KUHN GA 8001 H Assembly And Operators Manual
ASSEMBLY / OPERATOR'S MANUAL
GA 8001 H GYRORAKE
N° 95318 C.GB - 06.1999
DEAR OWNER,
In buying a KUHN machine you have chosen wisely. Into it have gone years of thought,
research and improvements. 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 by 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 dependant upon how well you
read and understand this manual and apply this knowledge. Please DO NOT ASSUME THAT
YOU KNOW HOW TO OPERATE AND MAINTAIN YOUR MACHINE before reading this
manual carefully. KEEP THIS MANUAL AVAILABLE FOR REFERENCE.
Your KUHN dealer will instruct you on the general operation of your machine. He is interested
that you get the best performance possible and will be glad to answer any special questions
that may arise regarding the operation of the KUHN machine.
Your KUHN dealer can offer a complete line of genuine KUHN service parts.
These parts are manufactured and carefully inspected in the same factory that builds the
machine to assure high quality and accurate fitting of any necessary replacements.
When ordering service parts it is important that you indicate the type of machine concerned
and its serial number.
For this reason please complete the model identification plate diagram below with the required
information. This will provide you with an easy reference for future service parts orders.
ABOUT IMPROVEMENTS
KUHN is continually striving to improve its products and, 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.
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CONTENTS
Safety 2
Safety decals 8
Technical specifications 11
Assembly instructions 12
Attachment : - Fitting to the tractor 28
- PTO transmission shaft 30
Work position and adjustments 32
Operation 34
Forward speed 34
Transport 36
Parking the machine 38
Lubrication 40
Optional accessories 42
Electrical connector (for North America) 44
Conditions of limited warranty 45
Copyright 1999 KUHN S.A.
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SAFETY
The above symbol is used throughout this manual every time recommendations are made concerning your
safety, the safety of others, or the good operation of the machine.
These recommendations must be made known to all machine operators.
DESIGNATED USE OF THE MACHINE
The GA 8001 H Gyrorake must only be used for the work for which it has been designed : raking on the ground
and forming swaths of pre-mowed fodder and straw.
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.
Designated use of the machine also means :
- following operation, maintenance and repair recommendations given by the manufacturer ;
- using only genuine spare parts, equipment and accessories as designated by the manufacturer.
The GA 8001 H Gyrorake must only be operated, maintained and repaired by competent persons who are familiar
with machine specifications and operation and are aware of any danger involved.
The operator must imperatively respect current legislation concerning :
- accident prevention,
- work safety,
- public traffic circulation.
All safety advice indicated on the machine must be strictly observed.
The manufacturer is not held liable for any damage resulting from machine modifications carried out by the
operator himself or by a third party without previous written agreement from the manufacturer.
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GENERAL SAFETY RECOMMENDATIONS
Before operating the machine, always ensure that tractor and machine are in accordance with work safety and
road traffic regulations.
BASIC PRINCIPLES
1. In addition to the recommendations given in this manual, legislation on work safety and accident prevention
must also be respected.
2. Advice is indicated on the machine, specifying safety recommendations in order to prevent accidents.
3. Before travelling on public roads, the operator must ensure that the machine conforms to road traffic
regulations.
4. Before starting work, the operator must be familiar with all machine controls, handling devices and their
functions. Once at work, it is too late to do this !
5. Do not wear loose clothing which could become caught up in moving elements.
6. Use a tractor equipped with a safety cab. Keep windows and roof hatch closed for reduced sound level while
operating the PTO drive implement.
7. Before starting up the machine and beginning work, check the surrounding area (beware of children !). Make
sure there is sufficient visibility.
Keep all people and animals away from the danger zone of the machine (risk of projection !)
8. Carrying people or animals on the machine when working or in transport is strictly forbidden.
9. Machine must only be attached to tractor using means provided and in accordance with current safety
standards.
10. When attaching or removing the machine, place the parking stand into the corresponding position.
11. Special care should be taken when attaching or removing the machine from the tractor.
12. Before attaching the machine, ensure that the front tractor axle is sufficiently ballasted.
Ballast is to be placed on the supports provided in accordance with instructions of the tractor manufacturer.
