KUHN HRB202 User manual

Original instructions
KN136JGB_D
Read carefully before starting the machine
Operator's manual
Power harrow
J0001 > J9999
HRB202-202S-252D-302D
KN136JGB_D - English - 01-2020
*KN136JGB_D*

1. - Dear Owner
HRB202-202S-252D-302D
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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 2020 KUHN

HRB202-202S-252D-302D
42. - Contents
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2. Contents
1. Dear Owner .....................................................................................................................3
2. Contents..........................................................................................................................4
3. Identification of the machine.........................................................................................9
3.1 Front view ........................................................................................................................................ 9
3.2 Rear view......................................................................................................................................... 9
3.3 Model identification plate ............................................................................................................... 10
3.4 Optional equipment.........................................................................................................................11
4. Safety.............................................................................................................................12
4.1 Description of symbols used in this document...............................................................................12
4.2 Safety instructions ......................................................................................................................... 13
4.2.1 Introduction....................................................................................................................... 13
4.2.2 Read and follow the safety instructions............................................................................ 13
4.2.3 Precautions to be taken before carrying out any operations on the machine................... 14
4.2.4 Precautions to take before using the machine ................................................................. 14
4.2.5 Precautions when driving ................................................................................................. 15
4.2.6 Precautions when driving on public roads........................................................................15
4.2.7 Maximum speed...............................................................................................................19
4.2.8 Precautions when coupling...............................................................................................19
4.2.9 Hydraulic circuit................................................................................................................ 20
4.2.10 PTO shaft..........................................................................................................................21
4.2.11 Precautions during manoeuvres....................................................................................... 22
4.2.12 Remote controlled components........................................................................................22
4.2.13 Safety decals....................................................................................................................22
4.2.14 Waste disposal .................................................................................................................23
4.2.15 Precautions for maintenance and repair work.................................................................. 23
4.2.16 Projection of stones and foreign objects........................................................................... 24
4.2.17 Precautions for machine use............................................................................................ 24
4.2.18 Precautions to take before using the parking stands........................................................ 25
Copyright 2020 KUHN

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4.3 Location and description of safety decals on the machine............................................................ 26
4.3.1 Location of safety decals..................................................................................................26
4.3.2 Description of safety decals ............................................................................................. 27
4.4 Road safety equipment and recommendations............................................................................. 28
4.5 Likely critical failures...................................................................................................................... 29
4.6 Incorrect use of the machine by the user ...................................................................................... 29
4.7 Limit state criteria........................................................................................................................... 29
5. Machine specifications................................................................................................ 30
5.1 Description and glossary ............................................................................................................... 30
5.1.1 Designated use of the machine........................................................................................ 31
5.2 Technical specifications................................................................................................................. 31
5.2.1 Designated parameters.................................................................................................... 31
5.3 Required equipment...................................................................................................................... 32
5.3.1 Intermediate PTO shaft .................................................................................................... 32
5.3.2 Power harrow blades........................................................................................................33
5.3.3 Rollers.............................................................................................................................. 33
5.4 Sound levels.................................................................................................................................. 36
6. Putting into service...................................................................................................... 37
6.1 Coupling and uncoupling............................................................................................................... 37
6.1.1 Description of coupling elements ..................................................................................... 37
6.1.2 Preparing the tractor......................................................................................................... 37
6.1.3 Preparing the machine..................................................................................................... 39
6.1.4 Coupling the machine.......................................................................................................40
6.1.5 Primary PTO shaft............................................................................................................ 42
6.1.6 Friction slip clutch............................................................................................................. 43
6.1.7 Shear bolt torque limiter (HRB202 - HRB202S)............................................................... 46
6.1.8 Cam type cut-out clutch....................................................................................................46
6.1.9 PTO output stub on gearbox............................................................................................ 51
6.2 Adjusting the machine ................................................................................................................... 51
6.2.1 Front/rear machine levelling............................................................................................. 51
6.2.2 Rotor speed (HRB202 - HRB202S).................................................................................. 52
6.2.3 Rotor speed adjustment (HRB252D / HRB302D) ............................................................ 53
6.2.4 Adjusting the roller scrapers............................................................................................. 55
6.2.5 Adjusting the scraper plate holder.................................................................................... 59
6.2.6 Adjusting the side deflectors ............................................................................................ 60
6.2.7 Roller rear offset adjustment ............................................................................................ 61
6.2.8 Crumbler roller adjustment............................................................................................... 62
6.2.9 Uncoupling the machine................................................................................................... 64
6.2.10 Handling........................................................................................................................... 65

