LEMKEN SMARAGD 7 User manual

Operating Instructions
Disc cultivator
Smaragd 7
- EN -
Safety is our concern!
Art.Nr. 175 1296
EN-2/08.03
LEMKEN GmbH & Co. KG
Weseler Straße 5, D-46519 Alpen / Postfach 11 60, D-46515 Alpen
Telefon [phone], Telefax (0 28 02) 81-220
eMail: [email protected], Internet: http://www.lemken.com

1
Dear customer!
We would like to thank you for the confidence in buying this implement.
The advantages of this implement will be shown, only, when operated and used
with due care and attention.
When handing over this implement your dealer has already instructed you with
regard to operation, adjustment and maintenance. But this short introduction
requires an additional detailed study of the instruction book.
Therefore read this instruction book carefully before the first use. Please pay
attention to the safety instructions mentioned in this instruction book.
Any changes and modifications carried out not being mentioned expressly in this
instruction book, may only be carried out with a written agreement of the
manufacturer.
Ordering spare-parts
When ordering spare-parts please state type and serial No. of the implement. This
information will be found on the identification plate.
Put down this data on the following table so that it is always available.
Type of implement:
No.:
Only use genuine Lemken spare-parts. Spurious parts negatively influence the
function of the implement, show a shorter lifetime and increase in nearly all cases
additional maintenance.
We trust that you will understand that LEMKEN unable to guarantee poor
operation and damage caused by using spurious parts!

2
DEFINED USE
•Read and adhere to these "General Health- and Safety precautions"
before putting the plough to work!
•The SMARAGD 7 has been designed purely for cultivation of
agricultural soil!
•Any use beyond the one stipulated above is no longer considered as
defined use. The manufacturer does not accept any responsibility for damages
resulting from this; the operator himself carries the full risk!
•Under "defined use" the manufacturer's prescribed operation-, maintenance-
and repair conditions are to be adhered to!
•The SMARAGD 7 may only be operated, maintained and repaired by such
persons who have been made acquainted with it and who have been advised
about the dangers!
•The applicable accident prevention advice as well as the generally accepted
safety technical, working, medical and road traffic rules should be adhered to!
•Any damages resulting from arbitrary changes on the machine rule out the
responsibility of the manufacturer!
CONTENTS
DEFINED USE........................................................................................................ 2
CONTENTS............................................................................................................ 2
1SAFETY INSTRUCTIONS................................................................................ 4
2WARNING STICKERS ..................................................................................... 6
2.1 General Instructions ................................................................................. 6
2.2 Meaning of the stickers ............................................................................ 6
2.3 Position of warning stickers .................................................................... 7
3REPARATION OF TRACTOR.......................................................................... 8
3.1 Tyres........................................................................................................... 8
3.2 Lift rods ...................................................................................................... 8
3.3 Check chains or sway blocks .................................................................. 8
3.4 Tractor hydraulics ..................................................................................... 8
3.5 Axle load .................................................................................................... 8

3
4ATTACHING AND DETACHING THE IMPLEMENT...................................... 10
4.1 Attaching to the tractor........................................................................... 10
4.2 Detaching from the tractor ..................................................................... 10
5THREE-POINT-LINKAGE .............................................................................. 11
5.1 General Instructions ............................................................................... 11
5.2 Vertical Adjustment of Drawbar............................................................. 11
5.3 Change of the Drawbar Position............................................................ 11
6SHARE POSITION ......................................................................................... 12
7DEPTH ADJUSTMENT OF THE TINES......................................................... 13
8DEPTH ADJUSTMENT OF THE DISCS ........................................................ 14
9ROLLERS....................................................................................................... 15
10 OUTER DISCS............................................................................................. 16
11 SHEARBOLTS ............................................................................................ 17
12 SMARAGD - WITH AUTOMATIC OVERLOAD SAFETY DEVICE ............. 18
13 MAINTENANCE........................................................................................... 19
14 TRANSPORT ON PUBLIC ROADS ............................................................ 19
15 WEIGHTS .................................................................................................... 20
16 NOISE, AIRBORNE SOUND ....................................................................... 20
17 NOTES......................................................................................................... 20
18 PRODUCT REGISTRATION / GUARANTEE.............................................. 20
EC Certificate of Conformity.............................................................................. 21

