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3. ADJUSTMENTS AND DRIVING 

ROLLER CONDITIONER (SC MODELS) 

The machine with roller conditioner with rubber profiles of the chevron type is from 
the factory fitted with a special sprocket wheel in the transmission which provides 
1000 rpm on the rollers. This speed is standard on the machines with rollers. 

CONDITIONING 

Conditioning should be hard enough to obtain sufficiently fast drying, but not harder 
than that. The right degree of conditioning may be difficult to estimate, especially in 
pure grass crops.  
The stems should be bruised but not broken. Broken leafs and stems will result in 
unnecessary waste. 
 
Too hard conditioning results in stems having a dark green colour and giving off 
liquid. 
 
The reason may be:  

That the rollers are too close 

that the roller pressure is too high and 

that the driving speed is too low. 

 

Fig. 3-18  Too gentle conditioning is characterised by the stems standing upright when a 

bunch is held in the hand. 
 
The reason may be:  

that the roller distance is too long 

that the roller pressure is too low and 

that the driving speed is too high. 

 
It may be difficult to make out whether the conditioning is optimal, but do not get 
tempted to exaggerate the conditioning. It is usually sufficient, even if it cannot 
immediately be seen on the grass. 

ROLLER PRESSURE 

Fig. 3-19  In order to obtain a suitable roller pressure in large as well as small amounts of 
Fig. 3-20  grass, the upper roller is spring-loaded and the springs also make it possible for the 

rollers to give way if foreign matter gets between the rollers. 

 

 
 
The roller pressure is adjusted on both sides of the machine at the springs A
 
The following can be used as a guide:  
 

In pure grass crops the springs are tightened.  

 

In clover, alfalfa and similar leafy crops the springs are loosened.  

 
IMPORTANT:  The springs must be adjusted equally in both sides.  

To make sure there is enough travel, the spring should 
maximum be tightened 24 mm. 
 
This means that the length of the spring should be minimum 226 
mm. 

PIGB-093X-06 GX 2402/2802/3202 SM-GX 2402/2802 SC  0410 

31 

 

 

 

Summary of Contents for GX 2402 SC

Page 1: ...Disc Mower GX 2402 SM SC I GX 2802 SM SC I GX 3202 SM Instruction Manual Original instructions Edition 6 I April 2010 ...

Page 2: ...Type GX 2402 SM FR Modèle GX 2802 SC ES modelo GX 2802 SM PT Marca GX 3202 SM DA Typ PL Model FI Merkki EN ES DE PT IT DA NL PL FR FI to which this declaration relates corresponds to the relevant basic safety and health requirements of the Directive 2006 42 EC al cual se refiere la presente declaración corresponde a las exigencias básicas de la normativa de la y referentes a la seguridad y a la sa...

Page 3: ...ction manual very carefully before using the machine Pay special attention to the safety instructions This instruction manual is made so that the information is mentioned in the order you will need it i e from the necessary operation conditions to use and maintenance Besides this there are illustrations with text Right and Left are defined from a position behind the machine facing the direction of...

Page 4: ... 3 ADJUSTMENTS AND DRIVING 21 CONNECTION 21 SWITCHING BETWEEN WORKING AND TRANSPORT POSITION 21 PARKING 23 WORKING IN THE FIELD 23 Basic adjustments 23 Stubble height 23 Starting 23 Turning 25 The break away mechanism 25 Securing against overload 25 Flow caps 27 Swath guards 27 Equipment for wide spreading TOP DRY on SM models 27 FINGER CONDITIONER SM MODELS 29 Conditioner speed 29 Conditioner pla...

Page 5: ...IN GENERAL 43 FRICTION CLUTCH 45 CONTROL OF BALANCE 45 CUTTER BAR DISCS AND BLADES 47 Blades 47 Replacement of blades 49 Cutter bar and discs 49 CONDITIONER 51 Tightening of roller chain 51 WINTER STORAGE 51 6 MISCELLANEOUS 52 DRIVING TIPS AND FAULT FINDING 52 OPTIONAL EQUIPMENT 53 High guide shoes 53 Sharp shearbars 53 SPARE PARTS ORDER 53 MACHINE DISPOSAL 53 PIGB 093X 06 GX 2402 2802 3202 SM GX ...

