Tatu Marchesan GNL User manual

OPERATOR’S
MANUAL
GNLGNL

Dealer:
Owner:
Firm / Farm:
City: State:
No. of the Certificate of Guarantee:
Serial / No.:
Date: Invoice No.:
Product:
Notes:
IDENTIFICATION

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GNL - Rev. 07 - Mar/22
Introduction
This operator's manual helps on the assembly process and
provides the necessary information for the correct operation
and maintenance, thus assuring a higher yield, safety and
durability. This manual contains the necessary information for
the best performance of your equipment. The operator and the
maintenance staff must carefully read the entire manual before
working with the equipment. They must also read and understand
the safety recommendations.
For any further explanation or in the case of technical
problems that may arise during the service, consult your dealer
and the Technical support department of the factory, as they can
ensure the fully functioning of your TATU equipment.
We reiterate that a careful read and an observation of every
item on this manual are needed to assure a greater lifetime of
your equipment.
MARCHESAN IMPLEMENTOS E MÁQUINAS AGRÍCOLAS "TATU" S.A.MARCHESAN IMPLEMENTOS E MÁQUINAS AGRÍCOLAS "TATU" S.A.
Marchesan Av., 1979 - Zip Code 15994-900 - Matão - SP - Brazil
Telephone [phone]
www.marchesan.com.br

2GNL - Rev. 07 - Mar/22
Table of contents
1. To the owner 3
2. To the operator 4 to 13
3. Data sheet 14 to 17
4. Components 18 to 21
5. Assembly 22 to 35
Using the set of wrenches 22
Assembly of bearings and spacer spools 23 to 25
Disc gangs assembly sequence 26 & 27
Disc gangs assembly sequence with friction bearing 28
Assembly of the disc gangs on the frame 29
Frames junction / Scrapers assembly 30
Opening adjustment set assembly 31
Hydraulic cylinder assembly 32
Traction set assembly 33
Transport bar assembly 34
Hydraulic circuit 35
6. Set-up instructions 36 to 38
Preparing the tractor / Preparing the equipment 36
Hitching to the tractor - hydraulic circuit / Hitching to the tractor 37
Procedures to transport the equipment / Important recommendations 38
7. Adjustments and operations 39 to 44
Cutting depth 39 & 40
Scrapers adjustment 40
Ways to start the harrowing 41
Direction of the maneuvers 42
Operations - important points 43 & 44
8. Maintenance 45 to 54
Lubrication / Lubrication points 45 to 48
Hydraulic cylinder maintenance / assembly 49 & 50
Hydraulic safety 51
Troubleshooting guide 52 & 53
Disk harrow maintenance 54
9. Important data 55 to 57
Hourly income calculation 55
Average income table 56
Torque table 57
10. Important 58

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GNL - Rev. 07 - Mar/22
1. To the owner
General information
- The warranty shall not be applied to any equipment or any part that has been altered
elsewhere than at the place of manufacture, or which the original purchaser thereof
at retail has used or allowed to be used parts, not made or supplied by Marchesan.
NOTE
The acquisition of any Tatu product assures to the original purchaser the following rights:
- Warranty certificate;
- Operator's manual;
- Technical assistance by the dealer on equipment delivery.
However, the owner must check the condition of the equipment on delivery, as well as
knowing the warranty terms.
Special attention should be given to the safety recommendations, operation precautions
and maintenance of the equipment.
The instructions in this manual indicates how to get the best performance and allow
the operator to get maximum income, increasing the equipment lifetime.
This manual should be read by operators and maintenance staff.
IMPORTANT!
- Only people who own a full knowledge of the tractor and equipment must transport,
operate and carry out any maintenance on them;
- Marchesan is not responsible for any damage caused by accident on transporting,
misuse or inadequate storage, either by negligence and/or lack of experience from
any person;
- Marchesan is not responsible for any damage caused by unpredictable situations
or for the incorrect use of the equipment.
Right and left hand side indications are made observing the equipment from the rear.
To order any parts or request technical assistance services, it is required to provide
the data contained on the nameplate, which is located on the equipment's frame.

4GNL - Rev. 07 - Mar/22
2. To the operator
Working safely
Be careful with the environment
Read and understand the information before making any
adjustment or maintenance.
Follow every recommendation, warning and safety practice
that can be found inside this manual, as any accident may lead
to injuries or death.
REMEMBER, ACCIDENTS MUST BE AVOIDED!REMEMBER, ACCIDENTS MUST BE AVOIDED!
ATTENTION!
- This symbol is a warning used to prevent accidents.
- The instructions under this symbol refers to the safety of the operator, mechanician
or third parties, therefore they should be carefully read and observed. If the safety
instructions are not being followed, a serious accident or even death may occur.
Dear operator!
Respect the ecology. Do not throw trash away. This gesture of
goodwill helps to protect our environment.
Products such as oil, fuel, filters, batteries and others are spilt over
the soil and can penetrate to the underground layers, compromising
nature. Ecological and conscious disposal of them should be done.
This equipment is simple to operate, requiring however the basic and essential cautions
to its handling.
Always keep in mind that safety requires constant attention, observation and prudence
during work, transportation, maintenance and storage. The security aspects must be
carefully observed to avoid accidents.

