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OPERATOR'S MANUAL
KN149BGB A
Gyrorake
GA300G
KN149BGB A
- English - 02-2010
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Gyrorake
GA300G
$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 th is 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 ar e manufactured and
carefully inspected in the same factory that builds the machine to assure high quality and accurate fitting of any
necessary replacements.
About improvements
We are continually striving to improve our products. It therefore reserves 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.
Designated use of the machine
The GA300G Gyro rake must only be used for the work for which it has been designed: raking on the ground
and forming windrows of pre-mowed fodder and straw.
Dear Owner
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Gyrorake
GA300G
$Contents
Dear Owner.....................................................................................................................1
Contents..........................................................................................................................2
Identification of the machine.........................................................................................4
Front view..........................................................................................................................................4
Rear view.. .......................................... ... .... ... ... .......................................... ... ... .... ... ... ........................4
Model identification plate ................................................................................................................5
Optional equipment..........................................................................................................................5
Safety...............................................................................................................................6
Description of symbols used in this document.............................................................................6
Safety instructions...........................................................................................................................7
Location and description of safety decals on the machine .......................................................18
Machine specifications................................................................................................20
Description and glossary...............................................................................................................20
Technical specifications............. ... ... ... .... ... ... ... ... .... ............................................. ... ... .... ... ............21
Sound levels ......... ... ... .... ... ... ... .... ............................................. ......................................................22
Putting into service......................................................................................................23
Coupling and uncoupling..............................................................................................................23
Instructions for transport............................................................................................31
Putting the machine into transport position................................................................................31
Conformity with the road regulations...........................................................................................32
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Contents
Page 5
Gyrorake
GA300G
Instructions for work...................................................................................................33
Putting the machine into work position............. ..........................................................................33
Adjustments in working position..................................................................................................34
Machine use....................................................................................................................................38
Optional equipment.....................................................................................................39
Front support wheel.......................................................................................................................39
Lights and indicators.....................................................................................................................41
Maintenance and storage............................................................................................ 42
Lubrication............................................................................................ ..........................................43
Maintenance....................................................................................................................................45
Storage............................................................................................................................................45
Trouble shooting guide...............................................................................................46
Appendix ......................................................................................................................47
Calculating the load on an axle.....................................................................................................47
Limited warranty..........................................................................................................53
Contents
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Page 6
1. Front view
Gyrorake
GA300G
$Identification of the machine
2. Rear view
4
Identification of the machine
Page 7
3. Model identification plate
Please write below the type and serial number of the
machine. This information is to be indicated to the dealer
for all spare parts orders.
Gyrorake
GA300G
Type: GA300G
Serial no.:
4. Optional equipment
Tick box corresponding to the equipment fitted on your
machine:
Kit no. 1136070: Front support wheel.
Kit no. 1136290: Lighting and signalling.
Identification of the machine
5
Page 8
$Safety
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.
Gyrorake
GA300G
This symbol is used to identify special instructions or
procedures which, if not followed strictly, could result in
machinery damage.
This symbol is used to communicate technical
information of particular interest.
6
Safety
Page 9
Gyrorake
GA300G
2. Safety instructions
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 fo r 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 le gislation concerning accident prevention, wo rk 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 a nd acce sso ries, as r ecom mended
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 re sulting from machine modifications carried out
by the operator himself or by a third party without previous written agreement from the manufacturer.
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 traine d
to do so.
Should you have any difficulties in understanding certain
parts in this manual, please contact your KUHN dealer.
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.
Safety
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Page 10
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.
Gyrorake
GA300G
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 change s
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.
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Safety
Page 11
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
Gyrorake
GA300G
Before transporting the machine on public road s, ensure
that all legally required lightings and signallings are in
place.
Ensure that lightings and signallings are clean and in
good working order. Replace any missing or broken
equipment.
Always obey current regulations for driving
on roads.
Safety
9
Page 12
Gyrorake
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 criteria a re met to be in conformity with th e countrie's
regulations:
- When coupling a tool to the front and rear 3-point lift linkage, the maximum authorized
payload must not be exceeded.
- When coupling tools to the front and rear 3-point lift linkages, the maximum load on each
axle's tires must not be exceeded.
- The load on the tractor front axle must always represent 20 % of the tracto r 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.
