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Summary of Contents for KUHN GA4121GM
- Page 1 OPERATOR'S MANUAL KN129DGB D Read carefully before starting the machine Gyrorake Original instructions - English - 04-2018 KN129DGB D...
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Page 3: Dear Owner
Nevertheless, the service life depends highly on the conditions of use (products to handle, soil, weather conditions, etc...). Designated use of the machine The GA4121GM 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 GA4121GM 2. Contents Dear Owner ........................1 Contents ..........................2 Identification of the machine..................5 Front view ............................5 Rear view ............................5 Model identification plate ......................... 6 Optional equipment.......................... 7 Safety..........................8 Description of symbols used in this document................. 8 Safety instructions ........................... 9 4.2.1... - Page 5 Gyrorake GA4121GM Putting into service...................... 26 Coupling and uncoupling ....................... 26 6.1.1 Description of coupling elements ..................26 6.1.2 Preparing the tractor......................26 6.1.3 Coupling the machine....................... 28 6.1.4 Primary PTO shaft ......................30 6.1.5 Hydraulic connections ...................... 31 6.1.6 Electrical connections.......................
- Page 6 Gyrorake GA4121GM Lateral signalling equipment ......................60 Europe signalling equipment ......................60 9.8.2 Fitting..........................61 9.8.3 Electrical connection......................61 USA signalling equipment......................62 9.9.1 Coupling and uncoupling ....................62 10. Maintenance and storage ....................63 10.1 Frequency chart ..........................63 10.2 Lubrication .............................
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Page 7: Identification Of The Machine
Gyrorake GA4121GM 3. Identification of the machine Front view Rear view 3. - Identification of the machine KN129DGB D... -
Page 8: Model Identification Plate
Gyrorake GA4121GM 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. KUHN S.A. 67700 SAVERNE - FRANCE TYPE N°... -
Page 9: Optional Equipment
Gyrorake GA4121GM Optional equipment - Tick box corresponding to the equipment fitted on your machine: 1 3/8 - 6 spline pto shaft. 1 3/8 - 6 spline wide angle u-joint drive. Front support wheel. Bogie axles. -
Page 10: Safety
Gyrorake GA4121GM 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 11: Safety Instructions
Never let anyone operate the machine who is not trained to do so. Should you have any difficulties in understanding any parts of this manual, please contact your KUHN dealer. 4.2.3 Precautions to be taken before carrying out any operations on the machine... -
Page 12: Precautions To Take Before Using The Machine
Gyrorake GA4121GM 4.2.4 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.). -
Page 13: Precautions When Driving On Public Roads
Gyrorake GA4121GM 4.2.6 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 14 Gyrorake GA4121GM 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 all criteria are met to be in conformity with the...
- Page 15 Gyrorake GA4121GM How to proceed: Stage 1: To measure: - Tractor tare (T). T = _____kg Stage 2: - Couple the machine to the tractor. To measure: - Load on front axle (t1): • Tractor + machine (transport position). To do:...
- Page 16 Gyrorake GA4121GM Stage 3: To measure: - Total weight (t): • Tractor + machine (transport position). • Ballast weights. Checking: - To go to the next stage: • Check in the tractor's operator's manual that the value measured is below the tractor's Gross Combined Weight Rating.
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Page 17: Pto Shaft
Gyrorake GA4121GM 4.2.7 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 18 Gyrorake GA4121GM Do not install any adapter device that results in a portion of the tractor PTO stub, the rotating PTO shaft, or the adapter to be unguarded. The tractor master shield shall overlap the end of the splined shaft and the added adaptor device as outlined in the table.
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Page 19: Precautions During Manoeuvres
Gyrorake GA4121GM 4.2.8 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. 4.2.9 Remote controlled components Danger of crushing and shearing can exist when components are operated by hydraulic or pneumatic controls. -
Page 20: 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.). 4. - Safety... -
Page 21: Projection Of Stones And Foreign Objects
Gyrorake GA4121GM 4.2.14 Projection of stones and foreign objects For driver safety, always use a tractor equipped with a cab. Never start a gyrorake when there are people nearby. Even when the machine is used in accordance with its purpose, objects may be projected. -
Page 22: Location And Description Of Safety Decals On The Machine
Gyrorake GA4121GM Location and description of safety decals on the machine 4.3.1 Location of safety decals 4. - Safety KN129DGB D... -
Page 23: Description Of Safety Decals
Gyrorake GA4121GM 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 24 Gyrorake GA4121GM Rotary tools (4) To prevent entanglement keep a safe distance from the machine. Power take-off (5) When guards are in transport position, the rotor is locked. Do not engage the PTO drive. 4. - Safety KN129DGB D...
