KUHN GF5202THA, GF7802THA Operator's Manual

OPERATOR'S MANUAL

Gyrotedder

GF5202THA

KN002DGB A

- English - 12-2006

Gyrotedder

GF5202THA

$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 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 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 GF5202THA gyrotedder must only be used for the purpose for which it was manufactured: spreading and
tedding previously cut forage or straw. It can also be used to form small windrows in order to limit the exposure
of crop to dew at night.

Dear Owner

1

Gyrotedder

GF5202THA

$CONTENTS

 Dear Owner.....................................................................................................................1

 Contents .........................................................................................................................2

 Identification of the machine ........................................................................................4

Front view (transport position)....................................................................................................... 4

Front view (working position)......................................................................................................... 4

Model identification plate................................................................................................................ 5

Safety ..............................................................................................................................6



Description of symbols used in this document ............................................................................ 6

Safety instructions........................................................................................................................... 7

Location and description of safety decals on the machine....................................................... 15

Road safety equipment and recommendations .......................................................................... 18

Machine specifications................................................................................................ 19



Description and glossary .............................................................................................................. 19

Technical specifications................................................................................................................ 20

Sound levels................................................................................................................................... 20

Putting into service...................................................................................................... 21



Description of control elements ................................................................................................... 21

Coupling and uncoupling.............................................................................................................. 21



Instructions for transport............................................................................................ 29

2

Putting the machine into transport position ............................................................................... 29

Conformity with the road regulations .......................................................................................... 30

Contents

Gyrotedder

GF5202THA

Instructions for work....................................................................................................31



Putting the machine into work position ...................................................................................... 31

Adjustments in working position .................................................................................................32

Machine use ................................................................................................................................... 33

Maintenance and storage ............................................................................................35



Frequency chart............................................................................................................................. 35

Lubrication ..................................................................................................................................... 36

Maintenance................................................................................................................................... 39

Storage ........................................................................................................................................... 42

Conditions générales de garantie...............................................................................44



Contents

3

$IDENTIFICATION OF THE MACHINE

1. Front view (transport position)

Gyrotedder

GF5202THA

2. Front view (working position)

4

Identification of the machine

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.

Gyrotedder

GF5202THA

Type: GF5202THA

No:

4. Optional equipment

 Kit no. 4800200: Wide angle PTO shaft.

Identification of the machine

5

$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.

Gyrotedder

GF5202THA

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

Gyrotedder

GF5202THA

2. Safety instructions

 Introduction

The machine must only be operated, maintained and repaired by competent persons who are familiar with
machine 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 accidents resulting 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 trained
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

7

 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-protectors,
etc.).

Make sure that all operating controls (ropes, cables,
rods, etc) are placed so that they cannot be set off
accidentally, risking accident or damage.

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.

Gyrotedder

GF5202THA

 Precautions when driving

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 the utmost importance to be cautious 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.

8

Safety



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 transports of oversize
equipment.

Gross weight and weight per axle

Check that the tractor's authorized gross weight as well
as its lift capacity and maximum weight per axle are not
surpassed.

The front axle load (1) must never, under any
circumstances, be less than 20% of the tractor's unladen
weight. If necessary, add ballast weights to the front or
to the rear to preserve the steering and braking
efficiency.

Gyrotedder

GF5202THA

Transport position

Before transporting the machine on public roads, place
the machine into its transport position, according to the
instructions in this manual.

Lightings and signallings.

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.

Always obey current regulations for driving
on roads

 Maximum speed

Always keep to the legal speed limit for driving a tractor­machine assembly on public roads.

Safety

9

 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 rear remote control lever of the three point
linkage.

Do not stand between the tractor and the machine
without ensuring that the parking brake is applied.

 Hydraulic circuit

Gyrotedder

GF5202THA

Beware! The hydraulic circuit is under pressure.
Maximum pressure at work: 200 bar.

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 wrong connections, mark hydraulic
couplers and corresponding hoses with colours.
WARNING! Functions could be reversed (for example:
lift/lower) and cause accidents.

Regularly check the hydraulic hoses. In case of normal
wear, 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.

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 on the ground,
depressurize the hydraulics, turn off the engine, remove
ignition key and wait until all moving parts have come to
a complete stop.

10

Safety



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 protection must be replaced
immediately.A worn guard or an unprotected 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 recommendations.

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.

Gyrotedder

GF5202THA

Safety

11

 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
manufacturer's 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).

Gyrotedder

GF5202THA

 Safety decals

Safety warning decals to respect, 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 neither pour them
down the drain or discard them in any other place where
they could pollute the environment. Never throw away or
burn a tire. Always take waste to specialized recycling or
waste disposal centers.

12

Safety



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 ground, 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-protectors,
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.

