Metal-Fach N 272/1 User manual

16–100 SOKÓŁKA, POLAND UL. KRESOWA 62
OPERATING MANUAL
PARTS CATALOGUE
MANURE SPREADER
N 272/1 and N 272/2
Edition no. 01
Year of issue: 2012
The original operating manual language is Polish.

2
CE DECLARATION OF CONFORMITY
FOR THE MACHINE
„METAL-FACH” Sp. z o.o.
ul. Kresowa 62
16-100 SOKÓŁKA
which acts as the manufacturer
declares under sole responsibility that the following machine:
this declaration concerns, meets the following requirements:
- Directive 2006/42/EC OF THE EUROPEAN PARLIAMENT AND OF THE COUNCIL
dated 17 May 2006 on machines, and amending Directive 95/16/EC (OJ EU L157 of
09/06/2006, p. 24) and the Resolution of the Minister of Economy of 21 October 2008
concerning general requirements for machinery (Journal of Laws, U. No. 199 item 1228).
The following harmonised standards were used for compliance evaluation:
PN-EN 690+A1:2009 PN-EN ISO 4254-1: 2009 + AC:2010
PN-EN ISO 12100:2011 PN-EN ISO 13857:2010
- and the following standards: PN-ISO 3600:1998, PN-ISO 11684:1998; and the Resolution of
the Ministry of Infrastructure of 31 December 2002 on technical requirements for vehicles
and the scope of their necessary equipment (Journal of Laws issue 32 item 262 as amended).
Safe Use Test Report No. LBC/49/11
Person responsible for engineering documentation: Marcin Halicki
This Declaration of Conformity becomes void and null if the machine design is changed
or modied in any manner without prior consent from the manufacturer.
Sokółka 05.11.2012 President of the Management Board
Jacek Marek Kucharewicz
Manure spreader
type/model N272 ...............................
year of manufacture: .....................................
serial number: ................................................

3
CONTENTS
1. INTRODUCTION ............................................................................................................................... 4
2. SAFETY INSTRUCTIONS................................................................................................................. 5
2.1 RESIDUAL RISKS ...................................................................................................................... 6
2.2 NOISE AND VIBRATION........................................................................................................... 7
3. INFORMATION AND WARNING SIGNS ........................................................................................ 7
4. INTENDED USE................................................................................................................................11
5. OPERATION OF SPREADERS.........................................................................................................11
5.1. Coupling the spreader with the tractor........................................................................................11
5.1.1. Adapter drive ..................................................................................................................... 12
5.1.2. Commissioning and running-in ......................................................................................... 13
5.2. Electrical system........................................................................................................................ 14
5.3. Load body gate control .............................................................................................................. 15
5.4. Floor conveyor........................................................................................................................... 15
5.4.1 Hydraulic drive of the oor conveyor................................................................................. 15
5.4.2 Manure dosing .................................................................................................................... 16
5.5. Adjustment of conveyor chain tension....................................................................................... 17
5.6. Spreading adapter ...................................................................................................................... 17
5.7. Brakes adjustment...................................................................................................................... 18
5.7.1. Parking brake adjustment.................................................................................................. 18
5.7.2. Service brake adjustment................................................................................................... 18
5.8. Adjustment of the land wheels clearance................................................................................... 19
6. MAINTENANCE AND SERVICING............................................................................................... 19
6.1. Hydraulic system servicing........................................................................................................ 19
6.2. Pneumatic system servicing....................................................................................................... 20
6.3. Periodic maintenance................................................................................................................. 20
6.4. Lubrication................................................................................................................................. 21
7. TECHNICAL CHARACTERISTICS................................................................................................ 22
8. MAINTENANCE, CARE AND STORAGE..................................................................................... 23
9. DISMANTLING, DISPOSAL AND ENVIRONMENTAL PROTECTION .................................... 23
10. EQUIPMENT .................................................................................................................................. 24
11. USE .................................................................................................................................................. 25
12. DESIGN AND OPERATING PRINCIPLE OF THE SPREADER................................................. 25

