mandam SPEC HD Farm Cultivator User Manual
- June 13, 2024
- MANDAM
Table of Contents
OPERATION MANUAL
SPEC HD CULTIVATOR
Revision
II
Gliwice 2023
SPEC HD Farm Cultivator
EC DECLARATION OF CONFORMOTY
FOR THE MACHINE
Pursuant to the Ordinance of the Minister of Economy of 21 October 2008
(Journal of Laws No. 199, item 1228) and the Directive of the European Union
2006/42/EC of 17 May 2006
MANDAM Sp. z o.o.
ul. Toruńska 14
44 -100 Gliwice declares with full responsibility that the machine:
SPEC HD CULTIVATOR
type/model …………………………
serial No. …………………………
year of production …………………………
under this declaration, complies with:
Ordinance of the Ministry of Economy of October 21, 2008 on the essential
requirements for machines (Journal of Laws No. 199, item 1228) and Directive
of the European Union 2006/42/EC of 17 May 2006
Persons responsible for the technical documentation of the machine: Jarosław
Kudlek, Łukasz Jakus
ul. Toruńska 14, 44-100 Gliwice
The following standards were also used to assess compliance:
PN-EN ISO 13857:2010,
PN-EN ISO 4254-1:2016-02,
PN-EN ISO 12100-1:2005/A1:2012
PN-EN ISO 12100-2:2005/A1:2012
PN-EN 982+A1:2008
This EC Declaration of Conformity loses its validity, if the machine is
modified or converted without the manufacturer’s consent.
|
---|---
Place and date of issue| Surname, first name, position and signature of the
authorized person
Introduction
We would like to congratulate you on the acquisition of the SPEC HD
cultivator.
This manual provides information on hazards that may occur when using and
working with the cultivator, technical data and the most important indications
and recommendations, the knowledge and application of which is a prerequisite
for proper operation. Keep this manual for future use. If you do not
understand any of the provisions of this manual, please contact the
manufacturer.
Notes that are important for safety reasons are marked with the sign:
Machine identification
Identification data for the SPEC HD cultivator can be found on the rating
plate on the main frame, which includes the CE mark, basic information about
the manufacturer and the machine:
The guarantee for the
cultivator is valid for 12 months from the date of sale.
The warranty card is an integral part of the machine.
Please always quote the serial number when making enquiries about spare parts.
Information on spare parts can be found:
- on the web site: http://mandam.com.pl/parts/
- phone +48 668 662 289
- E-mail: parts@mandam.com.pl
1.1. Safety signs and inscriptions
Remember! When using a cultivator, special care should be taken in
areas marked with special information and warning signs (yellow stickers).
The signs and inscriptions on the machine are detailed below. Safety signs and
inscriptions should be protected against loss and loss of legibility. Signs
and inscriptions that are lost and illegible should be replaced with new ones.
Table 1 Information and warning signs
Safety signs| Meaning of the safety sign| Location on the
machine
---|---|---
| Read the operating instructions before use.| Frame near mounting of the
upper fastener.
| Crushing of the toes or foot.| Frame near mounting of the upper fastener.
| Keep clear of the lift bars while controlling the lift.| Frame near mounting
of the upper fastener.
| Keep a safe distance from foldable and moving parts of
the machine| Front part of the mid frame near the side frames
| Do not reach into the crushing area if parts may move| Mid frame near side
frames
| Pressurised liquid jet bodily harm| Cylinders
| Fixing point for transport blts| Upper part of the drawbar (upper fastener
bolt)
Rear frame part:
• rigid frame (adjacent to the roller depth adjustment)
• foldable frame (adjacent to the upper fastener bolt on the mid frame)
General information
2.1. Construction of the SPEC HD cultivator
The cultivators produced are available in working widths: 2.5m, 3.0m, 4.0m and
4.8m.
Fig.1 SPEC HD 4.0 H cultivator.
The main frame of the cultivator is the basic load-bearing element of the
entire machine. In the version that exceeds a width of 3 m, the cultivator
consists of a mid frame and side frames folded hydraulically into the
transport position (Fig.1). The plough beams with working components are
attached to the frame. Standard cultivators are equipped with a shaft and a
disc beam mounted to the shaft arms. Each disc has its own bearing
(maintenance-free hubs), allowing the disc to be optimally inclined to the
direction of travel and the ground. The task of the discs is to level the soil
surface distorted by the last row of working components. The shafts are used
to compact opened soil and maintain the working depth of the cultivator.
