Pottinger SERVO III ON-LAND Operating instructions

Brand: Pottinger

Model: SERVO III ON-LAND

Type: Operating instructions

This manual is also suitable for

Operator's manual

+ INSTRUCTIONS FOR PRODUCT DELIVERY . . . Page 3

Nr. 99 950.GB.806.0

Ihre / Your / Votre • Masch.Nr. • Fgst.Ident.Nr.

SERVO III Onland

Turnover Plough

ALLG./BA SEITE 2 / 9300-GB

Important information concerning

Product Liability.

According to the laws governing product liability, the manufacturer and

dealer are obliged to hand the operating manual to the customer at the time

of sale, and to instruct them in the recommended operating, safety, and

maintenance regulations. Confirmation is necessary to prove that the

machine and operating manual have been handed over accordingly.

For this purpose,

-document A is to be signed and sent to Pöttinger,

-document B remains with the dealer supplying the machine,

- and the customer receives document C.

In accordance with the laws of product liability, every farmer is an

entrepreneur.

According to the laws of product liability, property damage is damage

caused by a machine and not to it. An excess of Euro 500 is provided for

such a liabilioty.

In accordance with the laws of product liability, entrepreneurial property

damages are excluded from the liability.

Attention! Should the customer resell the machine at a later date, the

operating manual must be given to the new owner who must then be

instructed in the recommended regulations referred to herein.

GB Dear Farmer

You have just made an excellent choice.

Naturally we are very happy and wish to

congratulate you for having chosen Pöttinger.

As your agricultural partner, we offer you quality

and efficiency combined with reliable servicing.

In order to assess the spare-parts demand for

our agricultural machines and to take these

demands into consideration when developing

new machines, we would ask you to provide us

with some details.

Furthermore, we will also be able to inform you

of new developments.

Dokument D

GB-0100 Dokum D Servo

- 3 -

ALOIS PÖTTINGER Maschinenfabrik GmbH

A-4710 Grieskirchen

Tel. (07248) 600 -0

Telefax (07248) 600-511

GEBR. PÖTTINGER GMBH

D-86899 Landsberg/Lech, Spöttinger-Straße 24

Telefon (0 81 91) 92 99-111 / 112

Telefax (0 81 91) 92 99-188

GEBR. PÖTTINGER GMBH

Servicezentrum

D-86899 Landsberg/Lech, Spöttinger-Straße 24

Telefon (0 81 91) 92 99-130 / 231

Telefax (0 81 91) 59 656

❑Check SERVO Turnover Plough as per the delivery docket. Check that delivery is complete. All safety equipment

and operating devices at hand.

❑Using the operating manual explain and go over the operation, initial start and maintenance of the machine or

implement with the customer.

❑Fitting to the tractor has been carried out.

❑Check that hydraulic connections to the tractor have been made and that they are correct.

❑Hydraulic functions (turnover, cutting width adjustment) have been demonstrated and explained.

❑Plough is set correctly to the tractor (cutting width of 1st component, drawing point).

❑Transport and working positions have been explained.

❑Information about optional and additional equipment has been given.

❑It has been pointed out that to read the operating manual is imperative.

Cross where applicable. X

In accordance with Product Liability obligations, we would ask you to please check the following points.

INSTRUCTIONS FOR

PRODUCT DELIVERY

In order to prove that the machine and the operating manual have been properly delivered, a confirmation is necessary.

For this purpose please do the following:

- sign the document A and send it to the company Pöttinger

(in case of Landsberg equipment: to the company Landsberg)

-document B stays with the specialist factory delivering the machine.

document C stays with the customer.

Contents

- 4 -

950.GB.806.0 INHALT

Contents

Preparations on the tractor ......................................................................... 5

Hydraulic control on the lifting gear ............................................................. 5

Hydraulic connection ................................................................................... 6

Preparations on the plough ......................................................................... 6

Attaching to the tractor ................................................................................ 7

Road transportation .................................................................................... 7

Removal from tractor .................................................................................. 7

Garaging, cleaning and winter storage of the implement ............................ 7

ON-LAND Ploughing ................................................................................... 8

What does "ON-LAND-Ploughing" mean? .................................................. 8

Advantages of an "ON-LAND-Plough" ........................................................ 8