13. Do not exceed the maximum axle load or the overall transport weight as prescribed by the tractor
manufacturer.
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14. Do not exceed the maximum transport width authorized by road traffic regulations.
15. Before travelling on public roads, ensure that all legally required guards and indicators (lights, reflectors ...)
are in place and in good operation.
16. All operating controls (cords, cables, rods...) must be positioned so that they cannot be set off accidently,
risking accident or damage.
17. Before traveling on public roads, put the machine into its transport position as instructed in this operators
manual.
18. Never leave the tractor seat while the machine is operating.
19. Drive speed must be adapted to ground conditions as well as to roads and paths.
Always avoid abrupt changes of direction.
20. Precision steering, tractor adherence, road holding and efficient braking are influenced by the type of
implement, weight, ballast of front axle, ground or road conditions. It is therefore of utmost importance to
be cautious in every given situation.
21. Be particularly cautious when turning corners, paying attention to machine overhang, length, height and
weight.
22. Before operating the machine, ensure that all safety guards are firmly in place and in good condition. If worn
or damaged, replace immediately.
23. Before operating the machine, check the tightness of all nuts and bolts, particularly on fixing elements
(blades, tines, knives, spades ...)
24. Keep clear of the machine operating area.
25. WARNING ! Danger of crushing and shearing can exist when components are operated by hydraulic or
pneumatic controls.
26. Before leaving the tractor or before adjusting, maintaining or repairing the machine, turn off the engine,
remove the ignition key and wait until all moving parts have come to a complete stop.
27. Do not stand between the tractor and the machine unless the hand brake is tight and/or stops have been
placed under the wheels.
28. Before any adjustments, maintenance or repairs are carried out, ensure that the machine cannot be started
up accidentally.
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ATTACHMENT
1. When attaching or removing the machine from the tractor, make sure that it cannot move accidentally.
(Put wedges under the wheels).
2. When attaching the machine to the tractor hydraulic linkage, ensure that diameter of the link pins corresponds
to the diameter of the ball joints.
3. WARNING ! Danger of crushing and shearing can exist in the lifting zone of the tractor hydraulic linkage !
4. Do not stand between the tractor and the machine when operating the outer control lever of the lift mechanism.
5. Make sure that the weight applied to the tractor's draught arms does not go over the maximum weight
indicated by the manufacturer.
6. Make sure flexibility between tractor draught arms and machine drawbar is sufficient.
7. In transport, the tractor draught arms should be stabilized by the linkage to avoid stabilizer bars side to side
shifting.
8. Never operate or transport the machine on sloping or bumpy fields with a narrow wheel track tractor.
POWER TAKE-OFF
1. Use only the PTO shaft supplied with the machine or recommended by the manufacturer.
2. PTO guards must always be in place and in good condition.
3. Check for correct PTO overlap when at work and in transport.
4. Before attaching or removing the PTO shaft, disengage PTO shaft, turn off engine and remove ignition key.
5. If a primary PTO shaft is equipped with a slip clutch or a free wheel, these must be fitted on the machine PTO.
6. Ensure that PTO shaft is always correctly fitted and locked into place.
7. Make sure guards are correctly in place and secured with the safety chains provided.
8. Before engaging PTO, ensure that PTO speed (rotational frequency) and direction are in accordance with
manufacturers recommendations.
9. Before engaging PTO, keep all people and animals clear from the machine.
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10. Never engage PTO shaft when tractor engine is turned off.
11. Never surpass the PTO angle recommended by the manufacturer.
12. WARNING ! Rotating elements can continue turning momentarily after PTO is disengaged. Keep clear until
all rotating elements are at a standstill.
13. When removing the machine, place PTO shaft on the supports provided.
14. Fit the safety cap on tractor PTO.
15. Replace any worn or damaged PTO guards immediately.
HYDRAULIC SYSTEM
1. Beware ! The hydraulic circuit is under pressure (maximum working pressure : 200 bars/2900 psi).
2. When fitting hydraulic motors or cylinders, ensure that connections have been made correctly, as per
manufacturers instructions.
3. Before connecting hoses to the tractor hydraulics, ensure that tractor and machine circuits are not under
pressure.