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7. Instructions for transport ............................................................................................66
7.1 Putting the machine into transport position....................................................................................66
7.2 Conformity with the road regulations ............................................................................................. 67
7.3 Machine transport using transport means ..................................................................................... 67
8. Instructions for work....................................................................................................68
8.1 Putting the machine into work position .......................................................................................... 68
8.2 Adjustments in working position.....................................................................................................69
8.2.1 Working depth ..................................................................................................................69
8.3 Machine use .................................................................................................................................. 70
8.3.1 Drive speed ......................................................................................................................72
9. Optional equipment......................................................................................................73
9.1 Sets of gearwheels (HRB252D / HRB302D).................................................................................. 73
9.2 Standard linkage............................................................................................................................ 74
9.2.1 Adjustment........................................................................................................................ 74
9.3 Hydraulic lift linkage....................................................................................................................... 75
9.3.1 Location and description of safety decals on the machine............................................... 75
9.3.2 Coupling device................................................................................................................76
9.3.3 Adjustment........................................................................................................................ 77
9.3.4 Removal ...........................................................................................................................79
9.3.5 Putting the machine into transport position ...................................................................... 79
9.3.6 Putting the machine into work position............................................................................. 81
9.3.7 Optional equipment ..........................................................................................................81
9.3.8 Maintenance..................................................................................................................... 82
9.3.9 Storage............................................................................................................................. 83
9.4 Rear attachment with double acting hydraulic lift (HRB252D-HRB302D)...................................... 84
9.4.1 Location and description of safety decals on the machine............................................... 84
9.4.2 Coupling device................................................................................................................85
9.4.3 Removal ...........................................................................................................................88
9.4.4 Putting the machine into transport position ...................................................................... 88
9.4.5 Putting the machine into work position............................................................................. 89
9.4.6 Adjustments in working position ....................................................................................... 89
9.4.7 Maintenance..................................................................................................................... 91
9.4.8 Storage............................................................................................................................. 91
9.5 Track eradicators with flexible tines (HRB202 / HRB202S / HRB252D)........................................ 92
9.5.1 Fitting................................................................................................................................92
9.5.2 Coupling and uncoupling..................................................................................................93
9.5.3 Adjustments in working position ....................................................................................... 93
9.5.4 Maintenance..................................................................................................................... 94

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9.6 Track eradicators with traction bolt or spring overload mechanism (HRB302D) ........................... 95
9.6.1 Uncoupling the machine................................................................................................... 96
9.6.2 Adjustments in working position....................................................................................... 96
9.6.3 Safety............................................................................................................................... 97
9.6.4 Maintenance..................................................................................................................... 98
9.7 Front or rear levelling bar .............................................................................................................. 98
9.7.1 Adjustments in working position....................................................................................... 98
9.8 Lights and indicators.................................................................................................................... 100
9.8.1 Coupling and uncoupling................................................................................................ 100
9.9 Lateral signalling equipment........................................................................................................ 100
9.9.1 Instructions specific to France........................................................................................ 100
9.10 Front signalling elements (HRB252D-HRB302D)........................................................................ 101
9.10.1 Coupling and uncoupling................................................................................................ 101
9.11 USA signalling equipment ........................................................................................................... 101
9.12 Retractable side deflectors (HRB252D-HRB302D)..................................................................... 102
9.12.1 Coupling and uncoupling................................................................................................ 102
9.12.2 Maintenance................................................................................................................... 103
9.13 Universal arm kit (HRB252D-HRB302D)..................................................................................... 104
9.14 32X38-8 spline yoke (HRB252D-HRB302D)............................................................................... 104
9.15 Adaptation parts for VENTA LC (HRB302D) ............................................................................... 105
10. Maintenance and storage.......................................................................................... 106
10.1 Frequency chart........................................................................................................................... 106
10.2 Cleaning the machine.................................................................................................................. 107
10.2.1 Packer PK2 roller: (a)..................................................................................................... 107
10.2.2 Maxipacker roller: (b)...................................................................................................... 107
10.3 Lubrication................................................................................................................................... 108
10.3.1 Primary PTO shaft.......................................................................................................... 108
10.3.2 Trough.............................................................................................................................110
10.3.3 Draining...........................................................................................................................110
10.3.4 Greasing..........................................................................................................................113
10.4 Maintenance.................................................................................................................................114
10.4.1 Gearbox oil level check...................................................................................................114
10.4.2 Checking the blades and their mounting hardware.........................................................114
10.5 Storage.........................................................................................................................................118
10.5.1 At the end of each season...............................................................................................118
10.5.2 At the start of each season..............................................................................................119
10.5.3 Storage............................................................................................................................119
10.6 Dismantling and scrapping of the machine.................................................................................. 120
11. Troubleshooting guide .............................................................................................. 121