Table 2 Types of the SPEC HD cultivator
Type| Working width
[m]| Number of teeth
[pcs.]| Number of discs
[pcs.]| Min power res.
[KM]| Weight
[kg]
---|---|---|---|---|---
SPEC HD 2,5| 2,50| 8| 7| 110| 1319
SPEC HD 3,0| 3,00| 10| 8| 130| 1505
SPEC HD 4,0 H| 4,00| 13| 10| 180| 2520
SPEC HD 4,8 H*| 4,80| 16| 12| 220| 3365
*machine with integrated running gear
2.2. Purpose of the SPEC HD cultivator
The SPEC HD cultivator is an all-purpose machine for shallow ploughing or used
instead of ploughing for:
- shallow stubble cultivation (up to 15 cm) to mix post-harvest residues, stop soil water evaporation,
- increase the growth of weeds and self-seeding plants, and reduce ploughing resistance, or deep
- cultivation,
- deep cultivation (up to 35 cm) to loosen cultivated soil, mix mineral and organic fertilizers, and prevent
- mineralisation of humus in the ploughing soil.
The application of right and left side shields improves the degree of stubble
mixing. As a result, the concentration of phenol compounds affecting the
growth of crops in the following year is reduced. The application of the SPEC
HD cultivator for deep cultivation eliminates the need of ploughing, and as
such, this allows cost reduction, eliminates the risk of excessively compacted
soil, and helps to complete farming work on time.
NOTE! The cultivator is designed exclusively for agricultural use. Use for
any other purpose will be construed as misuse and will void the warranty.
Failure to comply with the recommendations in these operating instructions
will also be construed as misuse.
NOTE! The manufacturer is not liable for damage resulting from the
operation of the machine not in accordance with its intended use.
General safety rules
The cultivator may only be used and repaired by persons who are familiar with
its operation and the mating tractor and with the rules of conduct for the
safe operation and handling of the cultivator. The manufacturer is not
responsible for arbitrary changes to the design of the cultivator. During the
warranty period, only factory-made “MANDAM” parts must be used.
The cultivator should be operated with all precautions in mind, in particular:
- before each start-up, check that the cultivator and the tractor are in safe condition when moving and working,
- use of the machine by minors, persons who are ill or under the influence of alcohol or other intoxicants is prohibited,
- use work clothes, footwear and gloves when carrying out maintenance work,
- permissible axle loads and transport dimensions must not be exceeded,
- use only original safety and split pins,
- when working with the cultivator, when lifting, lowering and unfolding, there should be no bystanders in the vicinity, especially children,
- it is forbidden to stay between the tractor and the cultivator while the engine is running,
- move forward, lift and lower the cultivator slowly and smoothly without sudden jerks, making sure that nobody stays in the vicinity,
- do not stand on the machine or put any additional weight on it during operation or transport,
- during u-turns, special care should be taken if there are bystanders in the vicinity,
- carry out any repairs, lubrication or cleaning of working parts only with the engine switched off and the machine lowered and unfolded,
- when not in use, the machine must be lowered to the ground and the tractor engine stopped, machines must be stored in such a way as to prevent injury to people and animals,
- It is forbidden to turn or reverse with the machine lowered.
3.1. Proper coupling and uncoupling of the machine to/from the tractor
- The attachment of the machine to the tractor must be made as specified, remembering to secure the pins and to secure the suspension pins with split pins.
- When coupling the tractor to the cultivator, it is forbidden for persons to stay between the machine and the tractor during this time.
- The tractor working with the cultivator must be fully operational. Coupling to a tractor with a defective hydraulic system is prohibited.
- Make sure that the tractor with the attached unit is stable, and the tractor steerability and stopping power can be maintained. The load on the front axle cannot drop below 20% of the total load on the tractor axle – set of front-mounted weights.
- In the resting position, the machine, when uncoupled from the tractor, should maintain a stable equilibrium.
3.2. Tyres
- Tyre pressures must not exceed those recommended by the manufacturer and it is forbidden to transport the machine at too low a pressure. This may damage the machine and cause an accident on large uneven surfaces and when driving too fast.
- Significantly damaged tyres (particularly profile damage) must be replaced immediately.
- When replacing tyres, the machine must be secured against rolling.
- Repair work on wheels or tyres should be carried out by persons trained and authorised for this purpose. This work should be carried out with appropriately selected tools.
Each time the wheels are fitted, the tightness of the nuts should be checked after 50km.
