PRONAR T028ML Operator's Manual
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PRONAR T028ML Operator's Manual

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ISSUE 1A-04-2016
PRONAR Sp. z o.o.
17-210 NAREW, UL. MICKIEWICZA 101A, WOJ. PODLASKIE
tel.:
fax:
OPERATOR'S MANUAL
PRONAR T028KM
PRONAR T028ML
TRANSLATION OF THE ORIGINAL DOCUMENT
+48 085 681 63 29
+48 085 681 63 81
+48 085 681 63 83
TRAILER
PUBLICATION NO. 494N-00000000-UM
+48 085 681 64 29
+48 085 681 63 82
+48 085 682 71 10
www.pronar.pl

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Summary of Contents for PRONAR T028ML

  • Page 1 PRONAR Sp. z o.o. 17-210 NAREW, UL. MICKIEWICZA 101A, WOJ. PODLASKIE tel.: +48 085 681 63 29 +48 085 681 64 29 +48 085 681 63 81 +48 085 681 63 82 fax: +48 085 681 63 83 +48 085 682 71 10 www.pronar.pl...
  • Page 3 The machine is designed to meet obligatory standards, documents and legal regulations currently in force. The manual describes the basic safety and operation rules of Pronar T028KM, T028ML trailer. If the information contained in the Operator's Manual needs clarification, the user should refer for assistance to the sale point where the machine was purchased or to the manufacturer.
  • Page 4 SYMBOLS USED IN THIS MANUAL Information, descriptions of danger, precautions, recommendations and orders associated with user safety instructions are indicated as follows: and preceded by the word "DANGER". Failure to observe the instructions may endanger the machine operator's or other person's health or life. Particularly important information and instructions, the observance of which is essential, are indicated with the sign: and preceded by the word "ATTENTION".
  • Page 5 DETERMINING THE DIRECTIONS FOR THE MANUAL'S NEEDS Left side — a left hand side of the person facing the machine's forward travel direction. Right side — a right hand side of the person facing the machine's forward travel direction. SCOPE OF OPERATION STEPS Operation steps are indicated with the following sign: The result of an operation/adjustment task or any notes on execution of the tasks performed is indicated with the sign...

  • Page 7: Table Of Contents

    TABLE OF CONTENTS TABLE OF CONTENTS 1 BASIC INFORMATION IDENTIFICATION 1.1.1 TRAILER IDENTIFICATION 1.1.2 AXLE IDENTIFICATION 1.1.3 LIST OF SERIAL NUMBERS PROPER USE EQUIPMENT TERMS & CONDITIONS OF WARRANTY TRANSPORT 1.10 1.5.1 TRANSPORT ON VEHICLE. 1.10 1.5.2 INDEPENDENT TRANSPORT BY THE USER. 1.12 ENVIRONMENTAL HAZARDS 1.13...
  • Page 8 3.2.1 CHASSIS 3.2.2 SIDE UNDER-RUN GUARDS 3.2.3 MAIN BRAKE 3.2.4 PARKING BRAKE 3.11 3.2.5 HYDRAULICALLY LIFTED SIDE WALLS 3.12 3.2.6 ELECTRIC LIGHTING SYSTEM 3.14 4 CORRECT USE PREPARING THE TRAILER FOR WORK 4.1.1 PRELIMINARY INFORMATION 4.1.2 MACHINE HAND-OVER AND INSPECTION AFTER DELIVERY 4.1.3 PREPARATION FOR FIRST START-UP, TRAILER TEST RUN 4.1.4 PREPARING THE TRAILER FOR EVERYDAY OPERATION HITCHING AND UNHITCHING OF THE TRAILER...
  • Page 9 5.2.5 CHECKING AIR PRESSURE IN TYRES, EVALUATING TECHNICAL CONDITION OF TYRES AND STEEL WHEELS 5.2.6 CHECKING THICKNESS OF BRAKE SHOE LININGS 5.2.7 MECHANICAL BRAKES ADJUSTMENT 5.10 5.2.8 REPLACEMENT OF PARKING BRAKE CABLE AND ADJUSTMENT OF CABLE TENSION. 5.14 PNEUMATIC SYSTEM MAINTENANCE 5.16 5.3.1 PRELIMINARY INFORMATION 5.16...

  • Page 11: Basic Information

    SECTION BASIC INFORMATION...