4
WARNING!
FAILURE TO FOLLOW THE RULES AND GUIDELINES INCLUDED IN THESE
INSTRUCTIONS MAY RESULT IN DEATH OR SEVERE BODY INJURY!
1. INTRODUCTION
The user of this product should read and understand these Operating Instructions in full, as well as follow all
the guidelines contained herein to ensure safe operation of this machine. The Instructions include the description
of design and operating principle, technical characteristics and rules of intended use and servicing of the machine.
Exercise extreme caution when in doubt about any procedure or operation. Should you have any questions, consult
the authorised seller or the manufacturer.
Hazard warning sign
This sign denotes important information on the operating safety, which must be read in full and relayed to all
the service personnel if necessary. The information included in the Instructions contain the basic guidelines for
proper operation and servicing, as well as about the operating safety and health regulations.
Pursuant to the Resolution of the Ministry of Infrastructure of 31 December 2002 on technical requirements
for vehicles and the scope of their necessary equipment, we hereby notify that farming tractors and slow-moving
vehicles, as well as trailer units designed for coupling with these vehicles must feature an identication emblem.
The emblems are not required for a vehicle included in a string of vehicles which is not the last vehicle in the
string. We follow this requirement by equipping our vehicles in special mounting frames which are located on the
spreader adapter guard. Always mount the identication emblem for travelling on public roads. Place the emblem
in the tractor cab when the spreader is on duty.
All manure spreaders conform to the trafc code regulations regarding the trafc of machines with the
maximum speed of 30 km/h on public roads. The machines also conform to the safety requirements of the valid
regulations for the agricultural machines of this type.

5
2. SAFETY INSTRUCTIONS
Always turn off the tractor engine, remove the ignition key and engage the parking brake before
leaving the driver's seat.
Should any failure occur, always turn off the tractor engine.
Do not turn on the conveyor when the adapter is off. Prior to starting your work, rst lift the
body gate, engage the adapter, run it at the full PTO speed and then turn on the oor conveyor
drive.
Before attempting to work on any systems of the spreader connected to the tractor with the
drive-shaft, turn off the tractor engine and remove the ignition key. Decouple the drive-shaft
before servicing (maintenance, repairs) the machine. Engage the spreader parking brake and
chock the wheels.
Do not remain in the load body when the drive is on. Do not enter the spread zone when the
spreader is working.
Ensure that no persons are in the spread zone.
Do not exceed the permissible payload and driving speed, otherwise the machine may be
damaged and the trafc safety may be compromised. Adapt the driving speed to the conditions
when working or travelling on a rough terrain. Follow the trafc code regulations when
travelling on public roads.
Do not use the oor conveyor to unload such materials as coal, wood, stone or construction
materials.
Do not use the machine on a terrain with an inclination of 8.5o.
Note that during the unloading the machine will change its impact on the tractor and its
manoeuvring conditions.
Operation of the spreader without the system guards, riding on the spreader and its tow bar or
driving without the connected braking system is strictly forbidden. The driver's mesh guard
must be installed on the front end of the load body. The upper edge of the mesh guard must be
at least 2.6 m from the ground surface. The PTO drive-shaft must always be equipped with the
full guard.
The mesh guard must be positioned to secure the adapter drums when towing the spreader on
public roads. Spreaders equipped with the body gate can only travel on public roads with the
gate closed.