4
1 SAFETY INSTRUCTIONS
General Safety Instructions
•Before using the machine, always check both it and the tractor for
roadworthiness and operational safety!
•As well as the notes in these instructions the operator is advised to
comply with the generally applicable safety at work regulations and those
relating to use of the public highway!
•The implement may only be operated, maintained and repaired by such
persons who have been made acquainted with it and who have been advised
about the dangers!
•When driving on public roads with a raised machine the lifting control lever
should be locked against unintentional lowering!
•The fitted warning and advisory plates give important information for safe
operation; adhering to these increases your own security!
•When using public roads adhere to applicable traffic rules!
•The operator should familiarise him-/herself with all controls and their functions
before starting work. During work could be too late!
•The clothing of the operator should fit tight. Avoid wearing any loose clothing!
•To avoid danger of fire keep the implement clean!
•Before beginning to drive check surroundings area (children)!
•Sitting or standing on the implement during operation or during transport is not
permissible.
•Attach implements as advised and only to the stipulated positions!
•Special care should be taken when the implement is coupled to or uncoupled
from the tractor.
•When coupling or uncoupling the implement bring the supporting stands into
the corresponding position (standing safety)!
•Fit weights only to the fixing points provided for that purposes!
•Adhere to the maximum permissible axle loads, total weights and transport
width!
•Fit and check transport gear, road lights and warning guards!
•The release ropes for quick coupler latches should hang freely and in the
lowered position must not release the quick coupling by themselves.
•Never leave the driver's seat whilst in motion!
•Handling behaviour, steerability and braking are influenced by mounted imple-
ments, trailers and ballast weights. Check for sufficient steerability and braking!
•When driving round bends note the width of the machine and/or changing
centre of gravity of the implement.
•Put implement into operation only when all guards are fixed in position!
•Never stay or allow anyone to stay within the operating area!
•Never stay in the turning and slew area of the implement!
•Do not operate any hydraulic controls while anybody is in the operating area!

5
•On all pivoting parts actuated by power assistance (e.g. hydraulics) exists
danger of injury by bruising and crushing!
•Before leaving the tractor lower the machine to the ground. Apply the parking
brake, stop the engine and remove the ignition key!
•Do not allow anybody between the tractor and implement if the parking brakes
are not applied!
Attached implements
•Before mounting or dismounting implements on/from the three-point linkage,
move the raise / lower control to the position at which accidental raising or
lowering cannot take place!
•In the case of three-point linkage mounting, ensure that the tractor balls and
the mounting pins of the implement are of the same category!
•There is the risk of injury from pinch and shear points in the three-point linkage
area!
•When operating the external lift controls for the three-point linkage, do not
stand between the tractor and implement!
•Always ensure sufficient lateral limitation for the three-point linkage of the
tractor in the transport position of the implement!
•When driving on roads with the implement raised, the raise/lower control must
be locked to prevent lowering!
Maintenance
•Repair-, maintenance- and cleaning operations as well as adjustments and
remedy of function faults should principally be conducted with engine stopped
and brakes applied. Remove ignition key!
•Check and tighten nuts and bolts regularly!
•When conducting maintenance work on a lifted implement always place
suitable supports underneath!
•For replacing any tools with cutting edges always use suitable tools and
gloves!
•Dispose of old oils, grease and filters as prescribed by law.
•Before working on the electric gear disconnect battery cables!
•When conducting electrical welding operations on the tractor or on the
mounted implement remove cable from the generator and the battery!
•Any spare parts fitted must meet with the implement manufacturer's fixed
technical standards! This is for example ensured by using genuine spare parts!

6
2 WARNING STICKERS
2.1 General Instructions
The LEMKEN Smaragd is equipped with all features to ensure safe operation.
Where potential danger areas of the implement can not be fully safeguarded,
warning stickers are fitted which draw attention to these. Damaged, lost or
unreadable warning stickers must be replaced immediately. The stated numbers
are used as order numbers..
2.2 Meaning of the stickers
Familiarise with the meaning of the stickers. The following descriptions
inform about them in detail.
WARNING: Read and adhere to this Instruction book and these
"General Health- and Safety precautions", before putting
the implement to work!
390 0555
WARNING: Shut off engine and remove key before performing
maintenance or repair work!
390 0509

7
WARNING: Pinch Point!
390 0506
WARNING: Keep well clear of the working
and swinging area of the implement!
390 0510
2.3 Position of warning stickers

8
3 REPARATION OF TRACTOR
3.1 Tyres
Ensure that all tyres- especially the rear ones - are at identical pressure.
3.2 Lift rods
Adjust lift rods to equal length. Where there are alternative positions for the lift
rods on the lower links, use the rearmost position, in order to unload the tractor
hydraulics.
3.3 Check chains or sway blocks
It is essential that the check chains or sway blocks are adjusted so that the lower
links are free to move sideways when in working position.
3.4 Tractor hydraulics
During work the tractor hydraulics must be set to "floating position" or to "mixed
control".
3.5 Axle load
The attachment of implements to the front- and rear-three point
linkage must not lead to exceeding the allowed total weight, the
allowed axle load and the allowed tyre load of the tractor.
The tractor front axle must always be loaded with 20 % of the tractor
dead weight at minimum.