Converting to conventional ploughing ......................................................... 8

Converting to "ON-LAND" ploughing .......................................................... 8

Conventional ploughing .............................................................................. 8

Ploughing with wheels in the furrows .......................................................... 8

Setting the plough to the tractor using "Servomatic" ................................... 9

1.Set furrow width ....................................................................................... 9

2. Furrow width setting of the first ploughing component (backfurrow) ....... 9

3.Setting the drawing point (Z) .................................................................... 9

Turning the plough over ............................................................................ 10

Turning procedure ..................................................................................... 10

Setting the plough gradient (11) ................................................................ 10

Ploughing with hydraulic control ................................................................ 11

Pinning the upper link ................................................................................ 11

Shear bolts ................................................................................................ 12

General maintenance advice .................................................................... 13

Cleaning the machine parts ...................................................................... 13

Parking in the open ................................................................................... 13

Winter storage ........................................................................................... 13

Hydraulic unit ........................................................................................... 13

Setting the ploughing component tilt ......................................................... 14

Basic setting of the ploughing component ................................................ 14

Setting the disk coulter (* .......................................................................... 15

Spring loaded disk coulter (* ..................................................................... 15

Pre-ploughing implements: ....................................................................... 15

Double feeler wheel .................................................................................. 16

Transport-Feeler wheel ............................................................................. 17

Changing to working position .................................................................... 17

Changing to transport position .................................................................. 17

Extension arm with hydraulic releasing device for packer and trailing

implements ................................................................................................ 18

Working with a trailing implement ............................................................. 18

Fully automatic „Nonstop“ overload safety ................................................ 19

Setting range ............................................................................................. 19

Gas accumulator (43): .............................................................................. 20

Altering pressure in the gas accumulator .................................................. 20

Take note .................................................................................................. 20

Technical Data .......................................................................................... 21

Defined use of the plough according to the manufacturer’s instructions .. 21

Vehicle Identification Plate ........................................................................ 21

Optional Equipment .................................................................................. 22

Plough body forms .................................................................................... 23

Supplement ............................................................................................... 24

Recommendations for work safety ............................................................ 26

Meaning of warning signs ......................................................................... 29

Important! Additional Information .............................................................. 30

Combination of tractor and mounted implement ....................................... 30

(950) ANBAU 9600-GB

ATTACHING TO THE TRACTOR

- 5 -

20%

Preparations on the tractor

General

Please observe the power range limits of the tractor being used.

Wheels

- Air pressure in the tractor’s rear tyres when ploughing should be 0.8 bar.

- Under difficult operating conditions additional wheel weights can be

advantageous. See the tractor manufacturer’s operating manual also.

Ballast weight

Sufficient ballast weights are to be stacked on the front of

the tractor in order to guarantee steering and braking

capabilities.

At least 20% of the tractor’s tare weight on the front axle.

Lifting gear

- Left and right lifting struts (4) must be of equal length.

Adjust using adjusting device (3).

- If the lifting struts on the lower link can be pinned variously, then select the

back position (H). In so doing the tractor’s hydraulic unit will not be heavily

loaded.

- Position (2) the upper link (1) according to the tractor manufacturer’s

information.

Setting-up for transportation

- Fix the lower link with the struts (5) so that the attached implement cannot

swing out during transportation.

- The hydraulic’s operating lever must be secured against lowering.

- Do not transport in the „ON-LAND“ position

Setting-up for ploughing

- Set the struts (5) so that the greatest possible sideways swing range exists.

Hydraulic control on the lifting gear

Control position:

For mounting and dismounting the implement and for transportation.

The control position is the normal setting for the lifting gear hydraulics.

The mounted implement remains at the height (= position) set by the servo-

valve (ST).

Pull control, mix control:

Ploughing occurs with of one of the two operating modes. See chapter

„OPERATION“ for description.

(950) ANBAU 9600-GB

ATTACHING TO THE TRACTOR

- 6 -

TD65/92/30

Kat. III = 965 mm

Kat. II = 825 mm

Kat. II

ø 28 mm

Kat. III

ø 36,6 mm

TD65/92/28

Hydraulic connection

Double-action control unit

- Connect pressure line (1) and oil return line (2).