3.3. Hydraulic and pneumatic system
The hydraulic system is under high pressure. All precautions should be taken,
in particular:
➢ do not connect or disconnect the hydraulic lines when the tractor’s
hydraulic system is under pressure (hydraulics set to neutral),
➢ regularly check the condition of the connections and the hydraulic and
pneumatic hoses.
- the unit must be taken out of service while the hydraulic or pneumatic failure is being rectified.
3.4. Safety regarding transport on public roads
For transport, the side sections of the SPEC HD cultivator must be folded into
the transport position using the hydraulic system. Before folding, the machine
must be raised to the extent that the side sections do not interfere with the
ground during folding.
During transport, the clearance under the machine should be at least 30 cm
While transporting the unit on public roads, it is mandatory to apply lighting
equipment, identification emblem and reflective side lights if the rear
3-point hitch is used.
The travelling speed during transport must not be exceeded:
➢ on roads with a smooth surface (asphalt) up to 20 km/h,
➢ on dirt or paved roads 6-10 km/h,
➢ on bumpy roads not more than 5 km/h.
The driving speed must be adapted to the condition of the road and the
conditions on the road, so that the cultivator does not bounce on the
tractor’s suspension system and there are no excessive loads on the machine
frame and the tractor’s suspension system. Particular care should be taken
when passing and overtaking and on bends. The permissible width of the machine
when travelling on public roads is 3.0 m. It is forbidden to transport the
unit where the slope transverse to the aggregate exceeds 7º.
WARNING! Failure to comply with the above rules may create hazards for
the operator and bystanders as well as damage to the machine. Damage resulting
from non-compliance with these rules is the responsibility of the user.
3.5. Description of residual risk
Mandam Sp. z o.o. makes every effort to eliminate the risk of accidents. There
is, however, a residual risk that could result in an unfortunate accident. The
greatest danger occurs when:
- using the machine for purposes other than those described in the instructions,
- using the machine by minors, persons who are not authorised, who are ill or who are under influence of alcohol or other drugs,
- persons and animals within the operating range of the machine are present,
- no caution is paid when transporting and manoeuvring the tractor,
- staying on the machine or between the machine and the tractor while the engine is running,
- operating and failure to comply with operating instructions,
- driving on public roads.
3.6. Assessment of residual risk
Residual risk can be minimised by applying the following recommendations:
- prudent and unhurried operation of the machine,
- careful reading of operating instructions,
- keeping a safe distance from danger zones,
- prohibition on being on the machine and in the operating area of the machine while the tractor engine is running,
- carrying out maintenance work in accordance with safety rules,
- use of protective clothing and, if working under machinery, a helmet,
- prevention of unauthorised access to the machines, especially by children.
Hazards:
Noise: If the SPEC HD cultivator is used on stony soils, significant
noise may result. In this case, it is advisable to keep the windows and doors
of the tractor closed. You can also wear ear protectors.
Dust: In very dry conditions, very heavy dusting can occur. In such
cases, it is recommended that the doors and windows of the tractor remain
closed. In extreme conditions, a dust mask is recommended.
Information on handling and use
Before starting the machine for the first time:
- refer to the operating instructions,
- make sure the machine is in good working order,
- check the condition of the hydraulic system (replace components if damaged, e.g. pressure hoses),
- make sure that the machine’s pressure hose couplings fit into the sockets on the tractor,
- check the tightness of the individual bolts and nuts,
- check the air pressure in the wheels in accordance with the manufacturer’s recommendations,
- ensure that all components requiring lubrication are lubricated,
- ensure that the pressure in the tractor wheels is the same on each axle to ensure even operation.
NOTE! The permissible axle loads and tyre load capacities must not be
exceeded. The front axle load must not be less than 20% of the total load.
The tyre pressure should be in accordance with the manufacturer’s
recommendations 
Fig. 2 Diagram of
tractor load designations.
Axle load calculations
Designations:
GC – tractor weight,
TP– front axle load of the empty tractor,
TT – rear axle load of the empty tractor,
GP – total weight of front-mounted device,
GT – total weight of rear-mounted device,
a – distance between the centre of gravity of the front-mounted device and the
centre of the axle,
b – tractor wheel track,
c – distance between the centre of the rear axle and the centre of the hitch
bolt of the rear device,
d – distance of the machine’s centre of gravity from the tractor’s hitch bolt
(for all widths assume 1.9 m)
x – distance of the centre of gravity from the rear axle (if the manufacturer
does not specify this parameter, enter 0.45).
