KUHN GMD16 Operator'S Manual Download Page 73

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10. - Maintenance and storage

GMD16-GMD20

KN225BGB_A

Disc mower

10.3 Maintenance

10.3.1 Belt tension

Adjusting the tension:

- Unscrew the 2 nuts (1).
- Tighten nut (2).
- Tighten the 2 nuts (1).

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.

Regularly check belt tension and in particular
during the first hours of use.

Never replace belts individually.

Replace belts in full sets.

Summary of Contents for GMD16

Page 1: ...Original instructions KN225BGB_A Read carefully before starting the machine Operator s manual Disc mower A1025 60B00001 A1025 60B99999 GMD16 GMD20 KN225BGB_A English 06 2019 KN225BGB_A ...

Page 2: ......

Page 3: ...IS MANUAL AVAILABLE FOR REFERENCE Pass it on to the next owner if you re sell the machine Your KUHN dealer can offer a complete line of genuine KUHN service parts These parts are manufactured and carefully inspected in the same factory that builds the machine to assure high quality and accurate fitting of any necessary replacements About improvements We are continually striving to improve our prod...

Page 4: ...4 2 4 Precautions to take before using the machine 15 4 2 5 Precautions when driving 15 4 2 6 Precautions when driving on public roads 15 4 2 7 Maximum speed 20 4 2 8 Precautions when coupling 21 4 2 9 Hydraulic circuit 21 4 2 10 PTO shaft 22 4 2 11 Waste disposal 23 4 2 12 Remote controlled components 24 4 2 13 Safety decals 24 4 2 14 Precautions for maintenance and repair work 25 4 2 15 Projecti...

Page 5: ... bar 38 5 4 Sound levels 39 6 Putting into service 40 6 1 Description of control elements 40 6 2 Coupling and uncoupling 41 6 2 1 Description of coupling elements 41 6 2 2 Preparing the tractor 41 6 2 3 Preparing the machine 43 6 2 4 Coupling the machine 45 6 2 5 Hydraulic connections 46 6 2 6 Electrical connection 46 6 2 7 Fit check chain 46 6 2 8 Primary PTO shaft 47 6 2 9 Adjusting the machine ...

Page 6: ...ion 63 9 9 Manual hydraulic cutter bar lift pump 63 9 9 1 Coupling and uncoupling 64 9 9 2 Putting the machine into transport position 64 9 9 3 Putting the machine into work position 65 9 10 Device for mowing at an angle of 40 65 9 11 Wear plate 65 10 Maintenance and storage 66 10 1 Frequency chart 66 10 2 Lubrication 67 10 2 1 PTO shafts 67 10 2 2 Oil change 69 10 3 Maintenance 73 10 3 1 Belt ten...

Page 7: ...orage 83 10 4 1 At the end of each season 83 10 4 2 At the start of each season 83 10 4 3 Storage 84 10 5 Dismantling and scrapping of the machine 84 11 Troubleshooting guide 85 12 Appendix 87 12 1 Calculating the load on an axle 87 13 Limited Warranty 94 ...

Page 8: ...GMD16 GMD20 8 3 Identification of the machine KN225BGB_A Disc mower 3 Identification of the machine 3 1 Front view 3 2 Rear view ...

Page 9: ...parts order or warranty claim 3 3 2 Description Model identification plate 1 Manufacturer name and address 3 Brand 4 KUHN logo 5 Description of the machine 7 Model 9a Machine serial number 9b Barcode Machine serial number 12 Weight empty Minimum Maximum 18 Data matrix 19 Plate reference 27 Place of manufacture 28 Manufactured by for 34 Special operation 9 Serial Nr 34 Ex 5 Machine 7 Model 09993000...