6
The spreader can be operated only by adult personnel with a valid tractor driving licence. It is
strictly forbidden to operate the machine when under the inuence of alcohol or drugs.
Exercise due caution when performing any disassembly to prevent personal injury. If your skin
is cut, wash the wound thoroughly, disinfect with medical hydrogen peroxide solution and seek
medical attention. Any wound fouled with manure may result in Tetanus bacteria infection.
2.1 RESIDUAL RISKS
This spreader has been designed and produced in accordance to the state of technology and safety requirements
valid for its year of manufacture.
The manufacturer of this spreader has taken every effort in its design, production and labelling to eliminate
all hazards related to operation, servicing and maintenance. However, there are specic unavoidable risk present.
Residual risk results from incorrect or improper conduct of the operating personnel. The greatest hazards occur
during the following forbidden actions:
• Operation of the spreader by minors or persons who are unfamiliar with the operating instructions;
• Operation of the spreader by personnel under the inuence of alcohol or other intoxicants;
• Performance of any work on the spreader systems, when the spreader is coupled with the tractor with the
running engine;
• Attempting to work with the machine before inspecting the work site and environment;
• Remaining on (aboard) the machine when it is working or in transit;
• Use of PTO drive-shafts without any guards;
Follow these guidelines and prohibitions:
• read and fully understand the operating instructions,
• secure the machine from access by unauthorised persons and children;
• cleaning, maintenance and repairs must be performed by adequately trained persons and with the PTO
drive-shaft decoupled;
• keep your hands out of hazardous spaces;
• do not use the machine when it is not t for duty and/or when the guards are missing;
• do not use the PTO drive-shafts without any guards;
• no persons are allowed to remain near the machine when it is working;
• no persons are allowed to remain on the machine when it is working or in transit;
• do not transport the machine without the connected and functioning braking and lighting systems;
– only then can you eliminate the residual risks to people and the environment when using this spreader.
WARNING!
The residual risks are present when the aforementioned rules are not followed.

7
2.2 NOISE AND VIBRATION
The operator is inside the tractor cab when the machine is working.
The equivalent sound pressure emission level A (LpA is 75.0 ± 1 dB.
The peak sound pressure value C (LCpeak) is 82.0 ± 1 dB.
Machine sound power – N/A.
(Measurements acc. to PN-EN ISO 4254-1:2006 Annex B section 2.6)
No vibration hazards occur when working with this machine.
The operator's work station is located in the tractor cab, with shock absorption and an ergonomically proled seat.
The value of the vibration exposure of the operator does not exceed 0.5 m/s2.
3. INFORMATION AND WARNING SIGNS
Extremely hazardous areas are indicated with the yellow warning signs and warning labels placed on the
machine. During operation of this machine, exercise extreme caution when remaining in direct proximity of these
areas.
Check the serial number indicated in the Operating Instructions and the warranty card against the serial number
stamped on the nameplate and the chassis frame. The nameplate and the stamped serial number are located on the
chassis end sill, i.e. on the right side of the machine.
The warning stickers must always be legible. If the stickers become illegible, an assembly on
which they are located is replaced or the machine is repainted, the stickers must be purchased
at the retail outletsor ordered at your local dealer as spare parts and suitable replaced.
Turn off the engine and remove the ignition key
before servicing or repairs.
(1x)
Do not remain between the machine and the tractor
when the engine is running.
(1x)
Attention! Read the Operating Instructions.
(1x)
PTO rotational speed: 540 (1000) RPM.
(1x)
540 RPM 1000 RPM
12
43

8
Do not approach the working machine. Maintain a
safe distance from the tow bar when it is being lifted
or lowered.
(1x)
280 kPa
Tyre pressure.
(2x)
Lug for lifting hooks.
(2x)
Turn off the PTO drive at road
turns.
Warning label.
(1x)
Keep a safe distance from power lines.
(1x)
Speed limit sign.
(1x)
NAMEPLATE
Nameplate.
(1x)
Couple with the trailer by using
the single-axle trailer hitch
Warning label.
(1x)
Do not enter the load body when
the drive is on.
Warning label.
(1x)
Brake release sign.
(1x)
5
7
9
11
13
6
8
10
12
14

9
Load capacity 12 t
Load capacity 14 t
Information label
(1x)
N272/1
N272/1
Information label – machine symbol.
(1x)
Keep a safe distance from the adapter. Do not put
your hands between the rotors.
(1x)
Ejected objects. Keep a safe distance from the
machine
(1x)
Warning of being caught by the PTO drive-shaft.
(2x)
Information label – manufacturer's logo.
(1x)
A4VS adapter weight
470 kg
A2VS adapter weight
960 kg
Description of the adapter weight.
(1x)
Warning sign.
(1x)
Lubrication points.
(4x)
Do not ride on ladder steps or the tow bar.
(1x)
15
19
21
23
17
16
20
22
24
18