4.1. Preparing the cultivator for work
The cultivator is usually delivered ready for work. Due to the limitations of
transport facilities, it is also possible to deliver it in a partially
dismantled state – this usually involves disconnecting the rear shaft, disc
beam and discs.
When the unit is first prepared for use, its components must be assembled:
cultivator, shaft and discs. To do this, place the cultivator on a flat hard
surface in a position that allows the shaft to manoeuvre. Position the shaft
arms in the cultivator brackets and connect the arms to the shaft bracket with
screws (Fig. 3). Then mount the beam with discs to the shaft arms. The discs
should be set so that their work causes the furrows created by the coulters of
the last row of the cultivator to be filled in. There is one pair of discs per
plough beam in the last row (left and right discs – Fig. 4).
Fig. 3 Connection of the arms
with shaft bracket.
NOTE! The correct procedure for mounting the shafts in the arm holders
requires that the bolts be evenly tightened diagonally, so that the entire
plane of the arm holders is adjacent to the plane of the shaft clamp profile.
This provides the most secure way of connecting the shaft arms to the machine!
Fig. 4 Arrangement of discs on the beam.
NOTE! While preparing the machine for deep soil cultivation, dismount all
cutting wings as they may contribute to extensive compaction of the soil,
resulting in plough pan effect, and increase the operating resistance.
SPEC HD cultivators are optionally available with a disc beam with disc
holders with rubber protection to prevent the holders from twisting
excessively during machine operation (Fig. 5). Fig. 5 Disc beam with rubber protection.
4.2. Coupling the cultivator to the tractor
The tractor wheel tyre pressure should be in accordance with the manufacturer’s recommendations. The lower links of the three-point hitch should be at an equal height, at a spacing corresponding to the spacing of the lower suspension points. When connecting the cultivator to the tractor, the cultivator should stand on firm and level ground. Fig. 6 Three-point suspension system of the tractor’s three-point hitch: 1,2 – lower links, 3 – upper fastener, 4 – left suspension, 5 – right suspension with adjustable length, 6 – lift arm, 7 – lift shaft
When attaching the cultivator to the tractor’s three-point hitch, perform the following steps:- switch the tractor’s hydraulic system to position control,
- remove the lower hitch bolts (in case the tractor linkage is not equipped with hooks),
- drive up carefully, suspend the machine from the lower links, then secure,
- connect the top upper fastener on the tractor. During operation of the unit, the hitch point of the upper fastener at the unit must be higher than the attachment point of this fastener at the tractor,
- check the lifting and lowering of the cultivator and the operation of the hydraulic system.
Any tractor that is used with the machine must be equipped with a set of
weights and must remain steerable during transport, i.e. a minimum of 20% of
the tractor’s weight must be on the front axle.
NOTE! Hitching the tractor to the cultivator must be done carefully, at
minimum tractor speed! When hitching the machine, make sure there are no
bystanders in the vicinity.
4.3. Operation and adjustment
4.3.1. Side arms adjustment
On cultivators with folding side frames, the level adjustment of these frames
must be carried out using the screws built into the front and rear of the mid
frame (at each hinge – Table 3). Properly adjusted side arms should be at the
same level as the mid frame. Once adjusted, secure the screw with a lock nut.
Table 3 Side frame level adjustment.
| Incorrect adjustment
---|---
| Incorrect adjustment
| Correct adjustment
Before carrying out field work with an unit with folding side arms, the hinge
lock must always be in place and secured with a cotter pin (Fig. 7). 
Fig. 7 Lock in transport position (fig. a), lock in working
position (fig. b).
NOTE! It is forbidden to carry out field work with units with folding
side arms without the hinge lock in place.
Remember to remove the hinge lock before lifting the side arms into the
transport position.
A properly hitched cultivator should follow the tractor evenly during
operation and loosen the soil uniformly over the entire working width. For
longitudinal levelling, use the tractor’s top link (turnbuckle), while for
transverse levelling, use the crank on the tractor’s right-hand suspension.
4.3.2. Working depth adjustment
The working depth is adjusted by changing the height of the roller in relation
to the cultivator frame using the tractor’s hydraulic lift and pins with
stabilising plates inserted into pre-drilled plates fixed on the frame (Fig.
8). It is also possible to change the distance of the shaft from the
cultivator frame (screw in Fig. 8). Note that too little distance between the
tines and the plates can cause clogging with plant residues. 
