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PRONAR T902 Operator's Manual

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ISSUE 1A-01-2010
PRONAR Sp. z o.o.
17-210 NAREW, UL. MICKIEWICZA 101A, WOJ. PODLASKIE
tel.:
fax:
OPERATOR'S MANUAL
PRONAR T902
TRANSLATION OF THE ORIGINAL DOCUMENT
+48 085 681 63 29
+48 085 681 63 81
+48 085 681 63 83
TRAILER
PUBLICATION NO 193N-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 T902

  • 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: Manufacturer's Address

    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 T902 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

    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 BASIC INFORMATION 1.1 IDENTIFICATION 1.1.1 TRAILER IDENTIFICATION 1.1.2 AXLE IDENTIFICATION 1.1.3 LIST OF SERIAL NUMBERS 1.2 INTENDED USE 1.3 EQUIPMENT 1.4 TERMS & CONDITIONS OF WARRANTY 1.5 TRANSPORT 1.10 1.5.1 TRANSPORT ON VEHICLE 1.10 1.5.2 INDEPENDENT TRANSPORT BY THE USER 1.12 1.6 ENVIRONMENTAL HAZARDS 1.12...
  • Page 8 DESIGN AND OPERATION 3.1 TECHNICAL SPECIFICATION 3.2 CHASSIS 3.3 LOAD BOX 3.4 HYDRAULIC SYSTEM OF SLIDING WALL 3.5 TAILGATE HYDRAULIC SYSTEM 3.6 HYDRAULIC STEERING SYSTEM 3.10 3.7 HYDRAULIC SYSTEM OF THE HINGED WALL 3.12 3.8 PNEUMATIC BRAKING SYSTEM 3.13 3.9 PARKING BRAKE 3.18 3.10 ELECTRIC LIGHTING SYSTEM...
  • Page 9 5.2.3 CHECKING WHEEL AXLE BEARINGS FOR SLACKNESS: 5.2.4 ADJUSTMENT OF SLACKNESS OF WHEEL AXLE BEARINGS 5.2.5 MOUNTING AND DISMOUNTING WHEEL, INSPECTION OF WHEEL NUT TIGHTENING. 5.2.6 CHECKING AIR PRESSURE IN TYRES EVALUATING TECHNICAL CONDITION OF TYRES AND STEEL WHEELS 5.2.7 MECHANICAL BRAKES ADJUSTMENT 5.10 5.2.8...
  • Page 10 5.7.2 LUBRICANTS 5.31 5.8 CLEANING THE TRAILER 5.31 5.9 STORAGE 5.33 5.10 TIGHTENING TORQUE FOR NUT AND BOLT CONNECTIONS 5.33 5.11 SETTING AND ADJUSTING THE LIMIT VALVES 5.35 5.12 ADJUSTMENT OF DRAWBAR POSITION 5.36 5.12.1 WHEEL STEERING SYSTEM 5.37 5.13 TROUBLESHOOTING 5.39...
  • Page 12 SECTION BASIC INFORMATION...

  • Page 13: Identification

    Location of the data plate and serial number (1) data plate, (2) serial number PRONAR T902 trailer is marked with data plate (1) located on the front beam of the load box and with serial number (2) located on a gold painted rectangle. When buying the machine check that the serial numbers on the machine agree with the number written in the WARRANTY BOOK, in the sales documents and in the OPERATOR'S MANUAL.

  • Page 14: Axle Identification

    SECTION 1 Pronar T902 TABLE 1.1 Markings on data plate ITEM MARKING General description and purpose Symbol /Type Year of manufacture Seventeen digit serial number (VIN) Official certificate number Tare weight Maximum gross weight Carrying capacity Permissible hitching system loading...

  • Page 15: Intended Use

    1.2 INTENDED USE T902 movable wall trailer is designed for transport of harvested crops and agricultural products as well as loose and bulk materials at the farm and on public roads at a maximum speed of 40 km/h.
  • Page 16 SECTION 1 Pronar T902 It is acceptable to transport construction materials, mineral fertilisers and other loads, if fulfilling conditions indicated in section 4. Non-compliance with the recommendations concerning the carriage and loading of goods described by the Manufacturer and the road transport regulations in force in the country in which the trailer is used shall void the warranty and is regarded as the use of the machine contrary to its intended purpose.
  • Page 17 Pronar T902 SECTION 1 • understand the trailer's operating principle and how to operate it safely and correctly, • adhere to the established maintenance and adjustment plans, • comply with general safety regulations while working, • prevent accidents, • comply with the road traffic regulations and transport regulations in force in a given country, in which the trailer is used, •...