It is strongly recommended to have your machine
checked by your Kuhn dealer after each season,
especially tools and their attaching hardware (nuts, bolts
etc.).

Gyrotedder

GF5202THA

 Projection of stones and foreign objects

For driver safety, always use a tractor equipped with a
cab. Never start the machine 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.

Safety

13

 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 element.

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.

Keep a safe distance from the Gyrotedder when the
rotors are in movement.

Never work in reverse.

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.

Gyrotedder

GF5202THA

14

Safety

3. Location and description of safety decals on the machine

 Location of safety decals

Gyrotedder

GF5202THA

Safety

15

 Description of safety decals

Operating instructions (1)

The operator's 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.

Gyrotedder

GF5202THA

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 from the
machine.

16

Safety

Body crushing (5)

Stay a safe distance from the machine. Crushing hazard.

Stability when parking the machine (6)

Before uncoupling the machine, lower rear parking
stand.

Gyrotedder

GF5202THA

Safety

17

4. Road safety equipment and recommendations

The road safety equipment is mounted in the factory or
by your authorized dealer according to current safety
regulations. Always keep to the legal speed limit for
driving a tractor-machine assembly on public roads.
Whatever the speed, we recommend, for everyone's
safety, not to exceed a speed of 40 km/h (25 mph).

The front safety device comprises:

- 1 amber retroreflective tape (1).

Gyrotedder

GF5202THA

The rear safety device comprises:

- 1 support for a SMV emblem (Triangle not supplied)
(1)

- 2 red retroreflective tapes (2).

 Tyre pressure

- (1): 2,8 bar (40.8 psi)

18

Safety

$MACHINE SPECIFICATIONS

1. Description and glossary

0

Gyrotedder

GF5202THA

1 : Drawbar 2 : Hitch pin
3 : Front parking stand 4 : Front guards
5 : Outer guards 6 : Outer wing raising/lowering cylinder
7 : Pitch angle adjustment handle 8 : Outer wings
9 : Rear parking stand 10 : Central gearbox

11 : Drive shaft support 12 : Levelling cylinder

13 : Accumulator with membrane

Machine specifications

19

Gyrotedder

GF5202THA

2. Technical specifications

Attachment type Drawbar attached to the tractor pull bar

Number of rotors 4

Number of tine arms per rotor 7

Working width (DIN11220) 5.20 m (17’1’’)

Width in working position 6 m (19’8’’)

Length in working position 3.15 m (10’4’’)

Height in working position 1.4 m (4’7’’)

Width in transport position 2.99 m (9’10’’)

Length in transport position 3.10 m (10’2’’)

Height in transport position 2.80 m (9’2’’)

Minimum PTO power requirement 15 kW (20 hp)

PTO speed 540 min

Weight 530 kg (1170 lb)

Tyres 16/6.50-8

Tyre pressure

2.8 bar (40.8 psi) (Central rotors)

1.5 bar (21.8 psi) (Outer rotors)

-1

3. Sound levels

Sound levels have been measured in accordance with the measuring methods as defined in:

NF EN 1553

"Agricultural machinery - Self-propelled, mounted, semi-mounted and trailed - Common safety
recommendations"

Weighted equivalent continuous acoustic pressure level at the driver's seat (closed cabin) L (A) eq:

Tractor only: 78.7 dB(A)
Tractor + machine: 77.7 dB(A)

20

Machine specifications

$PUTTING INTO SERVICE

1. Description of control elements

The machine is equipped with:

- 1 cord which operates the outer wing release latch
and the drawbar 2 position valve,accessible from the
tractor cab.

- 2 hydraulic hoses of which 1 with a 2 position valve to
control the levelling cylinder and outer wing
raising/lowering cylinder.

Gyrotedder

GF5202THA

- 1 handle to adjust the pitch angle (1).

2. Coupling and uncoupling

 Preparing the tractor

The machine adapts to tractors fitted with a pull bar.

The tractor nominal PTO speed must be 540 min

The tractor must be equipped with :

- 1 double acting hydraulic outlet.

-1

.

Putting into service

21

Never couple or uncouple the machine
without having lowered and locked the rear
parking stand.

 Preparing the machine

Adjust drawbar height using the parking stand crank
handle according to the height of the pull bar.

Gyrotedder

GF5202THA

 Coupling the machine

Couple machine to tractor and secure hitch pin..

Safety chain

The machine is supplied with a ANSI/ASAE safety chain
type with a minimum ultimate system strength of
45 kN (10100 lbf).

The safety chain is intended to keep the
machine under control in the event of a loss
or failure of the hitch pin..

The safety chain must be tied around a tractor
attachment point other than the attachment bar.

Place release cord handle in the tractor cab.

22

Putting into service

Retract parking stands

Front parking stand:

Position parking stand horizontally.