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12. Appendix.....................................................................................................................123
12.1 Calculating the load on an axle.................................................................................................... 123
13. Limited Warranty ........................................................................................................131

3. - Identification of the machine
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3. Identification of the machine
3.1 Front view
3.2 Rear view

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10 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
MASSEkg
KUHN S.A.
67700SAVERNE-FRANCE
N°
MADEINFRANCE
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

3. - Identification of the machine
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3.4 Optional equipment
- Tick box corresponding to the equipment fitted on
your machine:
HRB202/HRB202S/HRB252D/HRB302D
Standard linkage.
Hydraulic lift linkage.
Hydraulic lift linkage stroke limiters.
Front or rear levelling bar.
Rear signalling elements.
Lights and indicators.
Lateral signalling equipment.
USA signalling equipment.
HRB252D/HRB302D
Rear attachment with double acting hydraulic lift.
Set of gearwheels.
Front signalling elements.
Retractable side deflectors.
Universal arm kit HR/HRB.
32X38-8 spline yoke.
HRB202/HRB202S/HRB252D
Track eradicators with flexible tines.
HRB302D
Track eradicators with traction bolt or spring overload mechanism.
Adaptation parts for VENTA LC.

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4. Safety
4.1 Description of symbols used in
this document
This symbol indicates a potentially hazardous
situation that if not avoided, could result in serious
bodily injury.
Thissymbolis usedto 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.

4. - Safety
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4.2 Safety instructions
4.2.1 Introduction
The machine must only be operated, maintained
and repaired by competent persons who are familiar
with machines' specifications and operation and
aware of safety regulations for preventing
accidents.
The operator must imperatively respect safety
instructions in this manual and in the warnings
posted on the machine. The operator is also obliged
to respect current legislation concerning accident
prevention, work safety 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 other
than the designated operation is at the risk and
responsibility of the operator.
The manufacturer is not held liable for any damage
or accident resulting from machine modifications
carried out by the operator himself or by a third party
without previous written agreement from the
manufacturer.
4.2.2 Read and follow the safety instructions
- Before using the machine, carefully read all the
safety instructions in this manual and the warnings
placed on the machine.
- Before starting work, the operator must be familiar
with all machine controls, handling devices and
their functions. It 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.

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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 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.
4.2.4 Precautions to take before using the
machine
- Do not wear loose clothing which could become
caught up in moving parts.
- Wear the appropriate protective clothing for the
work in hand (gloves, shoes, goggles, helmet, ear
defenders, etc.).
- Ensure that all operating controls (ropes, cables,
rods, etc) are placed so as they cannot be
operated unintentionally and cause damage or
injury.
- Before operating the machine, check tightness of
nuts and bolts, particularly on fixing elements
(tines, forks, blades, knives, etc). Retighten if
necessary.
- Before operating the machine, ensure that all the
safety guards are firmly in place and in good
condition. Immediately replace any worn or
damaged guard.