Page 10: ...er of the Eurasian customs union EAC marking 4 KUHN logo 7 Model 9 Machine serial number 19 Plate reference 23 Logo EAC 25 Manufacturing year 26 Model year 54 Data matrix Importer plate BRASIL For machines to be sent to Brazil 1 Manufacturer name and address 4 KUHN logo 7 Model 9 Machine serial number 19 Plate reference 24 Manufacturing year 54 Data matrix 24 Year of Construction 26 Model Year 7 M...

Page 11: ... to the equipment fitted on your machine Raised skid shoes High cone disc kit GMD20 Side deflector Side deflector with high cone disk Toolbox Lighting and signalling Lateral signalling equipment Lighting and signalling Only for USA Manual hydraulic cutter bar lift pump Device for mowing at an angle of 40 Wear plate ...

Page 12: ...ol 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 This symbol is used to communicate technical information of particular interest ...

Page 13: ...afety and public traffic circulation Designated use of the machine also means following operation maintenance and repair recommendations given by the manufacturer and using only genuine spare parts equipment and accessories as recommended by the manufacturer The manufacturer is not held liable for any damage resulting from machine applications other than those specified by the manufacturer Any use...

Page 14: ...t is too late to learn once work has been started 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 Before leaving the tractor or before adjusting maintaining or repairing the machine disengage the ...

Page 15: ...rd 4 2 5 Precautions when driving Tractor handling stability performance and braking efficiency are all affected by weight distribution trailed or mounted implements additional ballast and driving conditions It is therefore of great importance that the operator exercises caution in every given situation Groundspeed must be adapted to ground conditions as well as to roads and paths Always avoid abr...

Page 16: ...ansporting the machine on public roads place the machine into its transport position according to the instructions in this manual Lights and indicators Before transporting the machine on public roads ensure that all legally required lightings and signallings are in place Ensure that lightings and signallings are clean and in good working order Replace any missing or broken equipment Always obey cu...

Page 17: ... of the tractor unladen weight For machines with hoppers or tanks 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 Description Units Description T kg Tractor unladen weight PTAC kg Gross Combined Weight Rat...

Page 18: ...hine transport position To do If the front axle load t1 is below 20 of the tractor tare T add ballast weights M1 to exceed the minimum load on the front axle Example T 7500 kg 16535 lb 20 of T 1500 kg 3300 lb t1 700 kg 1545 lb 700 kg 1545 lb 1500 kg 3300 lb Add ballast weights until the minimum front axle load is exceeded Repeat checking procedure t1 _____kg t1 ________ kg t1 20 T t1 20 T t1 t1 20...

Page 19: ...g 22046 lb PTAC 13000 kg 28660 lb t PTAC Go to the next stage kg kg t _____kg To measure Load on rear axle t2 Tractor machine transport position Ballast weights Checking Check in the tractor s operator s manual that the value measured is below the maximum allowed tractor rear axle load Check that tyre and rim specifiations are in conformity with the requirements of the tractor manufacturer Example...

Page 20: ...GMD16 GMD20 20 4 Safety KN225BGB_A Disc mower 4 2 7 Maximum speed Always keep to the legal speed limit for driving a tractor machine assembly on public roads ...

Page 21: ...depressurize the hydraulic circuit To avoid making incorrect connections mark hydraulic couplers and corresponding hoses with colors WARNING Functions could be reversed for example lift lower and cause accidents Regularly make visual inspection to check if hydraulic hoses are damaged or worn In case of normal wear the hydraulic hoses must be replaced every 5 years Damaged or worn hoses must immedi...

Page 22: ...ven a lethal accident Do not wear loose clothing that could be caught in the rotating PTO shaft Before attaching or removing a PTO shaft or before doing any work on the machine disengage the PTO drive turn off the engine remove ignition key and wait for all moving parts to come to a complete stop If the primary PTO shaft is equipped with a torque limiter or a free wheel these must be fitted on the...

Page 23: ...85 mm 3 35 4 45 mm 1 772 20 100 mm 4 00 5 44 mm 1 732 6 100 mm 4 00 When uncoupling the machine rest the PTO shaft on the support specially provided and replace protective shield on the PTO stub of the tractor Read and follow the instructions in the operator s manual provided with the PTO shaft 4 2 11 Waste disposal Respect the environment Never spill pollutants oil grease filters etc on the groun...