Page 6: ... risk If changes are made on the machine and its construction without permission from JF Fabriken A S JF Fabriken A S cannot be held responsible for any damage resulting from this Intended use of course implies that you observe the prescriptions in the instruction manual and the spare parts book use original spare parts and contact an authorised workshop in so far as it is necessary The following ...

Page 7: ...to others before you have made sure that they have the necessary knowledge to operate the machine safely DEFINITIONS The safety decals and the instruction manual of the machine contain a line of safety notes The safety notes mention certain measures which we recommend you and your colleagues to follow as to increase the personal safety as much as possible We recommend that you take the necessary t...

Page 8: ... 9 When connecting the PTO drive shaft check for 540 1000 rpm 10 Never start the tractor until all persons are safely away from the machine 11 Do not stand near the machine while it is working 12 Stop the machine if children are near 13 Never use the machine for other purposes than what it has been constructed for 14 Do not stand near or try to lift a guard until all revolving parts have stopped m...

Page 9: ...istake It is highly dangerous to connect a machine intended for 540 rpm to a PTO delivering 1000 rpm Long term overload may damage the machine and at worst result in ejection of parts Choose a tractor with a suitable own weight and track width so that it can drive steadily on the ground Also make sure that the link arms and towing hook of the tractor are intended to carry machines with the own wei...

Page 10: ...ments To ensure all the air has been expelled from the oil in the hydraulic cylinders test all the functions after the hydraulic connections are connected to the tractor Especially before driving on public road TRANSPORT Never drive faster than the conditions allow and maximum 30 km h It is important to block hydraulic transport adjustments An unintentional operation of the cylinders may cause the...

Page 11: ...tightened to the correct torque When replacing parts in the hydraulic system always make sure that the cutting unit rests on the ground or the lifting cylinders are blocked Hydraulic hoses must be checked by an expert before use and after that minimum once a year If necessary they must be replaced The working life of hydraulic hoses should not exceed 6 years including maximum 2 years of storage Wh...

Page 12: ...1 INTRODUCTION PIGB 093X 06 GX 2402 2802 3202 SM GX 2402 2802 SC 0410 12 2 1 2 3 4 5 6 7 8 9 10 11 12 12 1 3 4 5 6 STOP 2 MIN 7 8 9 10 11 12 Min 10 m ...

Page 13: ...n 6 Children Never let children stand near the machine during operation Especially not small children as they have a tendency to do unforeseen things 7 Momentum After the PTO drive shaft has stopped the blades will have a momentum where they keep rotating for up to 2 minutes Wait until the blades have come to a complete stop before you remove the canvas and the guards for inspection and maintenanc...

Page 14: ...ariable stubble height mm 45 90 45 90 Swath width interval m 1 0 2 2 1 2 2 6 Transport width m 3 3 Type Rubber rollers Chevron Rubber rollers Chevron Conditioner Speeds rpm 1000 1000 Stone release mechanical Standard Standard Freewheel clutch Standard Standard Friction clutch Option Option Setting on friction clutch Nm 1450 1450 Window closed 76 5 dB A Machine connected Window open 82 5 dB A Windo...

Page 15: ...0 45 90 45 90 Swath width interval m 1 0 2 4 1 2 2 8 1 4 3 2 Transport width m 3 3 3 Type PE fingers PE fingers PE fingers Condition er Speeds rpm 700 860 Standard 700 860 Standard 700 860 Standard Wide spreading Top Dry Standard Standard Standard Stone release mechanical Standard Standard Standard Freewheel clutch Standard Standard Standard Friction clutch Option Option Standard Setting on fricti...

Page 16: ... CONNECTION AND TEST DRIVING PIGB 093X 06 GX 2402 2802 3202 SM GX 2402 2802 SC 0410 16 P R 1 1 0 3 3 3 a A D D B C Fig 2 1 Fig 2 2 PR12 0257a F I Fig 2 3 Fig 2 4 PR14 0053 B A B PR12 1192 Fig 2 5 Fig 2 6 ...