  • Page 18: Equipment

    SECTION 1 Pronar T902 TABLE 1.2 Agricultural tractor's requirements CONTENTS UNIT REQUIREMENTS Brake system Double conduit pneumatic system according to ISO 1728:2007 Maximum system pressure bar / kPa 8 / 800 Hydraulic system Hydraulic oil L HL 32 Lotos Pressure rating of the system...

  • Page 19: Terms & Conditions Of Warranty

    Warning reflective triangle 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 SECTION 1 Pronar T902 The warranty does not apply to those parts and sub-assemblies of the machine, which are subject to wear in normal usage conditions, regardless of the warranty period. Consumables include the following parts/sub-assemblies: • drawbar hitching eye, •...

  • Page 21: Transport

    Pronar T902 SECTION 1 For detailed Terms & Conditions of Warranty, please refer to the WARRANTY BOOK attached to each machine. Modification of the trailer without the written consent of the Manufacturer is forbidden. In particular, do NOT weld, drill holes in, cut or heat the main structural elements of the machine, which have a direct impact on the machine operation safety.
  • Page 22 SECTION 1 Pronar T902 depends on a number of things, including weight of the trailer, the construction of vehicle carrying trailer, speed of travel and other conditions. For this reason it is impossible to define the securing plan precisely. A correctly secured trailer does not change its position with regard to the transport vehicle.

  • Page 23: Independent Transport By The User

    Pronar T902 SECTION 1 IMPORTANT! When being road transported on a motor vehicle the trailer must be mounted on the vehicle's platform in accordance with the transport safety requirements and the regulations. During loading, make sure that the total height of the trailer-semi-trailer combination does not exceed four meters.

  • Page 24: Withdrawal From Use

    SECTION 1 Pronar T902 be kept in a sealed, marked, hydrocarbon resistant container. The container should be kept away from heat sources, flammable materials and food. DANGER Used hydraulic oil or gathered remains mixed with absorbent material should be stored in a precisely marked container.
  • Page 25 Pronar T902 SECTION 1 DANGER During dismantling personal protection equipment shall be used i.e. protective clothing, boots, gloves and protective goggles etc. Avoid contact of skin with oil. Do not allow used hydraulic oil to spill. 1.14...

  • Page 26: Safety Advice

    SECTION SAFETY ADVICE...

  • Page 27: Basic Safety Rules

    Pronar T902 SECTION 2 2.1 BASIC SAFETY RULES 2.1.1 USE OF TRAILER • Before using the trailer, the user must carefully read this operator's manual. When operating the machine, the operator must comply with all the recommendations included in the operator's manual.

  • Page 28: Hitching And Disconnecting The Trailer

    SECTION 2 Pronar T902 • The trailer may only be used when all the safety guards and other protective elements are technically sound and correctly positioned. In the event of loss or destruction of the safety guards, they must be replaced with new ones.

  • Page 29: Transporting The Machine

    Pronar T902 SECTION 2 • The limit valves in the wall sliding hydraulic system limit the load box sliding to the rear. Position of bumpers controlling the operation of this valve is set by the Manufacturer and must not be changed during trailer operation.
  • Page 30 SECTION 2 Pronar T902 • The machine must NOT be left unsecured. When not connected to the tractor, the trailer must be immobilised with parking brake and protected against rolling with chocks or other objects without sharp edges placed under the trailer wheels.
  • Page 31 Pronar T902 SECTION 2 FIGURE 2.2 Mounting place for slow-moving vehicle warning sign (1) slow-moving vehicle warning sign, (2) attachment point • Before driving off, check that the parking brake is released, the braking force regulator is positioned in the proper position (applies to manual three-position regulators).

  • Page 32: Loading And Unloading

    SECTION 2 Pronar T902 • Reckless driving and excessive speed may cause accidents. • The total height of the loaded trailer must not exceed four meters. • A load protruding beyond the edge of the trailer should be indicated according to the road traffic regulations.

  • Page 33: Tyres

    Pronar T902 SECTION 2 • Do NOT climb on the load box during loading and unloading. • The load may not protrude further out than the upper edge of the trailer's front wall. The load must be arranged in such a way that it does not threaten the trailer stability.

  • Page 34: Maintenance

    SECTION 2 Pronar T902 • 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 trailer, after the first travel under load and then every 6 months of use or every 25,000 km.
  • Page 35 Pronar T902 SECTION 2 • Before beginning repair works on hydraulic or pneumatic systems reduce oil or air pressure. • Servicing and repair work should be carried out in line with the general principles of workplace health and safety. In the event of injury, the wound must be immediately cleaned and disinfected.