Page 24: ...lic or pneumatic controls Keep away from these danger zones 4 2 13 Safety decals Safety warning decals are placed in pictorial form on various parts of the machine They are there to warn you of potential dangers and to tell you how to avoid accidents Always keep the safety decals clean and readable and replace them when they are worn damaged missing or illegible ...

Page 25: ...on the electric circuit or before any electric welding is carried out on the attached machine disconnect the machine from the tractor electrical circuit Also disconnect alternator and battery terminals Repairs on elements under pressure or tension springs pressure accumulators etc must only be carried out by competent persons with regulation equipment Wear the appropriate protective clothing for t...

Page 26: ...e 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 Keep all persons and animals away from the danger zone The protection covers help reducing risks of projections Therefore make sure that all mower protection devices are in place and good conditio...

Page 27: ...everse After disengaging the PTO drive cuttings tools can continue rotating for some time Stay away from the machine until all moving parts have come to a complete standstill 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 Check the entire machine for any damage before resuming wo...

Page 28: ...GMD16 GMD20 28 4 Safety KN225BGB_A Disc mower 4 3 Location and description of safety decals on the machine 4 3 1 Location of safety decals 2 4 3 5 1 K9A151CE 0 8 6 7 ...

Page 29: ... on the machine 2 Before leaving the tractor or 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 Projections 3 Stones and other debris projected by the moving parts can travel a long distance The protection covers must always be in position and in g...

Page 30: ...t 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 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 Manoeuvring area 7 Do not step on the machine Risk of falling or d...

Page 31: ...e 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 Whatever this speed we recommend for everyone s safety not to exceed a speed of 40 km h 25 mph The rear device is made up of the following component 1 red reflector 1 K9A151CE 0 1 ...

Page 32: ...SA To conform with the current road regulations the machine must be fitted with specific signalling panels when driving on public roads 4 5 Likely critical failures 133993 Specific requirements for countries member of the Eurasian Economic Community EAC marking 133994 Specific requirements for countries member of the Eurasian Economic Community EAC marking 133995 Specific requirements for countrie...

Page 33: ...asian Economic Community EAC marking 139867 Specific requirements for countries member of the Eurasian Economic Community EAC marking 134002 Specific requirements for countries member of the Eurasian Economic Community EAC marking 134003 Specific requirements for countries member of the Eurasian Economic Community EAC marking 4 7 Limit state criteria 134006 Specific requirements for countries memb...

Page 34: ...cifications 5 1 Description and glossary 0 1 Cutterbar 2 Front guard 3 Check chain 4 Hitch pin 5 Lift cylinder 6 Compensating spring 7 Upper coupling yoke 8 Safety breakback 9 Parking stand 10 Disk 11 Guard lock 12 Unlocking handle 13 Swath wheel 1 2 3 5 6 7 8 9 10 11 4 13 12 ...

Page 35: ...r 5 1 1 Designated use of the machine The GMD16 20 mowers must only be used for the purpose for which they were manufactured mowing on the ground of arable meadows seeded grassland and permanent meadows for the purpose of harvesting fodder for feeding livestock ...

Page 36: ... 5 3 2 00 m 6 7 Swath width 1 10 m 3 7 1 40 m 4 7 Width in transport position 1 69 m 5 7 Disc rotational speed 2986 min PTO speed 540 min Minimum PTO power requirement 21 kW 28 hp 25 kW 35 hp Weight from 380 kg 838 lb to 386 kg 851 lb from 427 kg 941 lb to 434 kg 957 lb 5 2 1 Designated parameters 134013 Specific requirements for countries member of the Eurasian Economic Community EAC marking ...