Page 17: ... when lifting the machine with the link arms and optimal conditions for later connection and disconnection of the machine Fig 2 4 Connect the hydraulic hoses to a double acting hydraulic outlet Place the machine in working position by first raising the link arms then activate the double acting outlet and at the same time actuate the valve by pulling the cord Fig 2 5 Release the transport lock B Fi...

Page 18: ...2 CONNECTION AND TEST DRIVING PIGB 093X 06 GX 2402 2802 3202 SM GX 2402 2802 SC 0410 18 PR12 1169 B PR11 5017 Fig 2 7 Fig 2 8 PR12 1168 C B A D 100 Fig 2 9 Fig 2 10 ...

Page 19: ...ust be dismounted After this the tubes are greased by disassembling the 2 half parts IMPORTANT For the warranty of the PTO shaft to be valid and to retain the durability the following rules must be observed Always start the machine with the engine running at low speed Always start the machine with the PTO shaft in a position of maximum 10o from horizontal A sudden increase in the number of rpm of ...

Page 20: ...3 ADJUSTMENTS AND DRIVING PIGB 093X 06 GX 2402 2802 3202 SM GX 2402 2802 SC 0410 20 PR14 0054 A Fig 3 1 Fig 3 2 PR14 0053 B Fig 3 3 Fig 3 4 Fig 3 5 Fig 3 6 ...

Page 21: ...c outlet SWITCHING BETWEEN WORKING AND TRANSPORT POSITION Fig 3 4 The transport lock B is released for working position and locked for transport position WARNING Conversion to transport position should not take place with revolving PTO shafts The PTO shafts cannot rotate in transport position Fig 3 4 The pendulum suspension must be locked with the transport lock B during transport to avoid traffic...

Page 22: ...3 ADJUSTMENTS AND DRIVING PIGB 093X 06 GX 2402 2802 3202 SM GX 2402 2802 SC 0410 22 PR12 1192 A B PR14 0053 B Fig 3 7 Fig 3 8 Fig 3 9 ...

Page 23: ...ine is constructed to cut with a theoretical cutting height from 22 mm to 45 mm This means that the real stubble height will be from approximately 45 mm to 90 mm Usually the stubble height is 2 x theoretical cutting height Fig 3 9 Rough adjustment of the stubble height is made in 2 steps with the pin D at guide shoe E in the right and left hand side the bottom hole gives a low stubble Fine adjustm...

Page 24: ...3 ADJUSTMENTS AND DRIVING PIGB 093X 06 GX 2402 2802 3202 SM GX 2402 2802 SC 0410 24 PR12 0018 Fig 3 10 Fig 3 11 ...

Page 25: ...er tighten the spring so much that it blocks the mechanism due to insufficient spring travel SECURING AGAINST OVERLOAD IMPORTANT The tractor driver can secure the transmission against overload When using the machine the following should be considered 1 Always start the machine with the engine running at low speed This especially applies to tractors with electro hydraulic connection of the PTO shaf...

Page 26: ...3 ADJUSTMENTS AND DRIVING PIGB 093X 06 GX 2402 2802 3202 SM GX 2402 2802 SC 0410 26 Fig 3 12 Fig 3 13 Fig 3 14 ...

Page 27: ...cking up for a forage harvester or a baler Fig 3 13 The width of the swath can be adjusted by turning the swath guards The bolts handles on the top plate are loosened and the guards are moved either out or in EQUIPMENT FOR WIDE SPREADING TOP DRY ON SM MODELS The GX machines with finger conditioner SM models are fitted with a number of spreading plates which make it possible to place a full width s...

Page 28: ...3 ADJUSTMENTS AND DRIVING PIGB 093X 06 GX 2402 2802 3202 SM GX 2402 2802 SC 0410 28 Fig 3 15 Fig 3 16 PR12 0646 E D Fig 3 17 ...

Page 29: ... fingers C on the rotor The shorter the distance the stronger the conditioning of the crop Fig 3 17 The system is operated with the handle D which can be placed in 3 positions on the bracket E The distance of the conditioner plate to the rotor is changed by moving the handle D to one of the other holes in the bracket E If the handle is placed in pos A the distance between the conditioner plate and...

Page 30: ...3 ADJUSTMENTS AND DRIVING PIGB 093X 06 GX 2402 2802 3202 SM GX 2402 2802 SC 0410 30 PR12 0991 A Fig 3 18 Fig 3 19 Fig 3 20 ...

