Ovlac MINI MEDIUM H/F Guide

1
2016
OPERATING INSTRUCIONS AND SPARE PARTS
MINI MEDIUM H/F

2
CONTENTS
1. Safety provisions.................................................. 3
2. Descriptions.......................................................... 5
3. “Varilabor” ............................................................ 6
4. Protection systems .............................................. 7
5. Set to work............................................................ 8
5.1 Moulboards .................................................. 8
5.2 Hitching to the tractor.................................. 8
5.3 Alignment..................................................... 9
5.4 Front furrow width ....................................... 9
5.5 Other adjustments ..................................... 10
6. Ploughing depth................................................ 11
7. Transport and parking........................................ 11
8. Maintenance........................................................ 12
9. Optional equipment............................................ 13
10. Spare parts.......................................................... 14
This handbook describes the use, maintenance instructions
and spare parts supplied for the indicated plough.
The farming implement known as “plough“ is designed to
work the soil, linked to a tractor with lift and universal 3-point
coupling.
Regular and satisfactory operation together with economic
and long lasting use of the implement depends on compliance
with the instructions given in this handbook. It is, therefore,
advisable to strictly comply with the following instructions in
order to prevent faults which could jeopardise the correct and
long-lasting operation of the implement.
Compliance with the instructions in this handbook is also
important
since the Manufacturer declines all and every
responsibility caused by negligence and failure to comply
with these instructions.
The Manufacturer shall, however, remain at the customer’s
disposal for immediate and thorough assistance together with
anything else that may be required in order to ensure the correct
operation and maximum efficiency of the implement. The
Manufacturer reserves the right to make any modifications and
improvements to the implement, as may be considered
opportune, without being obliged to immediately inform the user.

3
1. SAFETY PROVISIONS
1.-Comply with the instructions given by the danger signals exposed
in this handbook (Fig.1) and affixed to the plough itself.
2.-Operations and adjustments to the implement must always be
carried out when the engine is off and the tractor braked.
3.-It is absolutely forbidden to carry passengers or animals on the
plough.
4.-It is absolutely forbidden for persons without a driving license,
inexpert persons or those in precarious health conditions to drive the
tractor with the plough mounted.
5.-Strictly comply with all the recommended accident preventing
measures described in this handbook.
6.-Assembly of an implement on the tractor will shift the weights on
the axles.
7.-Before starting the tractor and plough, always check that all safety
devices guarding transport and use are in perfect conditions.
8.-The instructions labels affixed to the plough give useful advice on
how to prevent accidents.
9.-Always comply with the highway code in force in your country
when travelling on public roads.
10.-Comply with the maximum permissible weight on the axle of the
tractor, the total adjustable weight, transport regulations and the
highway code.
11.-
Always become familiar with the controls and their operation
before starting work.
12.-
Take the utmost care during the plough coupling and release
phases.
13.-Never ever leave the driving seat whilst the tractor is moving.
14.-
Remember that the road holding, steering and breaking capacity
may be notably influenced by the presence of a mounted implement.
15.-
It is absolutely forbidden to stand within the operative range of the
plough.
16.-
Before leaving the tractor, lower the mounted plough coupled to
the lift unit, stop the engine, engage the hand brake and remove the
ignition key from the control panel.
17.-
The category of the implement coupling pins must correspond to
that of the lift coupling.
18.-
Take care when working close to the lift links. This is a very
dangerous area.
19.-
It is absolutely forbidden to stand between the tractor and the
plough, to manoeuvre the outside lift control.
20.-
Set the control lever of the hydraulic lift to the locked position
during road transport with the plough mounted.
21.-
The spare parts must correspond to the requirements established
by the Manufacturer. Use only genuine spare parts.
22.-
The safety transfers must always be perfectly visible. They must
be kept clean and should be replaced if they become illegible.
Replacements are available on request from your local dealer.
23.-
The instruction manual must be kept for as long as the machine
lasts.

