Tatu Marchesan GAIM User manual

INSTRUCTIONS MANUAL
GAIM

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

1
Marchesan Implementos e Máquinas Agrícolas “TATU” S.A. GAIM
Introduction
The GAIM - Hinge-Wheel Offset Disk Harrow - was specially
designed to work in any type of soil with an excellent performance,
mainly for seedbed preparation, incorporating stubbles and
crumbling the soil.
Its rugged structure has a proper size and it is made of
folded steel plates joined by a good penetration weld and with
fine finishing, with resistant parts at the concentrating points of
mechanical strength.
The transportation is done by an efficient wheelset system
that allows the transport over long distances.
This model also features a locking adjustment that allows a
mechanical opening/closure. Optionally, it is possible to use a
hydraulic cylinder to help in this operation.
This instructions manual contains the necessary information
forthebestperformanceofthisharrow.Theoperatormustcarefully
read the entire manual before working with the equipment. Also,
read and understand the safety recommendations.
For any further clarification or in the event of technical
problems that may arise during the service, consult your dealer
and the Technical Support department of the factory. They can
ensure the fully functioning of your TATU disk harrow.

2Marchesan Implementos e Máquinas Agrícolas “TATU” S.A.
GAIM
Table of contents
1. To the owner 3
2. To the operator 4 to 8
3. Data sheet 9
4. Components 10 to 12
5. Assembly 13 to 22
Using the set of wrenches / Disc gangs assembly 13
Assembly of bearings and spacer spools 14
Disc gangs assembly sequence 15 & 16
Assembly of the disc gangs on the frame 17
Frame junction / Scrapers assembly 18
Tires assembly 19
Opening adjustment set assembly (GAIM 12 - 14 disc blades) 19
Opening adjustment set assembly (GAIM 16 - 20 disc blades) 20
Traction set assembly 21
Hydraulic circuit 22
6. Adjustments and operations 23 to 30
Tractor preparation / Harrow preparation / Hitching to the tractor 23
Procedures to transport the harrow 24 & 25
Cutting depth adjustment 26 & 27
Lateral displacement 27
Ways to start the harrowing 28
Direction of the maneuvers 29
Operations - Important points 30
7. Optional 31
Hydraulic cylinder to open or close the gangs 31
8. Maintenance 32 to 34
Lubrication 32
Lubrication points 33
Harrow maintenance / Maintenance precautions 34
9. Important data 35 to 37
Calculation of hourly income 35
Average income table 36
Torque table 37
10. Important 38

3
Marchesan Implementos e Máquinas Agrícolas “TATU” S.A. GAIM
General information
Important
To the owner
Right and left hand side indication 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 frame.
• Only people who own a full knowledge of the tractor and equipment
must operate them;
• Marchesan is not responsible for any damage caused by accident on
transporting, incorrect utilization 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 the incorrect use of the equipment.
The warranty shall not be applied to any equipment, or any parts thereof,
which 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 S/A.
NOTE
The acquisition of any Tatu product assures to the original purchaser the following
rights:
• Warranty certificate;
• Instructions 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.

4Marchesan Implementos e Máquinas Agrícolas “TATU” S.A.
GAIM
To the operator
Dear user!
Respect the ecology. Do not throw trash away. This gesture
of goodwill helps to protect our environment.
Working safely
Read and understand the information before making any
adjustment or maintenance.
Be careful with the environment
Have extreme caution when operating with the power take-off
(PTO). Do not get closer during operation.
The GAIM disk harrow 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 the transportation, maintenance
and storage.
Products such as oil, fuel, filters, batteries and others are
spilled to the soil and can penetrate to the underground layers,
compromising nature. Ecological and conscious disposal of them
should be done.
• Security aspects must be carefully observed to avoid
accidents.
• This symbol is a warning used to prevent accidents.
• The instructions under this symbol refers to the safety of the
operator or third parties, therefore they should be carefully
read and observed.

5
Marchesan Implementos e Máquinas Agrícolas “TATU” S.A. GAIM
To the operator
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, treated seeds)
make any contact with your skin or clothes.
Keep access and work places clean and free from oil and grease.
Risk of accidents.
Never transport the equipment on highways or paved roads
during the night. Avoid that the tractor wheels touch the drawbar in
sharp turns.
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.
For your protection and safety, always wear adequate clothes
and footwear while operating the equipment.
Always use the safety locks to carry out maintenance operations
and to transport the equipment.