10
Fig. 1. Locations of the information and warning signs
Danger of hands crushing.
(2x)
CE marking.
(1x)
25 26

11
4. INTENDED USE
The spreaders are intended for spreading of manure, peat, compost, etc. and transportation of crops within
farms and on public roads. The machines are self-dumping and coupled with farming tractors only by the lower
hitch or after reconguring the front hitch with the upper hitch.
Spreaders are equipped with gates and facilitate transport of loose bulk loads by preventing its spillage from
the load body.
The spreaders can only be operated and serviced by adults who have read and understood these Operating
Instructions, specically the information in section "Safety Instructions".
Servicing and operating this product against the Operating Instructions releases the manufacturer from any
liability resulting from improper use and makes the warranty void and null.
The manufacturer forbids any unauthorized modication of the spreader design. Any modications of the
design releases the manufacturer from any effects of such changes and may void the warranty.
In the case of any doubts regarding the use of the spreader, consult your supplier or the manufacturer's service
department.
5. OPERATION OF SPREADERS
5.1. Coupling the spreader with the tractor
The spreader is coupled with the tractor in the following way:
- couple the hitch lug with the tractor coupler;
- t the PTO drive-shaft and use the chains to secure the shaft guard from turning during operation;
- connect the spreader electrical system to the tractor electrical system and secure the plug from decoupling;
- connect the spreader drive hydraulic system to the terminal of the tractor hydraulic system by twisting the
quick-release coupling nut clockwise home;
- connect the pneumatic system of the service brake;
- connect the body gate hydraulic system;
- check that the connections between the spreader and the tractor hitch, electrical connections, service brake
connections and the connections between various systems and drives;
- if all systems are functional, release the parking brake and lift the support.
THE FOLLOWING IS STRICTLY FORBIDDEN:
- coupling the spreader with the tractor by using any other coupling than the lower hitch or, if congured for
the upper hitch, with the upper hitch of the tractor. The machine must have the parking brake engaged when
it is being coupled;
- pressurized hydraulic systems of the tractor when coupling the trailer – all control valves must be set to
neutral. When the quick-release coupling nut is tightened, the coupling is opened and high oil pressure may
result in a leak. Tighten the nuts home to ensure that the couplings are fully sealed.

12
Disconnecting the spreader:
Before disconnecting/decoupling the spreader from the tractor, rst engage the machine parking brake and
lower the support – see g. 2 item 1.
The support stabilizes the spreader when it is loaded or not.
Fig. 2. N272/1, N272/2 spreader support.
Do not disassemble the support or rest the machine on makeshift supports.
Do not leave agricultural equipment on slopes or any other terrain inclinations without securing
it against accidental rolling.
5.1.1. Adapter drive
The adapter drums is driven by the PTO drive-shaft, which couples the tractor PTO with the two-sectional
drive shaft and the PTO drive-shaft with the friction overload clutch. The clutch protects the power system from
damage when the torque exceeds the factory set value. Spreaders with the A2VS adapter (with two vertical worm
drums) have the PTO drive-shaft without a slip clutch. The safety clutch is a shear pin type clutch on the shaft that
couples the machine with the tractor.