Page 31: ...is held in the hand The reason may be that the roller distance is too long that the roller pressure is too low and that the driving speed is too high It may be difficult to make out whether the conditioning is optimal but do not get tempted to exaggerate the conditioning It is usually sufficient even if it cannot immediately be seen on the grass ROLLER PRESSURE Fig 3 19 In order to obtain a suitab...

Page 32: ...3 ADJUSTMENTS AND DRIVING PIGB 093X 06 GX 2402 2802 3202 SM GX 2402 2802 SC 0410 32 PR11 1052 X X PR12 0991b Fig 3 21 Fig 3 22 PR11 1053 2 mm PR12 0991a Fig 3 23 Fig 3 24 ...

Page 33: ...tion Tighten the bolts to 200 Nm 20 kpm DISTANCE BETWEEN THE ROLLERS Fig 3 23 The distance between the rollers must be minimum 2 mm and the rollers must run without any particular noise IMPORTANT The distance should be checked before starting and must be measured from behind and between the rollers where the dimension 2 mm is indicated on the figure Check this at several places on the roller Fig 3...

Page 34: ...type GX SM and SC The below grease spots must be greased according to the operation time intervals indicated PR11 0976 1 1 2 2 8 h 40 h 8 h 40 h PR11 0992 GX SC PR11 0991 GX SC GX SM GX SM PIGB 093X 06 GX 2402 2802 3202 SM GX 2402 2802 SC 0410 34 ...

Page 35: ...ing hours Pay special attention to the sliding PROFILE TUBES of the PTO shaft They must be able to slide back and forth when the torque is heavy If you neglect to lubricate the profile tubes sufficiently it will result in high frictional forces seizing which will damage the profile tubes and in time also connecting shafts and gearboxes The shaft between the tractor and the machine is lubricated th...

Page 36: ...4 GREASING PIGB 093X 06 GX 2402 2802 3202 SM GX 2402 2802 SC 0410 36 PR12 0407 D D Fig 4 1 Fig 4 2 Fig 4 3 Fig 4 4 ...

Page 37: ...8 mm Average value This oil level must be an average of the level measured at both filling holes When the oil level has been checked wait 3 minutes if the oil is warm and check again If the oil is cold wait 15 minutes before checking the oil level again Oil change a The first change of oil in the cutter bar must be made after 10 working hours and then after every 200 working hours or at least once...

Page 38: ...4 GREASING PIGB 093X 06 GX 2402 2802 3202 SM GX 2402 2802 SC 0410 38 Fig 4 5 Fig 4 6 ...

Page 39: ...rheating which in the long term will damage the bearings BEVEL GEARBOX ABOVE THE CUTTER BAR Fig 4 5 Oil content 0 9 l Oil type API GL4 or GL5 SAE 80W 90 Oil level n Check the oil level after every 80 hours of operation Oil change a First oil change after 50 working hours and then after every 500 working hours or at least once a year BEVEL GEARBOX ON THE HEADSTOCK Fig 4 6 Oil content 540 rpm 1 1 l ...

Page 40: ...4 GREASING PIGB 093X 06 GX 2402 2802 3202 SM GX 2402 2802 SC 0410 40 PR11 0045 E Fig 4 7 Fig 4 8 ...

Page 41: ...is could block the oil supply Turn on the oil when starting the machine by turning the tap at F until it is approximately half open IMPORTANT Remember to turn off the tap taps again when stopping the machine The drip interval must be 2 3 drip minute This corresponds to a consumption of approximately 0 2 l oil per working day 10 hours Therefore adjust the drip interval by turning the tap to approxi...

Page 42: ...0 M 12 80 120 135 M 12x1 25 90 125 146 M 14 135 180 215 M 14x1 5 145 190 230 M 16 200 280 325 M 16x1 5 215 295 350 M 18 270 380 440 M 20 400 550 650 M 20x1 5 430 615 720 M 24 640 900 1100 M 24x1 5 690 960 1175 M 30 1300 1800 2300 Fig 5 1 PIGB 093X 06 GX 2402 2802 3202 SM GX 2402 2802 SC 0410 42 ...