Page 37: ... is available as option for tractors equipped with a 1 3 8 6 spline pto stub or 1 3 8 6 spline pto shaft With free wheel clutch This pto shaft with free wheel avoids shocks generated by the inertia of the rotating components during deceleration or stopping of the tractor engine or 32 x 38 8 spline pto shaft A specific pto shaft is available as option for tractors equipped with a 32 x 38 8 spline p...

Page 38: ...D16 GMD20 38 5 Machine specifications KN225BGB_A Disc mower 5 3 2 Put into the working or transport position Mechanical safety release 5 3 3 Cutter bar Knife attachment per bolt and nut Standard HD discs ...

Page 39: ...have been measured in accordance with the measuring methods as defined in NF EN ISO 4254 1 Agricultural machinery Safety Part 1 General requirements Weighted equivalent continuous acoustic pressure level at the driver s seat closed cabin L A eq Tractor only 69 8 dB A Tractor machine 72 1 dB A ...

Page 40: ... Disc mower 6 Putting into service 6 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 1 ...

Page 41: ... PTO shaft 1 3 8 6 splines 1 A release cord 2 A check chain 3 6 2 2 Preparing the tractor Select the tractor speed of 540 min 3 1 2 Check that the tractor s authorized gross weight as well as its lift capacity and maximum weight per axle are not exceeded See section Safety Safety instructions Precautions when driving on public roads Appendix The tractor must be fitted with lower link stabilizers M...

Page 42: ... side Hitch pin parallelism Adjust tractor lift rods so that hitch pins are parallel to the ground Lateral adjustment of the lower links Distribute the play on each side of the lift linkage Check that the stabilisers function properly Adjustment Locking Unlocking Position the machine on level hard ground A A L ...

Page 43: ...For attachment category 1 If measure A is below 2 10 m 6 11 Adjust machine lower hitch pin position Loosen the 2 counter nuts 1 Unscrew the 2 bolts 2 Place hitch pins 3 and 4 in the required position X 683 mm 2 3 Tighten the 2 bolts 2 Tighten the 2 counter nuts 1 Place lower links in position a When optional equipment is used follow specific procedures mentioned in the related section Optional equ...

Page 44: ...w or equals 2 10 m 6 11 Adjust machine lower hitch pin position Loosen the 2 counter nuts 1 Unscrew the 2 bolts 2 Place hitch pins 3 and 4 in the required position X 825 mm 2 8 Tighten the 2 bolts 2 Tighten the 2 counter nuts 1 Place lower links in position a If measure A is comprised between 2 10 m 6 11 and 2 25 m 7 04 Adjust machine lower hitch pin position Loosen the 2 counter nuts 1 Unscrew th...

Page 45: ...ighten the 2 counter nuts 1 Place lower links in position c 6 2 4 Coupling the machine Lower the tractor three point linkage Position ball joints of tractor lower links in line with machine lower yokes Attach the lower links to the hitch pins Check that lynch pins are in place and locked Attach top link 1 in one of the upper holes on the tractor side Insert and lock top link lynch pin Place releas...

Page 46: ...lve with float position 6 2 6 Electrical connection 6 2 7 Fit check chain a b 2 1 When optional equipment is used follow specific procedures mentioned in the related section Optional equipment Manual hydraulic cutter bar lift pump 1 2 When optional equipment is used follow specific procedures mentioned in the related section Optional equipment Lighting and signalling See section Putting into servi...

Page 47: ...ended to the maximum the tube overlap must not be below 250 mm 10 If this is not the case Mark length H to cut when the transmission is the maximum overlap position Shorten the guard tubes and the transmission tubes by the same length Bevel and clean the tubes Grease the inside of the outer tube Never operate the PTO shaft at an angle X exceeding 30 Before using the machine for the first time Grea...

Page 48: ...draulic position control function Lower tractor lift linkage to obtain a distance H slightly exceeding 400 mm 1 4 between the hitch pins and the ground Note the corresponding lever position in the tractor cab Immediately replace any worn or damaged guard 1 The distance between the Hitch pins and the ground must be of 400 mm 1 4 It is not necessary to use the check chain supplied with the machine ...

