KUHN GMD240 User manual

Original instructions
KN204BGB_G
Read carefully before starting the machine
B0001 > B9999
KN204BGB_G - English - 04-2019
Operator's manual
Disc mower
GMD240 - 280 - 310
*KN204BGB_G*

1. - Dear Owner
GMD240 - 280 - 310
3
KN204BGB_G
Disc mower
1. Dear Owner
In buying a Kuhn machine you have chosen wisely. Into it have gone years of thought, research and
improvement. You will find, as have thousands of owners all over the world, that you have the best that
engineering skill and actual field testing can produce. You have purchased a dependable machine, but only
through proper care and operation can you expect to receive the performance and long service built into it.
This manual contains all the necessary information for you to receive full efficiency from your machine. The
performance you get from this machine is largely dependent on how well you read and understand this
manual and apply this knowledge. Please DO NOT ASSUME YOU KNOW HOW TO OPERATE AND
MAINTAIN YOUR MACHINE before reading this manual carefully. KEEP THIS 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
andcarefullyinspectedinthesamefactorythatbuilds the machineto assure high quality and accurate fitting
of any necessary replacements.
About improvements
We are continually striving to improve our products. We therefore reserve the right to make improvements
or changes when it becomes practical to do so, without incurring any obligations to make changes or
additions to the equipment sold previously.
Wear parts
Wearing parts fitted on our machines have been tested in very different situations to optimize their service
life. Nevertheless, the service life depends highly on the conditions of use (products to handle, soil, weather
conditions, etc...).
Document illustrations
The illustrations in this manual may be based on one type of machine only. However, all instructions apply
to all machines covered in this manual.
Copyright 2019 KUHN

GMD240 - 280 - 310
42. - Contents
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2. Contents
1. Dear Owner .....................................................................................................................3
2. Contents..........................................................................................................................4
3. Identification of the machine.........................................................................................8
3.1 Front view ........................................................................................................................................ 8
3.2 Rear view......................................................................................................................................... 8
3.3 Model identification plate ................................................................................................................. 9
3.4 Optional equipment........................................................................................................................ 10
4. Safety.............................................................................................................................11
4.1 Description of symbols used in this document................................................................................11
4.2 Safety instructions ......................................................................................................................... 12
4.2.1 Introduction....................................................................................................................... 12
4.2.2 Read and follow the safety instructions............................................................................12
4.2.3 Precautions to be taken before carrying out any operations on the machine................... 13
4.2.4 Precautions to take before using the machine ................................................................. 13
4.2.5 Precautions when driving ................................................................................................. 14
4.2.6 Precautions when driving on public roads........................................................................ 14
4.2.7 Maximum speed...............................................................................................................18
4.2.8 Precautions during manoeuvres....................................................................................... 18
4.2.9 Hydraulic circuit................................................................................................................ 19
4.3 Limit state criteria........................................................................................................................... 19
4.3.1 PTO shaft.......................................................................................................................... 20
4.3.2 Remote controlled components........................................................................................ 21
4.3.3 Safety decals.................................................................................................................... 21
4.3.4 Waste disposal ................................................................................................................. 22
4.3.5 Precautions when coupling...............................................................................................22
4.3.6 Precautions to take before using the parking stands........................................................ 22
4.3.7 Incorrect use of the machine by the user .........................................................................23
4.3.8 Projection of stones and foreign objects........................................................................... 23
4.3.9 Precautions for maintenance and repair work.................................................................. 24
4.3.10 Precautions for machine use............................................................................................ 25
4.3.11 Likely critical failures......................................................................................................... 25
4.4 Location and description of safety decals on the machine ............................................................ 26
4.4.1 Location of safety decals..................................................................................................26
4.5 Road safety equipment and recommendations ............................................................................. 31

2. - Contents
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5. Machine specifications................................................................................................ 33
5.1 Description and glossary ............................................................................................................... 33
5.2 Technical specifications................................................................................................................. 34
5.3 Required equipment...................................................................................................................... 36
5.3.1 Primary PTO shaft............................................................................................................ 36
5.3.2 Mechanical safety release................................................................................................ 36
5.3.3 Cutter bar ......................................................................................................................... 37
5.4 Sound levels.................................................................................................................................. 38
6. Putting into service...................................................................................................... 39
6.1 Description of control elements ..................................................................................................... 39
6.2 Coupling and uncoupling............................................................................................................... 40
6.2.1 Description of coupling elements ..................................................................................... 40
6.2.2 Preparing the tractor......................................................................................................... 40
6.2.3 Preparing the machine..................................................................................................... 42
6.2.4 Coupling the machine.......................................................................................................44
6.2.5 Hydraulic connections......................................................................................................45
6.2.6 Electrical connection ........................................................................................................ 46
6.2.7 Primary PTO shaft............................................................................................................ 46
6.2.8 Adjusting the machine......................................................................................................48
6.2.9 Uncoupling the machine................................................................................................... 48
7. Instructions for transport............................................................................................ 51
7.1 Putting the machine into transport position ................................................................................... 51
8. Instructions for work................................................................................................... 54
8.1 Putting the machine into work position.......................................................................................... 54
8.2 Putting the machine in headland turn position............................................................................... 56
8.2.1 Adjustment ....................................................................................................................... 57
8.3 Adjustments in working position .................................................................................................... 57
8.3.1 Cutting height................................................................................................................... 58
8.3.2 Swathing system.............................................................................................................. 58
8.3.3 Compensating spring tension........................................................................................... 59
8.4 Machine use .................................................................................................................................. 60
8.4.1 Headland turn maneuvers................................................................................................ 61
8.4.2 Drive speed...................................................................................................................... 61
8.4.3 Machine safety................................................................................................................. 62