Lock parking stand using specific pin. (Pin with
automatic locking mechanism).

Gyrotedder

GF5202THA

Rear parking stand:

Remove R-clip and lift parking stand.

Secure using R-clip.

Putting into service

23

 Hydraulic connection

The machine uses a double acting hydraulic valve.

Connect hydraulic hoses (1) and (2) to a double acting
outlet.

Position a: Circuit open.

Position b: Circuit closed.

Gyrotedder

GF5202THA

24

Putting into service



PTO shaft

Gyrotedder

GF5202THA

Make sure that the PTO shaft is correctly
adjusted, to avoid premature wear and tear.

The tractor PTO stub must rotate at a speed of 540 min

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
work 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:

• Mark length (H) to cut when the transmission is the

maximum overlap position

• Shorten the guard tubes and the transmission tubes

by the same length.

• Bevel and clean the tubes.

• Grease the inside of the outer tube.

-1

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

25

To avoid serious accidents, the PTO drive
shaft guards must be properly in place and
fixed with the chains provided.

On machine side, hook drive guard chain to ring (1).

Immediately replace any worn or damaged
guard.

Gyrotedder

GF5202THA

Lower PTO shaft support (1).

26

Putting into service



Uncoupling the machine

Park the machine on an even fairly level
ground.

From the transport position:

- Open hydraulic hose valve.

- Operate tractor hydraulic valve to tilt machine
frontwards.

- When cylinder (1) bottoms, shift tractor hydraulic
valve back to neutral.

Gyrotedder

GF5202THA

- The machine is fitted with front and rear parking
stands.

- Rear parking stand positioning:

• Remove R-clip.

• Fully lower parking stand.

• Secure using R-clip.

- Front parking stand positioning:

• Place parking stand in vertical position (a).

• Lock parking stand using specific pin (b).

• Adjust parking stand height using crank handle.

Putting into service

27

- Remove and store safety chain on the drawbar.

- Uncouple and place PTO shaft in support (1).

- Disconnect and store hydraulic hoses on holder (1).

- Remove cord from tractor and store it in its holder on
the machine.

- Remove hitch pin.

- Move forward with the tractor.

Gyrotedder

GF5202THA

The machine is uncoupled.

The machine must be parked in working
position if ground is not level.

28

Putting into service

$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
pivoting area.

- If there is someone, make sure the
person moves away.

Gyrotedder

GF5202THA

1. Putting the machine into transport position

From the working position:

- Shift the tractor hydraulic valve:

• The machine tips backwards (a).

- Pull release cord until transport lock pins are released:

• The wings will lift further than headland turn
position.

- Release cord:

• The outer wings fold until automatically locked (b).

• Shut-off hydraulic valve.

Position a: Circuit open.

Position b: Circuit closed.

The machine is in transport position.

Never engage the tractor PTO drive when the
machine is in transport position.

Instructions for transport

29

2. Conformity with the road regulations

Before driving the machine on public roads,
ensure that the machine meets current
highway code regulations.

Never tow the machine at a speed exceeding
40 km/h (25 mph).

Check that reflectors are clean.

Insert SMV emblem in its support (Triangle not supplied)
(1).

Gyrotedder

GF5202THA

Make sure that transport lock (2) is fully
engaged.

Regularly check the tyre pressure.

Make sure the release cord cannot be
operated inadvertently.

30

Instructions for transport

$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

Gyrotedder

GF5202THA

From the transport position:

- Open hydraulic hose valve.

- Operate transport/work position cylinder in work
position direction to free transport locks.

- Pull release cord until stop pins are released.

- Operate transport/work cylinders in the work position
direction until cylinders reach travel end:

• The outer wings unfold until they come into contact

with the ground (a).

• The machine tilts frontwards (b).

• Release cord.

If equipped, shift tractor valve in the detented
float position.

The machine is in working position.

Instructions for work

31

2. Adjustments in working position

Before adjusting, maintaining or repairing
the machine, turn off ignition key and wait
until all moving parts have come to a
complete stop.

Adjust machine pitch angle with handle (1) so that the
tines are at a distance D = 10 mm (0.4’’) from the
ground.

Gyrotedder

GF5202THA

The distance between tines and soil is a very
important factor with regards to the machine
work quality and tine service life.

32

Instructions for work

3. Machine use

 Groundspeed

The following factors determine the forward speed:

- The humidity level (This factor is particularly
determining when wilting).

- The crop density.

- The crop composition (blade length).

- The ground contours.

General advice:

In dense and average length crop:

- When wilting a crop with low humidity level.

• the speed is approximately of 7 to 8 km/h (4.4 -

5mph).

- When tedding a more or less dry crop.