  • Page 36: Description Of Residual Risk

    Damaged drawbar eye should be replaced. 2.2 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 37: Information And Warning Decals

    In the event of their destruction, they must be replaced with new ones. Safety decals are available from your PRONAR dealer or directly from PRONAR customer service. New assemblies, changed during repair, must be labelled once again with the appropriate safety signs.
  • Page 38 SECTION 2 Pronar T902 DECAL MEANING Before starting work, read THE OPERATOR'S MANUAL Before beginning servicing or repairs, turn off engine and remove key from ignition Check the condition of the screw and nut connections of the wheel axles Grease according to the...
  • Page 39 Pronar T902 SECTION 2 DECAL MEANING Raising / lowering the tailgate Plug cap - black Front wall sliding Plug cap - blue Opening/closing the hinged wall. Plug cap (green) Minimum vertical load capacity of tractor's hitch Do not stand near the opening tailgate.
  • Page 40 SECTION 2 Pronar T902 FIGURE 2.3 Locations of information and warning decals. 2.15...
  • Page 41 Pronar T902 SECTION 2 2.16...

  • Page 42: Design And Operation

    SECTION DESIGN AND OPERATION...

  • Page 43: Technical Specification

    Pronar T902 SECTION 3 3.1 TECHNICAL SPECIFICATION TABLE 3.1 Technical data of the standard machine version CONTENTS UNIT T900 Dimensions Total length (with drawbar) 9,100 Total width 2,550 Maximum height 3,500 Wheel track 2,150 Axle base 1,810 Load box inside dimensions:...

  • Page 44: Chassis

    SECTION 3 Pronar T902 CONTENTS UNIT T900 Maximum design speed km/h Maximum vertical hitch load 3,000 3.2 CHASSIS FIGURE 3.1 Chassis components (1) lower frame, (2) front rigid axle, (3) rear steering axle, (4) wheel, (5) leaf spring, (6) mudguard, (7) hydraulic steering system box Trailer chassis is shown in figure (3.1).

  • Page 45: Load Box

    The chassis includes the hydraulic steering system box (7). The box is bolted to the left longitudinal member of the trailer. 3.3 LOAD BOX The load box (1) of Pronar T902 trailer is a welded structure made from steel sheet and shapes. The load box can be made in four versions: •...
  • Page 46 SECTION 3 Pronar T902 FIGURE 3.2 Load box components (1) box, (2) sliding wall, (3) tailgate, (4) drawbar, (5) support leg, (6) bumper, (7) ladder, (8) hinged wall extension, (9) chute...

  • Page 47: Hydraulic System Of Sliding Wall

    (6) is attached to the frame in the rear part of the load box. 3.4 HYDRAULIC SYSTEM OF SLIDING WALL T902 trailer is equipped with hydraulic wall sliding system – figure (3.3). The system is used for automatic unloading of loose materials by shifting the wall (1) to the rear by means of a telescopic cylinder (3).
  • Page 48 SECTION 3 Pronar T902 FIGURE 3.3 Design of the hydraulic system of the sliding wall (1) sliding wall, (2) arm, (3) sliding cylinder, (4) rising cylinders, (5), (6) limit valves, (7) connection conduit...

  • Page 49: Tailgate Hydraulic System

    Pronar T902 SECTION 3 Proper adjustment of the limit valves is described in chapter (5.11) SETTING AND ADJUSTING THE LIMIT VALVES. The diagram of the hydraulic system of the sliding wall is shown in figure (3.4). FIGURE 3.4 Concept diagram of the hydraulic system of the sliding wall (1) sliding cylinder, (2) tipping cylinder, (3) limit valve 3.5 TAILGATE HYDRAULIC SYSTEM...
  • Page 50 SECTION 3 Pronar T902 FIGURE 3.5 Design of the hydraulic system of the tailgate (1) tailgate, (2) cylinder, (3) hydraulic lock, (4) conduit FIGURE 3.6 Concept diagram of the hydraulic system of the tailgate (1) cylinder, (2) hydraulic lock, (3) conduit...

  • Page 51: Hydraulic Steering System

    SECTION 3 3.6 HYDRAULIC STEERING SYSTEM As standard, Pronar T902 trailer is equipped with hydraulic steering system for controlling the rear axle wheels of the trailer – figure (3.8). Axle design enables easier cornering and easier manoeuvring on marshy terrain. The wear of tyres of the machine is consequently reduced.
  • Page 52 SECTION 3 Pronar T902 FIGURE 3.8 Design of the hydraulic steering system (1) pump, (2) cylinder, (3) axle steering cylinder, (4) string, (5) hydraulic accumulator, (6) steering mechanism lever Hydraulic accumulators (6) are used in order to eliminate minimal swing of axle steering cylinders and reduce load applied to the system during turning.