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Page 25: Machine Specifications
Gyrorake GA4121GM 5. Machine specifications Description and glossary Front frame Parking stand Rotor undercarriage and wheels Rotor Tine arms Swath screen Assist spring Three-point hitch coupler 5. - Machine specifications KN129DGB D... -
Page 26: Technical Specifications
Gyrorake GA4121GM Technical specifications GA4121 GM Coupling device 3 point linkage category 1 and 2 Number of rotors Rotor diameter 3.20 m (10’6’’) Number of arms per rotor Number of tines per arm Swath width 1.30 m (4’3’’) (approximately) Working width (DIN 11220) up to 4.10 m (13’5’’) -
Page 27: Required Equipment
Gyrorake GA4121GM Required equipment The machine is factory fitted with the following equipment: 5.3.1 Primary PTO shaft The machines are factory fitted with one of the following PTO shafts: • PTO shaft 1 3/8’’ - 6 splines. • A 1 3/8 - 6 spline wide angle pto shaft. -
Page 28: Putting Into Service
Gyrorake GA4121GM 6. Putting into service Coupling and uncoupling 6.1.1 Description of coupling elements • A PTO shaft (1). • A parking stand (2). • An electric 7-pin plug for the signalling equipment (optional equipment). 6.1.2 Preparing the tractor Check that the tractor's authorized gross... - Page 29 Gyrorake GA4121GM - Select speed of 540 min on the tractor. Position the machine on level hard ground. Tyre pressure - Check tyre pressure (Left side = Right side). Hitch pin parallelism - Adjust tractor lift rods so that hitch pins are parallel to the ground.
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Page 30: Coupling The Machine
Gyrorake GA4121GM 6.1.3 Coupling the machine - Lower the tractor three-point linkage. - Position tractor lower links in line with machine lower yokes. Categories of linkage For attachment category 1: - Place lower links in position (a). - Secure each lower link with lynch pin. - Page 31 Gyrorake GA4121GM - Attach the top link to the machine top hitch pin. - Secure with R-clip. - Adjust the top link length so that the machine is horizontal with regards to the ground. - Lower transport lock (1). - Lift the machine using the tractor lift linkage until the parking stand no longer rests on the ground: •...
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Page 32: Primary Pto Shaft
Gyrorake GA4121GM 6.1.4 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 33: Hydraulic Connections
Gyrorake GA4121GM 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 34: Electrical Connections
Gyrorake GA4121GM 6.1.6 Electrical connections When optional equipment is used, follow specific procedures mentioned in the related section: • Optional equipment Lighting signalling. 6.1.7 Uncoupling the machine Park the machine on an even fairly level ground. From the transport position: - Lift transport lock (1). - Page 35 Gyrorake GA4121GM - Disconnect the PTO shaft from the tractor. - Secure PTO shaft into its' support (1). When optional equipment is used, follow specific procedures mentioned in the related section: • Optional equipment Lighting signalling. - Uncouple lower linkage arms.
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Page 36: Instructions For Transport
Gyrorake GA4121GM 7. 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 within the machine pivoting area. - If there is someone, make sure the person moves away. - Page 37 Gyrorake GA4121GM Before folding side guards: - Rotate rotor by hand until non-disconnectable tine arms are positioned to the front on each side of the beam. - Unlock right side guard (1) using handle (2) and raise swath screen (3) and right side guard (1) until automatically locked.
- Page 38 Gyrorake GA4121GM - Unlock left side guard (1) using handle (2) and lift left side guard upwards until it automatically locks. The folding of the side guards activates the rotor pre-locking by means of link rods (1). - Rotate rotor by hand until fully locked with rotor lock (2).
- Page 39 Gyrorake GA4121GM 2 non disconnectable tine arms (1) are not removed. - Position tine arms (2) on racks (3). - Secure tine arms with lynch pins (4). - Lower transport lock (1). - Lift the machine with the tractor's three point linkage: •...
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Page 40: Conformity With The Road Regulations
Gyrorake GA4121GM Conformity with the road regulations Before driving the machine on public roads, ensure that the machine complies with current highway code regulations. - Always keep to the legal speed limit for driving a tractor-machine assembly on public roads. -
Page 41: Instructions For Work
Gyrorake GA4121GM 8. 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. Putting the machine into work position... - Page 42 Gyrorake GA4121GM - Unlock right side guard (1) using handle (2) and lower right side guard and swath screen. When optional equipment is used, follow specific procedures mentioned in the related section: • Optional equipment / Hydraulic windrow curtain. - Unlock left side guard (1) using handle (2) and lower it.