13
The PTO drive-shafts used in the spreader:
Machine Type Shaft designation Rated torque Rated length Transferred
output
Overload clutches
Nm mm kW Nm
N272/1 and
N272/2
+
A2VS version
6R602-7-BA-K601
+
8R802-3-DA-C803
Or for A2VS:
8R-804-4-BA-804
540
(450)
900
(750)
750
1745
920
940
30
(46)
50
(77)
77
1600
1500
None
The shaft must bear the "CE" marking. Use only the shafts that are equipped with complete
guards.
Do not use the PTO drive-shaft with damaged guards.
When the machine is properly operated, the overload clutch should not engage. If the clutch engages, the
machine is overloaded. If the material is not ejected during operation, the friction overload clutch is engaged.
Remove the cause of overload (e.g. a cord wound on the drums, objects jammed between the drums, i.e. pegs or
alike). A2VS version: when the drive system is overloaded, the pin in the coupling shaft is sheared.
Before attempting to clear the jam, turn off the tractor engine and remove the ignition key.
Decouple the PTO drive-shaft from the tractor.
When the overload cause has been cleared, prior to turning the machine on and directly before
turning on the drive, switch the shift direction for a short moment. (The conveyor shift direction
is switched by changing the feed direction with the directional control valve of the tractor.)
5.1.2. Commissioning and running-in
Do the following before commissioning the spreader:
- read and understand the operating instructions in full;
- complete the machine in accordance with the intended work;
- check the tightness of all threaded connections and the tension of chains;
- supply lubricants at the lubrication points;
- check the transmission oil level and add if required – use HIPOL – 15 oil;
- park the spreader and run it in initially without the load.

14
The initial running in should last approximately 15 minutes at decreased rotational speed of the tractor drive.
During this procedure ensure that all systems work smoothly and without jamming and excessive noise. When
the initial running-in is nished, make sure that the fastening bolts did not become loose and check the tension of
chains.
Lubricate at all lubrication points twice a day for the rst 20 operating hours. Replace the transmission oil
afterwards and check the tightening of bolts and chain tension. Readjust if necessary.
The manure can be mechanically loaded on the spreader. In order to fully use the spreader load capacity when
working with long-straw manure, it is allowed to ll the load body up to 10 cm above the upper edge. Do not load
the long-straw manure directly on the adapter drums – this may damage the drive. The load must not hang over the
body sides. When the work is nished or if needed, remove the manure which may accumulate on the rear beam in
the area of socket wheels and on the spreader drums, as well as on the drive shafts. Excessive accumulation of dirt
can overload the tractor and elongate the conveyor chains. In order to achieve the best spreading parameters (i.e.
width and uniformity), keep the PTO speed on the tractor between 470 and 540 rpm (A2VS – two worm rotors –
versions: 920-1000 rpm).
Note:
Clean the spreader only when the drive is decoupled and the tractor is stopped. Exercise extreme caution
when cleaning with the raised gate.
Decouple the PTO drive-shaft from the tractor.
Note:
When the spreader works on the eld, the material in the load body moves towards its rear end. This
slowly decreases the pressure on the tractor hitch and lowers the wheel grip of the rear tractor wheels. This
may reduce the tractor's pull force on difcult terrain (i.e. hummocky or damp ground). Due to this fact it
is advised perform the nal phase of unloading the load body of the spreader when moving down a slope or
on a at (level) terrain.
5.2. Electrical system
The spreader is equipped in a 12 V electrical system supplied by the tractor. Before entering a public road,
always make sure that the lighting system is functional. The electrical system powers the two front sidelamps, the
lamp clusters and the clearance lamps.
Loading and unloading

15
5.3. Load body gate control
The load body gate is lifted and lowered hydraulically by the secondary hydraulic system of the tractor.
5.4. Floor conveyor
5.4.1 Hydraulic drive of the oor conveyor
The oor conveyor system of the spreader is hydraulically driven by the transmission gearbox powered by the
hydraulic motor, which in turn is driven by the pressurised hydraulic oil from the tractor's hydraulic system.
The shift speed of the oor conveyor (i.e. the manure spreading output) is controlled and adjustable by setting
the adjustment screw (2) of the ow controller (1) installed in the right section of the spreader front panel. Turning
the adjustment screw clockwise increases the conveyor shift speed, while turning it counter-clockwise decreases
the shift speed. When the spreader is unloaded and the material mass decreases, the conveyor shift speed slightly
increases at the same time.
Fig. 3. Flow controller
The only shift speed which is pre-set is the reverse shift speed of the conveyor. Switching the conveyor shift to
forward motion is done by changing the feeding direction in the tractor (with the directional control valve of the
tractor) when the valve at the ow controller is open.