  • Page 12: Identification

    Location of the data plate and vehicle identification number (VIN) (1) data plate, (2) example of vehicle identification number (VIN) Pronar T028KM and Pronar T028ML agricultural trailers are marked with the data plate (1) and vehicle identification number (VIN) (2). The serial number and data plate are located in the central part of the frame front beam –...

  • Page 13: Axle Identification

    SECTION 1 PRONAR T028KM PRONAR T028ML WARRANTY BOOK and in the sales documents. The meanings of the individual fields found on the data plate are presented in the table below: TABLE 1.1 Markings on data plate ITEM MARKING General description and purpose...

  • Page 14: List Of Serial Numbers

    PRONAR T028KM PRONAR T028ML SECTION 1 FIGURE 1.2 Location of the axle data plate (1) data plate, (2) wheel axle 1.1.3 LIST OF SERIAL NUMBERS TABLE 1.2 List of serial numbers SERIAL NUMBER OF FRONT AXLE SERIAL NUMBER OF CENTRAL AXLE...

  • Page 15: Proper Use

    SECTION 1 PRONAR T028KM PRONAR T028ML 1.2 PROPER USE The trailer is designed for transport of harvested crops and agricultural products in the form of pressed bales or blocks, at the farm and on public roads. The machine is also designed for transporting harvested crops and agricultural products on EUR-pallets and in pallet boxes.
  • Page 16 PRONAR T028KM PRONAR T028ML SECTION 1 transversely arranged wood. The extendible frame can be used to transport long timber. If the trailer is equipped with lifted hydraulic walls, it must not be used to tranpsort wood. The trailer may only be hitched to the agricultural tractors which fulfil all the requirements specified in table (1.4).

  • Page 17: Equipment

    SECTION 1 PRONAR T028KM PRONAR T028ML TABLE 1.4 Agricultural tractor's requirements CONTENTS UNIT REQUIREMENTS Brake system connection sockets Pneumatic system 1 - line according to A DIN 74 294 Pneumatic system 2 - line according to ISO 1728 Hydraulic system...
  • Page 18 PRONAR T028KM PRONAR T028ML SECTION 1 SPECIFICATION • Hydraulically lifted side walls • Wall lift hydraulic system • Toolbox • Rear hitch • Thrust ladders • Parking brake • Illumination system, 12V • Mudguards (front and rear) • Side under-run protection devices •...

  • Page 19: Terms & Conditions Of Warranty

    PRONAR T028KM PRONAR T028ML 1.4 TERMS & CONDITIONS OF WARRANTY PRONAR Sp. z o.o. Narew guarantees the reliable operation of the machine when it is used according to its intended purpose as described in the OPERATOR'S MANUAL. The repair period is specified in the WARRANTY BOOK.

  • Page 20: Transport

    PRONAR T028KM PRONAR T028ML SECTION 1 • making unauthorised alterations to machine design, the user will lose the right to warranty service. The user is obliged to report immediately on noticing any wear in the paint coating or traces of corrosion, and to have the faults rectified whether they are covered by the guarantee or not.
  • Page 21 SECTION 1 PRONAR T028KM PRONAR T028ML The trailer should be attached firmly to the platform of the vehicle using straps or chains fitted with a tightening mechanism. In order to attach the machine in a proper manner, use transport lugs (1) – figure (1.3) and fasten axles, lower longitudinal members of the frame and possibly structural elements of the rotating frame.

  • Page 22: Independent Transport By The User

    PRONAR T028KM PRONAR T028ML SECTION 1 DANGER Incorrect use of securing measures may cause an accident. A correctly secured machine does not change its position with regard to the transport in vehicle. The securing elements must be selected according to the guidelines of the Manufacturer of these elements.

  • Page 23: Environmental Hazards

    SECTION 1 PRONAR T028KM PRONAR T028ML machine with own agricultural tractor to destination. During transport adjust travel speed to the prevailing road conditions, but do not exceed the maximum design speed. 1.6 ENVIRONMENTAL HAZARDS A hydraulic oil leak constitutes a direct threat to the natural environment owing to its limited biodegradability.

  • Page 24: Withdrawal From Use

    PRONAR T028KM PRONAR T028ML SECTION 1 The hydraulic system of the trailer is filled with L-HL32 Lotos hydraulic oil. 1.7 WITHDRAWAL FROM USE In the event of decision by the user to withdraw the machine from use, comply with the regulations in force in the given country concerning withdrawal from use and recycling of machines withdrawn from use.