9
How to calculate the minimum front ballast and the increasing of the rear axle
load, is described in detail as follows:
GV= Weigth of front ballast (front implement)
TV= Front axle load of the tractor without mounted implement
TL= Tractor dead weight
TH= Rear axle load of the tractor without mounted implement
GH= Weight of the implement combination
Calculation of the minimum front ballast GV min:
Calculation of the increasing of the rear axle load:
Minimum axle load increasing
The calculation of the required minimum front ballast and the increasing of the
rear axle load requires that all above mentioned measurements and weights are
known. If they are unknown and cannot be found out, there will be only one way to
avoid overloads:
Please weigh your tractor with mounted and lifted implement to find out the
actual rear axle loading and front axle unloading and that in comparison
with the axle loads of the tractor without implement!

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4 ATTACHING AND DETACHING THE IMPLEMENT
4.1 Attaching to the tractor
−Set tractor hydraulics to "Position control".
−Attach tractor lower links to the drawbar
(1) and secure.
−Fit top link so that it raises towards the
implement when in working position.
−Secure top link (3) by means of spring clip
(4).
−If the disc cultivator ist equipped with
outer discs, they must be swung-in and
secured against swinging back when
public roads are used.
On the field - before starting work - the outer
discs must be swung-out and secured again.
4.2 Detaching from the tractor
Park the implement always on firm and level
ground; re-attachment will then be easier.
−Set tractor hydraulics to "Position control".
−Lower the implement and disconnect top link.
−Remove lower links from the drawbar (1).
−Detach electric supply-couplings if provided.
•Read and adhere to the General Safety Instructions as well as to
the Instructions 'Mounted implements'! See section 1!

11
5 THREE-POINT-LINKAGE
5.1 General Instructions
The mounting categories of the tractor and the implement must be compatible or
must be made compatible. If there is no correspondence, the three-point-linkage
of the tractor must be adapted or the drawbar (1) and the top link pin (3) of the
disc cultivator must be replaced by a corresponding version.
5.2 Vertical Adjustment of Drawbar
The drawbar (1) is vertically adjustable. In case the implement can not be lifted
sufficiently from the ground or too much tractor wheel slip will be experienced, the
drawbar must be fitted in the lower position. In case the penetration is insufficient,
the re-consolidation effect of the roller is insufficient or the tractor lift capacity is
insufficient, the drawbar must be fitted in the upper position.
5.3 Change of the Drawbar Position
If required, change the drawbar position as follows:
Loosen bolts (S) of clamp (SP), push clamp backwards, turn drawbar (1) with the
clamp by 180 °, push clamp in its previous position again and tighten bolts (S)
carefully. Use Loctite and tighten nuts to a torque of 150 Nm.
•The SMARAGD may only be operated, maintained and repaired by
such persons who have been made acquainted with it and who
have been advised about the dangers.
•When fitting the machine to the three-point linkage of the tractor
bring all control levers into such a position that unintended lifting or lowering is
impossible.
•There is danger of injury in the area of the three-point linkage by its squeezing
and shearing action.

12
6 SHARE POSITION
The share position of SMARAGD and
SMARAGD Ü can be altered. A flat share
position ensures an even seedbed depth
(point (5) and wings (6) work nearly at the
same depth) and reduces the traction
requirement; a steep share position
ensures a good penetration, even in hard
and dry soils. With the SMARAGD having a
shearbolt device, the tine position and thus
the share position will be altered by
repositioning the shearbolt (7).
Hole A = flat position (especially for heavy
sticky soils = easier to pull)
Hole B = steep position (especially for dry
and hard conditions = improved
penetration)
With the SMARAGD Ü, however, the share position will be altered by slackening
and by turning (180°) the eccentric bolt (8) having first removed shearbolt (7).
•Change the share angle position only with the implement lifted 2 -
3 cm only.
•Use only suitable spanners and tools.
•Repair-, maintenance- and cleaning operations as well as
adjustments and remedy of function faults should principally be conducted with
engine stopped and hand brake applied. Remove ignition key!

13
7 DEPTH ADJUSTMENT OF THE TINES
The tines respectively shares should be set
at a working depth of 8 - 12 cm; with greater
soil unevenness or deep wheel marks a
deeper cultivation depth may be required.
Adjust working depth of the tines after
raising the implement some cm by means of
the adjusting device (10) as follows:
Placing the lower pin (2) in a deeper hole =
increased working depth.
Placing the lower pin (2) in an upper hole =
reduced working depth.
The upper pins (12) located above the
carrier (13) are for obtaining enough
clearance between the ground and the tube-bar-roller, with the cultivator raised.
If with raised cultivator the tube-bar-roller (14) is still touching the ground or is too
close to the ground, then with fully lowered cultivator the pins (12) must be placed
in a lower hole above the carrier (13).
The length of the top link should be adjusted so that the frame (15) is nearly
parallel to the ground. Top link fitting depends on the required re-consolidation
effect of the tube-bar-roller.
•Read and adhere to the General Safety Instructions! See section 1!
•When adjusting the working depth, raise cultivator a few cm, only!