GA300G
Description of symbols
Description 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
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Safety
Page 13
Stage 1:
To measure:
- Tractor tare (T).
Gyrorake
GA300G
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.
Safety
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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.
Example:
• (t) = 10000 Kg (24250 lb)
• PTAC = 13000 Kg .
• t < PTAC : Go to the next stage.
Gyrorake
GA300G
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.
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Safety
Page 15
Maximum speed
Always keep to the legal speed limit for driving a tractormachine assembly on public roads.
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.
Never stand between the tractor and the machine when
operating the three point linkage.
Do not stand between the tractor and the machine
without ensuring that the parking brake is applied.
Gyrorake
GA300G
Safety
13
Page 16
PTO shaft
Use only PTO shafts supplied with the machine or
recommended by the manufacturer.
The protective shield of the tractor PTO stub, the PTO
shaft guards and the protective covering of the machine
input shaft must always be in place and in good
condition.
Make sure that the PTO shaft guards are secured with
the safety chains provided.
Any worn or damaged guards must be replaced
immediately. A worn guard or an unpro tecte d PTO shaft
can cause a serious or even a lethal accident.
Do not wear loose clothing that could be caught in the
rotating PTO shaft.
Before attaching or removing a PTO shaft, or before
doing any work on the machine, disengage the PTO
drive, turn off the engine, remove ignition key and wait
for all moving parts have come to a complete stop.
If the primary PTO shaft is equipped with a slip clutch or
a free wheel, these must be fitted on the machine side.
Ensure that the PTO shaft is always correctly fitted and
locked into place.
Before connecting the PTO shaft, ensure that the PTO
speed (rotational frequency) and directions of rotation
are in line with manufacturer's recommendat ion s.
Before engaging the PTO drive, make sure all people
and animals are clear from the machine. Never engage
the PTO drive when the tractor engine is stopped.
When uncoupling the machine, rest the PTO shaft on the
support specially provided, and replace protective cover
on the PTO stub of the tractor.
Read and follow the instructions in the operator's manual
provided with the PTO shaft.
Gyrorake
GA300G
14
Safety
Page 17
Precautions during manoeuvres
When moving the machine from the transport position to
the working position and vice versa, make sure that
nobody is within the machine pivoting area.
Remote controlled components
Danger of crushing and shearing can exist when
components are operated by hydraulic or pneumatic
controls. Keep away from these danger zones.
Tyres
Regularly check the tyre pressure. Respect
manufacturers' recommendations on pressure.
Assembly, disassembly and repair of wheels and tyres
must only be carried out by competent persons who are
equipped with standardized tools. Before any work is
performed on the wheels, ensure that the machine rests
on the ground and is perfectly stable so that it cannot
move accidentally (put chocks in place).
Gyrorake
GA300G
Safety decals
Safety warning decals are placed in pictorial form on
various parts of the machine. They are there to warn you
of potential dangers and to tell you how to avoid
accidents.
Always keep the safety decals clean and readable, and
replace them when they are worn, damaged, missing or
illegible.
Waste disposal
Respect the environment! Never spill pollutants (oil,
grease, filters, etc.) on the ground, never pour them
down the drain and never discard them in any other
place where they could pollute the environment. Never
throw away or burn a tyre. Always take waste to
specialized recycling or waste disposal centers.
Safety
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Page 18
Precautions for maintenance and repair
work
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.
Rest the machine on the gr ound, release the pressure
from the hydraulic circuit and leave the machine to cool
down.
Make sure that the parts of the machine that need to be
lifted for maintenance or repair work are firmly propped
up.
Before any work is done on the electric circuit or before
any electric welding is carried out on the attached
machine, disconnect the machine from the tractor
electrical circuit. Also disconnect alternator and battery
terminals.
Repairs on elements under pressure or tension (springs,
pressure accumulators, etc.) must only be carried out by
competent persons with regulation equipment.
Wear the appropriate protective clothing for the work in
hand (gloves, shoes, goggles, helmet, ear defenders,
etc.).
Do not solder, weld or use a blow torch near fluids under
pressure or inflammable products.
For your own safety and for correct machine operation,
only use original manufacturer parts.