4
Fig.1
(Fig.1) WARNING
Thoroughly read the manual before starting to work
DANGER
Do not handle the plough when lifted, danger of flattening. Keep
safety distance.
DANGER
Damage can be caused by the rotation of the plough. Keep safety
distance.
Be prepared in case of emergency
Have near a first aid kit and an extinguisher. Write down the telephone
numbers of doctors, ambulances and firemen and keep them near the
telephone.
Use suitable clothes
Avoid loose clothes and use suitable equipment of security according to the
type of works. The safe handling of the machine requires all the attention of
the operator.
Don’t put on auricular to listen to the radio during the work with the
machine.

5
2. DESCRIPTION
1. HEADSTOCK
2. IDENTIFICATION PLATE
3. HYDRAULIC TURN
4. CROSS SHAFT
5. MOULBOARDS
6. SHARE
7. SHIN
8. HYDRAULIC SYSTEM
9. DEPTH CONTROL WHEEL
10. FRAME
11. BAME
REMARK:
The construction number that is
engraved in the identification plate must be
coincident with the number engraved on the
headstock support.
3
1
2
4
6
7
9
8
10
IDENTIFICATION PLATE (2)
5
11

6
3. VARILABOR
Working width can be set for models MF and
MH depending on different soil conditions in
3positions in steps of 5 cm ( 2” ). Positions 1 and 3
correspond to the minimum and maximum widths
respectively (Fig.2).
Fig.2

7
Fig.5
Fig.4
Fig.3
4. PROTECTION SYSTEMS
The Auto Reset protection systems work automatically. When
the share meets an obstacle the protection system pulls the beam
up (Fig. 3) thus avoiding the obstacle and returning to its original
position afterwards with no need to stop the tractor.
This way all the impacts produced by an uneven field are
absorbed by the protection system thus protecting all the elements
of the plough and of the tractor too.
For the same reason, the Auto Reset protections decrease
the traction effort by not making the tractor overcome every
eventual obstacle.
- SERIES MMF
: Protection is achieved by means of shear bolts
(Fig.4). When the share point meets an obstacle, the shear bolt
breaks and permits the beam to rotate around its bedding. To
continue the labour, restore the beam to its original position and
replace the shearbolt.
- SERIES MMH
: In order to adapt the plough to soil
hardness conditions, in the hydraulic models the release
pressure can be adjusted by means of injecting (light soils)
or removing (heavy soils) oil from the system This
operation is carried out from the cabin of the tractor by
means of the hydraulic tube with manometer supplied to
this effect (Fig. 5).
Note
: The Auto Reset systems from OVLAC are
adjusted at the works at an optimal pressure for average
conditions.

8
Fig.6
5. SET TO WORK
5.1 –MOULBOARDS
Before starting work, the paint on the mouldboards
should be removed to avoid that the soil remains
adhered.
5.2 –HITCHING TO THE TRACTOR
The OVLAC ploughs are designed to fit to the 3-point universal
coupling of any farming tractor.
The cross shaft can be supplied in two different lengths (centre
to centre):
Category II 900 mm.
Category III 1.000 mm.
The cross shaft must have the appropriate length to make the
drawing powers converge in the centre of the frontal axle, as shown
in (Fig. 6).

9
Fig.8
5.4–FRONT FURROW WIDTH
The width of the first furrow is adjusted by acting on the screw
C (Fig. 8), this moving the headstock laterally until all observations
in Fig.9 y 10 are applied.
Fig.7
Fig.9
Fig.10
5.3 –ALIGNMENT
The plough should always work in line with the tractor. If not, the
tractor will tend to leave the furrow course. Check that lengths A1=A2
(Fig. 6)
Crabbing is corrected automatically in OVLAC ploughs thanks to
their oscillating cross shaft. In ploughs with fix coupling, act on the
drifting-correction turnbuckle (hydraulic in option).
The third point should be linked so that the end linked to the
plough be slightly higher than the one linked to the tractor (Fig. 7)
The third point should always be placed in the oblong hole E (Fig.
7), trying that its length does not hinder it to move while working.
E

10
5.5 –OTHER ADJUSTMENT
The length of the third point should be adjusted so that the frame
works in a parallel position with respect to the field since, if not, the first
bodies would plough at a different depth than the rear ones achieving
an uneven labour (Fig. 11).
Fig.13
Fig.12
Fig.11
For the same reason, check that the beams work vertically to
the field (Fig.12). To achieve this, make sure that the lifting arms
of the tractor are at the same height and act on the adjusting bolts
A at the headstock (Fig.13).