Page 49: ...f the upper holes of the tractor top link yoke Lower the machine until the check chain is under tension The tractor lift linkage is in working position The frame height is correct when The cutterbar is resting on the ground The check chain is under tension Close hook eyelet with roll pin when properly adjusted The distance between the Hitch pins and the ground must be of 400 mm 1 4 ...

Page 50: ...e cord from tractor and store it in its holder on the machine Detach the top link from the machine end Release the lower links The machine is uncoupled For tractors not fitted with a hydraulic position control function unhook and attach check chain to its support Always park the machine with the cutter bar in horizontal position When optional equipment is used follow specific procedures mentioned ...

Page 51: ...he mowing unit in transport position The machine automatically locks in transport position The machine is in transport position 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 When optional equipment is used follow specific proc...

Page 52: ...re that the machine complies with current highway code regulations Replace worn or damaged reflectors Make sure the release cord cannot be operated inadvertently Check that the transport lock is fully engaged 7 3 Machine transport using transport means 134035 Specific requirements for countries member of the Eurasian Economic Community EAC marking 134036 Specific requirements for countries member ...

Page 53: ...ansport lock Pull the release cord until transport lock is released 1 Place the single acting valve of the mowing unit lift cylinder in floating position to lower the mowing unit 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 When optional equipment is used follow specific procedures mentioned...

Page 54: ...guard Lower and lock front guard Shift the mowing unit lift cylinder directional control valve in float position Lower the tractor lift linkage in working position The machine is in working position During work only use the tractor lift linkage to place the machine in headland turn position 1 ...

Page 55: ...e top link Modify the top link length to alter the machine tilt angle Check cutting height Before leaving the tractor or 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 The maximum cutting height L1 50 mm 1 9 is obtained when the disks are parallel...

Page 56: ...icult working conditions the compensating spring adjustment can be modified Lift mowing unit to release tension on the spring The mowing unit ground pressure system is determined by the spring loop position 1 Position a Maximum ground pressure reduction Position b Minimum ground pressure reduction Check that there is still a play J equalling minimum 15 mm 0 59 between the shell the cone rib and th...

Page 57: ... speed 8 3 2 Headland turn maneuvers Before mowing and to reduce risks of projections lower the front guard Keep all persons and animals away from the machine danger zone Never lean or step on the protection cover At work the tractor hydraulic valve must always be in floating position to ensure good ground contour adaptation Adapt the forward speed to the working conditions Manoeuvre cutter bar us...

Page 58: ...ot to the rear when hitting an obstacle The safety breakback is reset by reversing a 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 In case an obstacle has been struck check that the mowing unit has not been damaged a ...

Page 59: ...k front guard Remove foreign body Check that the mowing unit has not been damaged Check rotating components for damage Lower and lock front guard Respect spring washer layout For proper functioning of the safety measure L must not be below 91 mm 3 60 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...

Page 60: ...D20 The raised skids shoes allow mowing higher between 35 and 90 mm 1 4 3 5 Replace the end disc skids by the 2 raised skid shoes The use of raised skid shoes is also recommended on sticky grounds 9 2 High cone disc kit GMD20 GMD20 The high cone disks allow reducing the swath width by approximately 1 10 m 3 7 ...

Page 61: ...tes of the cutterbar stiffener 9 4 Side deflector with high cone disk GMD16 GMD20 Large cone discs allow mowing dense or down crops with long stems The side deflector prevents crop from wrapping around the outer large cone disk when mowing in dense or down crops with long stems 9 5 Toolbox GMD16 GMD20 This equipment allows storing the tools knives bolts and nuts necessary for the machine maintenan...

Page 62: ... road regulations 9 6 1 Electrical connection Connect machine 7 pin plug on the tractor 7 pin socket After making the connections check that there is no risk of the hoses being caught during operation 9 7 Lateral signalling equipment GMD16 GMD20 The machine can be fitted with specific signalling lights to comply with the road regulations in combination with signalling panel ...