14
8 DEPTH ADJUSTMENT OF THE DISCS
The hollow discs (18) should be set at
approximate half working depth of the tines
(19). They should mix and for level the ridges
and grooves left by the rear tines. When
working too deep, new ridges and grooves
will be built, and when working too shallow,
the grooves and ridges left by the tines will
be levelled insufficiently.
An optimum depth adjustment is achieved
when the following tube-bar-roller (14) is
"filled" with soil throughout the total working
width.
If the roller area behind the disc units (20) is
filled with more soil than in the area between
the discs, the discs are working too shallow.
Conversely the disc units are working too
deep if the roller area between the discs is
filled with more soil than the area behind the
discs.
The working depth can be adjusted as follows:
−Take out securing clip and remove pin (21).
−Adjust discs (18) vertically.
−Re-fit pin (21) and secure.
After depth adjustment of the discs, an adjustment correction is not
required after altering the depth of the tines!
•Read and adhere to the General Safety Instructions!
•Adjust discs only with fully lowered machine.

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9 ROLLERS
The SMARAGD 7 can be equiped with a D400 or D540 tube bar roller. The re-
consolidation effect of the roller (14) can be influenced by setting the top link
steeper or more horizontal; in doing so the tractor hydraulics must be set to
"Floating position". If too much slippage is noticeable, set tractor hydraulics to
„Mixed Control“.
Following results can be achieved:
Steeply set top link = small re-consolidating effect,
less steeply set top link = medium re-consolidating effect,
approximately horizontal set top link = good re-consolidating effect.
If the tube-bar roller (14) is sinking too deep into the soil (in light and sandy soils)
and/or will not roll and the top link cannot be set still more steeply (i.e. higher at
the implement or lower at the tractor), then the pressure of the tube-bar roller can
be reduced by setting the tractor hydraulics to "Draft control" or "Mixed control".
For such soils also a roller of 540 mm diameter instead of the standard one of 400
mm diameter is recommended.
•Read and adhere to the General Safety Instructions!
•Change top link position with fully lowered cultivator, only!

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10 OUTER DISCS
The outer discs (25) will be bolted to the
frame (R) of the discs.
They should not work so deep as the inner
discs; their purpose is only to move the soil
which has been thrown beyond the
working width, into the grooves left by the
outer tines.
Working depth adjustment can be made by
means of pins (21). Secure pin (21) after
each adjustment.
For transport on public roads the outer
discs (25) must be folded inwards.
To do so, remove pin (27), fold outer disc
(25) inwards and fit pin (27) in hole (26)
and secure.
•Read and adhere to the General Safety Instructions!
•Do not drive on public roads with outer discs being in working
position (folded out)!

17
11 SHEARBOLTS
Each tine (19) and disc carrier is fitted with
a shearbolt (7) which will save cultivator,
tines and discs against overload.
Replace sheared bolt as follows:
a) Raise cultivator a few cm.
b) Remove all remains of the shearbolt (7).
c) Swing tine and/or disc carrier back into
position.
d) Fit new shearbolt into hole concerned
and tighten carefully.
Only shearbolts according to the schedule
below should be used. Otherwise there is a
serious risk of damage to frame, tine or disc carrier or a premature failure may be
experienced.
Tine Disc carrier
SMARAGD 7 301 7314 301 3240
M 10x55 B=13/10.9 M 10x45 B=10/8.8
SMARAGD 7 Ü 301 3870 301 3240
M 26x65 B=20/10.9 M 10x45 B=10/8.8
•Read and adhere to the General Safety Instructions!
•When changing shearbolts, use suitable tools, only!

18
12 SMARAGD - WITH AUTOMATIC OVERLOAD SAFETY DEVICE
The tines (19) of the SMARAGD 7 Ü
cultivator are equipped with an automatic
overload safety device with springs (35),
especially designed for stony soils. The
tines trip back upon impact and
automatically return to the working
position once the obstacle has been
passed. As an option, the discs can be
equipped with an automatic overload
safety device, too.
The cultivator is additionally protected by means of shearbolts (7). As additional
equipment the hollow discs can be equipped with a Non-Stop device.
•Read and adhere to the General Safety Instructions!
•Coil springs are under load!
•If a tripped tine will not swing back into its working position, the bolts
may be tightened too much. Slacken the bolts concerned but note
that the tine will swing back into its working position with its full power. Keep a
distance from the swinging and tripping area of the tines!