Fig. 8 Adjusting the depth and distance of the tubular shaft.
An optional version of the cultivator with mechanical adjustment of the
working depth using turnbuckles (fig. 9) and a version with hydraulic
adjustment of the working depth (fig. 10) are available. In this case, the
arms of the working shaft are adjusted by hydraulic cylinders.
Fig. 9 Mechanical adjustment of tube shaft depth using
turnbuckles.
The working depth of the machine is set in this case by means of turnbuckles,
which adjust the suspension distance of the disc beam in relation to the shaft
arms. As this distance increases, the working depth of the discs increases.
When changing the aforementioned distance between the disc beam and the
working shaft arms, the angle of attack of the disc beam must be adjusted with
the horizontal turnbuckle so that the discs are always oriented horizontally
relative to the field plane. The same procedure should be carried out with
respect to the working shafts, also changing their angle of attack if the
height of the shaft arm suspension changes.
NOTE! When changing the depth of the discs using a turnbuckle, remember
that the discs should always be below the level of the working shaft in order
for them to work properly!
Fig. 10 Hydraulic depth
adjustment of the tube shaft.
For machines with hydraulic adjustment of working depth, the working depth of
the machine is set using pawls located at the piston rod of the cylinder. As
more pawls are folded, the operation of the machine becomes shallower. In a
configuration where none of the pawls are installed, the machine is in its
greatest working depth configuration. In (Fig. 11 and Fig. 12), the correct
way of installing the subsequent pawl plates on the actuator and the incorrect
way of installing them are shown.
Fig. 11 Correct way to put the first (1) pawl
on the piston rod of the cylinder to adjust the working depth of the machine.
Fig. 12 Incorrect installation of pawls on cylinder piston rod.
Partial omission of the attachment of the pawls to the cylinder results in
uneven distribution of the forces acting on the piston rod and can lead to
piston rod buckling resulting in damage to the entire cylinder assembly. This
kind of adjustment is unacceptable!
The number of pawls on all shaft arm cylinders must always be equal!
The working depth of the discs is set according to the depth of the
cultivator. The discs must work on the surface to evenly level the soil behind
the plough beams.
The SPEC HD cultivator elements can be adjusted in terms of angle of attack.
The more horizontal position of the coulters reduces working resistance and
undercuts the stubble with low loosening – recommended for compact soils with
optimum moisture content and soils of medium and low compactness (nut on the
spring screw). The steeper position of the coulter facilitates penetration and
loosens the soil to a greater extent – recommended for hard and dry soils.
Note that as the screw twist changes, so does the strength of the protection
induction.
WARNING! It is forbidden to make adjustments to the machine while the
tractor engine is running.
The working speed of the SPEC HD cultivator under normal operating conditions
should be 8 – 12 km/h.
The machine must be raised before turning and during reverse travel.
4.4. Rules for transporting the cultivator on public roads and lighting the
machine
In accordance with the road safety regulations (Regulation of the Minister of
Infrastructure of 31.12.2002. Journal of Laws No. 32 of 2002, item 262) – the
unit consisting of the agricultural tractor and the agricultural machine
coupled with it must meet requirements identical to those imposed on the
tractor itself.
NOTE! The unit as a part of the vehicle protruding beyond the rear side
contour of the tractor obscuring the rear lights of the tractor poses a danger
to other vehicles on the road. Remember to follow the transport
recommendations in the chapter: 3 “General safety rules”. It is forbidden to
travel on public roads without appropriate markings.
The units should be equipped with:
- triangular plate to distinguish slow-moving vehicles,
- two forward-facing plates having a white position light and a white retro-reflector,
- two rear-facing plates having a combination light and a red reflector. The plates should be painted with diagonal white and red stripes.
Once the plates have been fixed, the electrical wires of the warning-light
device should be connected to the socket of the tractor’s electrical
installation.
The manufacturer does not supply warning signs as standard equipment on the
machine. Warning signs are available commercially.
Driving style should always be adapted to the road conditions – this will help
avoid accidents and damage to the chassis. Consider your own skills and the
intensity of the movement, the prevailing visibility and the weather.
Fig. 13 Lighting and rear light assemblies and their location.
Before transporting, the machine should be cleaned from the soil and the
operation of the lights checked. After lifting the machine, check the
clearance under the lowest working elements, which should be at least 25 cm.