11
Fig.14
Fig.15
6. PLOUGHING DEPTH
The ploughing depth is adjusted through the hydraulic lever of the
tractor. Nevertheless, obtain an even depth, all ploughs can be
equipped with a depth control wheel (Fig.14) whose height is adjusted
by the bolts.
There is a relation between depth and width which should be
respected in order to achieve a good result.
The following chart gives an excellent reference which, if complied,
will lead to satisfactory results.
7. TRANSPORT AND PARKING
In order to ease transport, the plough should be drawn to its
minimum width by means of the width control system (turnbuckle or
hydraulic cylinder). Long ploughs (4 and 5 furrows) can be equipped
with a multi-purpose wheel: depth control and transport.
The stand (fig.15) guarantees a steady position when the plough is
parked.

12
8. MAINTENANCE
Retighten all bolts and nuts after the first 8 hours of work, specially
the ones of mouldboards, shares and points. Henceforth, check every 100
hours of work. When putting the plough away, clean and grease
thoroughly the mouldboards to prevent from rusting.
Lubrication: grease the greaser.
Safe maintenance
Be used to the maintenance procedures before carrying out the
works. The working zone must be clean and dry. Don’t carry out any work
of lubrication, repair or adjust with the motor enabled. Keep the hands,
feet and clothes always far from movable components. Turn all the
controls off, to alleviate the pressure. All the components must be in good
state and correctly installed. Repair damages immediately. Change any
worn away or broken pieces. Maintain all the components of the machine
clean of fat, oil and accumulated dirt. Because of being dragged
equipment, disconnect the cable groups of the tractor before making
works of weld in the machine.
Take care of the leaks of high pressure
The fluids that escape of the system can have as much force that
they can penetrate the skin, causing serious injuries. Therefore, it is
essential to leave the system without pressure before relaxing or
disconnecting any pipe and make sure that all the connections and the
hydraulic parts they are well tight before applying pressure to the system.
In order to locate a hydraulic oil leak, use a piece of cardboard that is put
on the connections. Do not approach the hands and the body to a leak of
high pressure. If, in spite of this precaution, it happens an accident, go
immediately to a doctor who should eliminate surgically the fluid within few
hours to avoid gangrene. The doctors who do not have experience in
dealing with these type injuries can go to a specialized medical centre.
Storage of the hydraulic sleeves.
IMPORTANT:
maintain the plugs clean. The abrasive particles, like
the sand or the metallic shaving, can damage the oil seals, shirts and
cylinders, causing internal leaks. Once disconnected of the tractor, make
sure that they are not in contact with the ground

13
9. OPTIONAL EQUIPMENT
The ploughs Ovlac may be equipped with:
8.1 Cover Boards (Fig.16).
8.2 Lanslide extension (Fig.17).
8.3 Hydraulic width first furrow adjustment (Fig.18)
8.4 Transport wheel (Fig.19).
8.5 Headstock lock for transport (Fig.20).
Fig. 16
Fig. 17
Fig. 18
Fig. 20
Fig. 19