16
5.4.2 Manure dosing
The oor conveyor output for the manure with a specic gravity of 950 kg/m3:
Setting no. Conveyor output
kg/s
1 0
2 0
3 8.5
4 19.1
5 34.3
6 51.2
7 66.8
8 86.2
9 102.4
10 132.7
The manure dosing (at the specic gravity of 950 kg/m3), depending on the oor conveyor shift speed and the
actual service speed is presented in the following table:
Setting no.
Conveyor
output
[kg/s]
Spreader service speed [km/h]
4 5 6 7 8 9 10
Manure dose [T/ha]
3 8.5 9.6 7.7 6.4 5.5 4.8 4.3 3.8
4 19.1 21.5 17.2 14.3 12.3 10.7 9.6 8.6
5 34.3 38.6 30.9 25.7 22.0 19.3 17.2 15.4
6 51.2 57.6 46.1 38.4 32.9 28.8 25.6 23.0
7 66.8 75.2 60.1 50.1 42.9 37.6 33.4 30.1
8 86.2 97.0 77.6 64.7 55.4 48.5 43.1 38.8
9 102.4 115.2 92.2 76.8 65.8 57.6 51.2 46.1
10 132.7 149.3 119.4 99.5 85.3 74.6 66.4 59.7
The manure dosing (at the specic gravity of 950 kg/m3), depending on the oor conveyor shift speed and the
actual service speed is presented in the following table:
Setting no.
Conveyor
output
[kg/s]
Spreader service speed [km/h]
4 5 6 7 8 9 10
Manure dose [T/ha]
3 5.4 6.1 4.9 4.1 3.5 3.0 2.7 2.4
4 12.1 13.6 10.9 9.1 7.8 6.8 6.1 5.4
5 21.7 24.4 19.5 16.3 13.9 12.2 10.9 9.8
6 32.3 36.3 29.1 24.2 20.8 18.2 16.2 14.5
7 42.1 47.4 37.9 31.6 27.1 23.7 21.1 18.9
8 54.4 61.2 49.0 40.8 35.0 30.6 27.2 24.5
9 64.7 72.8 58.2 48.5 41.6 36.4 32.4 29.1
10 83.8 94.3 75.4 62.9 53.9 47.1 41.9 37.7

17
Warning: Take extra caution when performing the adjustment. Turn off the tractor engine,
remove the ignition key and engage the parking brake of the tractor.
5.5. Adjustment of conveyor chain tension
The conveyor chains are adjusted by the stretcher screws (see g. 4 item 1) located on the front panel of the
spreader. The tension of the chains is veried by lifting the chain at the middle of the body oor length. The
distance of the chain from the oor should be 1–6 cm when lifted. If the chain is lifted above the maximum
stretcher adjustment value, replace the chain with a new one.
Fig. 4. Tensioning the conveyor chains.
The tension of the chain (4) that moves the strips (5) is adjusted with screws (1) (see Fig. 4).
5.6. Spreading adapter
The adapter consists of a frame on which four worm drums are installed (or 2 in A2VS), and driven by the PTO
drive-shaft; the drive shafts and the transmission gearbox installed in the adapter frame. The drive is transmitted
from the tractor PTO.
The adapter frame is connected to the spreader frame by eight M16 bolts.
Adapter disassembly procedure:
• decouple the PTO drive-shaft from the adapter transmission;
• remove the fastening bolts which attach the adapter to the side panels and remove the adapter;
• use a lifting device with the minimum capacity of 600 kg to remove the adapter (use a 1200 kg capacity
lifting device or more capable to remove the A2VS adapter).