  • Page 53: Hydraulic System Of The Hinged Wall

    3.7 HYDRAULIC SYSTEM OF THE HINGED WALL Standard version of Pronar T902 trailer is equipped with the load box with two fixed side walls. Three optional versions of the load box are also available: with the left hinged wall, with the right hinged wall or with both hinged walls.

  • Page 54: Pneumatic Braking System

    (5) sequence valve, (6) hydraulic lock, (7) connecting conduits, 3.8 PNEUMATIC BRAKING SYSTEM T902 trailer is equipped with one of the two types of main braking systems (pneumatic brakes): • double conduit pneumatic braking system with automatic braking force regulator, figure (3.11) –...
  • Page 55 Pronar T902 SECTION 3 • double conduit pneumatic braking system with automatic braking force regulator - figure (3.13) – option. FIGURE 3.11 Design of the braking system with manual braking force regulator (1), (2) conduit connections, (3) control valve, (4) braking force regulator, (5) relay valve,...
  • Page 56 SECTION 3 Pronar T902 Brake pneumatic cylinders applied in the systems are mounted on specially prepared brackets welded to the axle. They are membrane cylinders. Air supplied to cylinder exerts pressure on membrane which in turn moves cylinder piston and rotates to axle expander lever.
  • Page 57 Pronar T902 SECTION 3 FIGURE 3.13 Three position manual regulator (1) three-step brake force regulator, (2) regulator setting control lever, (A), (B), (C) regulator operation position FIGURE 3.14 Concept diagram of braking system with manual regulator (1), (2) conduit connection, (3) control valve, (4) automatic braking force regulator, (5) relay valve, (6) air filter, (7) pneumatic cylinder, (8) air tank 3.16...
  • Page 58 SECTION 3 Pronar T902 Automatic braking force regulator (4) adapts braking pressure depending on the trailer load. During normal work it does not require service. The system is equipped with two pneumatic connections. They are marked with coloured safety covers, which enable identification of individual connections: •...

  • Page 59: Parking Brake

    Pronar T902 SECTION 3 3.9 PARKING BRAKE The parking brake is used for immobilising trailer while standing motionless. The brake crank mechanism (1) is mounted on the left side of the front beam. Steel cable (4) is connected to axle expander lever (2) with crank mechanism. Tightening the cable causes tilting of the expander arms, which part the brake shoes immobilising the trailer while standing motionless.
  • Page 60 SECTION 3 Pronar T902 FIGURE 3.17 Lighting system components (1) 7-pin socket, (2), (3) front clearance lamps (white), (4) side lamp (orange), (5) reflector (white), (6) license plate light, (7) rear left lamp assembly, (8) rear right lamp assembly, (9) rear clearance lamp...
  • Page 61 Pronar T902 SECTION 3 FIGURE 3.18 Electric lighting system diagram (1) socket, (2) front parking light (white), (3) side clearance lamp (orange), (4) rear lamp assembly, (5) licence plate light 3.20...
  • Page 62 SECTION 3 Pronar T902 TABLE 3.2 PLUG-TYPE CONNECTORS ACCORDING TO ISO 1724 MARKING COLOUR FUNCTION BLACK Ground ORANGE Left parking lights BLUE Left indicator GREEN STOP lights BLACK AND GREEN Right indicator BROWN Right parking lights 3.21...
  • Page 63 Pronar T902 SECTION 3 3.22...

  • Page 64: Correct Use

    SECTION CORRECT...

  • Page 65: Preparing For Work Before First Use

    SECTION 4 4.1 PREPARING FOR WORK BEFORE FIRST USE The manufacturer guarantees that PRONAR T902 trailer is fully operational and has been checked according to quality control procedures and is ready for use. This does not release the user from an obligation to check the machine's condition after delivery and before the first use.
  • Page 66 SECTION 4 Pronar T902 conducted by two people, one of which should always remain in the tractor cab. Inspection should involve the following actions: • after hitching the trailer, raise the drawbar support, • check correct operation of the lighting system by turning on individual lights of the trailer, •...

  • Page 67: Checking The Trailer's Technical Condition

    Pronar T902 SECTION 4 4.2 CHECKING THE TRAILER'S TECHNICAL CONDITION When preparing the trailer for normal use, check individual elements according to guidelines presented in table (4.1). TABLE 4.1 TECHNICAL INSPECTION SCHEDULE FREQUENCY DESCRIPTION SERVICE OPERATION INSPECTIONS Hitch the trailer to the tractor and test Operation of brake system the brakes after moving off.