Gyrorake
GA300G
Projection of stones and foreign objects
For driver safety, always use a tractor equipped with a
cab. Never start a gyrorake when there are people
nearby. Even when the machine is used in accordance
with its purpose, objects may be projected. Stones and
other foreign objects projected by the moving parts can
travel a considerable distance. Keep all persons and
animals away from the danger zone.
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Safety
Page 19
Precautions for machine use
Before using the machine, check tools (tines) and their
attachment hardware in accordance with the instructions
of the present manual.
Check the guards regularly. Immediately replace any
damaged or missing elements.
Before engaging the pto drive, lower the rotors onto the
ground. Make sure all the guards are in place. Keep all
persons and animals away from the danger zone.
Stay a safe distance from the G yror ake when rotor s are
moving.
Never reverse while raking.
After the power source has stopped, the rotors can
continue turning for a time. Stay away from the machine
until all moving parts have come to a complete standstill.
If an obstacle is hit, disengage the PTO drive, stop the
tractor engine, remove the ignition key and wait for all
moving parts to come to a complete standstill. Check the
entire machine for any damage before resuming work.
Gyrorake
GA300G
Safety
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Page 20
3. Location and description of safety decals on the machine
Location of safety decals
Gyrorake
GA300G
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Safety
Page 21
Description of safety decals
Operating instructions (1)
The operators' manual contains all the information
necessary for using the machine safely. It is imperative
to read and comply with all instructions.
Working on the machine (2)
Before leaving the tractor or before adjusting,
maintaining or repairing the machine, disengage the
PTO drive, turn off the engine, remove ignition key and
wait until all moving parts have come to a complete stop
and apply park brake.
Gyrorake
GA300G
Projections (3)
Stones and other debris projected by the moving parts
can travel a long distance. Always stay at a safe distance
from the machine.
Rotary tools (4)
To prevent entanglement keep a safe distance fro m the
machine.
Safety
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Page 22
$Machine specifications
1. Description and glossary
0
Gyrorake
GA300G
1 : Three-point hitch coupler 2 : Parking stand
3 : Tine arms 4 : Rotor
5 : Swath screen 6 : Wheels
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Machine specifications
Page 23
2. Technical specifications
Coupling device 3 point linkage category 1 and 2
Number of rotors 1
Rotor diameter 2.64 m (8’8’’)
Number of arms per rotor 9
Number of tines per arm 3
Gyrorake
GA300G
Working width (DIN 11220)
(with single windrow)
Swath width 0.80 m (2’7’’) (approximately)
Width in working position 3.20 m (10’6’’)
Length in working position 2.95 m (9’8’’)
Height in working position 1.20 m (3’11’’)
Width in transport position 2.80 m (9’2’’)
Length in transport position 2.95 m (9’8’’)
Height in transport position 1.20 m (3’11’’)
Power requirement 15 kW (20 hp)
PTO speed (max.) 540 min
Weight 280 kg ( 617lb)
Tyres 15 / 6x6
Tyre pressure 2bar(29psi)
3.20 m (10’6’’)
-1
Machine specifications
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Page 24
3. Sound levels
Sound levels have been measured in accordance with the measuring methods as defined in:
NF EN ISO 4254-1 «Agricultural machinery - Safety - Part 1: General requirements».
Weighted equivalent continuous acoustic pressure level at the driver's seat (closed cabin) L (A) eq:
Tractor only: 72.8 dB(A)
Tractor + machine: 73.9 dB(A)
Gyrorake
GA300G
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Machine specifications
Page 25
$Putting into service
1. Coupling and uncoupling
Description of coupling elements
- A PTO shaft (1).
- A parking stand (2).
- A 7-pin electric plug for the electrical signalling
equipment (optional equipment ).
Gyrorake
GA300G
Preparing the tractor
The machine adapts to tractors fitted with a 3-point hitch
coupler category 1 or 2.
The tractor nominal PTO speed must be 540 min
Hitch pin parallelism
Adjust tractor lift rods so that hitch pins are parallel to th e
ground.
-1
.
Putting into service
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Page 26
Lateral adjustment of the lower linkage arms
Balance the play on either sides of the lift linkage and lock lower link stabilizers.
Gyrorake
GA300G
24
Putting into service
Page 27
Coupling the machine
- Lower the tractor three-point linkage.
- Position ball joints of tractor lower links in line with
machine lower yokes.
