KUHN GF 5001 MHA User manual

ASSEMBLY / OPERATOR'S MANUAL
GF 5001 MHA - GYROTEDDER
PLEASE READ CAREFULLY
BEFORE USING THE MACHINE
N° 95205 B.GB - 05.1999

DEAR OWNER,
In buying a KUHN machine you have chosen wisely. Into it have gone years o thought,
research and improvements. You will ind, as have thousands o owners all over the world, that
you have the best that engineering skill and actual ield testing can produce. You have
purchased a dependable machine, but only by proper care and operation can you expect to
receive the per ormance and long service built into it.
This manual contains all the necessary in ormation or you to receive ull e iciency rom your
machine. The per ormance you get rom 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 be ore reading this
manual care ully. KEEP THIS MANUAL AVAILABLE FOR REFERENCE.
Your KUHN dealer will instruct you on the general operation o your machine. He is interested
that you get the best per ormance possible and will be glad to answer any special questions
that may arise regarding the operation o the KUHN machine.
Your KUHN dealer can o er a complete line o genuine KUHN service parts.
These parts are manu actured and care ully inspected in the same actory that builds the
machine to assure high quality and accurate itting o any necessary replacements.
When ordering service parts it is important that you indicate the type o machine concerned
and its serial number.
For this reason please complete the model identi ication plate diagram below with the required
in ormation. This will provide you with an easy re erence or uture service parts orders.
ABOUT IMPROVEMENTS
KUHN is continually striving to improve its products and, there ore, 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
Page
Safety 2
Safety decals 9
Technical specifications 11
Assembly instructions 12
Attachment : - to the tractor 17
- PTO shaft 18
orking position and adjustments 19
Operating speed 21
Transport position 22
Parking the machine 23
Lubrication 24
Optional accessories 25
Conditions of limited warranty 28
Copyright 1999 KUHN S.A.

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SAFETY ADVICE
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 GF 5001 MHA Gyrotedder must only be used for the work for which it has been designed : spreading and
turning straw and pre-mowed fodder. hen fitted with a reduction gearbox, the machine can also be used for
forming small night swath in order to reduce the amount of humidity getting into the crop over night.
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 GF 5001 MHA Gyrotedder 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 recomendations 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. hen travelling on public roads, the operator must respect all 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 so!
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 driven 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. hen 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 surpass the maximum axle load or the overall transport weight as prescribed by the manufacturer.
14. Do not exceed the maximum transport width authorized by road traffic regulations.
15. Before transporting the machine on public roads, ensure that all legally required guards and indicators (lights,
reflectors ...) are in place and in good operation.

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16. All operating controls (cords, cables, rods...) must be positioned so that they cannot be set off accidentally,
risking accident or damage.
17. Before traveling on public roads, put the machine into its transport position as instructed in this operators
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. ARNING ! 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.
ATTACHMENT
1. hen attaching or removing the machine from the tractor, position hydraulic lift control lever in such a way
that it cannot be set off accidentally.
2. hen attaching the machine to the tractor 3-point linkage, ensure that diameter of the link pins corresponds
to the diameter of the ball joints.
3. ARNING ! Danger of crushing and shearing can exist in the lifting zone of the 3-point linkage !
4. Do not stand between the tractor and the machine when operating the outer control lever of the lift mechanism.
5. In transport, the machine lift mechanism should be stabilized by tractor tie rods to avoid floatation and side
shifting.
6. hen transporting the machine in the raised position, lock the lift control lever in place.

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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 of rotation are in
accordance with manufacturer's recommendations.
9. Before engaging PTO, keep all people and animals clear from the machine.
10. Never engage PTO shaft when tractor motor is turned off.
11. Never surpass the PTO angle recommended by the manufacturer.
12. ARNING ! Rotating elements can continue turning momentarily after PTO is disengaged. Keep clear until
all rotating elements are at a standstill.
13. hen 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.
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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HYDRAULIC SYSTEM
1. Beware ! The hydraulic circuit is under pressure (maximum working pressure : 200 bars/2900 psi).
2. hen fitting hydraulic motors or cylinders, ensure that connections have been made correctly, as per
manufacturers 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. ARNING ! 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 .
hen 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.
TIRES
1. Before any adjustments, maintenance or repairs are carried out, 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 manufacturers recommendations on tire pressure.