6Marchesan Implementos e Máquinas Agrícolas “TATU” S.A.
GAIM
To the operator
• Only trained and qualified personnel are allowed to operate the equipment.
• While working or during transportation, only the presence of the operator is
allowed on the tractor.
• Do not allow children to play or to get over the equipment while it is operating,
during transportation or storage.
• Have full knowledge of the soil before starting to work. Provide the delineation
of obstacles or hazardous locations.
• Use the speed which is suitable to the conditions of the ground or pathways
to be covered.
• Use personal protective equipment (PPE).
• Wear appropriate clothes and footwear. Avoid clothes that are either loose or
hanging from the body, which may become entangled in moving parts.
• Never operate the equipment without its protective devices.
• Be careful while hitching the equipment to the tractor.
• Wear appropriate gloves near the disc blades.
• Never attempt to change the adjustments, clean or lubricate the equipment
while it is moving.
• In case of emergency, know how to stop the tractor and harrow quickly.
• Always shut down the engine, remove the key and use the handbrake before
leaving the tractor seat.
• Only drive the equipment using a tractor with appropriate power.
• Carefully check the transport width on narrow locations.
• Whenever you unhitch the equipment, either in the field or shed, do it on a
flat and firm surface and use the parking stands. Make sure the equipment is
properly supported.
• Please check the general safety instructions on the back cover of this manual.

7
Marchesan Implementos e Máquinas Agrícolas “TATU” S.A. GAIM
Truck or trailer transportation
To the operator
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 other by following these safety guidelines:
• Use adequate ramps to load or unload the equipment. Do not make the
loading on ditch banks, it can cause a serious accident.
• When lifting with a hoist, use the appropriate points to lift.
• Underpin the equipment wheels appropriately.
• Use chock blocks and safety chains to secure the equipment to the truck or
trailer during the transport.
• 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.
• Always be careful with the load height, especially when passing under
electrical power lines, bridges and others.
• Check all laws and regulations regarding the height limits and load width while
transporting the equipment to the truck or trailer. If necessary use banners,
lights and other devices in order to give adequate warning to the other drivers.

8Marchesan Implementos e Máquinas Agrícolas “TATU” S.A.
GAIM
To the operator
Safety stickers
ATENÇÃO
ATTENTION
ATENCIÓN
05.03.03.1428
Leia o manual antes de iniciar o
uso do equipamento.
Read the manual before attempting
to work with the equipment.
Lea el manual antes de iniciar el
uso del equipo.
LUBRIFICAR E REAPERTAR DIARIAMENTE
LUBRICAR Y REAPRETAR DIARIAMENTE
L U B R I C AT E A N D T I G H T E N D A I LY
05.03.03.1827
The safety stickers warn about the equipment points that require more attention and
they should be kept in good repair. If these stickers become damaged or illegible, replace
them. Marchesan provide stickers, upon request and indication of the respective serial
number.
Model Serial number
GAIM sticker 05.03.06.0791
Sticker set

9
Marchesan Implementos e Máquinas Agrícolas “TATU” S.A. GAIM
Data sheet
Type: ............................................................................Hinge-Wheel Offset Disk Harrow
Model: ...................................................................................................................GAIM
Spacing between disc blades:............................................................................ 270 mm
Discs dimension: ....................................................................................Ø 26" x 6.0 mm
....................................................................................Ø 28" x 6.0 mm
Number of disc blades: ..................................................................12, 14, 16, 18 and 20
Disc blade type:...................................................................................Concave notched
Bearings - Length: ............................................................................................. 262 mm
- Type: ..................................................... Oil bath/Regreasable roller bearings
Spacer spools - Length: ..................................................................................... 262 mm
- Type: ..............................................................................................Cast
Axle diameter: ..................................................................................... Ø 41 mm (1.5/8")
Hitching type: .............................................................................................. Traction bar
Working speed:.............................................................................................. 5 a 7 Km/h
Tires:..................................................................................................6.00 x 16 (45 PSI)
The weights above were obtained using Ø 26" disc blades.
NOTE
Model Number of disc
blades
Cutting width
(mm) Net weight (kg) Tractor required (cv)
GAIM
12 1500 1230 75 - 80
14 1750 1320 80 - 90
16 2000 1409 95 - 105
18 2300 1647 110 - 115
20 2570 1771 118 - 130

10 Marchesan Implementos e Máquinas Agrícolas “TATU” S.A.
GAIM
Components
GAIM - 12 - 14 disc blades (mechanical)
01 - Front frame 06 - Traction bar
02 - Rear frame 07 - Front disc gang
03 - Adjustment bar 08 - Rear disc gang
04 - Hitch bar 09 - Handle
05 - Locking adjustment 10 - Wheelsets
01
02
03
04
05
06
07
08
10
10
09

