KUHN GMD24 User manual

Original instructions
KN226BGB_A
Read carefully before starting the machine
Operator's manual
Disc mower
---A1025-70B00001 > ---A1025-70B99999
GMD24-GMD28 / HD
KN226BGB_A - English - 07-2019
*KN226BGB_A*

1. - Dear Owner
GMD24-GMD28 / HD
3
KN226BGB_A
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

GMD24-GMD28 / HD
42. - Contents
KN226BGB_A
Disc mower
2. Contents
1. Dear Owner .....................................................................................................................3
2. Contents..........................................................................................................................4
3. Identification of the machine.........................................................................................7
3.1 Front view ........................................................................................................................................ 7
3.2 Rear view......................................................................................................................................... 7
3.3 Identification of the machine............................................................................................................ 8
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 coupling...............................................................................................14
4.2.6 Precautions when driving ................................................................................................. 14
4.2.7 Hydraulic circuit................................................................................................................ 15
4.2.8 Precautions when driving on public roads........................................................................ 15
4.2.9 Maximum speed...............................................................................................................19
4.2.10 PTO shaft..........................................................................................................................19
4.2.11 Waste disposal .................................................................................................................21
4.2.12 Remote controlled components........................................................................................21
4.2.13 Safety decals.................................................................................................................... 22
4.2.14 Precautions for maintenance and repair work.................................................................. 22
4.2.15 Projection of stones and foreign objects........................................................................... 23
4.2.16 Precautions during manoeuvres....................................................................................... 23
4.2.17 Precautions for machine use............................................................................................ 24
4.2.18 Precautions to take before using the parking stands........................................................ 24
4.3 Location and description of safety decals on the machine ............................................................ 25
4.3.1 Location of safety decals..................................................................................................25
4.3.2 Description of safety decals.............................................................................................. 26
4.4 Road safety equipment and recommendations ............................................................................. 29
4.5 Likely critical failures......................................................................................................................29
4.6 Incorrect use of the machine by the user....................................................................................... 30
4.7 Limit state criteria........................................................................................................................... 30

2. - Contents
GMD24-GMD28 / HD
5
KN226BGB_A
Disc mower
5. Machine specifications................................................................................................ 31
5.1 Description and glossary ............................................................................................................... 31
5.1.1 Designated use of the machine........................................................................................ 31
5.2 Technical specifications................................................................................................................. 32
5.2.1 Designated parameters.................................................................................................... 32
5.3 Required equipment...................................................................................................................... 33
5.3.1 PTO shaft ......................................................................................................................... 33
5.3.2 Cutter bar ......................................................................................................................... 33
5.4 Sound levels.................................................................................................................................. 34
6. Putting into service...................................................................................................... 35
6.1 Description of control elements ..................................................................................................... 35
6.2 Coupling and uncoupling............................................................................................................... 35
6.2.1 Description of coupling elements ..................................................................................... 35
6.2.2 Preparing the tractor......................................................................................................... 36
6.2.3 Preparing the machine..................................................................................................... 37
6.2.4 Coupling the machine.......................................................................................................38
6.2.5 Hydraulic connections......................................................................................................39
6.2.6 Electrical connection ........................................................................................................ 39
6.2.7 Check chain...................................................................................................................... 39
6.2.8 Primary PTO shaft............................................................................................................ 40
6.2.9 Adjusting the machine......................................................................................................41
6.2.10 Uncoupling the machine................................................................................................... 45
7. Instructions for transport............................................................................................ 47
7.1 Putting the machine into transport position ................................................................................... 47
7.2 Conformity with the road regulations............................................................................................. 49
7.3 Machine transport using transport means ..................................................................................... 49
8. Instructions for work................................................................................................... 50
8.1 Putting the machine into work position.......................................................................................... 50
8.2 Adjustments in working position .................................................................................................... 51
8.2.1 Cutting height................................................................................................................... 51
8.2.2 Outer swath disc............................................................................................................... 52
8.3 Machine use .................................................................................................................................. 53
8.3.1 Drive speed...................................................................................................................... 54
9. Optional equipment..................................................................................................... 55
9.1 1 3/8’’ - 6 spline pto shaft (With free wheel clutch)........................................................................55
9.2 Female coupler.............................................................................................................................. 55
9.3 Raised skid shoes ......................................................................................................................... 55
9.4 High cone disc kit .......................................................................................................................... 56
9.5 Inner swath disc............................................................................................................................. 56