Preparations on the plough

Lifting lugs

Select the lifting lugs for the implement to be attached which correspond

to the hook-up size (category II or III) of the tractor’s lifting gear.

Changing lifting lug

- Knock clamping sleeve (2) out.

- Remove lifting lug

- Position required lifting lugs (o 28mm or 36.6mm) outwardly.

- Set required measurement and resecure lifting lug with clamping

sleeve (2) in the respective boring.

Cat. II = 825mm

Cat. III = 965 mm

Upper link pins

- Insert safety cord (6) in the unused boring.

2TD65/92/29

(950) ANBAU 9600-GB

ATTACHING TO THE TRACTOR

- 7 -

TD65/92/27

1P1

Parking stand

- Using the control lever (8), release

parking stand, swing up and back

and lay in the clamp (9).

Road transportation

• Only to be carried out in the "CONVENTIONAL" position, not in the

"ON-LAND" position.

- "ON-LAND" and "CONVENTIONAL" see chapter "Operation"

Lighting and Warning equipment

When travelling in fog, half-light or at night, protruding parts are to be

clearly indicated. Advice on the application of warning signs, reflective

film or paint and lighting units can be found in the instructions for

ancillary equipment in

supplement C.

PôTTINGER can supply

lighting units and warning

signs upon request.

Always observe the

statutory regulations.

Removal from tractor

- Turn plough to working position and stand the implement on firm,

even ground.

- Move the control lever (ST) back

and forth several times to reduce

pressure in the hydraulic lines.

- Switch tractor’s hydraulics to

control position.

- Disconnect hydraulic hoses

from tractor.

- Using the control lever (8),

release parking stand, swing down and secure.

- Detach upper and lower links from implement.

Garaging, cleaning and winter storage of the

implement

• Observe the points in the chapter „MAINTENANCE AND SERVICE“!

TD65/92/31

Attaching to the tractor

- Switch tractor’s hydraulics to control position.

- Attach implement to lower link and secure with linch pin.

Note

The attaching frame can be positioned horizontally by turning the tilt

spindle (11).

Doing this enables an easier coupling to the lower link.

Then turn the tilt spindle (11) back. See chapter „OPERATION“ also.

Pin upper link (1)

- Pin upper link (1) so that the attachment point (P1) on the plough

during operation is somewhat higher than the attachment point (P2)

on the tractor.

Securing lower link

If the tractor’s hydraulic control is

to be steered over the lower link,

then the upper link should be

positioned in the slot (LL) on the

attaching frame.

Securing upper link

If the tractor’s hydraulic control is

to be triggered over the upper link,

then both the (RL) borings on the attaching frame are to be used.

- Couple hydraulic hoses to the tractor.

(950) 9600-GB EINSATZ

OPERATION

- 8 -

TD 19/96/2

TD 19/96/1

ON-LAND Ploughing

What does "ON-LAND-Ploughing" mean?

• No tractor wheels in the furrows

- All wheels travel on unploughed ground.

Advantages of an "ON-LAND-Plough"

•Ground care with "ON-LAND" ploughing.

No tractor wheels in furrows to compress and knead the ground.

Less tractor wheel slippage as with conventional ploughing in wet

conditions.

•Greater swing range

This makes even travelling on unploughed ground with dual

wheels possible.

•Boundary ploughing possibility

To swing the plough away from ground already ploughed (antiON-

LAND position). This enables accurate ploughing right up to a

boundary.

•Conventional Ploughing

The plough can be centred behind the tractor = conventional

ploughing with wheels in the furrows.

Conventional ploughing

Ploughing with wheels in the furrows

Swing plough to behind centre of tractor using hyraulics.

Converting to conventional ploughing

Safety points

• Conversion to be carried on firm level ground only

• Do not enter the area underneath a raised plough

• When converting stay off the raised plough

1. Raise plough slightly

- use tractor's lifting gear

2. Pin spindle in (KP) position

- secure bolt with linch pin

3. Re-set drawing point (ZP)

- see next page

Converting to "ON-LAND" ploughing

Safety points

• Conversion to be carried on firm level ground only

• Do not enter the area underneath a raised plough

• When converting stay off the raised plough

1. Raise plough slightly

- use tractor's lifting gear

2. Pin spindle in (OP) position

- secure bolt with linch pin

3. Re-set drawing point (ZP)

- see next page

KP = conventional ploughing

OP = "ON-LAND" ploughing

TD 83/96/1

KP OP

(950) 9600-GB EINSATZ

OPERATION

- 9 -

TD 83/96/2

Setting the plough to the tractor using

"SERVOMATIC"

„SERVOMATIC“ enables the optimum adaption of plough to tractor.