11
Marchesan Implementos e Máquinas Agrícolas “TATU” S.A. GAIM
GAIM - 12 - 14 disc blades (hydraulic cylinder)
01 - Front frame 07 - Rear disc gang
02 - Rear frame 08 - Hydraulic cylinder
03 - Adjustment bar 09 - Handle
04 - Hitch bar 10 - Hose support
05 - Traction bar 11 - Wheelsets
06 - Front disc gang
01
02
03
04
05
06
07
08
09
10
11
11
Components

12 Marchesan Implementos e Máquinas Agrícolas “TATU” S.A.
GAIM
Components
GA - 16 - 20 disc blades (mechanical)
01 - Front frame 07 - Locking adjustment
02 - Rear frame 08 - Traction bar
03 - Adjustment bar 09 - Front disc gang
04 - Hitch bar 10 - Rear disc gang
05 - Front stabilizer bar 11 - Handle
06 - Rear stabilizer bar 12 - Wheelsets
Optional parts: See page 31.
09
01
02
03
04
05 06
07
08
12
10
11
12

13
Marchesan Implementos e Máquinas Agrícolas “TATU” S.A. GAIM
Assembly
Using the set of wrenches
NOTE We recommend wearing gloves, especially while assembling the disc gangs.
Disc gangs assembly
Before starting to assemble the disc gangs, check the correct position of the bearings
and spacer spools, according to the following steps:
Use two box end wrenches (A) to tighten the nuts of the disc gang, being one to
hold the axle nut on one side while the other tighten the nut to the other end, thereby
preventing the axle from rotating.
Use the L shaped socket wrench (B) to tighten the nuts on the bearing bolts.
Use the box end wrench (C) to tighten the nuts of the traction set.
B
C
A
First of all, put the parts in a clean place to identify them easier. Check the parts
using the list that comes inside the packing box.

14 Marchesan Implementos e Máquinas Agrícolas “TATU” S.A.
GAIM
Assembly
Assembly of bearings and spacer spools
GAIM 12 - 14 disc blades........................................................................04 bearings;
GAIM 16 disc blades...............................................................................06 bearings;
GAIM 18 - 20 disc blades........................................................................08 bearings.
GAIM - 12 GAIM - 14 GAIM - 16
GAIM - 20
GAI - 18
Bearing
Spacer spool

15
Marchesan Implementos e Máquinas Agrícolas “TATU” S.A. GAIM
Assembly
Disc gangs assembly sequence
• Place the outer washer (A) along with the axle (B).
• Tighten the nut (C) passing 5 mm from the axle face.
• Place the disc blades (D), bearings (E) and spacer spools (F), following the
instructions on page 14.
• Place the inner washer (G) and the other nut (C-1).
• Place the bolt (H) that fasten the lock nut (I), along with a spring washer and nut
(only on the outer side of the gangs).
• Use the wrenches (A) from page 13 to tighten the gangs, as follows:
1º) Place one of the wrenches on the outer side of the gangs (locked side), supporting
it on the ground.
2º) On the inner side, use the other wrench and tighten the gangs to get maximum
torque.
3º) To tighten, the gangs must remain underpinned with a piece of wood or another
object, preventing them from moving.
• Lastly, place the bolt (H-1) and position the lock nut (I-1), fastening with a spring
washer and nut.
IMPORTANT • Check the correct side of the bearings and spacer spools according
to the concavity of the disc blades.
Grease fitting or plug

16 Marchesan Implementos e Máquinas Agrícolas “TATU” S.A.
GAIM
Assembly
Consult torque table on page 37.
NOTE
F
DE
EB
I
G
D
A
C
H1
H
C1
I1
Axle torque
Axle diameter Ft. - lbs.
1.1/2" 2670
1.5/8" 2890
2.1/8" 3300
2.1/2" 3500

17
Marchesan Implementos e Máquinas Agrícolas “TATU” S.A. GAIM
Assembly
IMPORTANT The rear gang turns earth to the left and the front gang turns earth
to the right.
In the gang assembly to the carriers, the bearing
hangers should remain facing the disc blades concavity.
Place a bolt (A) and squared washer (B), passing through the bearing housing and
the bearing hanger holes. On top, place a flat washer, spring washer and nut.
Repeat this operation for other bearings.
A
B

18 Marchesan Implementos e Máquinas Agrícolas “TATU” S.A.
GAIM
Assembly
Frame junction
Approach both frames and
place the junction pin (A) and
cotter pin.
Scrapers assembly
The scrapers feature an adjustment to approach or distance them from the
disc blades, on a range from 5 to 10 mm.
NOTE
A
A
Note the fixing point of the scrapers with
the end facing the concave side of the disc
blades.
Assemble the scrapers (A) using bolts (B)
and locks (C), which are placed underneath
the fixation plate. On top, place flat washers,
spring washers and nuts.
A
B
C
Double scraper
provided as
optional