  • Page 25: Safety Advice

    SECTION SAFETY ADVICE...

  • Page 26: Safety Information

    Manufacturer may invalidate the warranty. • Any modification to the bale trailer frees PRONAR Narew from any responsibility for damage or detriment to health, which may arise as a result.
  • Page 27 SECTION 2 PRONAR T028KM PRONAR T028ML • In the event of failure of the braking system, do not use the trailer until the malfunction is corrected. • The trailer unhitched from tractor must be immobilised with parking brake. If the...
  • Page 28 PRONAR T028KM PRONAR T028ML SECTION 2 • While transporting wood, do not burden the rear extendible frame with chunk wood. • When operating, the air tank and hydraulic brake system are under high pressure. • Condition of hydraulic systems must be frequently checked. Oil leaks in the systems are not allowed.
  • Page 29 SECTION 2 PRONAR T028KM PRONAR T028ML • Repair work on the wheels or tyres should be carried out by persons trained and entitled to do so. This work should be carried out using appropriate tools. • Inspect tightness of wheel nuts after the first use of the trailer, every 2 - 3 hours during the first month of work and then every 30 hours of use (travel).

  • Page 30: Driving On Public Roads

    PRONAR T028KM PRONAR T028ML SECTION 2 • The trailer must not be supported using fragile elements (bricks or concrete blocks). • After completing work associated with lubrication, remove excess oil or grease. • Use appropriate tools, close-fitting protective clothing and gloves when operating, maintaining or cleaning the machine.

  • Page 31: Description Of Residual Risk

    2.1.3 DESCRIPTION OF RESIDUAL RISK Pronar Sp. z o. o. in Narew has made every effort to eliminate the risk of accidents. There is, however, a certain residual risk, which could lead to an accident, and this is connected mainly with the actions described below: •...

  • Page 32: Information And Warning Decals

    Information and warning decals may be purchased directly from the Manufacturer or your PRONAR dealer. Part numbers of information decals are given under pictogram description in table (2.1) and in SPARE PARTS LIST. New assemblies, changed during repair, must be labelled once again with the appropriate safety signs.
  • Page 33 SECTION 2 PRONAR T028KM PRONAR T028ML ITEM SYMBOL MEANING Before beginning servicing or repairs, turn off engine and remove key from ignition 70N-00000005 Danger of crushing the whole body. Maintain safe distance from the ladders and the drawbar. 147N-00000002 Regularly check if the nuts...
  • Page 34 PRONAR T028KM PRONAR T028ML SECTION 2 FIGURE 2.2 Locations of information and warning decals. 2.10...

  • Page 35: Design And Operation

    SECTION DESIGN AND OPERATION...

  • Page 36: Technical Specification

    PRONAR T028KM PRONAR T028ML SECTION 3 3.1 TECHNICAL SPECIFICATION TABLE 3.1 Basic technical data of standard fittings CONTENTS UNIT T028KM T028ML Dimensions Length - with extended rear frame 13,100 15,200 - with retracted rear frame 12,000 14,100 Width 2,470 2,470...

  • Page 37: Trailer Structure

    Each trailer set uses the same frame (1) to which the trailer equipment is fixed as required by the customer. The T028ML trailer load platform is two meters longer than the T028KM model.
  • Page 38 PRONAR T028KM PRONAR T028ML SECTION 3 FIGURE 3.2 Trailer model with stanchions (1) frame – load box, (2) drawbar, (3) under-run guard, (4) toolbox, (5) spring, (6) stanchions Frames (1) of both trailer models have sockets for the quick mounting of stanchions (7) - (front, rear and/or side ones).
  • Page 39 SECTION 3 PRONAR T028KM PRONAR T028ML FIGURE 3.3 Trailer with hydraulic walls (1) frame – load box, (2) drawbar, (3) under-run guard, (4) toolbox, (5) spring, (6) side hydraulic wall, (7) rear wall, (8) front wall Extendible frame – figure (3.4) consists of external frame (1) and internal frame (2). While moving on public roads, the extendible frame must be retracted into the transport position and secured by means of security locks (3) placed under the frame floor.
  • Page 40 PRONAR T028KM PRONAR T028ML SECTION 3 FIGURE 3.4 Extendible frame (1) external extendible frame, (2) internal extendible framer, (3) extendible frame extension locating bolt, (4) rear ladder, (5) ladder inclination locating bolt, (6) illumination bar The drawbar (2) is fixed to the turntable frame (1) by means of pins – figure (3.6) The standard set includes a V-type drawbar with a ø40mm rigid tie rod.
  • Page 41 SECTION 3 PRONAR T028KM PRONAR T028ML FIGURE 3.5 Rear suspension (1) leaf spring, (2) rocker arm, (3) wheel axle, (4) rubber fender FIGURE 3.6 Front suspension (1) turntable frame, (2) V-type drawbar, (3) ball turntable, (4) spring, (5) spring catch, (6) driving axle,...