Categories of linkage
Gyrorake
GA300G
For attachment category 1:
- Place lower links in position (1).
- Secure each lower link with lynch pin.
For attachment category 2:
- Place lower links in position (2).
- Secure each lower link with lynch pin.
Putting into service
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Page 28
- Attach the top link to the machine top hitch pin.
- Secure with R-clip.
- Adjust the top link length so that the machine is
horizontal with regards to the ground.
- Lift the machine using the tractor lift linkage until the
parking stand no longer rests on the ground.
- Remove R-clip (1).
- Lift parking stand (2 ) .
- Insert R-clip (1) to lock parking stand (2).
Gyrorake
GA300G
Electrical connections
When the following equipment is fitted:
- Connect 7-pin plug to the tractor.
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Putting into service
Page 29
PTO shaft
Make sure that the PTO shaft is correctly
adjusted, to avoid premature wear and tear.
Separate the two half PTO shafts and connect them to
the machine's input shaft and to the tractor PTO stub.
Check the length of the PTO shaft:
- Check the maximum overlap when the machine is in
transport position and the tractor turned to the
direction which provides maximum overlap.
- When the PTO shaft is in its maximum overlap
position (retracted), tubes should not butt against the
yokes. As a safety measure, a clearance (L) of at least
25 mm (1’’) must be maintained.
- When the PTO shaft is in its maximum extended
position, the tube overlap must be more than
250 mm (10’’).
If this is not the case:
Gyrorake
GA300G
• Mark length (H) to cut when the transmission is the
maximum overlap position.
• Shorten the guard tubes and the transmission tub es
by the same length.
• Bevel and clean the tubes.
• Grease the inside of the outer tube.
Check that there is still a minimum overlap of
250 mm (10’’) when the machine is in working
position and the tractor in line with the machine.
Never operate the PTO shaft at an angle X exceeding
30°.
Putting into service
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Page 30
To avoid serious accidents, the PTO drive
shaft guards must be properly in place and
fixed with the chains provided.
Attach PTO shaft guard chain in hole (1) on machine
side.
Immediately replace any worn or damaged
guard.
Gyrorake
GA300G
28
Putting into service
Page 31
Uncoupling the machine
Park the machine on an even fairly level
ground.
From the transport position:
- Remove R-clip (1).
- Lower parking stand (2).
- Insert R-clip (1) to lock parking stand (2).
Gyrorake
GA300G
- Lower tractor lift linkage to rest the machine on the
parking stand.
- Disconnect the PTO shaft from the tractor.
- Secure PTO shaft into its' support (1).
Putting into service
29
Page 32
- Uncouple lower linkage arms.
- Detach the top link from the machine end.
The machine is uncoupled.
Gyrorake
GA300G
30
Putting into service
Page 33
$Instructions for transport
Before placing the machine into transport
position:
- Wait until the rotating parts have come
to a complete stop.
- Check that nobody is within the machine
operating area.
1. Putting the machine into transport position
Gyrorake
GA300G
From the working position:
- Place windrow curtain in the position closest to the
rotor:
• Remove pin (1).
• Move windrow curtain beam (2) to position (a).
• Insert and lock pin (1).
- Lift the machine with the tractor's three point linkage.
The lock engages and locks the front frame.
The machine is in transport position.
When optional equipment is used, follow
specific procedures mentioned in the related
section: ’’Optional equipment’’.
Never engage the tractor PTO drive when t he
machine is in transport position.
Instructions for transport
31
Page 34
2. Conformity with the road regulations
Before driving the machine on public roads,
ensure that the machine complies with
current highway code regulations.
Always keep to the legal speed limit for driving a tractormachine assembly on public roads.
When the following equipment is fitted:
Lighting and signalling:
- Check that the light boards are clean and that the
lighting equipment functions before transporting the
machine on public roads.
Gyrorake
GA300G
Immediately replace any worn or damaged
signalling panels or lights.
32
Instructions for transport
Page 35
$Instructions for work
Before placing the machine in working
position:
- Check that nobody is within the machine
pivoting area.
- If there is someone, make sure the
person moves away.
1. Putting the machine into work position
Gyrorake
GA300G
From the transport position:
- Remove pin (1).
- Move windrow curtain beam (2) to the required
position (3): 4 positions are possible (3).