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2. To the operator
Working safely
Never use your bare hands to check hydraulic leaks, the high pressure
can cause injuries.
Never attempt to change the adjustments, clean or lubricate the
equipment when the same is switched on or in movement.
Be careful while driving on slopes. Risk of overturn.
Prevent that chemical products (i.e.: fertilizers and treated seeds)
make any contact with your skin or clothes.
Keep access and work places clean or free from oil and grease. Risk
of accidents.
Never transport the equipment on highways or paved roads. Avoid
that the tractor wheels touch the drawbar in sharp turns.
Always use the safety locks to carry out any maintenance or to
transport the equipment.

6GNL - Rev. 07 - Mar/22
2. To the operator
Keep away from the moving elements of your equipment, as they may
be sharp and cause accidents. Always use protective gloves.
Working safely
Every professional should be oriented when lifting and carrying heavy
loads to avoid any serious accident that a bad execution of this process
may cause..
Have extreme caution when operating with the power take-off (PTO),
which you should not get closer during operation.
The presence of any other people on the tractor or equipment is stricly
forbidden.
Have extreme caution when driving under electrical power lines. Any
contact may result in severe shocks, injuries or death.
When hitching the equipment to the tractor, use a chain to lock
the equipment drawbar to the tractor hitch bar. This procedure will
prevent a possible rupture of any hydraulic hose or breaks on the
hitching system, what would make the equipment tilt up.

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GNL - Rev. 07 - Mar/22
2. To the operator
Personal protective equipment (PPE)
The personal protective equipment must be used as stated by the Ministry of LaborThe personal protective equipment must be used as stated by the Ministry of Labor
and Employment on the working standards.and Employment on the working standards.
Personal clothing must be used. Avoid tight or hanging clothes thatPersonal clothing must be used. Avoid tight or hanging clothes that
may become entangled to the moving parts of the equipmentmay become entangled to the moving parts of the equipment.
Use earplugs or muffs to avoid loud noises that may lead toUse earplugs or muffs to avoid loud noises that may lead to
complications or hearing loss.complications or hearing loss.
The foot protection will prevent damages from the impact of objects,
nails or bolts scattered on the floor, crushing hazards, injuries from
falling on slippery or wet areas and so on. Always use foot protecion
during the job.
Use gloves to protect your hands and arms from the abrasiveUse gloves to protect your hands and arms from the abrasive
elements (that may cause cuts or scratches). Whenever assemblingelements (that may cause cuts or scratches). Whenever assembling
or disassembling the equipment, use safety gloves.or disassembling the equipment, use safety gloves.
The safety glasses protect the eyes from any type of debris that wouldThe safety glasses protect the eyes from any type of debris that would
cause irritation or injuries.cause irritation or injuries.
Use the respiratory protection to filter the air and avoid that any dirtUse the respiratory protection to filter the air and avoid that any dirt
particles or material debris may be inhaled by the worker, what wouldparticles or material debris may be inhaled by the worker, what would
compromise its respiratory system.compromise its respiratory system.
The safety helmet protect the worker's head from any injury that wouldThe safety helmet protect the worker's head from any injury that would
be caused by falling objects.be caused by falling objects.
- Only certied PPE must be used.
NOTE
- Safety must be present on every working step to avoid accidents, such as the
impact of objects, falling, noises, cuts and similar. Therefore, the working person is
subject to inner and outer damages to the body.
ATTENTION!

8GNL - Rev. 07 - Mar/22
2. To the operator
1. Only trained and qualified personnel are allowed to operate the equipment.
2. While working or during transportation, only the presence of the operator is
allowed on the tractor.
3. Do not allow any passengers on the equipment.
4. Do not allow children to play or to get over the equipment while it is operating,
during transportation or storage.
5. When setting the equipment to transport position, check if there are no
people or animals close or under it.
6. Use personal protective equipment (PPE).
7. Wear appropriate clothes and footwear. Avoid tight or hanging clothes thatAvoid tight or hanging clothes that
may become entangled to the moving parts of the equipmentmay become entangled to the moving parts of the equipment.
8. Never operate the equipment without its protective devices.
9. Have full knowledge of the soil before starting to work. Use the speed
which is suitable to the conditions of the ground or pathways to be covered.
Provide the delineation of obstacles or hazardous locations.
10.Carefully check the transport width on narrow locations.
11.Be careful while hitching the equipment to the tractor.
12.Only pull the equipment using a tractor with appropriate power.
13.Do not drive the equipment under the influence of alcohol or any soothing/
stimulating medicine, as it may result in a serious accident.
14.In case of a fire outbreak or any possible hazard, the operator must leave the
area as fast as possible and look for a safe place. Always have emergency
numbers in hands.
15.In case of emergency, know how to stop the tractor and equipment quickly.
General and mandatory safety measures