Page 63: ...ith the road regulations 9 8 1 Electrical connection Connect machine 7 pin plug on the tractor 7 pin socket After making the connections check that there is no risk of the hoses being caught during operation 9 9 Manual hydraulic cutter bar lift pump GMD16 GMD20 This equipment enables folding the machine when the tractor is not fitted with an outer hydraulic connection ...

Page 64: ... No hydraulic start up to be done before using the machine Uncoupling the machine No hydraulic start up to be done before using the machine 9 9 2 Putting the machine into transport position Fully turn thumbwheel 1 clockwise Position lever 2 in position a Activate hydraulic pump control lever to place the mowing unit in transport position The machine automatically locks in transport position Place ...

Page 65: ... transport lock Pull the release cord until transport lock is released 2 Fully rotate knob 3 counterclockwise 9 10 Device for mowing at an angle of 40 GMD16 GMD20 This equipment enables obtaining a maximum cutter bar angle of 40 9 11 Wear plate GMD16 GMD20 Wear plates can be welded underneath the disc guard to improve its resistance to wear in difficult working conditions a 1 2 3 ...

Page 66: ...actor engine remove ignition key wait until all moving parts have come to a standstill and apply park brake Maintenance intervals are indicated for normal conditions of use After the first 10 hours of use Every 50 hours Every 200 hours or at the end of the season Lubrication Oil change The cutterbar The side angle gearbox Oil The moving parts and pivot points Grease Lubricate cylinder slide ...

Page 67: ...before greasing Lubricate with multi purpose grease grade NLGI 2 10 2 1 PTO shafts Primary PTO shaft Place the machine in working position Stop the tractor engine and remove ignition key Before using the machine for the first time Grease the transmission Configuration Standard Every 50 hours 1 Cross bars 2 Guide rings 3 Transmission tube 1 1 2 2 3 ...

Page 68: ...GMD16 GMD20 68 10 Maintenance and storage KN225BGB_A Disc mower Configuration Free wheel Every 50 hours 1 Cross bars 2 Guide rings 3 Guide rings 4 Free wheel 1 1 2 2 4 3 ...

Page 69: ... minutes so that the oil warms up GMD16 GMD20 Oil volume 1 40 L 0 37 US gal 1 70 L 0 45 US gal Type of oil Mineral oil Gear oil Viscosity SAE 80W90 Specification API GL5 extreme pressure When changing the oil it is recommended to use either an identical mineral oil or a synthetic oil of type PAO Poly Alpha Olefine with viscosity grade SAE 75W90 ...

Page 70: ...ely Wait for dripping to stop Clean and reinstall drain plug 2 and its washer Replace if necessary Pour the correct oil quantity and quality through the opening of the filler plug Checking cutterbar oil level The oil must reach the lower edge of the filling hole 1 Clean and reinstall filler plug 1 and its washer Replace if necessary Never use an oil of viscosity SAE 90 in the cutterbar For safety ...

Page 71: ...a few minutes so that the oil warms up GMD16 GMD20 Oil volume 0 25 L 0 07 US gal Type of oil Mineral oil Gear oil Viscosity SAE 80W90 Specification API GL5 extreme pressure When changing the oil it is recommended to use either an identical mineral oil or a synthetic oil of type PAO Poly Alpha Olefine with viscosity grade SAE 75W90 ...

Page 72: ...oil to drain completely Wait for dripping to stop Place the cutterbar in horizontal position Pour the correct oil quantity and quality through the opening of the filler plug 1 Checking oil level of the lateral bevel gearbox Place the cutterbar in horizontal position The oil level must reach the lower edge of the emptying hole Clean and reinstall drain plug 2 and its washer Clean and reinstall fill...

Page 73: ...ut 2 Tighten the 2 nuts 1 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 Regularly check belt tension and in particular during the first hours of use Never replace belts individually Replace belts in full sets 1 1 2 ...