4. It is strongly recommended that the operator marks the hydraulic connections between tractor and machine
to avoid making a wrong connection. WARNING ! Functions could be reversed (for example : lift/lower).
5. Regularly check the hydraulic hoses ! Replace the hydraulic hoses every 5 years. Damaged or worn hoses
must immediately be replaced .
When replacing the hydraulic hoses, make sure to use hoses with the specifications and quality recommended
by the manufacturer of the machine.
6. Should a leak be found, take all necessary precautions to avoid accidents.
7. 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.
8. Before any adjustments, maintenance or repairs are carried out, lower the machine, depressurize the circuit,
turn off the engine and remove ignition key.
Rotation speed ... rpm (American Measure) is also expressed in metric measure : Rotational frequency ... min
-1
.
Both units are equivalent, for example : Rotation speed 540 rpm equals Rotational frequency 540 min-1.
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TIRES
1. 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 wedges in place).
2. Assembly, disassembly and repair of wheels and tires must only be carried out by competent persons who
are equipped with standardized tools.
3. Check tire pressure regularly !
Respect manufacturers recommendations on tire pressure.
MAINTENANCE
1. Before checking for any machine malfunction and before adjusting, maintaining or repairing the machine,
disengage PTO, turn off engine and remove ignition key.
2. Check tightness of nuts and bolts regularly. Retighten if necessary.
3. If the machine is raised, prop it up in a stable position before carrying out any maintenance work.
4. When replacing a working part, wear protection gloves and only use standardized tools.
5. It is forbidden to discard any oil, grease or filters. These must be given to waste disposal organisations to
protect the environment.
6. Disconnect power source before any work is done to the electric system.
7. Check safety guards regularly, particularly those that are subject to wear. Replace immediately if damaged.
8. Spare parts used must be in accordance with specifications and standards as defined by the manufacturer.
Use only genuine KUHN parts !
9. Before any electric welding is carried out on tractor or attached machine, disconnect generator and battery
terminals.
10. Repairs on elements under pressure or tension (springs, accumulators etc...) must only be carried out by
competent persons with standardized equipment.
SPECIAL SAFETY RECOMMENDATIONS
1. When changing the machine over from the work to the transport position or vice versa, danger of crushing
and shearing can exist.
Be especially careful and keep all persons away from vicinity of the machine when maneuvering.
2. Maximum speed in kph allowed on roads 25 kph (15 mph).
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THE FOLLOWING SAFETY PICTORIALS HAVE BEEN PLACED ON YOUR MACHINE IN THE
AREAS INDICATED. THEY ARE INTENDED FOR YOUR PERSONAL SAFETY AND FOR THE
SAFETY OF THE PEOPLE WORKING WITH YOU. THE TEXT SHOWN ON THEM GIVES THEIR
PRECISE MEANING. ENSURE THAT THESE PICTORIALS ARE ALWAYS LEGIBLE. IF THEY ARE
NOT, REPLACE THEM.
SAFETY DECALS
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TECHNICAL SPECIFICATIONS
Technical Specifications GA 8001 H
Tractor attachment (category 2 and 3) Swivel hitch / lower links
Number of rotors
2
Number of tine arms / rotor 13
Working width max. 8.00 m (26' 3")
Transport width 3.00 m (9' 10")
Transport height with guards folded and
tine arms disconnected 4.00 m (13' 1")
Total length 6.80 m (22' 4")
Power requirement mini. 51.5 kW (70 hp)
PTO speed (rotational frequency) 540 rpm (min-1)
Drive :
- primary PTO shaft with constant velocity joints without torque limiter
- secondary hydraulic drive self contained unit with
pressure relief valve
Total weight 2980 kg (6556 lbs)
Tires / tire pressure :
- rotor undercarriage 18 x 8.5 - 8 (2 bars/29 psi)
- carrying frame 12.5 / 80 -18 (3 bars/45 psi)
Hydraulic outlet required 1 x double acting outlet
Electric connection required 1 x 7 pin plug
Special features : - The GA 8001 H is a machine conceived for large fields and has been designed to form one
central windrow of a set width.