- Insert and lock pin (1).
- Lower the tractor three-point linkage to rest the
machine on the ground.
The tractor lift linkage must be in floating
position.
The machine is in working position.
When optional equipment is used, follow
specific procedures mentioned in the related
section: ’’Optional equipment’’.
Instructions for work
33
Page 36
2. Adjustments in working position
Before manoeuvring the machine:
- Check that nobody is within the machine
pivoting area.
- If there is someone, make sure the
person moves away.
Wheel height adjustment
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.
Gyrorake
GA300G
- Raise machine using tractor lift linkage so that wheels
are no longer in contact with the ground.
- Loosen counter nut (1).
- Loosen screw (2).
- Position wheel at the required height.
- Tighten screw (2).
- Tighten counter nut (1).
Proceed the same way on the other side.
Adjust the 2 wheels to the same height.
The adjustment is correct when :
- Tines slightly skim the ground.
- Tine arms are level.
34
Instructions for work
Page 37
Swath screen adjustment
There are 3 windrow curtain adjustment possibilities.
- Lateral adjustment.
- Lengthways adjustment.
- Vertical adjustment.
Lateral adjustment:
• Remove pin (1).
• Move windrow curtain beam (2) to the required
position (3): 4 positions are possible.
• Insert and lock pin (1).
Gyrorake
GA300G
In dense crop, increase distance between swath
screen and rotor.
In very dense crop, the machine can form single swaths.
Instructions for work
35
Page 38
In light crop, the machine can form double swaths.
Fold windrow curtain to form double windr ow s.
Gyrorake
GA300G
Lengthways adjustment:
The lengthways adjustment is combined with the
sideways adjustment.
The windrow curtain can be set forwards or backwards
according to the crop density and the windrow width
adjustment.
The forward position is used for green fodder
and narrow windrows.
- Remove bolts (1) and nuts (2).
- Adjust swath screen position (3).
- Reinstall bolts (1) and nuts (2):
• Torque to 4.9 daN m (37 lbf ft).
36
Instructions for work
Page 39
Vertical adjustment:
The windrow curtain can be adjusted in 3 positions:
- (1):High position.
- (2):Central position.
- (3):Low position.
- Remove bolts (1) and nuts (2).
- Adjust swath screen position (3).
- Reinstall bolts (1) and nuts (2):
• Torque to 4.9 daN m (37 lbf ft).
Gyrorake
GA300G
In most cases, position swath screen in the
central position.
The upper position is used in very irregular grou nds or in
very dense crop.
The low position is used in low density crop.
Instructions for work
37
Page 40
3. Machine use
Before engaging the tractor PTO drive:
Keep all persons and animals away from the
machine danger zone.
- Place the machine in working position.
Before the machine engages the crop:
- Engage the tractor PTO drive and accelerate
progressively up to the desired PTO speed.
Gyrorake
GA300G
The PTO speed is generally comprised
between 400 and 500 min
exceed 540 min
Determine groundspeed/engine speed ratio that
is best suited to the work conditions.
Groundspeed
Groundspeed must be adapted to the encountered
working conditions.
Reduce groundspeed in difficult working
conditions.
-1
.
-1
and must not
38
Instructions for work
Page 41
$Optional equipment
1. Front support wheel
Kit no. 1136070
- Top link chain (2).
- Front support wheel (3).
The front support wheel enables improving ground
contour adaptation.
Gyrorake
GA300G
Adjustments
- Raise machine using tractor lift linkage so that wheels
are no longer in contact with the ground.
- Loosen counter nut (1).
- Loosen screw (2).
- Position wheel at the required height.
- Tighten screw (2).
- Tighten counter nut (1).
The adjustment is correct when :
- Tines slightly skim the ground.
- Tine arms are level.
Optional equipment
39
Page 42
Machine use
Working position
The top link must be floating.
- Replace upper link with chain (1). The chain is used
for lifting the machine on headlands.
- On the tractor side, insert top link pin (1) in the large
chain link (2).
- On the machine side, attach chain in slot (3) of the top
link plate.
- To adjust the chain length, move chain links in the slot
of plate (3).
In working position, loosen chain.
Gyrorake
GA300G
Transport position
Replace chain with tractor upper link.