  • Page 68: Hitching To Tractor

    SECTION 4 Pronar T902 IMPORTANT! The trailer must not be used when not in working order. Prior to connecting hydraulic system lines the user must carefully read the tractor operator's manual and observe all recommendations of the Manufacturer. 4.3 HITCHING TO TRACTOR The trailer may be hitched to the tractor only if all connections and the hitch are according to the requirements of the trailer's Manufacturer.
  • Page 69 Pronar T902 SECTION 4 DANGER When hitching, there must be nobody between the trailer and the tractor. When hitching the machine, the tractor driver must exercise particular caution and make sure that nobody is present in the hazard zone. Prior to hitching the trailer, check technical condition of the trailer's and tractor's hitch system and connection elements of the electrical, hydraulic and pneumatic systems.

  • Page 70: Trailer Support Operation

    SECTION 4 Pronar T902 Connect the electric lead of the lighting and signalling system. Connect the hydraulic conduits of the tailgate (marked black). Connect the hydraulic conduits of the sliding wall (marked blue). Connect the hydraulic conduits of the side hinged wall (marked green).
  • Page 71 Pronar T902 SECTION 4 FIGURE 4.1 Support leg (1) support (2) support foot, (3) crank of mechanism, (4) gear, (5) securing pin, (A) neutral position, (B) I gear position, (C) II gear position Lowering the support Remove safety pin. Set crank in position (B) or (C).

  • Page 72: Loading

    SECTION 4 Pronar T902 IMPORTANT! Do NOT park a loaded trailer, which is disconnected from the tractor and resting on the support. Before moving off, make sure that the support is folded and locked in transport position. 4.4 LOADING Load box can be loaded only when the trailer is connected to the tractor and positioned horizontally.
  • Page 73 Pronar T902 SECTION 4 FIGURE 4.2 Side hinged wall (1) left hinged wall, (2) locking mechanism, (3) opening/closing mechanism Due to the various density of materials, using the total load box capacity may cause exceeding permissible carrying capacity of the trailer. Guideline specific weight of selected materials is shown in table (4.2).
  • Page 74 SECTION 4 Pronar T902 TABLE 4.2 GUIDELINE WEIGHTS BY VOLUME OF SELECTED LOADS VOLUME WEIGHT TYPE OF MATERIAL KG/M Root crops: raw potatoes 700 - 820 steamed crushed potatoes 850 - 950 dried potatoes 130 - 150 sugar beet - roots...
  • Page 75 Pronar T902 SECTION 4 VOLUME WEIGHT TYPE OF MATERIAL KG/M straw litter and bulk feeds meadow hay dried in the swath 10 - 18 hay wilted in the swath 15 - 25 hay in gathering trailer (dry wilted) 50 - 80...
  • Page 76 SECTION 4 Pronar T902 VOLUME WEIGHT TYPE OF MATERIAL KG/M Concentrated feeds and mixed feeds: stored chaff 200 - 225 pressed cake 880 – 1,000 milled dry feed 170 - 185 mixed feeds 450 - 650 mineral mixtures 1,100 – 1,300...

  • Page 77: Unloading

    Source: "Technology of machine work in agriculture”, PWN, Warszawa 1985 4.5 UNLOADING The load box of Pronar T902 trailer is unloaded by shifting the front sliding wall backwards. The hydraulic mechanism of the sliding wall is used for automatic unloading of the trailer.
  • Page 78 SECTION 4 Pronar T902 FIGURE 4.3 Unloading the load box (1) load box, (2) sliding wall, (3) tailgate DANGER DO NOT unload the trailer on unstable surface. When closing the tailgate, take particular care as there is a risk of sustaining a serious injury.

  • Page 79: Transporting The Machine

    Pronar T902 SECTION 4 The load box tailgate is equipped with the grain chute – figure (4.4) for unloading loose materials. The width of the grain chute opening (1) can be adjusted during unloading. The nut on the securing clamp (3) must be loosened in order to open the grain chute gate.
  • Page 80 SECTION 4 Pronar T902 maximum carrying capacity must not be exceeded as this can damage the machine and pose a risk to the operator or other road users. • Permissible design speed and maximum speed allowed by road traffic law must not be exceeded.