  • Page 42: Side Under-Run Guards

    PRONAR T028KM PRONAR T028ML SECTION 3 3.2.2 SIDE UNDER-RUN GUARDS Two side under-run guards can be installed in the central part of the chassis frame, on the left side and the right side of the trailer. The complete under-run guards are bolted to holder C-section (2) welded to the trailer frame.

  • Page 43: Main Brake

    SECTION 3 PRONAR T028KM PRONAR T028ML 3.2.3 MAIN BRAKE The trailer is equipped with a two-line pneumatic system including an automatic braking power controller - figure (3.8) The main pneumatic brake is activated from the tractor driver's cab by depressing the brake pedal.
  • Page 44 PRONAR T028KM PRONAR T028ML SECTION 3 SYMBOL MEANING Relay valve Automatic regulator of braking force Conduit connection (connector) Air tank Valve - control connection FIGURE 3.9 Brake pneumatic cylinders (1) membrane cylinder, (2) control connection, (3) short fork, (4) long fork, (5) pneumatic conduit, (6) plug 3.10...

  • Page 45: Parking Brake

    SECTION 3 PRONAR T028KM PRONAR T028ML FIGURE 3.10 Design of pneumatic cylinder (1) front cover, (2) rear cover, (3) membrane, (4) spring, (5) cylinder rod, (6) clamping ring In the two-line system with the automatic controller, the braking force is automatically adjusted depending on the degree of loading of the trailer.

  • Page 46: Hydraulically Lifted Side Walls

    PRONAR T028KM PRONAR T028ML SECTION 3 3.2.5 HYDRAULICALLY LIFTED SIDE WALLS FIGURE 3.11 Wall lifting hydraulic system (1) side wall, (2) front columns, (3) rear columns, (4) arm, (5) arm cylinder, (6) carriage cylinder, (7) six-way valve, (8) cable, (9) carriage, (10) connection hoses, (11) lower profile...
  • Page 47 SECTION 3 PRONAR T028KM PRONAR T028ML The optional equipment of the trailer includes hydraulically lifted side walls – figure (3.11). The front columns (2) form the immovable front wall and the rear columns (3) make the fixed rear wall. The carriages (9) which are installed on the columns lift and lower the side walls (1) while moving vertically along the columns.

  • Page 48: Electric Lighting System

    PRONAR T028KM PRONAR T028ML SECTION 3 3.2.6 ELECTRIC LIGHTING SYSTEM FIGURE 3.13 Arrangement of electrical system components (1) front parking light, white, (2) 7-pin connection socket, (3) rear clearance light, (4) rear lamp assembly, (5) license plate light The trailer's electrical system is designed for supplying from direct current source of 12 V.
  • Page 49 SECTION 3 PRONAR T028KM PRONAR T028ML FIGURE 3.14 Connection socket (A) view of socket, (B) view of socket on the wiring harness fixing side TABLE 3.3 Marking of connection socket's connections MARKING FUNCTION Ground Power supply +12V Left indicator STOP light...
  • Page 50 PRONAR T028KM PRONAR T028ML SECTION 3 3.16...

  • Page 51: Correct Use

    SECTION CORRECT USE...

  • Page 52: Preparing The Trailer For Work

    PRONAR T028KM PRONAR T028ML SECTION 4 4.1 PREPARING THE TRAILER FOR WORK 4.1.1 PRELIMINARY INFORMATION The trailer is supplied to the user completely assembled and does not require additional mounting operations of machine sub-assemblies. The manufacturer guarantees that the machine is fully operational and has been checked according to quality control procedures and is ready for use.