The following setting controls should be carried out in order.

Safety advice:

• Never reach into the area where danger of crushing exists

as long as parts are still moving.

• Do not stand in the swinging range of the implement.

1. Set furrow width

The standard model plough (SERVO) offers a choice of 4 furrow

widths. The furrow width is set by swinging the anchoring console.

- Loosen front hexagonal screw (SK) .

- Remove rear hexagonal screw.

- Swivel anchoring console until desired furrow width is obtained and

hexagonal screw fits in one of the holes (1, 2, 3, 4).

- Retighten hexagonal screws.

2. Furrow width setting of the first ploughing component

(backfurrow)

The furrow width (S2) of the first ploughing component is set by turning

the spindle (VF).

Furrow width (S1) to narrow

- turn spindle (VF) longer

Furrow width (S2) to wide

- turn spindle (VF) shorter

Furrow width (S2) correct

- Spindle is correctly set according to table.

See chapter

"PRESETTING THE PLOUGH“

Incorrect setting

The drawing line does not run through the mid-point of the tractor’s rear

axle. Tractor is drawn into already ploughed area during ploughing. This

can only be compensated by steering in the opposite direction.

Remedy

- Draw cylinder (ZP) out until drawing line (ZL) runs through the

midpoint (M).

3. Setting the drawing point (Z)

Correct setting

The drawing line (ZL) runs through the mid-point (M) of the

tractor’s rear axle. No side pull arises from the tractor.

The plough is easy to pull.

- Cylinder (ZP) is set according to the table.

(950) 9600-GB EINSATZ

OPERATION

- 10 -

Turning the plough over

Beware!

• Nobody is to stand within the swinging range during turning.

• Turning procedure is only to be actuated from the tractor cabin.

• The plough must be completely raised to turn.

Turning procedure

The turning procedure is carried out by a double-action control unit.

- Switch control unit (ST) to lift (h).

The plough is turned 180¯.

- Switch control unit (ST) to neutral (O).

After some 5 seconds another turning procedure can be effected.

Setting the plough gradient (11)

The plough should sit as vertical (90°) as possible to the ground

during ploughing. This position is obtained by turning both spindles

(11) as described below.

- Lift plough 5 - 10 cm

- Actuate control unit (ST) briefly.

The plough turns slightly away from the stop spindle (11).

- Set the gradient using the spindle (11).

- Turn plough back to stop again.

- Proceed with ploughing and check whether the plough sits more

vertically (90°) to the ground through the new setting.

TD 65/92/25

90°

TD 65/92/48

(950) 9600-GB EINSATZ

OPERATION

- 11 -

Ploughing with hydraulic control

So that the hydraulic control functions properly, the

following must be observed.

- Position upper link (1) so that the attachment point

(P1) on the plough during operation is somewhat

higher than the attachment point (P2) on the tractor.

TD65/92/27

Pinning the upper link

LL,RL = Pinning position for securing lower link

RL = Pinning position for securing upper link

See chapter „ATTACHING TO THE TRACTOR“ also.

Setting the upper link

- During operation the plough should lie lengthwise as parallel as possible to the ground

surface.

- The working depth is set with the lifting gear via the servo-valve firstly.

Depending upon the hydraulic control model, varying ground resistance when ploughing is

passed on to the control servo-valve via the upper link (1) or both the lower links. The relevant

impulse is then converted causing the lifting gear to lift or lower.

An example: Securing upper link

The plough penetrates deeper into the ground.

This causes the pressure on the control servo-valve via the upper link to become greater.

As a consequence, the control valve remains switched to lift until the set working depth is

reached again.

Note:

Follow the tractor manufacturer’s operating manual also.

(943) 9200 GB SICHERUNG

OVERLOAD SAFETY

- 12 -

Shear bolts

The ploughing components are fastened with shear bolts.