40
Optional equipment
Page 43
2. Lights and indicators
Kit no. 1136290
The road safety equipment is mounted in the factory or
by your authorized Kuhn dealer according to current
safety regulations.
The front safety device comprises:
- 2 signalling panels (1).
- 2 front position indicating lights (2).
- 4 white reflectors (3).
Gyrorake
GA300G
The rear safety device comprises:
- 2 rear signalling panels (1).
- 4 red reflectors (3).
- 2 signalling lights (3) (red light / stop light / turn signal
light).
Optional equipment
41
Page 44
Before carrying out any maintenance or
repairs on the machine, switch off the trac tor
engine, remove ignition key, wait until all
moving parts have come to a standstill and
apply park brake.
Frequency chart
Gyrorake
GA300G
$Maintenance and storage
Lubrication
Greasing:
- Rotor gears
- Rotor arm housings
- Wheel supports
Oil:
- Pivot points
- The parking stand
Maintenance
- Tighten machine screws and nuts
After the first 10 hours of
use
33
Every 50 hours
3
3
3
3
3
42
Maintenance and storage
Page 45
Lubrication intervals are indicated for normal
conditions of use.
1. Lubrication
The pictorials show the points to be greased.
Clean grease nipples before greasing.
Lubricate with SHELL multi-purpose grease
grade NLGI 2.
Lubricate with SHELL SAE 90 EP (GL4) gear oil.
Gyrorake
GA300G
PTO shaft
Primary PTO shaft
- Every 8 hours:
• U-joints (1).
- Every 20 hours:
• transmission tube (2).
- Every 40 hours:
• guide rings (3).
• locking pins (4).
Rotor
The guiding cam is lubricated for life with SHELL
multi-purpose grease grade NLGI 2.
Maintenance and storage
43
Page 46
Lubricate the following parts:
Lubricate with SHELL multi-purpose grease
grade NLGI 2.
Grease:
- Rotor gears (1).
Gyrorake
GA300G
- Rotor arm housings (1).
In difficult or intensive work conditions,
reduce greasing intervals of rotor arm
housings.
Oil:
Lubricate with SHELL SAE 90 EP (GL4) gear oil.
- Pivot points (1).
- The leg (2).
44
Maintenance and storage
Page 47
2. Maintenance
Check thighteness of all bolts and nuts, particularly on
rotors.
Gyrorake
GA300G
3. Storage
At the end of each season
Avoid high pressure water jets on rotor a nd
pivot points.
- Clean the machine thoroughly.
- Put the machine under cover in a dry place.
- Clean and pack the connections between rotor arms
and removable tine arms with never-seiz e gr ea se .
- Check good sealing:
• Of the reduction gearbox.
At the start of each season
- Re-read the operators' manual.
- Check tyre pressure:
• Rotor wheels: 2 bar (29 psi).
- Make sure that all protection devices are in place and
in good condition.
Maintenance and storage
45
Page 48
$Trouble shooting guide
Problem Cause Remedy
Gyrorake
GA300G
Poor raking over the whole
rotor width
Poor raking on one side of the
rotor
Poor raking on the two sides Rotor tilted frontward
Poor raking in the middle Rotor tilted rearwards Shorten the top link
Crop pick up at the rear of the
rotor
Crop ejection at the front of the
swath screen
Crop ejection underneath the
swath screen
Torque limiter disengages
frequently
Unusual rotor vibrations Rotor speed too high
Tines too far from the ground Adjust wheel height
Rotor tilted towards the opposite
side
Swaths too compact between
tines and swath screen
Earth clods on tines Adjust wheel height
Rotor speed too high Reduce PTO speed
Incorrect swath screen position:
Too much at the rear
Incorrect swath screen position:
Too far away from the ground
Load on tine arms is too high
Adjust wheel height to obtain
same tine/soil distance on both
machine sides
Lengthen the top link
Or
Adjust wheel height
Increase swath screen distance
Move swath screen forwards
Reduce PTO speed
Move swath screen downwards
Adjust wheel height
Reduce ground speed
Check PTO speed
(540 min
-1
max.)
46
Trouble shooting guide
Page 49
$Appendix
1. Calculating the load on an axle
When coupling a tool to the front and rear 3-point lift linkage, the maximum authorized payload must
not be exceeded.