  • Page 53: Preparation For First Start-Up, Trailer Test Run

    SECTION 4 PRONAR T028KM PRONAR T028ML If non-conformities are found, do not hitch and start using the trailer. Discovered defects should be notified directly to the seller in order to remove them. 4.1.3 PREPARATION FOR FIRST START-UP, TRAILER TEST RUN All maintenance activities concerning the trailer are described in detail in further sections of the Operator's Manual.

  • Page 54: Preparing The Trailer For Everyday Operation

    PRONAR T028KM PRONAR T028ML SECTION 4 • Stop tractor and turn off the engine, immobilise the tractor and trailer with parking brake. If during test run worrying symptoms occur such as: • excessive noise and abnormal sounds originating from the rubbing of moving elements, •...

  • Page 55: Hitching And Unhitching Of The Trailer

    SECTION 4 PRONAR T028KM PRONAR T028ML • Fold the extendible frame before driving on public roads. 4.2 HITCHING AND UNHITCHING OF THE TRAILER Ensure that hydraulic, pneumatic and electric connections and the hitch of agricultural tractor are according to the Manufacturer's requirements, if not the trailer should not be hitched to the tractor.
  • Page 56 PRONAR T028KM PRONAR T028ML SECTION 4 tractor and then connect the red conduit to the red socket in the tractor. Connect the electrical lighting system lead. Check and, if necessary, protect conduits against rubbing or other mechanical damage. Just before driving off, remove chocks from under the trailer's wheels and release parking brake.

  • Page 57: Loading And Securing Load

    SECTION 4 PRONAR T028KM PRONAR T028ML Unhitching In order to disconnect the trailer from the tractor, take the following steps in the order as listed. Immobilise tractor with parking brake, turn off tractor engine Ensure that unauthorised persons do not have access to the tractor cab.
  • Page 58 PRONAR T028KM PRONAR T028ML SECTION 4 that the locating locks are correctly secured. Make sure that the stanchions are properly tightened up. Check the technical condition of the hydraulic walls; in particular, turn your attention to leakages of the cylinders and the hydraulic system. It is forbidden to load up and operate a trailer when its ladders, stanchions or hydraulic walls have been damaged.

  • Page 59: Securing Load

    SECTION 4 PRONAR T028KM PRONAR T028ML Loading should be carried out by a person having appropriate authorisation for operating the equipment (if required). 4.3.2 SECURING LOAD Prevent the load (long timber, pressed cubes, bales, pallets or pallet boxes) from getting displaced adequately by means of straps with a tensioning device.
  • Page 60 PRONAR T028KM PRONAR T028ML SECTION 4 • The trailer must not be overloaded, loads must be uniformly distributed so that the maximum permissible axle loads are not exceeded. The trailer's maximum carrying capacity must not be exceeded as this can damage the trailer and pose a risk to the operator or other road users.

  • Page 61: Unloading

    SECTION 4 PRONAR T028KM PRONAR T028ML ATTENTION Travel with a high-volume load by ruts, ditches roadside slopes etc. constitutes a great risk of overturning the trailer. Exercise due caution. • While driving on public roads the extendible frame must be retracted.

  • Page 62: Proper Use And Maintenance Of Tyres

    PRONAR T028KM PRONAR T028ML SECTION 4 4.6 PROPER USE AND MAINTENANCE OF TYRES When working with tyres, the trailer should be secured against rolling by placing chocks under the wheels. Wheels can be taken off the trailer axle only when the trailer is not loaded.

  • Page 63: Maintenance

    SECTION MAINTENANCE...

  • Page 64: Preliminary Information

    PRONAR T028KM PRONAR T028ML SECTION 5 5.1 PRELIMINARY INFORMATION When using the trailer, regular inspections of its technical condition and the performance of maintenance procedures are essential, which keep the machine in good technical condition. In connection with this the user of the trailer is obliged to perform all the maintenance and adjustment procedures defined by the Manufacturer.