When overloaded the shear bolts break (30) and the ploughing component swings away and up.

- Remove the rest of the shear bolt.

- Loosen hexagonal bolt (31).

- Swing ploughing component back into the working position.

- Insert new shear screws and retighten both bolts.

Take note!

Only use genuine shear bolts (see spare parts list) with the corresponding dimension and quality. Under no

circumstances use bolts with greater or lesser strength.

(950) 9600-GB WARTUNG

MAINTENANCE AND SRVICE

- 13 -

General maintenance advice

In order to keep the implement in good condition even after a long

service life, please observe the following points:

Safety hints:

• Turn engine off when adjustment, service and repair work is to

be done.

• Do not work under the machine without safe support.

- Retighten all screws after the first hours of operation.

During operating time

- Check all screws occasionally and retighten if necessary.

- Grease the four greasing points on both of the swing bolts weekly.

- Grease all other greasing points at least twice per season.

At the same time oil joints and adjusting spindles also.

Expendable parts

- Replace worn out expendable parts in time to prevent all stress-

bearing parts from becoming damaged.

Tyre pressure

- Pay attention to the correct tyre pressure!

Check tyre pressure regularly!

• Danger of bursting exist when inflating or when tyre

pressure is too great!

Cleaning the machine parts

Take note!

Do not use a high

pressure cleaner to

clean bearings or

hydraulic parts.

- Danger of rust formation!

- Lubricate the machine after

cleaning and carry out a

short trial run.

- Cleaning with too much pressure can damage the paintwork.

Parking in the open

When parking in the open for

longer periods, clean plunger rods

and then grease.

Winter storage

- Thoroughly clean the machine

before storing.

- Store the machine where it is

weather protected.

- Protect exposed parts against rusting.

- Grease all greasing points

Hydraulic unit

- Check hydraulic hoses regularly for damage.

Immediately replace porous or damaged hydraulic hoses.

Beware: Danger of infection! Where there are dfects in the hydraulic

unit, do not touch areas of leakage.

Before working on the hydraulic unit

- lower implement to the ground.

- When carrying out maintenance work on a raised implement always

make it secure with a suitable support.

- Depressurize the hydraulic unit and turn the motor off.

FETT

TD49/93/2

TD55/93/22

FETT

(950) 9600-GB WARTUNG

MAINTENANCE AND SRVICE

- 14 -

Basic setting of the ploughing component

Checks must be made in the following order after replacing worn out parts:

1. Stand the plough on even ground.

2. The gap (A) between plough and blade cutting edege must be the same for all ploughing components.

3. Check the gap (B1) on the last ploughing component.

B1 =0 - 5 mm for ploughing components* of the type W, UWS

5 - 8 mm for ploughing components* of the type UW, UWS, WSS

4. Set the same measurement for gap (B) as for B1.

* The type of ploughing component is shown clearly on the manufacturer’s plate.

Setting the ploughing component tilt

If the plough is not penetrating the ground correctly, an improvement

can be obtained by turning the eccentric bush.

• The blade point in the area „S“ is set either higher or lower depending

upon the position of the eccentric bush (A or B).

• Retighten screws after resetting.

On some models a catch plate is fitted instead of an eccentric

bush.

See

"Basic setting of the ploughing component"

also.

(943) 9500 GB ZUSÄTZE

ADDITIONAL DEVICES

- 15 -

(* Beware! Danger of injury on the cutting edges.

Setting the disk coulter

• Set the cutting depth of the disk coulter at a gap of 5 cm to the

ploughing blade tip.

• The lengthwise fitting position is preselected by moving the carrier on

the console.

Further fitting positions arise by swivelling the eccentric (50) 180°.

• The lateral gap to the

ploughing blade tip

should be 2 - 3 cm. It

is set by swiveling the

eccentric (50).

Spring loaded disk coulter

- This disk coulter can be fitted to all SERVO NOVA ploughs with a

frame height from 72 cm.

Pre-ploughing implements:

Maize skimmer, Manure skimmer

These implements are designed to incorporate surface trash

straw or manure in the soil.

• Set the working depth to 1/3 of the total working depth.

• The lengthwise fitting position should lie over or behind the

ploughing blade tip. Where there is a lot of surface growth, or

when ploughing in straw, the pre-ploughing implements should

be set back as far as possible.