14
CONTENT
HEADSTOCK 120................................................................. 15
HEADSTOCK 150................................................................. 17
FRAME SUPPORT 120 ........................................................ 19
FRAME SUPPORT 150 ........................................................ 21
TURN 120 ............................................................................. 23
TURN 150 ............................................................................. 24
MEMORY 120 ....................................................................... 25
MEMORY 180 ....................................................................... 27
FRAME MMH........................................................................ 29
MODULE MMH ..................................................................... 31
BODY MMH .......................................................................... 32
COVER BOARDS................................................................. 35
SKIM BOARDS..................................................................... 36
LANDSLIDE EXTENSION .................................................... 38
HYDRAULIC SYSTEM.......................................................... 39
HYDRAULIC TUBE OF LOAD.............................................. 46
HYDRAULIC WIDTH FIRST FURROW ADJUSTMENT....... 47
WHEEL ................................................................................. 49
HEADSTOCK LOCK FOR TRANSPORT ............................ 63
10. SPARE PARTS
Spare parts should always be ordered from your dealer and should
always include the following indications:
- Type, model and serial number of the plough.
These data are
punched on the identification plate with which every plough is equipped.
- Code number of the required spare part.
This will be found in the
attached spare parts list.
- Description of the part and required quantity.
- Means of delivery
. Transport expenses shall always be at the
consignor's charge.
- NOTE: The terms Right and Left
indicated on the descriptions, refer to
the plough when viewed from the rear. The spare parts components of
waste equipment, as shares, mouldboards, etc., are considered right if
they are mounted on a body which spills the soil to the right side and
viceversa.
- Note about the warranty
: The orders of spare parts in warranty should
always be clearly specified.
The Manufacturer will always sentence if
the spare parts are warranted in their replacement.
- Moreover, the warranty is suppressed if:
- The plough is repaired without authorisation from the
Manufacturer, or spurious spare parts, and inadequate bolts are
mounted.
-
The plough has been used beyond the specified power limit, or
anomalous manoeuvres and operations have been made.

HEADSTOCK 120
15

REFERENCIA DESCRIPCIÓN REFERENCIA DESCRIPCIÓN
15001098 LLAVE 32-38 62000004 PASADOR ANILLA 10 ZINC.
15008990 EJE CABEZAL 120 (D/06) 62000030 PASADOR ELAST.DIN-1481 10* 80 ZINC.
15010901 TUERCA EJE CABEZAL 120 (D/06) 62000037 PASADOR ANILLA 4,5 ZINC.
53000004 ENGRASADOR AC° DIN-71412 8*125 63000073 RODAM.ANTER.30218 F (C-120/D-03)
53000369 SOPORTE LATIG.TORRETA 2 HUECOS ZINC. 63000074 RODAM.POST.32021 XF (C-120/D-03)
53000450 JUNTA TORICA 160-3 90003901 BALANC.50mm.CAT-II
60000043 TORN.EXAG.DIN-931 8* 55 8.8 ZINC. 90006900 BULON D=28*130mm.BALANC.CAT.II ZINC.
60000084 TORN.EXAG.DIN-931 16*100 8.8 90006905 BULON D=36/28*140mm.BALANC.CAT.III ZINC.
60000131 TUER.AUTO.DIN-980 8 8.8 ZINC. 90007900 HUSILLO TOPE 185mm.
60000140 TUER.AUTO.DIN-980 10 8.8 ZINC. 90075902 BULON D=25*110mm.3er.PTO.CAT.II ZINC.
60000143 TUER.AUTO.DIN-980 16 8.8 ZINC. 90095900 MANILLA TOPE ZINC.
60000218 TORN.ALLEN DIN-913 12* 16 12.9 95001901 CABEZAL 120 (D/O4)
60000339 TORN.EXAG.DIN-933 10* 30 8.8 ZINC. 95008901 BULON D=29,6*123mm.INF.VOLTEO 110(D/07)/120
61000006 ANILLO ELASTICO DIN-471 35 95009901 ARAND.POST.120 (D/03)
61000031 ARAND.STANDAR S/BISEL CL-26 ZINC.(50x27x3) 95011920 CONTRATUERCA EJE CABEZAL 110 (D-07)/120/150
HEADSTOCK 120
16