  • Page 65: Check Wheel Axle Bearings For Slackness

    SECTION 5 PRONAR T028KM PRONAR T028ML Procedures connected with: • changing grease in axle bearings, • changing bearings, hub seals, • replacement of brake shoes, • other axle repairs, may be performed by specialized vehicle service stations. 5.2.2 CHECK WHEEL AXLE BEARINGS FOR SLACKNESS FIGURE 5.1...
  • Page 66 PRONAR T028KM PRONAR T028ML SECTION 5 Raise the wheel (opposite to the side where chocks are placed). Lifting jack should be positioned in the place indicated by the arrow in figure (5.1). Lifting jack must be suitable for machine weight.

  • Page 67: Adjustment Of Axle Bearing Slackness

    SECTION 5 PRONAR T028KM PRONAR T028ML INSPECTION Checking wheel axle bearings for slackness: • after travelling the first 1,000 km, • after intensive use of trailer, • every six months use or every 25,000 km. Check condition of hub cover, if necessary replace with a new cover. Inspection of bearing slackness may only be conducted when the trailer is hitched to tractor.

  • Page 68: Mounting And Dismounting Wheel, Inspection Of

    PRONAR T028KM PRONAR T028ML SECTION 5 Tighten castellated nut in order to eliminate slackness. Wheel should rotate with insignificant resistance. Undo nut (not less than 1/3 rotation) to align the nearest thread groove with the opening in wheel axle pin. Wheel should rotate without excessive resistance.
  • Page 69 SECTION 5 PRONAR T028KM PRONAR T028ML The lifting jack must be positioned on a level and hard surface so as to prevent sinking into the ground or relocating the jack during lifting. If necessary, use proper backing plates in order to prevent the lifting jack from sinking into the ground.

  • Page 70: Checking Air Pressure In Tyres, Evaluating

    PRONAR T028KM PRONAR T028ML SECTION 5 ATTENTION Axle nuts may not be tightened with impact wrench, because of danger of exceeding permissible tightening torque, the consequence of which may be breaking the thread connection or breaking off the hub pins.

  • Page 71: Checking Thickness Of Brake Shoe Linings

    SECTION 5 PRONAR T028KM PRONAR T028ML 5.2.6 CHECKING THICKNESS OF BRAKE SHOE LININGS FIGURE 5.5 Checking brake shoe linings (1) brake drum, (2) disc, (3) inspection openings, (G) thickness of brake shoe lining Minimum thickness of brake shoe linings is 2 mm.

  • Page 72: Mechanical Brakes Adjustment

    PRONAR T028KM PRONAR T028ML SECTION 5 Excessive wear of brake shoes is the condition in which the thickness of linings which are glued or riveted to steel structures of brake shoes is smaller than the minimum value. This condition is indicated by extended cylinder piston stroke. Check technical condition of brake shoe linings through inspection openings (3) –...
  • Page 73 SECTION 5 PRONAR T028KM PRONAR T028ML FIGURE 5.6 Design of axle brake system (1) expander arm, (2) expander shaft, (3) fork pin, (4) brake cylinder, (5) cylinder rod, (6) cylinder fork INSPECTION • Check technical condition of brake every 6 months.
  • Page 74 PRONAR T028KM PRONAR T028ML SECTION 5 Make sure that the manure spreader's brakes are not engaged. Secure the manure spreader with wheel chocks. Make a line (A) on the brake cylinder rod (1) to indicate the position of the maximum withdrawal of the brake cylinder rod – figure (5.7).
  • Page 75 SECTION 5 PRONAR T028KM PRONAR T028ML During adjustment, membrane (2) must rest on the rear wall of the brake cylinder – compare figure (5.7). FIGURE 5.7 Principle of brake adjustment (1) brake cylinder rod, (2) brake cylinder membrane, (3) expander arm, (4) cylinder fork, (5) position of...

  • Page 76: Replacement Of Parking Brake Cable And Adjustment Of Cable Tension

    PRONAR T028KM PRONAR T028ML SECTION 5 If the brake cylinder piston rod stroke is outside the proper operating range, repeat the adjustment. ATTENTION The positions for fixing the brake cylinder in the bracket openings and the brake cylinder pin in the expander arm are determined by the Manufacturer and must not be changed.
  • Page 77 SECTION 5 PRONAR T028KM PRONAR T028ML Tighten cable and tighten clamps. FIGURE 5.8 Installing the parking brake cable (1) U-bolt clamp, (2) nuts of clamps, (3) handbrake cable Length of parking brake cable should be so selected that at total release of working and parking brake the cable would be loose and hanging by 1 - 2 cm.