Page 74: ...on Exert a force of 3 5 daN on the belt The deflection H must not exceed 10 mm 0 39 10 3 2 Breather plug checking and cleaning From the working position Remove breather plug 1 and its seal Clean and check breather plug for good functioning 1 Reinstall breather plug 1 and its seal H 1 ...

Page 75: ...d reinstall filler plug 1 and its washer Replace if necessary Before checking that the discs rotate freely by hand If it is found that the transmission case is very hot to touch by hand there is no cause of alarm provided Lubrication recommendations have been respected Discs can be rotated freely by hand when the machine is hot Before carrying out any maintenance or repairs on the machine switch o...

Page 76: ... cutterbar in horizontal position Remove drain plug 1 and its washer Check the oil level The oil level must reach the lower edge of the emptying hole Top up if necessary Fill via the filler stopper 2 Clean and reinstall drain plug 1 and its washer Replace if necessary Clean and reinstall filler plug 2 and its washer Replace if necessary 1 2 ...

Page 77: ...he following cases Damaged knives Very rough conditions can cause knives to crack and become deformed Worn knives The length C of a knife must exceed 65 mm 2 6 The width B of a knife measured at A 10 mm 0 4 of the disk must exceed 34 mm 1 34 Elongation of hole due to wear Check that there is still a minimum value L equalling 9 mm 0 35 Always replace both knives per disc to avoid creating an out of...

Page 78: ...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 distortion When the locking compound is worn or inoperational When the bolt head wear reaches the center line of the bolt When diameter D of the bolt s body is below 15 mm 0 59 D ...

Page 79: ...oosen nut using box spanner supplied with the machine Remove bolt through opening located at the front of the disc guard Check the condition of the securing elements regularly and also the torque of the knife fixing bolt Torque 12 daNm 89 lbf ft a 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...

Page 80: ...em Tighten the securing nut of the knives to 12 daN m 89 lbf ft Dull knives require more horse power and have a negative effect on the cut quality Knife attachment per bolt and nut Knife for disk rotating to the left Standard Part no K6801410 Knife for disk rotating to the right Standard Part no K6801420 Knife for disk rotating to the left HD discs Part no 56451200 Knife for disk rotating to the r...

Page 81: ...ers using the box spanner supplied with the machine Remove the disc conical cover Remove the 2 other nipple screws and their spring washers Remove the disc When remounting Position their largest diameters at right angles to each other a Position conical centre of spring washer at the top b Tighten screws Torque 12 daNm 89 lbf ft The replacement of the inner disk must be carried out by your Kuhn au...

Page 82: ...f outer and inner cone covers 2 and 3 Torque 6 daNm 44 lbf ft Replace any lost or damaged cover Check if there is still a minimum gap X 1 mm 0 04 between the disk lower part and the cutter bar wear plates c If this is not the case fit one maximum two spacer s between the disc and the mounting hub d Part no 56807100 X c d 1 2 3 1 ...

Page 83: ...with the cutter bar in horizontal position in a sheltered dry place Inspect and replace worn knives and bolts Release belt tension 10 4 2 At the start of each season Re read the operators manual Inspect and replace worn knives and bolts Check that all nuts and bolts are sufficiently tightened Check belt condition Replace them if necessary Check belt tension Retension if necessary Wipe off grease o...

Page 84: ... the Eurasian Economic Community EAC marking 10 5 Dismantling and scrapping of the machine At the end of the machine s life the various machine components must be disposed of or recycled in compliance with local regulations in force Make sure the machine is stable parking stands holders slings etc prior to carrying out any repair or maintenance Before any repair or maintenance on a circuit includi...

Page 85: ...o high Reduce angle Soil build up in front of the cutterbar Too much cutterbar down pressure Adjust compensating spring tension Very wet working conditions Adjust main frame height with regards to the ground Fit raised skid shoes Bad ground contour adaptation Incorrect main frame setting Adjust main frame height with regards to the ground Excessive ground speed Reduce groundspeed Hydraulic cylinde...

