primary PTO shaft Make sure that the PTO shaft is correctly adjusted, to avoid premature wear and tear. The tractor nominal PTO speed must be 540 min Separate the two half PTO shafts and connect them to the machine's input shaft and to the tractor PTO stub.
  • Page 27 Gyrorake GA4521GTH 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 28 Gyrorake GA4521GTH Uncoupling the machine Park the machine on an even fairly level ground. Uncouple the machine in work or transport position. From the transport position: - Open hydraulic hose valve of the cylinder setting the transport/work position. Position a: Circuit open.
  • Page 29 Gyrorake GA4521GTH - Remove specific pin (3). (Pin with automatic locking mechanism). - Install parking stand (1) on drawbar. - Lock parking stand using specific pin. - Adjust parking stand height using crank handle (2). When optional equipment is used, follow specific procedures mentioned in the related section : - Safety chain.

  • Page 30: Instructions For Transport

    Gyrorake GA4521GTH $Instructions for transport 1. Putting the machine into transport Before placing the machine into transport position: - Wait until the rotating parts have come to a complete stop. - Check that nobody is within the machine pivoting area.
  • Page 31 Gyrorake GA4521GTH Before folding side guards: - Rotate rotor by hand until non-disconnectable tine arms are positioned to the front on each side of the beam. - Pull on handles (2) to unlock the side guards. - Fold and lock guards (1).
  • Page 32 Gyrorake GA4521GTH - Remove lynch pins (1). - Disconnect tine arms (2). 3 non disconnectable tine arms (1) are not removed. - Position tine arms (2) on racks (3). - Secure tine arms with lynch pins. Instructions for transport...

  • Page 33: Conformity With The Road Regulations

    Gyrorake GA4521GTH - Activate tractor single acting valve to fully raise the machine. - Shut-off hydraulic hose valve of cylinder setting the machine in transport/work position. Position a: Circuit open. Position b: Circuit closed. The machine is in transport position.

  • Page 34: Instructions For Work

    Gyrorake GA4521GTH $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 position...
  • Page 35 Gyrorake GA4521GTH - Release windrow curtain lock (1). - Position windrow curtain (2) towards the machine outside. - Lower lock (1) to lock windrow curtain. The machine is in working position. Instructions for work...

  • Page 36: Adjustments In Working Position

    Gyrorake GA4521GTH 2. Adjustments in working position Before manoeuvring the machine: - Check that nobody is within the machine pivoting area. - If there is someone, make sure the person moves away. - Activate single acting valve to lower the machine until the tines slightly skim the ground.
  • Page 37 Gyrorake GA4521GTH Windrow curtain adjustment There are 3 windrow curtain adjustment possibilities. When optional equipment is used, follow specific procedures mentioned in the related section: - Hydraulic windrow curtain. Swath width adjustment: - Release windrow curtain lock (1). - Adjust windrow curtain position.
  • Page 38 Gyrorake GA4521GTH Vertical adjustment: The windrow curtain can be adjusted in different positions: - High position. - Central position. - Low position. • The upper position is used in very irregular grounds or in very dense crop. • The low position is used in low density crop In most cases, position windrow curtain in the central position.

  • Page 39: Machine Use

    Gyrorake GA4521GTH 3. Machine use Before engaging the tractor PTO drive: - Keep all persons and animals away from the machine danger zone. - Lower and lock side guards. - Place the machine in working position. Before the machine engages the crop: - Engage the tractor PTO drive and accelerate progressively up to the desired PTO speed.

  • Page 40: Optional Equipment

    Gyrorake GA4521GTH $Optional equipment 1. Safety chain Kit no. 1116860. The safety chain is intended to keep the machine under control in the event of a loss or failure of the hitch pin. Coupling the machine - Couple machine to tractor and secure hitch pin (1).
  • Page 41 Gyrorake GA4521GTH The safety chain must be tied around a tractor attachment point other than the attachment bar. Optional equipment...

  • Page 42: Prop Wheel

    Gyrorake GA4521GTH 2. Prop wheel Kit no. 1146600 The prop wheel provides better adaptation to irregular ground contours. The prop wheel can be fitted either on the right or left side of the front frame. Machine use - Place the machine in working position.