Leg deflector (60)

Leg deflector, which are fitted to the ploughing

component, serve to bend the stalks less

when ploughing in straw enabling them to slide

off better.

Trashboards (61)

For ploughing in manure or other fertilizers.

• Trashboards for ploughing components of the

type UW, W, WSS.

These implements can be used instead of

manure mulchers (see above) but are not very

effective with shallow working depths.

Knife coulter (62)

This implement can be used instead of a disk

coulter (see above) however it is not adjustable.

(950) 9600-GB DOPPELTASTRAD

FEELER WHEELS

- 16 -

Double feeler wheel

• The double feeler wheel is fitted to the last ploughing component.

• The working depth is set via the spindle (70)

using the accompanying ratchet.

• When ploughing with a 4 blade plough the

double feeler wheel can be fitted to the

second last ploughing component. This has

the advantage that when ploughing along

the boundary the feeler wheel does not

greatly project over the last ploughing

component.

Double feeler wheel fitted to the second last ploughing

component.

(983) 0000-GB TRANS-PENDELRAD

FEELER WHEEL

- 17 -

TD65/92/75

Transport-Feeler wheel

Tyres

SERVO 45, SERVO 55

10.0/75-12 10 PR

Max. 5,5 bar pressure.

SERVO 35

23x10,50-12 6 PR

Max. 2 bar pressure.

As feeler wheel

• Fix the depth

1. Spindle (1) adjusment

2. Spindle (1) adjusment

As transport wheel

• Doing this relieves the tractor’s rear axle and lifting gear.

Very important remark:

The upper link (1) shold not be connected to the

plough during transportation.

• Always unhinge the upper link during road

transport.

A1 = working position

T1 = transport position

TD 55/93/3

Changing to working position

- Attach upper link and lift the plough with the tractor’s lifting gear.

- Release locks (for safety reasons do this from the tractor seat with the rope (S)

With that swivel the control lever 90° (position A1).

- The turning unit positions the plough vertically.

- Remove bolts (3), swivel the support wheel console about 90° into working

position and pin with the bolts (3) again (A).

Secure bolts with linch pin (5).

- Cutting width adjustment :

- for the servo plus : hydraulically

- for the standard plough : put the axle T3 in the position you want.

- Cylinder in working position (A2)

Changing to transport position

- Adjust the plough in the smallest cutting width

- for the servo plus : hydraulically

- for the standard plough : put the axle T3 in the position you want.

- Cylinder in transport position (T2)

pin with the bolts

- Remove bolts (3), swivel the support wheel console about 90° into the transport

position and pin with the bolts (3) again (T).

Secure bolts with linch pin (5).

- Release locks.

With that swivel the control lever (on the attaching frame) 90° (position T1).

- Lift the plough with the tractor’s lifting gear.

- The turning unit slowly positions the plough horizontally until locking bolts on the

attaching frame automatically engage.

- Remove upper link (1).

A, A2 = working position

T, T2 = transport position

SA1

018-08-8

Transport position

SERVO Standard

(943) 9200 GB AUSLEGER

PLOUGH-TRAILING IMPLEMENTS

- 18 -

Optional equipment

Extension arm with hydraulic releasing device for packer and trailing implements

• A double-action control unit is necessary on the tractor.

• The extension arm is fitted to the main frame.

• A T screw fitting with a plug-in coupling sleeve is fitted to the return line (T) on the plough turning cylinder.

40 - 50 cm

TD65/92/86

TD65/92/85

81v

81e

TD65/92/83

TD65/92/84

30cm

Working position

• Pin strut (83) in the front boring (A).

• The distance (40 - 50 cm) to the

tractor wheel is also set with the

strut (83).

Transport position

• Pin strut (83) in the rear boring (B).

With this the extension arm is

swivelled in to the plough frame.

Working with a trailing implement

For attachment a latching device is fitted to the trailing implement

which lies at right angles to the direction of travel.

Engaging the trailing implement

• Bolts in the locking position (81v).

Switch the servo-valve briefly to „lift“ to lock the bolts.

• With the extension in the outer range (30 cm) hook on to the trailing

implement’s latching device.