The load on the tractor front axle must always represent 20 % of the tractor unladen weight.
Prior to use, check that these conditions are satisfied by making this calculation or by weighing the
tractor-machine unit
Define the total weight, axle loads, tyre
capacity and minimum additional mass:
Gyrorake
GA300G
The following values are required for the calculation:
Description Units Description Obtained by
T kg Tractor unladen weight
T1 kg Unladen load on tractor front axle
T2 kg Empty load on tractor rear axle
t kg Axle loads (Tractor + machine)
t1 kg Load on front axle (Tractor + machine)
t2 kg Load on rear axle (Tractor + machine)
M1 kg Total weight of front tool or front ballast
M2 kg Total weight of rear tool or rear ballast
am
b m Distance between the tractor axles
cm
d m
-
Refer to the tractor operators' manual Refer to the machine price-list or operators' manual
Dimensions Measure on scale
Distance between the tools' centre of gravity or the front ballast and
the front axle centre
Distance between the rear axle center and the center of the lower link
ball joints
Distance between the centre of the lower link ball joints and the centre
of gravity of the rear tool or rear ballast
Appendix
47
Page 50
Rear tool or front-rear combination:
Gyrorake
GA300G
1) Calculation of the minimum front ballast weight M1
minimum
M2 x (c+d) - T1 x b + 0.2 x T x b
M1
minimum
=
a+b
Write the minimal additional weight in the chart.
Front tool:
2) Calculation of the minimum rear ballast weight M2
minimum
M1 x a - T2 x b + 0.45 x T x b
M2
minimum
=
b+c+d
Write the minimal additional weight in the chart.
3) Calculation of the actual load on the front ax le T1
If the front tool (M1) is lighter than the minimum load required at the front (minimum), increase tool weight until the required minimum
front load is reached
real
M1 x (a+b) + T1 x b - M2 x (c+d)
T1
=
real
b
Indicate front axle calculated load value and the one indicated in the tractor op erators' manual.
4) Calculation of the total weight M
If the rear tool (M2) is lighter than the minimum load required at the rear(minimum), increase tool weight until the required minimum
rear load is reached
real
M
= M1 + T + M2
real
Indicate calculated total load value and the o ne author ized as indicated in the tractor oper ator's manual.
5) Calculation of the actual rear axle load T2
T2
= M
real
real
real
- T1
real
Indicate rear axle calculated load value and the one indicated in the tractor operator's manual.
6) Tyre carrying capacity
Indicate double (2 tyres) the authorized load value (see tyre manufacturer indications).
48
Appendix
Page 51
Table:
Gyrorake
GA300G
Actual value obtained
by calculation
Minimum front/rear
ballasting
Total weight kg ≤ kg
Load on front axle kg ≤ kg ≤ kg
Load on rear axle kg ≤ kg ≤ kg
The minimum ballasting must be made by fitting a tool or an additional mass to the
tractor.
The values obtained must be below or equal the authorized values.
kg
Value authorized
according to
operator's manual
Double value of the
authorized capacity
per tyre (2 tyres)
Appendix
49
Page 52
Determining the machine weight (M2) and
the position of its centre of gravity (d)
If the data required to calculate the total
weight, axle loads and minimum ballasting
are not supplied, use the following method.
Tractor only:
Gyrorake
GA300G
- T1: Load on front axle.
• Tractor only.
- T2: Load on rear axle.
• Tractor only.
50
Appendix
Page 53
- T: Axle loads.
•Tractor only.
Gyrorake
GA300G
Appendix
51
Page 54
Gyrorake
Rear tool or front-rear combination:
If the total unit weight exceeds the tractor Gross Combined Weight Rating in accordance with th e
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 ta nks.
- Measure dimension (b).
- Measure dimension (c).
GA300G
- t1: Load on front axle.
• Tractor + machine.
• Hopper empty.
- t: Axle loads.
• Tractor + machine.
• Hopper empty.
Calculating the rear tool weight (M2):
M2 = T - t
Calculating the distance (d):
d = (( b x ( T1 - t1) ) / M2 ) - c
52
Appendix
Page 55
$Limited warranty
Gyrorake
GA300G
Limited warranty
53
Page 56
Gyrorake
GA300G
54
Limited warranty
Page 57
Page 58
Page 59
Page 60
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