  • Page 81: Disconnecting From Tractor

    Pronar T902 SECTION 4 • Speed must be sufficiently reduced before making a turn or driving on an uneven road or a slope. 4.7 DISCONNECTING FROM TRACTOR In order to disconnect the trailer from the tractor proceed as follows: Once the tractor is stopped, immobilise the trailer using parking brake. The brake is activated by means of the crank mechanism - see figure (3.14).
  • Page 82 SECTION 4 Pronar T902 • Inspect tightness of nuts before the first use of trailer, after the first travel under load and then every 6 months of use or every 25,000 km. In the event of intensive work, check the nut tightening at least every100 km. The inspection should be repeated individually if a wheel has been removed from the wheel axle.
  • Page 83 Pronar T902 SECTION 4 4.20...

  • Page 84: Maintenance

    SECTION MAINTENANCE...

  • Page 85: Preliminary Information

    Pronar T902 SECTION 5 5.1 PRELIMINARY INFORMATION When using the trailer, regular inspections of its technical condition are essential and the performance of maintenance procedures, 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 86: Initial Inspection Of Axle Brakes

    SECTION 5 Pronar T902 • changing brake linings, repairing brake, may be performed by specialist workshops. DANGER Do NOT use the trailer when brake system is unreliable. 5.2.2 INITIAL INSPECTION OF AXLE BRAKES, After purchasing trailer, the user is responsible for general checking of brake system of trailer axle.

  • Page 87: Checking Wheel Axle Bearings For Slackness

    Pronar T902 SECTION 5 5.2.3 CHECKING WHEEL AXLE BEARINGS FOR SLACKNESS: FIGURE 5.1 Lifting jack support point (1) wheel axle, (2) U bolt, (3) lower frame Preparation procedures Hitch trailer to tractor, immobilize tractor with parking brake. Park tractor and trailer on hard level ground.
  • Page 88 SECTION 5 Pronar T902 Checking wheel axle bearings for slackness Turning the wheel slowly in both directions check that movement is smooth and that the wheel rotates without excessive resistance. Turn the wheel so that it rotates very quickly, check that the bearing does not make any unusual sounds.

  • Page 89: Adjustment Of Slackness Of Wheel Axle Bearings

    Pronar T902 SECTION 5 Check condition of hub cover, if necessary replace with new cover. Inspection of bearing slackness may only be conducted, when the trailer is hitched to a tractor, and the load box is empty. 5.2.4 ADJUSTMENT OF SLACKNESS OF WHEEL AXLE BEARINGS FIGURE 5.2...

  • Page 90: Mounting And Dismounting Wheel, Inspection Of Wheel Nut Tightening

    SECTION 5 Pronar T902 Unscrew nut (not less than 1/3 rotation) to align the nearest thread groove with the opening in wheel axle pin. Wheel should rotate with insignificant resistance. Nut may not be excessively tightened. Do not apply excessive pressure because working conditions of the bearings may deteriorate.
  • Page 91 Pronar T902 SECTION 5 Place wheel on hub, tighten nuts so that wheel rim tightly fits the hub. Lower trailer, tighten nuts according to recommended torque and given sequence. Wheel nuts should be tightened using a torque of 570 Nm - nuts M22x1.5.

  • Page 92: Checking Air Pressure In Tyres Evaluating Technical Condition Of Tyres And Steel Wheels

    SECTION 5 Pronar T902 IMPORTANT! Wheel nuts must 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 pin. The greatest precision is achieved using a torque spanner. Before commencing work, ensure that correct tightening torque value is set.

  • Page 93: Mechanical Brakes Adjustment

    Pronar T902 SECTION 5 Air pressure in tyres should be checked each time after changing a spare wheel and at least once a month. In the event of intensive use, air pressure in tyres should be checked more frequently. During this time trailer must be unloaded. Checking should be done before travelling when tyres are not heated, or after an extended period of parking.
  • Page 94 SECTION 5 Pronar T902 FIGURE 5.4 Adjustment of axle mechanical brakes (1) expander arm, (2) expander shaft, (3) pin, (4) cylinder fork, (5) adjustment bolt If brakes are correctly adjusted, braking of trailer wheels takes place simultaneously. Brakes adjustment involves changing setting of axle shaft expander arm (1) in relation to expander shaft (2).

  • Page 95: Change Of Parking Brake Cable And Adjustment Of Cable Tension

    Pronar T902 SECTION 5 positioned in parallel with regard to each other at full braking. If this is not so, adjust the position of the lever, which has the longer stroke. Checking and adjustment of main brake: • every 12 months, •...
  • Page 96 SECTION 5 Pronar T902 FIGURE 5.5 Adjustment of parking brake cable tension (1) brake crank mechanism, (2) expander lever, (3) handle with wheel, (4) handbrake cable, (5) U-bolt clamp, (6) nuts of clamp Tighten cable (4) and tighten clamps. 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 97: Pneumatic System Maintenance

    Pronar T902 SECTION 5 Checking and/or adjustment of parking brake: • every 12 months, • if needed. 5.3 PNEUMATIC SYSTEM MAINTENANCE 5.3.1 PRELIMINARY INFORMATION Work connected with the repair, change or regeneration of system components (brake cylinders, lines, control valve, braking force regulator etc.) should be entrusted to specialist establishments, having the appropriate technology and qualifications for this type of work.
  • Page 98 SECTION 5 Pronar T902 In double conduit systems air pressure should amount to approx. 8 bar. Turn off tractor engine. Check system components by releasing brake pedal in tractor. Give particular attention to conduit connections and brake cylinders. Repeat the system check with depressed tractor brake pedal.