The permissible transport speed of the tractor with the machine is 15 km/h. It
should be reduced to 10 km/h on roads with poorer surfaces and 5 km/h on dirt
roads. Extreme caution should be exercised when passing and overtaking other
vehicles, avoiding obstacles and crossing large irregularities in fields and
dirt roads.
4.5. Maintenance and lubrication
- Each time the cultivator is finished working, the soil must be cleaned, followed by an inspection of the parts and assemblies. Otherwise, there may be a problem with the folding of the machine if the shafts are clogged with soil and there is an additional load!
- Re-tighten all screws after the first 4 hours of operation and periodically check the tightness. Failure to do so will exacerbate backlash and result in damage to the machine.
- The blade tips can be used almost until they are worn down, until the working surface is equal to the initial blade foot surface. However, it is advisable to replace the tips early enough before there is a possibility of wear and damage to the blade foot.
- Lubricate the grease points on the hinge pins daily during the life of the machine. Lubricate the bearings of the shaft and the levelling discs every 25 operating hours (does not apply to maintenance-free disc bearings – these bearings do not need to be serviced and lubricated).
- When replacing worn components, use thread glue, original bolts and nuts.
- For screwing the working elements, use M12 screws, class 10.9 and tighten them with a torque of 135Nm.
- Damaged or worn parts must be replaced with new or reconditioned parts.
- Always ensure that screw connections are properly tightened.
NOTE! Periodic lubrication is a guarantee of the durability of the
machine.
The service life and efficiency of the machine depend to a large extent on
regular lubrication. Mineral lubricants should be used for lubrication.
Lubrication points must be thoroughly cleaned before pressing in or applying
grease.
NOTE! It is forbidden to work on a damaged machine caused by any event
resulting in a broken, or deformed frame, shaft or other assembly of the
machine!
4.6. Screw tightening torque
Bolts and nuts should be tightened in the machine with the correct torque
depending on the strength class of the bolt and its thread size and pitch.
Their respective tightening torque values are shown in Table 4.
Table 4 Tightening torque values for nuts and bolts.
Tightening torque for nuts and bolts [Nm]
| Bolt strength class
---|---
| Thread pitch| 8.8| 10.9| 12.9
Dimensions| M4| 0,7| 3,2| 4,5| 5,2
M5| 0,8
6| 8,4| 10
M6| 1, 0| 11| 15| 17
MS| 1,3| 27| 34| 40
1,0| 21| 30| 35
M10| 1,5| 46| 65| 76
1,3| 41| 75| 67
1,0| 36| 50| 59
M12| 1,8| 79| 111| 129
1,3| 65| 91| 107
M14| 2,0| 124| 174| 203
1,5| 104| 143| 167
M16| 2,0| 170| 2A i| 277
1,5| 139| 196| 228
M18| 2,0| 258| 363| 422
1,5| 180| 254| 296
M20| 2,5| 332| 469| 546
1,5| 229| 322| 375
M22| 2,5| 415| 584| 682
1,5| 282| 397| 463
M24| 3,0| 576| 809| 942
2,0| 430| 603| 706
M27| 3,0| 740| 1050| 1250
2,0| 552| 783| 933
M30| 3,5| 1000| 1450| 1700
2,0| 745| 1080| 1270
M36| 4,0| 1290| 1790| 2020
2,0| 960| 1340| 1500
NOTE! It is forbidden to work on a damaged machine caused by any event resulting in a broken, or deformed frame, shaft or other assembly of the machine!
Everyday service
Each time the cultivator is finished working, it should be cleaned of soil,
plant residues and the condition of the screws and pin connections and the
condition of the working elements and other parts should be inspected. During
cleaning, plant debris and strings winding up on the bearing points of the
shaft should be removed. If parts are found to be damaged or worn, they should
be replaced. All loose screw connections must be tightened and damaged cotter
pins and pins must be replaced.
5.1. Out-of-season handling and storage
At the end of the working season, the cultivator should be thoroughly
cleaned and any damage to the paintwork repaired. The stripped working
surfaces of the teeth, discs, strings and shaft rings, as well as the threads
of the adjusting screws, must be washed, dried and preserved. In addition,
full lubrication should be carried out. It is advisable to store the machine
under a canopy when not in use. If this is not possible, the condition of the
protection should be checked from time to time and rain-washed grease should
be replenished if necessary. The cultivator should be stored in a place that
poses no danger to persons or the environment. The machine, when uncoupled
from the tractor, should be supported on firm and level ground. Also,
components dismantled from the machine should be stored securely supported on
the ground, excluding possible uncontrolled movement.