18
Exercise extreme caution when assembling and disassembling (repairing) the adapter. Due
to the large weight of these components, use suitable lifting equipment. The assembly and
disassembly procedures must be performed by two persons.
The vertical adapters and the attachment must be handled with the use of a lifting device with
the minimum capacity of 600 kg (1200 kg in the case of the A2VS two-rotor adapter).
5.7. Brakes adjustment
5.7.1. Parking brake adjustment
The parking brake is adjusted by setting the initial cable tension by making a loop of a suitable length on both
cable ends.
The parking brake is functioning when it is capable of stopping the loaded spreader on a slope
with a grade of 18°.
5.7.2. Service brake adjustment
The braking system must be suitably adjusted to compensate the wear of the brake shoe linings. If the actuator
idle stroke is excessive, adjust as follows: remove the cotter pin (3), remove the crown nut (1), loosen the brake
expander lever (2) and shift the lever in the direction opposite to the braking motion in such way that the lever is
perpendicular to the brake actuator when the latter is in the braking position. If the brake linings are excessively
worn, replace them. After each adjustment make sure to tighten the crown nut and secure it with a new cotter pin.
Fig. 5. Service brake adjustment

19
When the brakes are properly adjusted, the spreading unit (tractor + spreader) with the rated
load at 30 km/h should stop at 10 m from the brake engagement and the wheels should brake
uniformly.
When the spreader has made the rst 100 km, check the brakes and adjust them if necessary.
5.8. Adjustment of the land wheels clearance
When the new spreader has made the rst 100 km and every next 1000-1500 km, check the clearance of the
land wheels and adjust it if necessary.
Fig. 6. Checking the clearance of the land wheels.
Check the clearance of the land wheels as follows:
Couple the spreader with the tractor on the lower hitch and engage the tractor parking brake. Jack up one side of
the spreader to lift the wheel from the ground on this side and secure the spreader from falling. Attempt to turn the
wheel in order to check the bearing clearance, see Fig. 7. If the wheel clearance is too large, remove the hub cap,
remove the cap seal and the crown nut clevis pin. Rotate the wheel and tighten the crown nut at the same time until
the wheel stops. Now loosen the crown nut by 1/6-1/5 of the full turn, i.e. to the nearest clevis pin groove. Install
a new clevis pin, new seal and mount the hub cap. Repeat for the other spreader wheels.
6. MAINTENANCE AND SERVICING
6.1. Hydraulic system servicing
The hydraulic system oil of the spreader and the external hydraulic system oil (tractor) must always be of the
same grade.
DO NOT use different oil grades. The system has the SAE 80W viscosity oil.

20
Caution! The hydraulic hoses must be replaced after 6 years from the date of manufacture.
The spreader hydraulic system must be absolutely leak-tight. If there are oil leaks at the hydraulic connections,
tighten them; if the leak persists, replace the hose or the connection ttings. The hydraulic hoses must also be
replaced upon any mechanical damage.
The condition of the hydraulic system must be monitored continuously throughout the operating life.
Caution! The hydraulic oil must be replaced in accordance with the operating manual of the
coupled tractor, but at least every two years.
6.2. Pneumatic system servicing
Periodically check the pneumatic system tightness. Thoroughly inspect every connection. Check the leak-
tightness of the system at the rated pressure of approx. 600 kPa (6.0 kG/cm2). After decoupling the tractor, the
10-minute pressure loss in the vessel should not exceed 2% of the initial pressure value which is set directly after
decoupling the trailer. If any lines, seals or other system components are damaged, the compressed air will escape
from the damaged points, producing a distinctive hissing noise. Replace any damaged seals or lines which cause
the leaks.
If the leak is located at the actuator, replace the device. If any mechanical damage is found on the vessel (e.g.
dents, cracks, etc.) or if the vessel has been exposed to high temperature, replace it.
Drain all water from the pneumatic system at least twice a year, especially before winter. To do this, press and
hold the lever that extends from the drain valve screwed into the bottom part of the tank until the water ow stops.
Release the lever. The tank should remain leak tight.
6.3. Periodic maintenance
The periodic technical inspection of the spreader should be performed every 50 operating hours.
Due to safety considerations, it is necessary to perform functional tests of the service and
parking brakes, the power transmission system and the wheel system.