  • Page 99: Cleaning The Air Filters

    Pronar T902 SECTION 5 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 100: Draining Water From Air Tank

    SECTION 5 Pronar T902 Reduce pressure in supply conduit. Pressure in conduit can be reduced by pressing the head of the pneumatic connection until resistance is felt. Remove securing slide (1) – figure (5.6). Hold the filter cover (2) with the other hand. After removing slide lock, the cover is pushed off by the spring, in the filter housing.

  • Page 101: Cleaning The Drain Valves

    Pronar T902 SECTION 5 Required maintenance activities: Tilt the stem of drain valve (1) located in the lower part of tank (2) – the tank is located on brackets between longitudinal members of the lower frame. The compressed air in the tank causes the removal of water to the exterior.

  • Page 102: Cleaning And Maintaining Pneumatic Conduit Connections And Pneumatic Sockets

    SECTION 5 Pronar T902 Cleaning valves: • every 12 months (before winter period). 5.3.6 CLEANING AND MAINTAINING PNEUMATIC CONDUIT CONNECTIONS AND PNEUMATIC SOCKETS, DANGER Unreliable and dirty trailer connections may cause unreliability and faulty functioning of braking system. Damaged connection body or socket body should be replaced. In the event of damage to cover or seal, change these elements for new reliable elements.

  • Page 103: Hydraulic System Maintenance

    Pronar T902 SECTION 5 5.4 HYDRAULIC SYSTEM MAINTENANCE 5.4.1 PRELIMINARY INFORMATION Work connected with the repair, change or regeneration of hydraulic system components (shifting cylinders, tipping cylinders, valves etc.) should be entrusted to specialist establishments, having the appropriate technology and qualifications for this type of work.

  • Page 104: Checking Technical Condition Of Hydraulic Connections And Sockets

    SECTION 5 Pronar T902 Check cylinders and hydraulic conduits for tightness. In oil is found on hydraulic cylinder bodies ascertain origin of leak. Inspect seals when hydraulic cylinder is completely extended. Minimum leaks are permissible with symptoms of "sweating", however in the event of noticing leaks in the form of "droplets" stop using the trailer until faults are remedied.

  • Page 105: Maintenance Of Electrical System And Warning Elements

    Pronar T902 SECTION 5 5.5 MAINTENANCE OF ELECTRICAL SYSTEM AND WARNING ELEMENTS 5.5.1 PRELIMINARY INFORMATION Work connected with the repair, change or regeneration of electrical system components should be entrusted to specialist establishments, having the appropriate technology and qualifications for this type of work.

  • Page 106: Changing Bulbs

    SECTION 5 Pronar T902 IMPORTANT! Do NOT travel with out of order lighting system. Damaged lamp lenses, and burned-out bulbs must be replaced immediately before travelling. Lost or damaged reflective lights must be replaced. 5.5.2 CHANGING BULBS Compatible bulbs are shown in table (5.3). All light lenses are secured by screws and it is not necessary to dismantle whole lamp or trailer subassemblies.
  • Page 107 Pronar T902 SECTION 5 careful washing and inspection, mount lubricated elements. If necessary, bearing and seals should be replaced with new parts. Lubrication of axle bearings shall be performed at least once in 2 years or every 50,000 km. In the event of intensive use, lubrication should be performed more frequently.
  • Page 108 SECTION 5 Pronar T902 NUMBER TYPE OF LUBRICATION POINTS FREQUENCY LUBRICATI GREASE ON POINTS Pin of press down cylinder Bearings of tailgate rising cylinder Pins of conduit arm Lever and string of chute Chute slide gate guides Telescopic support Steering mechanism string...
  • Page 109 Pronar T902 SECTION 5 NUMBER TYPE OF LUBRICATION POINTS FREQUENCY LUBRICATI GREASE ON POINTS Connection pin Leaf spring sliding surface Leaf spring shock absorber Stub axle pin Lubrication periods – M months, D – days Recommended lubricants: A - machine general-purpose grease (lithium, alkaline),...
  • Page 110 SECTION 5 Pronar T902 FIGURE 5.8 Lubrication points - chassis 5.27...
  • Page 111 Pronar T902 SECTION 5 FIGURE 5.9 Trailer's lubrication points 5.28...
  • Page 112 SECTION 5 Pronar T902 FIGURE 5.10 Lubrication points – sliding wall 5.29...