Page 43: ...r if mounted and the machine according to the GENERAL SAFETY INSTRUCTIONS items 1 20 in the beginning of this instruction manual IMPORTANT Screws and bolts on your new machine must be retightened after some hours of operation This also applies if repairs have been made Fig 5 1 Correct torque moment MA if nothing else stated PIGB 093X 06 GX 2402 2802 3202 SM GX 2402 2802 SC 0410 43 ...

Page 44: ...5 MAINTENANCE PIGB 093X 06 GX 2402 2802 3202 SM GX 2402 2802 SC 0410 44 Fig 5 2 PR12 0709 A B D C Fig 5 3 ...

Page 45: ...e instruction manual for the PTO drive shaft delivered by the supplier IMPORTANT The outer metal band C indicates whether the tightening of the springs is correct Tighten the bolts D just so much that the metal band C can be turned max 0 5 mm play The torque setting is not correct if the metal band is too tight or deformed due to excessive tightening of the bolts WARNING If the clutch is overloade...

Page 46: ...5 MAINTENANCE PIGB 093X 06 GX 2402 2802 3202 SM GX 2402 2802 SC 0410 46 Fig 5 4 Fig 5 5 PR12 1193 G H PR12 0040 I Fig 5 6 Fig 5 7 Fig 5 8 Fig 5 9 ...

Page 47: ...de bolts and blades are made of high alloyed hardened materials This heat treatment provides especially hard and ductile material which is able to withstand extreme stress If a blade or a disc is damaged do not attempt to weld the parts together again as the generation of heat will weaken the parts Damaged blades discs blade bolts and nuts must be replaced by original JF spare parts to obtain a sa...

Page 48: ...5 MAINTENANCE PIGB 093X 06 GX 2402 2802 3202 SM GX 2402 2802 SC 0410 48 Fig 5 10 Fig 5 11 Fig 5 12 Fig 5 13 PR11 1194 90 Fig 5 14 Fig 5 15 ...

Page 49: ... and sharp Replacement of blades is made by dismounting the blade bolt and pull it out from beneath the disc This is easily done when the blade is in the front position so that the bolt can fall out through the hole in the stone protector Remove the old blade and mount the new one together with the blade bolt The blades can be used on both sides by moving the blades from one disc to another with o...

Page 50: ...5 MAINTENANCE PIGB 093X 06 GX 2402 2802 3202 SM GX 2402 2802 SC 0410 50 Fig 5 16 Fig 5 17 Fig 5 18 ...

Page 51: ...r to get out of balance which for instance will result in reduced life of the bearings TIGHTENING OF ROLLER CHAIN Fig 5 18 Press the sprocket wheel Z down towards the chain and tighten it WINTER STORAGE When the season is over the preparation for winter storage should be made immediately after First clean the machine thoroughly Dust and dirt absorb moisture and moisture increases the formation of ...

Page 52: ...Conditioner fingers may be worn or missing The distance between the conditioner plate and the conditioner rotor is too long Replace worn fingers and mount new ones where these are missing Adjust the conditioner plate to shorter distance to the rotor Increase the driving speed The machine vibrates uneven operation Blades may be deformed damaged or missing Defective PTO drive shafts Defective bearin...

Page 53: ...n on the first page in the spare parts book supplied with the machine as soon as possible so that you have the information at hand when ordering spare parts PR11 0344 MACHINE DISPOSAL When the machine is worn out it must be disposed of in a proper way Observe the following The machine must not be placed somewhere outside it must be emptied of oil gearboxes and hydraulic system These oils must be h...

Page 54: ......

Page 55: ...e such as expenses for oil grease and minor adjustments 2 Transport of machine to and from workshop 3 The dealer s travelling expenses or freight charges to and from the user Warranty is not granted on wearing parts unless it can clearly be proved that JF has committed a fault The following is regarded as wearing parts Protective canvases blades blade suspensions shearbars guide shoes stone protec...

Page 56: ...t of experience from right around the world and more importantly unique regional requirements We also receive important inspiration in our development work through a close and continuous dialogue with customers dealers and agricultural researchers No matter which type of JF STOLL machine you chose you can be sure to obtain the best result to obtain a top result in the shape of high performance and...

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