- In transport position, the GA 8001 H guards are folded and the tine arms disconnected
which reduces considerably the height of the machine.
- The rear guide wheels of the GA 8001 H are angled from the pivoting head by means of
rods.
- The GA 8001 H is equipped with an hydraulic rotor drive. A pressure relief valve limits the
system's torque to a pre-set amount.
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ASSEMBLY INSTRUCTIONS
According to their destination, GA 8001 H units can be packed in crates, some parts or part units being
disassembled to facilitate their packing-up.
For reduced bulk, the main beam of the machine frame is not packed in a crate. To mount the various parts,
proceed as follows :
1. Unpacking
Carefully unpack all parts and spread them on the ground for easier identification.
The various hardware bags are numbered for easier identification. Make sure to use the hardware bag number
indicated in the various assembly sections.
2. Assembly of the rear undercarriage to the frame (figure 1 and photo 1 A)
- Place the frame (1) on trestles and remove the support (S) which can be stored away together with its mounting
hardware.
- Using a hoist, bring the rear undercarriage (2) close to the frame (1).
Assemble both parts together with the 20 self-locking screws (3) (M 16 x 35) and 20 self-locking nuts (4) (M
16) located in the hardware parcel marked «montage train arrière» 078 709 10. Torque : 28 daNm/ 200 ft.lbs.
3. Mounting of the front signalling panels (photo 2)
- Mount the pre-assembled front signalling panels (4) on each side of the headstock (5) using 4 hexagonal screws
(6) (M 10 x 60) and 4 self-locking nuts (M 10). The red corners must be directed towards the top and outer side
of the machine.
- Fit the 2 self-adhesive bases (7) on each panel support (4) and place 1 collar (10) in each base.
- Connect the terminals (8) of the wiring harness in terminals (9) of the front lights. The locking tab (19) of the
female connector (20) must be fully engaged over the peg (21) of the male connector (22) (see figure
A, page 15).
- Tighten the collars.
The necessary mounting hardware is located in the parcel marked «montage panneaux de signalisation avant»
078 707 00.
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2
1A
1
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5. Parking the machine (photo B)
- Pull on lock handle (23).
- Slide parking stand (24) until lock (23) automatically locates in place.
ATTENTION : Always double check lock (23) is engaged.
- Raise the frame using a hoist and remove the trestles.
- Lower the machine and park it on the ground.
4. Finishing of the rear undercarriage mounting (figure 3)
- Mount the pre-assembled mudguards (1) on the wheel arms (2) using 12 self-tapping screws (M 8 x 20) packed
in the mounting hardware marked «montage garde-boue» 078 714 00.
- Mount the wheels(3) on hubs (4) using 12 wheel nuts (5) (torque : 10 daNm / 75 ft.lbs).
- Place 6 self-sticking supports(6) with their clamp collars on the rear sub-frame. Pull the electric wire with the
white end (7) through the left crossbar (8) (seen in the direction of travel) and the electric wire with the black
end (9) through the right crossbar.
- Mount the pre-assembled rear signalling panel units (10) on the rear wheel frame (11) using 6 self-locking
screws (12) (M 10 x 25). The red corners must be pointing upwards and outwards.
- Mount the tine arm supports (13) and the cover plate (14) on the rear wheel frame (11) with 12 self-tapping
screws (15) (M 8 x 20), 12 plain washers (diameter 9 x 30 x 1,5), 4 self-locking screws (16) (M 10 x 25).
- 2 self-tapping nuts (15) (M 8 x 20) are used to fit the SMV support.
- Plug the 4 pin terminals into the rear lights (17). Note that the rear left light connector is marked "L" and
is identified by a white cable sheath (highlighted in grey on fig. A).
The locking tab (19) of the female connector (20) must be fully engaged over the peg (21) of
the male connector (22) (fig. A).The cable ends should be slightly slack. Tighten the collars starting with
the rear of the machine.
- Place the bushes (18) in the tine arm storage racks (13).
The necessary mounting hardware for the cover plate (14), the rear signalling panels (10), the electric wires (7
and 9) and the tine arm storage racks (13) are located in the parcel marked «montage des panneaux de
signalisation arrière» 078 708 10.
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