• the speed is approximately of 10 to 12 km/h (6.3 -

7.5 mph).

Gyrotedder

GF5202THA

• The dryer the crop, the more the PTO speed must

be reduced.

• For a very dense, humid crop composed of very

long blades, the forward speed must be reduced.

For difficult working conditions, it is
recommended to operate at a lower forward
speed.

Instructions for work

33

$OPTIONAL EQUIPMENT

1. Wide angle PTO shaft

Part no. 4800200

Never operate the PTO shaft at an angle X exceeding
80°.

Gyrotedder

GF5202THA



Lubrication

Lubricate the central disc of each universal
joint with PTO shaft positioned so that it is
straight.

- Every 8 hours:

• The central discs (1).

- Every 20 hours:

• transmission tube (2).

- Every 40 hours:

• guide rings (3).

• Guard guides (4).

34

Optional equipment

1. Frequency chart

Gyrotedder

GF5202THA

$MAINTENANCE AND STORAGE

Lubrication

Grease:

- The outer wing pivot pins

- The <DIGIDRIVE> coupling fingers

- The pitch angle adjustment handle and its
pivot pin

Oil:

- The outer arm hydraulic cylinder pins

Maintenance

Check:

- Tightness of all bolts and nuts

After the first

10 hours of

use

Once per week

Every 200

hours or at the

end of the

season

3

3

33

Maintenance and storage

35

2. Lubrication

Before carrying out any maintenance or
repairs on the machine, switch off the tractor
engine, remove ignition key, wait until all
moving parts have come to a standstill and
apply park brake.

Check that hydraulic hose valves are shut­off.

The pictorials show the points to be greased (Part
no. 09905400).

Clean grease nipples before greasing.

Gyrotedder

GF5202THA

Lubricate with SHELL multi-purpose grease
grade NLGI 2.

 PTO shaft

- Every 8 hours:

• U-joints (1).

- Every 20 hours:

• transmission tube (2).

- Every 40 hours:

• guide rings (3).

36

Maintenance and storage



Grease

The outer wing pivot pins.

The <DIGIDRIVE> coupling fingers.

Gyrotedder

GF5202THA

The pitch angle adjustment handle and its pivot pin.

Maintenance and storage

37

 Oil

Lubricate with SHELL multipurpose SAE 90 gear
oil.

The outer arm hydraulic cylinder pins.

Gyrotedder

GF5202THA

38

Maintenance and storage

3. Maintenance

 Central gearbox

The main gearbox is lubricated for life and does not
require regular maintenance.

The main gearbox is lubricated for life with 1kg
(2.2 lb) of SHELL multi-purpose semi-fluid
grease grade NLGI 2

Gyrotedder

GF5202THA

 Checking the fixing elements

Check that all nuts and bolts are sufficiently tightened.

Maintenance and storage

39

 Replacing a tine

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.

2 types of tines are fitted on the machine:

- Tines (1) for rotors rotating clockwise
(a).

- Tines (2) for rotors rotating
counterclockwise (b).

Check that the tines are fitted properly with
regards to the rotor direction of rotation.

Gyrotedder

GF5202THA

From the working position:

- Remove attachment screw (1).

Respect mounting instructions so that the crop's
pressure (a) closes the coils.

- Replace tine.

40

Maintenance and storage

Check attachment bolt, washer and nut. Replace
if necessary.

- Reassemble the unit.

Check that the tine is properly embedded in
the tine arm.

- Tighten attachment screw:

• Torque: 20 daN m (148 lbf ft).

Gyrotedder

GF5202THA

 Tyre pressure

- (1): 2.8 bar (40.6 psi)

- (2): 1.5 bar (21.8 psi)

Maintenance and storage

41

4. Storage

 At the end of each season:

- Clean the machine thoroughly.

- Fully grease the machine.

- Check tyre pressure:

• 2.8 bar (40.6 psi) (Central rotors).

• 1.5 bar (21.8 psi) (Outer rotors).

- Touch up paint if necessary.

- Check and replace worn or damaged tines.

- Put the machine under cover in a dry place.

- Store machine in transport position with the two
parking stands on the ground and locked.

 At the start of each season:

Gyrotedder

GF5202THA

- Read through the operator's manual again.

- Check tyre pressure:

• 2.8 bar (40.6 psi) (Central rotors).

• 1.5 bar (21.8 psi) (Outer rotors).

- Check and replace worn or damaged tines.

- Check that all nuts and bolts are sufficiently tightened.

- Make sure that all protection devices are in place and
good condition.

- Lubricate outer arm hydraulic cylinder pivot pins.

42

Maintenance and storage

$LIMITED WARRANTY

Gyrotedder

GF5202THA

Limited warranty

43

Gyrotedder

GF5202THA

44

Limited warranty