  • Page 43: Hydraulic Windrow Curtain

    Gyrorake GA4521GTH 3. Hydraulic windrow curtain Kit no. 1136420 This equipment allows windrow width adjustment as from the tractor cabin. Preparing the tractor The tractor must be equipped with : - 1 double acting hydraulic outlet. Hydraulic connection - Connect hydraulic hoses (1) and (2) to the same tractor hydraulic double outlet.
  • Page 44 Gyrorake GA4521GTH Before folding side guards: - Rotate rotor by hand until non-disconnectable tine arms are positioned to the front on each side of the beam. - Pull on handles (2) to unlock the side guards. - Fold and lock guards (1).
  • Page 45 Gyrorake GA4521GTH - Remove lynch pins (1). - Remove tine arms (2). 3 non disconnectable tine arms (1) are not removed. - Position tine arms (2) on racks (3). - Secure tine arms with lynch pins. Optional equipment...
  • Page 46 Gyrorake GA4521GTH - Activate tractor single acting valve to fully raise the machine. - Shut-off hydraulic hose valve of cylinder setting the machine in transport/work position. Position a: Circuit open. Position b: Circuit closed. The machine is in transport position.
  • Page 47 Gyrorake GA4521GTH - Open hydraulic hose valve of the cylinder setting the transport/work position. - Activate the transport/work cylinder control valve in the "pivot into work" position. - Lower machine until undercarriage is fully retracted. Position a: Circuit open. Position b: Circuit closed.
  • Page 48 Gyrorake GA4521GTH Adjustments: Swath width adjustment: windrow width adjustment transport/work position setting are controlled by the same double acting valve. With the windrow curtain in raised position: - Operate the double acting valve to place the windrow curtain in required position.
  • Page 49 Gyrorake GA4521GTH Vertical adjustment: The windrow curtain can be adjusted in different positions: - High position. - Central position. - Low position. • The upper position is used in very irregular grounds or in very dense crop. • The low position is used in low density crop In most cases, position windrow curtain in the central position.

  • Page 50: Maintenance And Storage

    Gyrorake GA4521GTH $Maintenance and storage 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. 1. Frequency chart Maintenance intervals are indicated for normal conditions of use.

  • Page 51: Lubrication

    Gyrorake GA4521GTH 2. Lubrication The pictorials show the points to be greased (Part no. 099054002). Clean grease nipples before greasing. Lubricate with SHELL multi-purpose grease grade NLGI 2. Lubricate with SHELL SAE 90 EP (GL4) gear oil. Intermediate PTO shaft - Every 8 hours: •...
  • Page 52 Gyrorake GA4521GTH Lubricate the following parts: Lubricate with SHELL multi-purpose grease grade NLGI 2. Grease: Lubrication intervals are indicated for normal conditions of use. - Rotor gears (1). - Rotor arm housings (1). In difficult or intensive work conditions, reduce greasing intervals of rotor arm housings.
  • Page 53 Gyrorake GA4521GTH - Clean and grease removable tine arm ends (1) with never-seize grease each time it becomes difficult to disconnect them. - The pitch angle adjustment handle and its pivot pin. Maintenance and storage...

  • Page 54: Maintenance

    Gyrorake GA4521GTH 3. Maintenance Check thighteness of all bolts and nuts, particularly on rotors. 4. Storage At the end of each season Avoid high pressure water jets on rotor and pivot points. - Clean the machine thoroughly. - Put the machine under cover in a dry place.

  • Page 55: Trouble Shooting Guide

    Gyrorake GA4521GTH $Trouble shooting guide Problem Cause Remedy Poor raking over the whole Tines too far from the ground Adjust wheel height rotor width Adjust wheel height to obtain Poor raking on one side of Rotor tilted towards the opposite...

  • Page 56: Limited Warranty

    Gyrorake GA4521GTH $Limited warranty Limited warranty...
  • Page 57 Gyrorake GA4521GTH Limited warranty...

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