4. - Safety
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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 abrupt changes of direction.
- Be particularly cautious when turning corners,
paying attention to machine overhang, length,
height and weight.
- Never use a narrow track tractor on very uneven or
steeply sloping ground.
- Never leave the tractor seat while the machine is
operating.
- Carrying people or animals on the machine when
working or in transport is strictly forbidden.
4.2.6 Precautions when driving on public
roads
Dimensions
Depending on the dimensions of the machine,
contact the relevant authorities to ensure that it can
be legally transported on public roads.
- If the machine is over the maximum legal size,
follow the local regulations for special
transportation of oversize equipment.
Transport position
- Before transporting 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.

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- Always obey current regulations for driving
on roads.
Gross weight and weight per axle
The drawings are not legally binding, their only
aim is to illustrate the method to use.
- Prior to driving on public roads, check that
all criteria are met to be in conformity with
the countrie's regulations:
- When coupling a tool to the front and/or
rear 3-point lift linkage, the maximum
authorized payload must not be exceeded.
- When coupling tools to the front and/orrear
3-point lift linkages, the maximum load on
tractor's tires must not be exceeded.
The load on the tractor front axle must
always represent 20 % of the tractor unladen
weight.
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.

4. - Safety
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Description of symbols
Descri
ption Units Description
T kg Tractor unladen weight
PTAC kg Gross Combined Weight Rating
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)
t1 Max kg Maximum load authorized on the tractor front axle
according to the tires
t2 Max kg Maximum load authorized on the tractor rear axle
according to the tires
M1 kg Total weight of front tool or front ballast
How to proceed:
Stage 1:
- To measure:
• Tractor tare (T).
T = _____kg
T = ________ kg

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Stage 2:
- Couple the machine to the tractor.
- To measure:
Load on front axle (t1):
• Tractor + machine (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).
The front axle load must be of minimum 1500 kg
(3300 lb). (20% of T).
• (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.
Stage 3:
- To measure:
Total weight (t):
• Tractor + machine (transport position).
• Ballast weights.
Checking:
- To go to the next stage:
- Check in the tractor's operator's manual that the
value measured is below the tractor's Gross
Combined Weight Rating.
- To do:
- If t < PTAC go to the next stage.
- 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.
- Repeat checking procedure.
Example:
• (t) =10000 kg (22046 lb).
• PTAC = 13000 kg (28660 lb).
- t < PTAC: Go to the next stage.
t1 = _____kg
t1 < 20% Tt1 < 20% T
t1t1 ≥20% T20% T
t1 = ________ kg
kgkg
t = _____kg
t = ________ kg

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Stage 4:
- 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:
• Load on rear axle (t2) = 8500 kg (18740 lb).
- 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.
4.2.7 Maximum speed
- Always keep to the legal speed limit for driving a
tractor-machine assembly on public roads.
4.2.8 Precautions when coupling
- Before attaching the machine, make sure that it
cannot accidentally start moving (chock the
wheels) and that the parking stand is in the right
position.
- The machine must only be attached to the hitch
points provided for this purpose.
- Do not stand between the machine lower hitching
points or between the tractor lower hitching points
during coupling maneuvers.
- Never stand between the tractor and the machine
when operating the three point linkage.
- Do not stand between the machine and the tractor
or on the machine without having first applied the
tractor parking brake and placedthe gearbox in the
neutral position.
kgkg
t2 = _____kg
t2 > t2 maxt2 > t2 max
t2t2 ≤t2 maxt2 max
t2 = ________ kg

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4.2.9 Hydraulic circuit
Caution! The hydraulic circuit is under high
pressure. Maximum pressure at work: 200 bar
(2901 psi).
- Before connecting hoses to the tractor hydraulics,
ensure that tractor and machine circuits are not
under pressure.Before disconnecting a hose,
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 immediately be replaced. When replacing the
hydraulic hoses, only use hoses with the
specification recommended by the manufacturer of
the machine.
- To locate a leak, use appropriate means. Protect
body and hands from liquid under pressure.
- Any liquid under pressure (particularly oil from
hydraulics) can penetrate the skin and cause
severe injury. If injured, see a doctor immediately,
there could be danger of infection.
- Before any adjustments, maintenance or repairs
are carried out, lower the machine to the ground,
depressurize the hydraulics, turn off the engine,
remove ignition key and wait until all moving parts
have come to a complete stop.