  • Page 78: Pneumatic System Maintenance

    PRONAR T028KM PRONAR T028ML SECTION 5 • after adjustment of axle brakes, • after repairs of axle brake system, • after repairs in parking brake system. Before commencing adjustment make certain that the main break is correctly regulated and is functioning properly.

  • Page 79: Checking Tightness

    SECTION 5 PRONAR T028KM PRONAR T028ML 5.3.2 CHECKING TIGHTNESS Checking air tightness of pneumatic system Hitch the trailer to tractor. Park machine and tractor on level surface. Prevent the trailer from rolling by placing chocks under the wheels. Immobilise tractor and trailer with parking brake.

  • Page 80: Inspection Of The System

    PRONAR T028KM PRONAR T028ML SECTION 5 5.3.3 INSPECTION OF THE SYSTEM During tightness inspection attention should additionally be given to technical condition and degree of cleanness of the system components. Contact of pneumatic conduit seals etc. with oil, grease, petrol etc. may cause damage and accelerate the ageing process. Bent, permanently deformed, cut or worn conduits should be replaced.
  • Page 81 SECTION 5 PRONAR T028KM PRONAR T028ML Pressure in conduit can be reduced by pressing the head of the pneumatic connection until resistance is felt. Remove securing slide (1). INSPECTION • Every 3 months. Hold the filter cover (2) with the other hand. After removing slide lock, the cover is pushed off by the spring located in the filter housing.

  • Page 82: Draining Water From Air Tank

    PRONAR T028KM PRONAR T028ML SECTION 5 5.4.1 DRAINING WATER FROM AIR TANK Required maintenance activities Tilt drain valve stem (2) located in the lower part of tank (1). The compressed air in the tank causes the removal of water to the exterior.

  • Page 83: Cleaning And Maintaining Pneumatic Conduit

    SECTION 5 PRONAR T028KM PRONAR T028ML INSPECTION • every 12 months (before winter period). 5.4.3 CLEANING AND MAINTAINING PNEUMATIC CONDUIT CONNECTIONS AND PNEUMATIC SOCKETS DANGER Unreliable and dirty trailer connections may cause unreliability and faulty functioning of brake system. Connection with damaged body should be replaced. In event of damage to cover or seal, change these elements for new reliable elements.

  • Page 84: Hydraulic System Maintenance

    PRONAR T028KM PRONAR T028ML SECTION 5 5.5 HYDRAULIC SYSTEM MAINTENANCE 5.5.1 PRELIMINARY INFORMATION Work connected with the repair, replacement or regeneration of hydraulic system components should be entrusted to specialist establishments which have the appropriate technology and qualifications for this type of work.

  • Page 85: Checking Technical Condition Of Hydraulic

    SECTION 5 PRONAR T028KM PRONAR T028ML INSPECTION • After the first week of use. • Every 12 months. 5.5.3 CHECKING TECHNICAL CONDITION OF HYDRAULIC COUPLERS AND SOCKETS. Hydraulic connections must be technically reliable and kept in a clean condition. Each time before connecting, check if sockets in tractor are maintained in good working condition.
  • Page 86 PRONAR T028KM PRONAR T028ML SECTION 5 Change of grease in hub bearings should be entrusted to specialised service points, equipped with the appropriate tools. According to the recommendations of the axle Manufacturer, dismantle the entire hub, remove the bearing and individual sealing rings. After careful washing and inspection, mount lubricated elements.
  • Page 87 SECTION 5 PRONAR T028KM PRONAR T028ML FIGURE 5.11 Trailer's lubrication points TABLE 5.3 Recommended lubricants MARKING ACC. TO DESCRIPTION TAB. (5.3) Machine general-purpose grease (lithium, lime). Grease for heavily loaded elements with addition of MoS or graphite. Anti-corrosion and penetrating preparation in aerosol.
  • Page 88 PRONAR T028KM PRONAR T028ML SECTION 5 FIGURE 5.12 Trailer's lubrication points 5.26...

  • Page 89: Consumables

    SECTION 5 PRONAR T028KM PRONAR T028ML 5.6.1 CONSUMABLES Hydraulic oil Always adhere to the principle that the oil in the trailer hydraulic system and in the tractor hydraulic system are of the same type. In the event of application of different types of oil make certain that both hydraulic substances may be mixed together.