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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. hen 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 organizations 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.

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SPECIAL SAFETY RECOMMENDATIONS
hen 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.

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SAFETY DECALS
THE FOLLO ING 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 ORKING ITH YOU. THE TEXT SHO N ON THEM GIVES THEIR
PRECISE MEANING. ENSURE THAT THESE PICTORIALS ARE AL AYS LEGIBLE. IF THEY ARE
NOT, REPLACE THEM.

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TECHNICAL SPECIFICATIONS
Number of rotors 4
orking width (Din. 11220) 5.00 m / 16' 7"
idth in working position 5.43 m / 17' 9"
Transport width 2.84 m / 9' 2"
Length in transport position 2.31 m / 7' 7"
Length in working position 2,31 m / 7' 7"
Power requirement 15 k / 20 hp
eight with PTO 545 kg / 1200 lbs
Tyres 15 x 6.00 - 6
Tyre pressure 2 bars / 29 psi

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ASSEMBLY INSTRUCTIONS
1) Frame assem ly (photos 1 and 1 A)
Fix box type frame (P) onto crossbar (T) with 4 bolts
(D) (M 12 x 100 and self -locking nut M 12), 1 bolt (D')
(M 12 x 110 and self-locking nut M 12) and onto the
central gearbox (J) with 6 screws (K) (M 12 x 35).
Torque hardware to 12 daNm/72 ft.lbs.
NOTE : Do not forget to insert support (L) between
box type frame (P) and self-locking nut (M
12) when installing bolt (D) (photo 1A).
Next attach hydraulic hoses (R & S) to T union (U)
and hydraulic cylinders (V) (photo 1 A).
Install bolt (Z) and tighten locknut (Y).
Connect wire rope (Q), which automatically locks and
unlocks pendulum arm, to plate (R) with rope grip ( )
as shown in photo 1. Adjust wire rope length so that it
is slightly tensioned when the outside rotors are lifted
into transport position. Cut off surplus rope.
2) Fitting the 3-point frame (fig 2)
Attach the 3-point frame (C) to the box type frame
(P) by means of the vertical pivot pin (A) and secure
in place with roll pins (E) (5 x 50 mm) and (E) (8
x 50 mm) as shown in figure 2. Then attach the
pendulum arm (B) to the 3-point frame (C) by means
of the horizontal pivot pin (F).Secure the horizontal
pin (F) with roll pins (G) (8 x 50 mm). The roller (H
) must locate in housing (I).
3) Fitting the stand (photo 3)
Slide parking stand (M) in housing (N) and fit roll pin
(P) (dia. 7 x 45). Lock the parking stand in the lowered
position with R-clip (O) and install PVC cord (Q) as
shown in photo 3.
1

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4) Fitting reflectors (fig. 4)
Attach reflector support (1) to central tubing (2) on
each side of the machine by means of 2 hexagon
screws (3) (M 12 x 35) as shown in fig. 4. Next stick
red reflectors (5) and white reflectors (6) to the end
of supports (1).
5) Fitting frame shield (photo 5)
Attach frame shield (T) to reflector supports (1) using
4 hexagon screws (V) (M 8 x 20), 4 plain washers
(diameter 9 x 18 x 1,5) and 4 self-locking nuts (M 8).
Also attach to box type frame (P) using 1 hexagon
screw ( ) (M 8 x 12) and 1 lock washer (M 8).
6) Fitting the wheels (photo 6)
Fit the pre-assembled wheels (G) into their holders
(F). Place a shim washer (I) (dia. 35 x 45 x 2.5) on top
of the holder. Then install shim washer (K) (dia. 35 x
50 x 1). Secure in place with retaining ring (H). To
complete the job install protective caps (J).