GMD24-GMD28 / HD
62. - Contents
KN226BGB_A
Disc mower
9.6 Inner swath shield.......................................................................................................................... 56
9.7 Side deflector.................................................................................................................................57
9.8 Side deflector with high cone disk ................................................................................................. 57
9.9 Frame connection arm/cutterbar.................................................................................................... 57
9.10 Lighting and signalling ................................................................................................................... 58
9.10.1 Electrical connection.........................................................................................................58
9.11 Lateral signalling equipment (Only for France)..............................................................................58
9.12 Lighting and signalling (Only for USA)........................................................................................... 59
9.12.1 Electrical connection.........................................................................................................59
9.13 Compensating spring..................................................................................................................... 59
9.14 Toolbox .......................................................................................................................................... 60
9.15 Wear skids..................................................................................................................................... 60
10. Maintenance and storage ............................................................................................61
10.1 Frequency chart............................................................................................................................. 61
10.2 Lubrication .....................................................................................................................................62
10.2.1 PTO shafts........................................................................................................................ 63
10.2.2 Draining............................................................................................................................64
10.3 Maintenance .................................................................................................................................. 67
10.3.1 Belt tension....................................................................................................................... 67
10.3.2 Breather plug checking and cleaning ............................................................................... 69
10.3.3 Checking cutterbar oil level ..............................................................................................69
10.3.4 Inspection of knives and securing elements.....................................................................70
10.3.5 Knife replacement.............................................................................................................73
10.3.6 Disc replacement..............................................................................................................74
10.3.7 Outer and inner cones......................................................................................................75
10.4 Storage .......................................................................................................................................... 76
10.4.1 At the end of each season................................................................................................ 76
10.4.2 At the start of each season...............................................................................................76
10.4.3 Storage............................................................................................................................. 77
10.5 Dismantling and scrapping of the machine....................................................................................77
11. Troubleshooting guide.................................................................................................78
12. Appendix.......................................................................................................................79
12.1 Calculating the load on an axle...................................................................................................... 79
13. Limited Warranty ..........................................................................................................87

3. - Identification of the machine
GMD24-GMD28 / HD
7
KN226BGB_A
Disc mower
3. Identification of the machine
3.1 Front view
3.2 Rear view

GMD24-GMD28 / HD
83. - Identification of the machine
KN226BGB_A
Disc mower
3.3 Identification of the machine
- Do not remove the manufacturer,
homologation and marking plates attached
to the machine.
3.3.1 Location of the plates
- Please write below the type and serial number of
the machine:
• Serial Number:
- This information is to be given to the Kuhn
authorized dealer for any spare 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
3: Brand
kg
kg
12: Unladen Mass min/Max
3: 商 Brand
9: 机架号 Serial Nr. 34: Ex
5: 机器描述 Machine
7: 型号 Model
kg
12: 卸重量最小/最大Unladen Mass min/max kg
1
34
18
19
3
9a
5
7
12
28
27
9b
4

3. - Identification of the machine
GMD24-GMD28 / HD
9
KN226BGB_A
Disc mower
Certification plate (CE)
For machines aimed at countries which are
members of the European Union (EC marking).
4: KUHN logo
7: Model
9: Machine serial number
19: Plate reference
23: Logo CE
24: Manufacturing year
26: Model year
54: Data matrix
Certification plate (EAC)
For machines aimed at countries member 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: Model
9: Serial Nr.
23
54
4
19
7
9
24
26
25: Month-Year of Construction
26: Model Year
7: Model
9: Serial Nr.
23
54
4
26
25
7
9
19
24: Year of Construction
19
54 4
1
24
97

GMD24-GMD28 / HD
10 3. - Identification of the machine
KN226BGB_A
Disc mower
3.4 Optional equipment
- Tick box corresponding to the equipment fitted on
your machine:
GMD24 / HD
GMD28
GMD24-28 / HD
1 3/8’’ - 6 spline pto shaft (With free wheel clutch).
High cone disc kit.
Female coupler.
Raised skid shoes.
Inner swath disc.
Inner swath shield.
Anti-ridging plate.
Side deflector with high cone disk.
Frame connection arm/cutterbar.
Lighting and signalling.
Lateral signalling equipment (Only for France).
Lighting and signalling (Only for USA).
Auxiliary compensating spring.
Toolbox.
Wear skids.