  • Page 90: Trailer Cleaning

    PRONAR T028KM PRONAR T028ML SECTION 5 DANGER Oil fires should be quenched with the use of carbon dioxide, foam or extinguisher steam. Do not use water to quench oil fires. Lubricants For heavily loaded parts it is recommended to apply lithium greases with addition of molybdenum disulphide (MOS2) or graphite.
  • Page 91 SECTION 5 PRONAR T028KM PRONAR T028ML and warning decals, identification plate, conduit connections, lubrication points, leaf springs and drawbar shock absorber, etc. High pressure water jets may get inside the machine and cause mechanical damage or corrosion. • For cleaning and maintenance of plastic coated surfaces it is recommended to use clean water or special preparations designed for this purpose.

  • Page 92: Storage

    PRONAR T028KM PRONAR T028ML SECTION 5 5.8 STORAGE • Trailer should be kept in a closed or roofed building. • If the machine will not be used for a long time, it is essential to protect it from adverse weather conditions, especially those which initiate corrosion of steel, have aggressive impact on anticorrosion coating and accelerate tyre ageing.
  • Page 93 SECTION 5 PRONAR T028KM PRONAR T028ML 10.9 THREAD METRIC Md [Nm] 1,050 1,150 1,650 1,050 1,450 2,100 (1) – resistance class according to DIN ISO 898 standard Unless other tightening parameters are given, during maintenance repair work apply appropriate torque to tighten nut and bolt connections. Recommended tightening torque values for the most frequently used bolt and nut connections are given in table (5.6).

  • Page 94: Adjustment Of Drawbar Position

    PRONAR T028KM PRONAR T028ML SECTION 5 INSPECTION • Once, after purchasing the trailer, before first use. • Every 12 months. • Every 3 months during intensive work. 5.10 ADJUSTMENT OF DRAWBAR POSITION Location of the drawbar should be selected individually depending on the height of the hitch on the tractor that will pull the trailer.

  • Page 95: Troubleshooting

    SECTION 5 PRONAR T028KM PRONAR T028ML Drive the tractor to the trailer drawbar hitching eye. Undo clamp nut (1) and move the clamp in a selected direction. Tighten the nut and check position of drawbar with regard to tractor hitch.
  • Page 96 PRONAR T028KM PRONAR T028ML SECTION 5 FAULT CAUSE REMEDY Incorrect main or parking Regulate setting of expander arms Excessive heating of axle brake adjustment hubs Worn brake linings Change brake shoes Check oil quality, make sure that Improper hydraulic oil...
  • Page 97 SECTION 5 PRONAR T028KM PRONAR T028ML FAULT CAUSE REMEDY Incorrect toe-in. Excessive wear of left or Damaged leaf spring on one side right tyre shoulder, on of the suspension system. Incorrectly positioned wheel one side Replace leaf springs. axles. Damaged suspension Check suspension system for system, broken leaf spring.
  • Page 98 PRONAR T028KM PRONAR T028ML SECTION 5 5.36...
  • Page 99 NOTES …………………………………………………………………………………………………………… …………………………………………………………………………………………………………… …………………………………………………………………………………………………………… …………………………………………………………………………………………………………… …………………………………………………………………………………………………………… …………………………………………………………………………………………………………… …………………………………………………………………………………………………………… …………………………………………………………………………………………………………… …………………………………………………………………………………………………………… …………………………………………………………………………………………………………… …………………………………………………………………………………………………………… …………………………………………………………………………………………………………… …………………………………………………………………………………………………………… …………………………………………………………………………………………………………… …………………………………………………………………………………………………………… …………………………………………………………………………………………………………… …………………………………………………………………………………………………………… …………………………………………………………………………………………………………… …………………………………………………………………………………………………………… …………………………………………………………………………………………………………… …………………………………………………………………………………………………………… …………………………………………………………………………………………………………… …………………………………………………………………………………………………………… ……………………………………………………………………………………………………………...
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  • Page 101 ANNEX A FRONT/REAR AXLE DISC WHEEL 445/45R19.5; 160J 14x19,5 ET=-30 560/45 R22,5 152D (163A8) TL 16.00x22,5H2 500/60R22,5 155D (166A8) 16.00x22.5H2; ET=-30 385/65 R22.5 TL 11.75x22.5 ET=-30...

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