Clean the piston rods of the hydraulic cylinders during winter and when the
machine is not in use for a long period of time, and protect them with
vaseline or acidfree grease to protect them from corrosion.
5.1.1. Operation of the hydraulic system
Maintenance of the hydraulic system (Figure 14) consists of a visual
inspection for leaks. Remember to put plugs on the quick-release couplings. If
there is any oil leakage at the connections of the hydraulic lines, the
coupling must be tightened. If this does not rectify the fault, the component
or hose must be replaced with a new one. Leakage occurring outside the
connector – the leaking hose must be replaced with a new one. Mechanical
damage also requires replacement of the component. It is recommended to
replace the hydraulic hoses every 5 years. If there is oil on the piston rod
of the hydraulic cylinder, the nature of the leak should be checked. When the
piston rod is fully extended, check the sealing points. Minor leaks
characterised by wetting of the piston rod (so-called oil film) are
acceptable. In the event of stronger “sweating” or the appearance of droplets,
the unit should be switched off for the duration of the fault rectification
(defective unit ring).
Figure 14 Diagram of the SPEC HD hydraulic
system: 1- cylinder, 2- quick coupling, 3- tee, 4- orifice, 5- copper washer,
6- hydraulic hose 1m, 7- hydraulic hose 0.7m, 8- hydraulic hose 2.2m.
5.1.2. SPEC HD running system handling (optional)
As an option, the SPEC HD cultivator can be equipped with a transport trolley
(fig. 15).
This trolley can also have its own brake axle (pneumatic system). 
Fig. 15 SPEC HD
cultivator equipped with a transport trolley (optional).
Regular control of wheel pressure. If there is a significant loss of air
from the tyres, check the air valve for leaks. Next, take the wheel to a
specialised workshop to locate and repair the damage. Significantly damaged
tyres (particularly profile damage) must be replaced immediately.
Setting of wheel bearing axial clearance.
It is recommended that this operation is carried out by a specialised company.
Performed by tightening the nut on the wheel hub after the wheels have been
removed. The recommended clearance is 0.12-0.15 mm. Inspection and adjustment
should take place every 2 years.
Procedure:
- Removal of the hub cover and the spring pin securing the spring nut.
- At the same time, while turning the hub, press down and tighten the crown nut.
- Tightening is complete when no more than half a turn of the hub is caused by vigorous hand rotation.
- Partially loosen the nut until the hub rotates freely and repeat the tightening.
- After repeated rotation locking, loosen the nut by 30º max. until the immediate nut locking with the pin is possible. Mark the position with a line.
- From the marked position, unscrew the nut by half a turn and, with a gentle tap, press the hub against the nut as far as it will go.
- Tighten the nut to the position marked with the line.
- Fit the hub cover.
NOTE! During maintenance work, the unit should be secured against rolling
(it should be connected to the tractor with the parking brake on) and
unfolded.
Operation of the brake system (pneumatic system)
The three-range brake force regulator is not adjustable under normal use.
It should be in a central position. If the braking force deviates from that of
the tractor, the regulator can be adjusted to avoid incorrect road behaviour.
When making any change, be sure not to cause an accident or damage to the
machine.
The removal of condensed water in the tank is carried out by means of a valve
located underneath the tank. The stem must be pressed, which will cause the
compressed air to displace the water. Releasing the stem will automatically
close the valve. Once a year (before winter) the drainage valve should be
unscrewed and cleaned.
Checking the pneumatic system involves visually inspecting for leaks,
especially at the connection points (when checking the system, the pressure
should not be less than 6 atmospheres). If hoses, seals and other system
components are damaged, this will manifest itself as hissing. Bubbles will
appear at small leaks (check by applying wash liquid). Damaged components
should be replaced with new ones.
Braking adjustment – braking deceleration levelling, should be carried out when:
- As the lining jaws wear during use and as a result of the resulting clearance, the braking force decreases,
- the wheel brakes brake unevenly and inconsistently.
To do this, the position of the spreader arm on which the piston rod of the pneumatic cylinder acts must be changed. Change the starting angle of the spreader shaft on the multi-shaft end and correct the length of the linkage on the bolt. Adjustments should be carried out for each wheel separately.
Replacement procedures
Bearing replacement.