Releasing the trailing implement

• Unlock the bolts hydraulically (81e).

Switch the servo-valve briefly to „lower“ to unlock the bolts.

(948) 9200 GB NOVA

SERVO NOVA

- 19 -

90 - 150 bar

TD65/92/57

80 bar

Fully automatic „Nonstop“ overload safety

The fully automatic overload safety is recommended for soils which are

difficult to plough e.g. soil with stones or other foreign bodies.

Every ploughing component is hydromechanically safeguarded against

damage on the SERVO-NOVA plough.

When driving over an obstacle the ploughing body swings out to either side

and then swings automatically back into the working position. There is no

need to stop the tractor.

Along with the fully automatic „Nonstop“ overload safety, all component

carriers have a shear bolt as additional protection. See chapter

"OVERLOAD SAFETY“

for a description.

Setting range

• The overload safety release force can be adapted to the various soil types.

Normal setting

- Pressure in the hydraulic cylinders (40) must be approx. 10 bar greater than the nitrogen pressure in the gas accumulator (43).

--------------------------------------------------------------------------------------------------------------------------------------------

Nitrogen pressure in the gas accumulator (43) Pressure adjustment area

(Factory set) of the hydraulic cylinder (40)

--------------------------------------------------------------------------------------------------------------------------------------------

80 bar 90 bis 150 bar

--------------------------------------------------------------------------------------------------------------------------------------------

Should practice show that the overload safety reacts too often,

the pressure in the hydraulic cylinders can be increased with

the accompanying top-up device (42).

Increasing the pressure in the hydraulic cylinders:

- Shut-off valve in position A.

- Remove sealing cap (41) from shut-off valve and screw on

top-up line.

- Depressurize servo-valve on the tractor.

- Connect plug-in coupling (42) to the tractor.

- Open shut-off valve (position E). The hydraulic pressure

drops.

- Actuate servo-valve on tractor until the manometer shows the

desired pressure. Then

close the shut-off valve

(position A).

Take note!

The shut-off valve must

always be closed

(position A) when

ploughing.

- Depressurize top-up line using servo-

valve.

- Remove top-up line and screw sealing cap (41) back on.

(948) 9200 GB NOVA

SERVO NOVA

- 20 -

Gas accumulator (43):

Pressure in the gas accumulator can also be altered.

A reduction or increase of gas pressure in the accumulator depends upon the

various soil types.

• With very light soil the gas pressure can be somewhat reduced.

Important!

No welding, soldering or mechanical work of any kind may be carried out

on the accumulator.

Altering pressure in the gas accumulator

This work must be carried out only by our Customer Service or by a specialist work

shop.

A special filling and testing device is required to reduce or increase the preload

pressure in the gas accumulator.

1. Reduce pressure:

a) Remove plastic cap.

Remove the lead mould plug (if it exists) in the gas filling plug (44) with a pointed tool.

b) Slightly loosen the gas filling plug (44).

c) Screw on filling and testing device.

d) Slightly open the outlet valve on the filling device.

Slowly let the nitrogen out (N) until the mamometer shows the desired pressure has

been reached.

e) Close outlet valve, remove filling device, tighten gas filling plug and knock the lead

mould plug (if it exists) back in.

2. Increase pressure:

Only use nitrogen (N) to fill the accumulator, do not use oxygen (danger of explosion).

f) Connect filling device to nitrogen bottle.

g) Remove plastic cap.

Remove the lead mould plug (if it exists) in the gas filling plug (44) with a pointed tool.

Slightly loosen the gas filling plug (44).

Screw on filling and testing device.

h) Screw testing device onto nitrogen bottle.

i) Slightly open the outlet valve on the filling device and fill with nitrogen until the mamometer shows the required pressure has been

reached.

k) Close outlet valve, remove filling device, tighten gas filling plug and knock the lead mould plug (if it exists) back in.

Take note

All gas accumulators show a slight pressure drop after a certain period of time, according to "HYDAC" factory specifications.

The gas loss amounts to approx. 2-3 % pa.

It is recommended that the accumulator pressure be checked and, if necessary, regulated after 4-5 years.

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Pottinger SERVO III ON-LAND Operating instructions

Brand: Pottinger

Model: SERVO III ON-LAND

Type: Operating instructions

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