Page 86: ...bble too long Incorrect cutter bar pitch angle Modify pitch angle using top link Machine too light Adjust compensating spring tension Check frame position Too frequent safety breakback release Insufficient spring washer compression Increase spring washer compression ...

Page 87: ...weight T1 kg Unladen load on tractor front axle T2 kg Empty load on tractor rear axle t kg Axle loads Tractor machine t1 kg Load on front axle Tractor machine t2 kg Load on rear axle Tractor machine M1 kg Total weight of front tool or front ballast M2 kg Total weight of rear tool or rear ballast a m Distance between the tools centre of gravity or the front ballast and the front axle centre b m Dis...

Page 88: ...til the required minimum front load is reached Indicate front axle calculated load value and the one indicated in the tractor operators manual T1 real M1 x a b T1 x b M2 x c d b 4 Calculation of the total weight M real If the rear tool M2 is lighter than the minimum load required at the rear minimum increase tool weight until the required minimum rear load is reached Indicate calculated total load...

Page 89: ...r s manual Double value of the authorized capacity per tyre 2 tyres Minimum front rear ballasting kg Total weight kg kg Load on front axle kg kg kg Load on rear axle kg kg kg The minimum ballasting must be made by fitting a tool or an additional mass to the tractor The values obtained must be below or equal the authorized values ...

Page 90: ...achine 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 T2 T1 Load on front axle Tractor only T1 _____kg T1 ________ kg ...

Page 91: ...12 Appendix GMD16 GMD20 91 KN225BGB_A Disc mower T2 Load on rear axle Tractor only T2 _____kg T2 ________ kg T Axle loads Tractor only T _____kg T ________ kg ...

Page 92: ... 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 Measure dimension b Measure dimension c b c d t1 t2 M2 t1 Load on front axle Tractor machine Hopper empty t1 _____kg t1 ________ kg ...

Page 93: ...12 Appendix GMD16 GMD20 93 KN225BGB_A Disc mower Calculating the rear tool weight M2 M2 T t Calculating the distance d d b x T1 t1 M2 c t Axle loads Tractor machine Hopper empty t _____kg t ________ kg ...

Page 94: ...manufacturer concerned in as much as the latter justifies such a claim This Limited Warranty does not apply to failure through normal wear and tear to damage resulting from negligence or from lack of inspection from misuse from lack of maintenance and or if the machine has been involved in an accident lent out or used for purposes other than those for which it was intended by the Company This Limi...

Page 95: ...nd quantity of lubricants used must always be in accordance with Company specifications The safety measures mentioned in the Operator s manual and on the machine itself have been followed and all the guards and protective elements of whatever nature have been inspected regularly and maintained in perfect working order The judgment of the Company in all case of claims under this Limited Warranty sh...

Page 96: ...nforms to the requirements of following European harmonized standards conforms to the requirements of the European directive 2006 42 CE Brand Brand Machine Machine Type Model Type Model Serial no Serial no declares that the product described hereafter Manufacturer name and address The manufacturer Name and address of the person authorised to compile the technical file 2 y r o t a n g i S 1 y r o t...

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Page 100: ...CHARD SAS 24 route de Nantes F 44680 CHEMERE FRANCE KUHN HUARD SAS B P 49 F 44142 CHATEAUBRIANT CEDEX FRANCE KUHN GELDROP B V P O Box 9 5660 AA GELDROP THE NETHERLANDS KUHN NORTH AMERICA INC P O Box 167 Brodhead WI 53520 USA KUHN KRAUSE INC PO Box 2707 Hutchinson KS 67504 USA KUHN DO BRASIL S A PASSO FUNDO RS 99050 130 BRASIL KUHN MONTANA SÃO JOSÉ DOS PINHAIS PR 83025 410 BRASIL ...

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