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Page 43: Adjustments In Working Position
Gyrorake GA4121GM 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. When optional equipment is used, follow specific procedures mentioned in the related section: •... - Page 44 Gyrorake GA4121GM - Engage pin (1) in one of the 7 holes (2) corresponding to the required setting. Basic adjustment: • Position pin (1) in the fifth hole (3) of vertical adjustment plate. Make sure pin (1) is fully engaged.
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Page 45: Swath Screen Adjustment
Gyrorake GA4121GM 8.2.2 Swath screen adjustment There are 3 windrow curtain adjustment possibilities: • Lateral adjustment. • Lengthways adjustment. • Vertical adjustment. Lateral adjustment - Turn swath screen lock (1) counterclockwise. - Operate handle (2) to adjust swath screen position. - Page 46 Gyrorake GA4121GM In very dense crop, the machine can form single swaths. In light crop, the machine can form double swaths. 8. - Instructions for work KN129DGB D...
- Page 47 Gyrorake GA4121GM Lengthways adjustment The lengthways adjustment is combined with the sideways adjustment. The windrow curtain can be set forwards or backwards according to the crop density and the windrow width adjustment. The forward position is used for green fodder and narrow windrows.
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Page 48: Machine Use
Gyrorake GA4121GM 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 49: Optional Equipment
Gyrorake GA4121GM 9. Optional equipment 1 3/8 - 6 spline pto shaft A specific pto shaft is available as option for tractors equipped with a 1 3/8’’ - 6 spline pto stub. 1 3/8 - 6 spline wide angle u-joint... -
Page 50: Fitting
Gyrorake GA4121GM 9.3.1 Fitting - Fit the wheel support assembly on the right side of the hitch frame crossbar (1) using 4 screws (2) and 4 nuts (3). - Tighten screws: • Torque: 8.5 daN.m (63 lbf ft). 9.3.2 Adjustments ... - Page 51 Gyrorake GA4121GM To prevent running over the crop when grouping windrows: - Move support wheel sideways on hitch frame crossbar (3). Height adjustment - Move column (1) in mounting bracket (2). - Insert the pin (3) in one of the holes (4).
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Page 52: Bogie Axles
Gyrorake GA4121GM Putting the machine into work position - Fit hitch frame top hitch pin in oblong hole (3) of connecting rod (4). On level ground, the hitch pin must be positioned approximately in the middle of the oblong hole. -
Page 53: Machine Use
Gyrorake GA4121GM - Fit the roll pins (1) on original wheel support (2) using washer (3) and nut (4). - Tighten nut (4). - Fit curved greaser (5). - Fit bogie axle (6) on original support (2). - Insert split pin (7) and tube clip (8) and connect them using link (9). -
Page 54: Lubrication
Gyrorake GA4121GM 9.4.3 Lubrication Every 50 hours Grease: • Pivot points. Three point frame damper The stabilizer (1) is recommended for work on irregular grounds or slopes. 9.5.1 Fitting If there is a red dot on the stabilizer body, it must be pointing downwards. -
Page 55: Hydraulic Windrow Curtain
Gyrorake GA4121GM Hydraulic windrow curtain This equipment allows windrow width adjustment as from the tractor cabin. 9.6.1 Preparing the tractor The tractor must be fitted with the following components: • 1 double acting hydraulic outlet. 9.6.2 Hydraulic connections - Connect hydraulic hoses (1) and (2) to the same tractor hydraulic double outlet. - Page 56 Gyrorake GA4121GM 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 release cord until stop pins are released (1). - Activate double acting valve to raise guards (2).
- Page 57 Gyrorake GA4121GM - 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 (4). The machine is in transport position.
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Page 58: Putting The Machine Into Work Position
Gyrorake GA4121GM 9.6.4 Putting the machine into work position From the transport position: - Lower machine using tractor lift linkage without wheels touching the ground. - Remove lynch pin from tine arms stored on racks. - Fit tine arms on the rotor. -
Page 59: Adjustments
Gyrorake GA4121GM - Operate the double acting valve to pivot the windrow curtain in working position. The tractor lift linkage must be in floating position. The machine is in working position. 9.6.5 Adjustments Swath width adjustment The windrow width adjustment and transport/work position setting are controlled by the same double acting valve. - Page 60 Gyrorake GA4121GM In light crop, the machine can form double swaths. 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.