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GNL - Rev. 07 - Mar/22
16.Always shut down the engine, remove the key and use the handbrake
before leaving the tractor seat.
17.Never attempt to change the adjustments, clean or lubricate the equipment
while it is moving.
18.Whenever unhitching the equipment, either on the field or shed, do it on a
flat and firm surface. Make sure that the equipment is properly supported.
19.We suggest that you carefully read the manual, as it will be a guide for
periodic verifications that need to be done and will allow that you assure
the maintenance of your equipment.
20.Fasten the safety chain between the tractor and equipment.
21.Do not allow any person or animal to get under the equipment at any time.
22.If there is any doubt after reading it, ask your dealer. For more complicated
operations, there will be the right person to help you there.
23.Please check the general safety instructions on the back cover of this
manual.
General and mandatory safety measures
2. To the operator

10 GNL - Rev. 07 - Mar/22
2. To the operator
1. Use adequate ramps to load or unload the equipment. Do not make the
loading on ditch banks, it can cause a serious accidents.
2. When lifting with a hoist, use the appropriate points to lift.
3. Fasten the moving parts that may get loose and cause accidents.
4. Underpin the equipment wheels appropriately.
5. Use chock blocks and safety chains to secure the equipment to the truck or
trailer during the transport.
6. Stay away from the straps, cables or chains that are working under load.
7. Make sure the SMV (Slow moving vehicle) sign, and all the lights and
reflectors that are required by the local highway and transport autorithies are
in place, are clean and can be seen clearly by all overtaking and oncoming
traffic.
8. After 8 to 10 km transporting, please inspect the load condition. Repeat this
procedure every 80 to 100 km. Give more attention when transporting the
equipment on rough roads, slopes and other adverse conditions.
9. Always be careful with the load height, especially when passing under
electrical power lines, bridges and others.
10.Check all laws and regulations regarding the height limits and load width
while transporting the equipment on truck or trailer. If necessary use banners,
lights and other devices to give adequate warning to the other drivers.
Marchesan does not advise the equipment traffic on highways, because this practice
involves serious security risks in addition to being prohibited by the current existing traffic
law. The transportation for long distances should be done on truck, trailer or others by
following these safety guidelines:
Transportation over truck or trailer

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GNL - Rev. 07 - Mar/22
2. To the operator
Working safety standards
It is important to have knowledge not only about the functioning, operation of the
equipment and its technology, but also the working legal aspects when using the equipment,
such as: safety standards, operator's manual and working safety. The equipment and tools
used on the rural area must be properly handled, otherwise health and safety of involved
personnel may be compromised.
The operator must be capable and authorized to operate the tractor, meaning that that
person must comprehend the functioning instructions of the tractor and know about the
safety standards regarding the job that will be performed.
The Ministry of Labor and Employment created safety standards that aim to decrease
the risk of accidents that may occur to the rural worker. Related to the subject of agicultural
machines and equipments, we specifically cited the NR 06, NR 12, NR 17 and NR 31
standards.
Regulatory Standard - NR 06:
• For purposes of applying this Regulatory Standard, personal protective equipment
(PPE) is considered any device or product that is worn by an individual worker for protection
against risks that could threaten safety and health at work.
Regulatory Standard - NR 12:
• This Regulatory Standard and its annexes provide technical references, basic
principles and protective measures to ensure the health and physical integrity of workers
and establishes minimum requirements for the prevention of accidents and occupational
diseases in the design stages and use of machinery and equipment of all kinds, and also to
its manufacture, importation, trading, exhibition and cession in any way. It is understood as
using phase the construction, transportation, assembly, installation, adjustment, operation,
cleaning, maintenance, inspection, disabling and dismantling of machinery or equipment.
Regulatory Standard - NR 17:
• The purpose of this Regulatory Standard is to establish parameters for the adaption
of the working conditions to the psycho-physiological characteristics of the workers in order
to provide maximum comfort, safety and efficient performance.
• The working conditions include the aspects of lifting, carrying and unloading materials,
furnitures, equipments and environmental conditions of the job and the organization of
work itself.
Regulatory Standard - NR 31:
• This Regulatory Standard has the purpose to establish the precept to be applied on
the organization and on the working environment, in order to make compatible the planning
and development of agriculture, livestock, forestry, forest exploration and aquaculture with
safety on the working environment.