HEADSTOCK 150
17

HEADSTOCK 150
REFERENCIA DESCRIPCIÓN REFERENCIA DESCRIPCIÓN
15008933 EJE CABEZAL 150 TRATADO (D/06) 62000004 PASADOR ANILLA 10 ZINC.
15010930 TUERCA EJE CABEZAL 150 (D/06) 62000030 PASADOR ELAST.DIN-1481 10* 80 ZINC.
53000004 ENGRASADOR AC° DIN-71412 8*125 62000037 PASADOR ANILLA 4,5 ZINC.
53000447 JUNTA TORICA 200-3 NBR (9-851) 63000075 RODAM.POST.32026 F (C-150)
60000043 TORN.EXAG.DIN-931 8* 55 8.8 ZINC. 63000076 RODAM.ANTER.30222 F (C-150)
60000084 TORN.EXAG.DIN-931 16*100 8.8 90003923 BALANC.50mm.PENTAS.CAT.III
60000131 TUER.AUTO.DIN-980 8 8.8 ZINC. 90004900 SEP.B.P.32/20* 52mm.
60000140 TUER.AUTO.DIN-980 10 8.8 ZINC. 90004906 CASQ.D= 45/20,5*52mm.SEP.BALANC.PENTAS.
60000143 TUER.AUTO.DIN-980 16 8.8 ZINC. 90007900 HUSILLO TOPE 185mm.
60000146 TUER.AUTO.DIN-980 20 10.9 ZINC. 95001931 CABEZAL 150 (D/04)
60000218 TORN.ALLEN DIN-913 12* 16 12.9 95002920 PLACA PORTABALANC.50mm.PENTAS.(D/02)
60000339 TORN.EXAG.DIN-933 10* 30 8.8 ZINC. 95008921 BULON D=34,6*150mm.INF.VOLTEO PENT.(D/02)
60000474 TORN.EXAG.DIN-931 20*110 12.9 95009931 ARAND.POST.150
61000033 ANILLO ELASTICO DIN-471 40 95011920 CONTRATUERCA EJE CABEZAL 110 (D-07)/120/150
61000036 ARAND.ESTANDAR-A 32 ZINC.
18

SUPPORT FRAME 120
19

SUPPORT FRAME 120
20
REFERENCIA DESCRIPCIÓN REFERENCIA DESCRIPCIÓN
15018900 SOP.BAST.INTERIOR SN-120 62000030 PASADOR ELAST.DIN-1481 10* 80 ZINC.
15018903 BULON D=34,6*215mm.TENSOR ANTER.SN + DACROMET 65000022 MUELLE TRACCIÓN 225/175*26*5 EECC 195mm
15023911 CASQ.GIRO BAST.SN-120 C/VARILLAS 80041900 SEP.B.P.51/36* 35mm.ZINC.C/TAL.
53000004 ENGRASADOR AC° DIN-71412 8*125 95011920 CONTRATUERCA EJE CABEZAL 110 (D-07)/120/150
60000100 TORN.EXAG.DIN-931 20* 70 8.8 95012900 TUERCA AJUSTE BASTIDOR EJE 120/150
60000102 TORN.EXAG.DIN-931 20* 80 8.8 95013902 SOP.PEON MF/H
60000146 TUER.AUTO.DIN-980 20 10.9 ZINC. 95016900 HUSILLO AJUSTE BASTIDOR 600mm
60000210 TUER.AUTO.DIN-985 1" SAE 8.8 95018901 PLACA SUP.SOP.BASTIDOR 120
60000222 TORN.EXAG.DIN-931/933 14* 40 8.8 95018902 PLACA INF.SOP.BASTIDOR 120
60000223 TUER.AUTO.DIN-980 14 8.8 ZINC. 95025910 BULON D=50*322mm.GIRO BAST.S (D/03)
60000228 TORN.ALLEN DIN-7991 20* 70 12.9 95026900 ARAND.P/BULON GIRO BASTIDOR
60000281 TORN.ALLEN DIN-913 12* 14 12.9 95070900 CASQ.D= 60/50*70mm.CEM.ARTIC.SS/GIRO BAST.
61000011 ARAND.DIN-125 20 ZINC. 95089910 PEON REVERSIBLE D/70cm.SL (D/07)
62000015 PASADOR ELAST.DIN-1481 8* 80 ZINC. 99040901 SEP.B.P.51/36* 30mm.ZINC.
62000016 PASADOR ELAST.DIN-1481 10* 50 ZINC. 99040901 SEP.B.P.51/36* 30mm.ZINC.