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Page 61: Maintenance
Gyrorake GA4121GM To adjust the windrow curtain: - Remove bolts (1). - Adjust swath screen position. - Reinstall bolts (1): • Torque: 4.9 daN m (36 lbf ft). 9.6.6 Maintenance Lubricate with SAE 90 EP (GL4) gear oil. Oil: • Cylinder pins. -
Page 62: Lateral Signalling Equipment
Gyrorake GA4121GM Lateral signalling equipment The machine can be fitted with specific signalling lights to comply with the road regulations. The side device is made up of the following components: • 2 signalling panels (1). • 2 amber reflectors (2). -
Page 63: Fitting
Gyrorake GA4121GM 9.8.2 Fitting - Fit the two supports (1) of reflective panels (2) on hinges (3) using 4 screws (4), 4 washers (5) and 4 nuts (6). - Fit reflective panels (2) on supports (1) using 6 screws (7) and 6 nuts (8). -
Page 64: Usa Signalling Equipment
Gyrorake GA4121GM USA signalling equipment 9.9.1 Coupling and uncoupling Electrical connection - Connect 7-pin plug to the tractor. Parking - Disconnect and store 7-pin plug in its holder. 9. - Optional equipment KN129DGB D... -
Page 65: Maintenance And Storage
Gyrorake GA4121GM 10. 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. Check that hydraulic hose valves are shut- off. -
Page 66: Lubrication
Gyrorake GA4121GM 10.2 Lubrication 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. The pictorials show the points to be greased. -
Page 67: Rotor
Gyrorake GA4121GM 10.2.2 Rotor The reduction gearbox is lubricated for life with 1.2 kg (2.6 lb) of multi-purpose semi-fluid grease grade NLGI 0. The guiding cam is lubricated for life with multi- purpose grease NLGI 2. 10.2.3 Grease Lubricate with multi-purpose grease grade NLGI 2. -
Page 68: Oil
Gyrorake GA4121GM • Wheel supports (2 greasers) (1). - Clean and grease removable tine arm ends (1) with never-seize grease each time it becomes difficult to disconnect them. 10.2.4 Oil Lubricate with SAE 90 EP (GL4) gear oil. • Pivot points. -
Page 69: Maintenance
Gyrorake GA4121GM 10.3 Maintenance 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. Check that hydraulic hose valves are shut- off. -
Page 70: Storage
Gyrorake GA4121GM 10.4 Storage 10.4.1 At the end of each season Avoid high pressure water jets on rotor and pivot points. When optional equipment is used, follow specific procedures mentioned in the related section: • Optional equipment / Hydraulic windrow curtain. -
Page 71: Troubleshooting Guide
Gyrorake GA4121GM 11. Troubleshooting guide Problem Cause Remedy Poor raking over the Tines too far from the Adjust wheel height. whole rotor width. ground. Adjust wheel height to obtain Poor raking on one side Rotor tilted towards the same tine/soil distance on both of the rotor. -
Page 72: Appendix
Gyrorake GA4121GM 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 The load on the tractor front axle must always represent 20 % of the tractor unladen weight. - Page 73 Gyrorake GA4121GM 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 74 Gyrorake GA4121GM Front tool: 2) Calculation of the minimum rear ballast weight M2 minimum M1 x a - T2 x b + 0.45 x T x b minimum = b+c+d Write the minimal additional weight in the chart. 3) Calculation of the actual load on the front axle T1...
- Page 75 Gyrorake GA4121GM 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 76 Gyrorake GA4121GM Determining the machine weight (M2) and the position of its centre of gravity (d) If the data required to calculate the total weight, axle loads and minimum ballasting are not supplied, use the following method. - Tractor only: - T1: Load on front axle.
- Page 77 Gyrorake GA4121GM - T: Axle loads. • Tractor only. T = _____kg 12. - Appendix KN129DGB D...
- Page 78 Gyrorake GA4121GM Rear tool or front-rear combination: If the total unit weight exceeds the tractor Gross Combined Weight Rating in 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 79 Gyrorake GA4121GM - t: Axle loads. • Tractor + machine. • Hopper empty!. t = _____kg Calculating the rear tool weight (M2): M2 = t - T Calculating the distance (d): d = (( b x ( T1 - t1) ) / M2 ) - c 12.
- Page 80 Gyrorake GA4121GM Front tool: If the total unit weight exceeds the tractor Gross Combined Weight Rating in 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 81 Gyrorake GA4121GM - t: Axle loads. • Tractor + machine. t = _____kg Calculating the front tool weight M1 = t - T Calculating the distance (a): a = ( b x ( T2 - t2) ) / M1 12. - Appendix...
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Page 82: Limited Warranty
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 83 - 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 84 $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 88 KUHN S.A. - B.P. 50060 - F - 67706 SAVERNE CEDEX (FRANCE) KUHN-AUDUREAU S.A. - B.P. 19 - F - 85260 LA COPECHAGNIERE (FRANCE) KUHN-BLANCHARD SAS - 24, route de Nantes - F - 44680 CHEMERE (FRANCE) KUHN-HUARD S.A. - B.P. 49 - F - 44142 CHATEAUBRIANT CEDEX (FRANCE) KUHN-GELDROP B.V.
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