If the bearings are damaged, they must be replaced:
- place the machine on a horizontal surface,
- unscrew the four screws holding the ball bearings on each side,
- move the tubular shaft away,
- loosen the two headless screws on each bearing and pull off the bearings using an extractor,
- fit the new bearings loosely onto the shaft,
- roll the shaft between the bearing plates and screw the bearings to them. Screw in headless screws using adhesive to prevent loosening.
Replacement of working components
Excessively worn working components make it difficult for the tools to sink
in, increase working resistance and insufficiently mix harvest residues. The
working components must be changed on the machine lowered to the ground after
the tractor engine has been switched off. To ensure that the components to be
replaced do not rest on the ground, sturdy shims should be placed under the
shaft. After lowering the cultivator, switching off the engine and applying
the handbrake, check the stability of the tractor-machine unit. Only typical
screws should be used to fix new components.
If machine components are disassembled several times, it is necessary to
inspect and possibly replace connecting elements such as bolts, washers or
nuts, excessive wear of which may lead to uncontrolled loosening of the
connecting elements and subsequent damage.
When working on extremely worn work tools, such work can cause, for example,
bearing damage in the case of a small disc diameter. Tools should be replaced
when their wear and tear exceeds the limits allowed by the manual. If the
recommendations are not followed, damage may occur for which the manufacturer
is NOT RESPONSIBLE!
Replacement of cylinders
A malfunctioning cylinder, leakage, etc. should be dismantled and taken to
a specialist workshop. Replacement of the cylinder must be carried out on an
unfolded machine. Connect the cylinder to the system and, when mounted on one
side, run through the entire cycle a couple of times to fill the cylinder
completely with oil. Failure to do so may result in a sudden fall of the drop
section.
The bearings of the levelling discs are not demountable. If damaged, they
should be replaced in their entirety.
NOTE! When carrying out repairs and maintenance, the machine should be
lowered to the ground and supported on supports to ensure full stability and
the tractor engine switched off. Use proper spanners and protective gloves
during maintenance and repairs.
Disassembly and disposal
A machine used in accordance with the instructions in this manual will last
for many years, but worn or damaged parts must be replaced. In the event of
emergency damage (cracks or deformation of the frames) impairing the quality
of the machine and posing a danger to further operation, the machine must be
disposed of.
The disassembly of the machine should be carried out by persons previously
gotten familiar with its construction. These operations should be carried out
after the machine has been set up on a level and stable surface. Sequence of
activities:
- Disconnect the shaft bracket from the arms. Remove the bearing mounting bolts and roll the shaft to one side.
- Disconnect the shaft arms from the frame.
- Remove the three-point hitch turret arms connecting to the main frame (for nonwelded three-point hitch).
- Remove the three-point hitch turret.
- Place the frame on stable stands. For units with folding side arms, additional stands must be prepared.
- Remove the working components of the unit.
- Detach the side arm supports from the mid frame.
- Disassembly of hydraulic components should be carried out wearing gloves and protective goggles. Wrap the connectors with oil cloth before unscrewing the bent wires. Drain the used oil into a container (bucket).
Store the machine securely supported on a hard surface to prevent injury to
people or animals.
NOTE Take all precautions when dismantling the machine by using operable
tools and personal protective equipment. Disassembled parts must be disposed
of in accordance with environmental protection requirements.
Spare parts for SPEC HD cultivator
To search, price and order genuine spare parts for MANDAM machines, please
visit our website at: www.mandam.com.pl, tab
“Parts”. On this page, we provide catalogues and spare parts sheets in PDF
format, containing up-to-date parts diagrams for each machine, together with
their numbers and prices.
Parts orders, or enquiries regarding them, can be made directly from this page
(tab: “contact/order”) or via e-mail:
parts@mandam.com.pl
The order should include the part numbers and quantities, as well as the
purchaser/payer’s details including a contact telephone number.
Parts are shipped directly to the address provided and payment is made on
delivery.
If you are not sure, please contact the Mandam spare parts department on the
following telephone numbers : +48 32-232-2660 ext. 39 or 45 or on the mobile
number +48 668-6622-89.
Original MANDAM spare parts are also available from all authorised MANDAM
machine distributors.
MANDAM Sp. z o.o.
44-100 Gliwice ul.Toruńska 14
e-mail mandam@mandam.com.pl
Phone: +48 32 232 26 60 Fax: 032 232 58 85
TIN: 648 000 16 74 REGON (statistical No.): P – 008173131
References
- Maszyny rolnicze, wały uprawowe - producent - MANDAM - Go farming!
- Maszyny rolnicze, wały uprawowe - producent - MANDAM - Go farming!
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