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62. - Contents
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9. Optional equipment......................................................................................................65
9.1 1 3/8’’ - 6 spline pto shaft............................................................................................................... 65
9.2 32 x 38 - 8 spline pto shaft............................................................................................................. 65
9.3 High cone disc kit........................................................................................................................... 65
9.4 Inner swath disc............................................................................................................................. 66
9.5 Inner swath shield.......................................................................................................................... 66
9.6 Raised skid shoes.......................................................................................................................... 67
9.7 Side deflector.................................................................................................................................67
9.8 Side deflector with high cone disk ................................................................................................. 68
9.9 Frame connection arm/cutterbar.................................................................................................... 68
9.10 Longer hitch pins ........................................................................................................................... 68
9.11 Chain stroke limiter........................................................................................................................ 69
9.11.1 Adjusting the machine ......................................................................................................70
9.12 Lighting and signalling ................................................................................................................... 71
9.12.1 Electrical connection.........................................................................................................71
9.13 Lateral signalling equipment (for France) ......................................................................................71
9.14 Lighting and signalling (Only for USA)........................................................................................... 72
9.15 Quick hitch connector .................................................................................................................... 72
9.16 Drive kit 1000 rpm.......................................................................................................................... 72
9.17 Wear skids..................................................................................................................................... 73
10. Maintenance and storage ............................................................................................74
10.1 Frequency chart............................................................................................................................. 74
10.2 Lubrication .....................................................................................................................................75
10.2.1 PTO shaft.......................................................................................................................... 76
10.2.2 Grease..............................................................................................................................77
10.2.3 Draining............................................................................................................................79
10.3 Maintenance .................................................................................................................................. 82
10.3.1 Belt tension....................................................................................................................... 83
10.3.2 Checking cutterbar oil level ..............................................................................................83
10.3.3 Check angle gearbox oil level........................................................................................... 85
10.3.4 Breather plug checking and cleaning ...............................................................................85
10.3.5 Inspection of knives and securing elements.....................................................................86
10.3.6 Spring plate replacement................................................................................................ 100
10.3.7 Outer and inner cones....................................................................................................101
10.4 Storage ........................................................................................................................................ 101
10.4.1 At the end of each season.............................................................................................. 101
10.4.2 At the start of each season............................................................................................. 102
10.5 Dismantling and scrapping of the machine.................................................................................. 102
10.5.1 Storage...........................................................................................................................103

2. - Contents
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11. Troubleshooting guide.............................................................................................. 104
12. Appendix.....................................................................................................................106
12.1 Calculating the load on an axle ................................................................................................... 106
13. Limited Warranty........................................................................................................ 113

GMD240 - 280 - 310
83. - Identification of the machine
KN204BGB_G
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3. Identification of the machine
3.1 Front view
3.2 Rear view

3. - Identification of the machine
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3.3 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.
• (1) The manufacturer:
• (2) Type :
• (3) Serial Number:
• (4) Weight:
According to the country of destination,
additional plates can be fitted on the
machine.
For machines aimed at countries which are
members of the European Union (EC marking):
• (5) Manufacturing year:
For machines aimed at countries member of the
Eurasian customs union (EAC marking):
• (6) Model year:
• (7) Manufacturing year:
TYPE
MASSE kg
KUHN S.A.
67700 SAVERNE- FRANCE
N°
MADEIN FRANCE
TYPE
MASSE kg
KUHN S.A.
67700 SAVERNE - FRANCE
N°
MADE IN FRANCE
1
3
2
4
5
09993600
25: Year of Construction
0000
00/0000
26: Model Year
7
6

GMD240 - 280 - 310
10 3. - Identification of the machine
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3.4 Optional equipment
- Tick box corresponding to the equipment fitted on
your machine:
GMD240-280
Inner swath disc.
Inner swath shield.
GMD280
High cone disc kit.
GMD240-280-310
1 3/8’’ - 6 spline pto shaft.
32 x 38 - 8 spline pto shaft.
Raised skid shoes.
Side deflector.
Side deflector with high cone disk.
frame connection arm/cutterbar.
Longer hitch pins.
Chain stroke limiter.
Lighting and signalling.
Lighting and signalling (for France).
Lighting and signalling (only for USA).
Quick hitch connector.
Wear skids.
GMD310
Drive kit 1000 rpm