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2. To the operator
The equipment has adequate lifting points located on the frame. When carrying out
the maintenance or lifting the equipment with a hoist, it is essential to hitch the cables to
all of these points.
Lifting points
- Only CAPABLE and AUTHORIZED personnel should carry out the equipment
movimentation.
- Note every condition of each PPE, such as the foot protection, safety glasses,
safety helmet, protective gloves and other PPE as required.
- Use chains, of at least 3 meters long, to lift the equipment safely.
- Use the adequate points for lifting and be sure that the equipment is safe. Avoid
accidents.
- Always isolate the area where the lifting and components movimentation will be
carried out. Always keep a safe distance from the equipment.
ATTENTION! RISK OF ACCIDENT

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GNL - Rev. 07 - Mar/22
2. To the operator
Safety decals
Quantity Model Serial number
2GNL decal 05.03.03.4057
2Tatu logotype decal 05.03.03.5341
1Warning decal 05.03.03.4438
4Lifting points decal 05.03.03.4078
1Read the manual decal 05.03.03.1428
1Lubricate and tighten daily decal 05.03.03.1827
Decal set
The safety decals warn about the equipment points that require more attention and
they should be kept in good repair. If these decals become damaged or illegible, replace
them. Marchesan provides decals, upon request and indication of the respective serial
number.

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3. Data sheet
The GNL disk harrow features a great performance on any type of soil, with higher
income and superior quality. The equipment has notched disc blades on the front gang and
plain disc blades on the rear gang, which are produced under rigorous standards and offer
a higher resistance to wear and impacts. The GNL disk harrow break clods and level the
soil, incorporating herbicides and destroying weeds on the pre-cultivation for several types
of crop.
Its reinforced structure and proper dimensioning is made of folded plates joined by a
good penetration weld and fine finishing, with resistant parts on the load concentrations.
The GNL disk harrow can be transported through the three-point hitch.
Intended use of the equipment
Prohibited use of the equipment
1. To avoid damages, serious accidents or death, do NOT allow passengers on any part
of the equipment.
2. The equipment must not be used by an inexperienced operator or one that do not
know every conduction, operation and command controlling techniques.

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GNL - Rev. 07 - Mar/22
3. Data sheet
Type: ................................................................................... Hinge type offset disk harrow
Model: ....................................................................................................................... GNL
Spacing between disc blades:...............................................................................170 mm
Disc blades dimension: ..................................................... Ø 18" x 3 mm, Ø 18" x 3.5 mm,
..................................................... Ø 20" x 3.5 mm, Ø 20" x 4 mm,
.................................................. Ø 20" x 4.5 mm, Ø 22" x 3.5 mm,
.............................................Ø 22" x 4.5 mm and Ø 24" x 4.5 mm.
Disc blade type:......................................................................... Plain, notched and mixed
Bearings - length: .................................................................................................182 mm
- type: ........... Friction (MA), grease (CM), Duromark (DM) or steel-plated (DMO)
Oil volume on the bearings:....................................................................................110 ml
Spacer spools - length: .........................................................................................167 mm
- type: ...........................................................................................Iron cast
Axle diameter: ...................................................................................Ø 31.75 mm (1.1/4")
Hitching type: .................................................................................. Drawbar / Third-point
Working speed:..............................................................................................9 to 12 km/h
GNL
IMPORTANT
- The weights above were obtained using Ø 20" x 3.5 mm.
- Optional hydraulic cylinder for the models with 32, 36 and 42 disc blades.
Model Number of
disc blades
Cutting width
(mm) Weight (kg) Tractor required power (cv)
GNL
20 1570 520 50 - 60
24 1928 640 70 - 75
28 2269 672 75 - 80
32 2641 857 80 - 85
36 2956 815 85 - 90
42 3487 953 95 - 100

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3. Data sheet
Dimensions for transportation and storage
AA
CC
BB
DD

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GNL - Rev. 07 - Mar/22
3. Data sheet
Dimensions for transportation and storage
Model Number of
disc blades A B C D
GNL
20 1710 1585 2160 1925
24 1710 1585 2160 2290
28 1710 1585 2660 2625
32 1710 1585 2426 2910
36 1710 1585 2960 3325
42 1710 1585 2960 3850
NOTE
- Measures in millimeters.

18 GNL - Rev. 07 - Mar/22
4. Components
0101
0505
0808
0707
0202
0303
0404
0606
GNL - 20 to 42 disc blades
01 - Front frame 05 - Opening adjustment set
02 - Rear frame 08 - Traction set
03 - Front disc gang 09 - Tractor hitch
04 - Rear disc gang 10 - Transport bar