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7) Fitting tine arms and tines
Before fitting tine arms and tines fold the intermediate and the outer rotors in working
osition.
Fit the tine arms as shown in figure 7.
1 = self-locking screw M 12 x 30 2 = self-locking nut M 12 (tighten to a torque of 12 daNm (88 ft.lbs).
Fit the tines (F) on the tine arms (B) in such a way that the pressure from the tines closes the spiral (the tines
are facing in the direction of rotation of the rotors) (fig. 8).
Position the deflectors (D). Fit the screws (A), position washers (C), then tighten the self-locking nuts (E)
(fig. 8) to a torque of 16 daNm (120 ft.lbs).
During the first few hours of work, make frequent checks of tine nut and bolt tightness. If necessary,
retighten to 16 daNm (120 ft.lbs) to avoid the possibility of loss or breakage.

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8) Fitting control cords (photo 9)
Cut one of the cords (D 1) to 1,7 m (5' 7"). Thread it through plate (P) as shown in drawing below.
Thread each end of the cord through lock arm (V) and tie a knot at each end. Insert the other cord (D 2) through
the upper hole of support plate (C) then through plate (P) and tie a knot.
Thread the other end of cord through handle (A) and tie a knot at desired length so that locks can easily be
maneuvered from the tractor seat. Cut off surplus cord at the knot and fit plug into handle (A).
To avoid that cords are too lax above the machine, tie a knot (N) in the cord just before support plate (C).
Then install the hydraulic coupler holder (H) on cover (S) (photo 9).

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9) Fitting the safety guards (photos 10 and 10 A)
The safety guards are provided with the machine to give improved protection against possible accidents and
therefore ensure maximum safety.
Attach the support (7) of the central safety guard under the box type frame (8) with 2 hexagon bolts (9) (M 10
x 30), 2 serrated washers (M 10) and 2 nuts (M 10) as shown in figure 10. Ensure that safety guard mounting
studs are positioned at the front of this support. Tighten hexagon bolts to 5 daNm / 37 ft.lbs.
Push both guards (6) onto support (7) and secure them with 4 hexagon bolts (12) (M 8 x 45) and nuts (M 8) (photo
10). Torque to 3 daNm / 20 ft.lbs.
Side guards (5) are fitted to outside housings (11) using 2 hexagonal head bolts (1) (M 12 x 60) and 2 serrated
washers (M 12) (photo 10 A).
Tighten hexagon bolts to 9 daNm / 65 ft.lbs.
Install plugs (3) and (4) (photos 10 and 10 A).

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ATTACHMENT
FITTING TO THE TRACTOR
The GF 5001 MHA can be fitted to all tractors equipped with a DIN or ASEA Standard 3-point linkage. The
lower link pins are 22 mm and 28 mm diameter for tractors with Cat. I and II linkage. The lower link pins should
be attached to the tractor link arms (P) inside the 3-point frame for Cat. I tractors and on the outside for Cat. II
tractors. In the latter case, use the 25 mm diameter link pins to attach tractor top link (Q) to the pendulum arm
(A) (photo 11).
The pendulum arm has three attachment positions to suit varying tractor top link lengths.
Connect hydraulic hose (E) to a female hydraulic connection at the rear of the tractor (photo 11).
hen the machine is attached to the tractor, raise stand (D) and secure with spring cotter (O) (photos 11 & 12).
hen connecting hydraulic hose (E) to tractor, ensure hose is placed above central guard (S)
(photos 11 and 12).

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PTO SHAFT
Connect the PTO shaft to the 540 r m (min-1) tractor drive (with the safety clutch fitted on the machine side)
(photo 11).
Make sure PTO length is correct :
1) hen the PTO is in its maximum extended position, a minimum tube overlap of 300 mm (12") must be
maintained.
2) hen the PTO is in its maximum overlap position (retracted), tubes should not butt against the yokes. As a
safety measure a clearance of at least 2 cm (0.8") must be maintained. If this is not the case, shorten the two
transmission tubes and the two guard tubes by the same length (fig. 13 and 14). Bevel and clean the tubes
(fig. 15) and grease the inside of the outer tube (fig. 16).
3) Never operate the PTO at too great an angle (30° maximum).
These recommendations and adjustments must be res ected to avoid damage or remature
wear of the PTO.
Never connect the PTO to the 1000 r m (min-1) tractor drive.
To avoid accidents which could be serious, make sure that the guards are always correctly
in lace and secured with the safety chain ( hoto 11). Worn or damaged guards must be
re laced immediately.