  • Page 113: Consumables

    Pronar T902 SECTION 5 5.7 CONSUMABLES 5.7.1 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 114: Lubricants

    SECTION 5 Pronar T902 with the use of carbon dioxide, foam or extinguisher steam. Do not use water to quench oil fires. 5.7.2 LUBRICANTS For parts under great load it is recommended to apply lithium grease with molybdenum disulphide (MOS ) or graphite additive.
  • Page 115 Pronar T902 SECTION 5 • Do not direct water stream directly at system elements and equipment of the trailer i.e. control valve, braking force regulator, brake cylinders, pneumatic, electric and hydraulic plugs, lights, electrical connections, information and warning decals, identification plate, conduit connections and lubrication points etc.

  • Page 116: Storage

    SECTION 5 Pronar T902 • Observe environmental protection principles and wash trailer in a place designed for this purpose. • Washing and drying trailer must take place at temperatures above 0°C. • After washing and drying, trailer should be greased at all control points regardless of last lubrication period.
  • Page 117 Pronar T902 SECTION 5 TABLE 5.5 Tightening torque for nut and bolt connections 10.9 THREAD METRIC Md [Nm] 1,050 1,150 1,650 1,050 1,450 2,100 – resistance class according to DIN ISO 898 standard FIGURE 5.11 Bolt with metric thread (1) resistance class, (d) thread diameter Hydraulic conduits should be tightened using torque of 50 –...

  • Page 118: Setting And Adjusting The Limit Valves

    Pronar T902 5.11 SETTING AND ADJUSTING THE LIMIT VALVES Pronar T900 trailer is equipped with two limit valves. Position of these valves in the front wall sliding system is shown in figure (3.3). The adjustment of limit valve (1) is performed by means of bolt (2) when the sliding wall is maximally extended.

  • Page 119: Adjustment Of Drawbar Position

    Pronar T902 SECTION 5 5.12 ADJUSTMENT OF DRAWBAR POSITION Drawbar position can be adjusted by changing the position of the rocker arm lug (5) with regard to drawbar fixing plate (3) to a proper height. To do this, proceed as follows: Adjustment of drawbar height Immobilise trailer with parking brake.

  • Page 120: Wheel Steering System

    SECTION 5 Pronar T902 Lower the lifting jack. Check degree of drawbar tightening after first travel under load. Drawbar position can be also adjusted by relocating the rocker arm pin (7) to one of the three openings in leaf spring rocker arm (4) in order to achieve various height settings. The mounting height and position of the drawbar should be individually matched to tractor hitch.
  • Page 121 (6) hydraulic pump, (7) valve, (8) pressure gauge, (9) pump lever, (A) closed position, (B) opened position In order to ensure proper operation of the hydraulic steering system and safe use of Pronar T902 trailer, suitable and certified tractor hitches with dimensions shown in figure (5.14) according to ISO 26402:2008 should be used.

  • Page 122: Troubleshooting

    SECTION 5 Pronar T902 5.13 TROUBLESHOOTING TABLE 5.6 Troubleshooting FAULT CAUSE REMEDY Brake system pneumatic Connect brake conduits. conduit not connected Damaged pneumatic Replace conduits with new ones. system connection conduits Tighten, replace washers or seal Leaking connections set. Parking brake applied Release parking brake.
  • Page 123 Pronar T902 SECTION 5 FAULT CAUSE REMEDY Damaged quick couplers of Replace quick couplers. hydraulic system lines Damaged or non-adjusted limit valve of hydraulic Check, adjust or possibly replace. system Check oil quality, make sure that Improper hydraulic oil the oil in both machines is of the viscosity same type.
  • Page 124 NOTES …………………………………………………………………………………………………………… …………………………………………………………………………………………………………… …………………………………………………………………………………………………………… …………………………………………………………………………………………………………… …………………………………………………………………………………………………………… …………………………………………………………………………………………………………… …………………………………………………………………………………………………………… …………………………………………………………………………………………………………… …………………………………………………………………………………………………………… …………………………………………………………………………………………………………… …………………………………………………………………………………………………………… …………………………………………………………………………………………………………… …………………………………………………………………………………………………………… …………………………………………………………………………………………………………… …………………………………………………………………………………………………………… …………………………………………………………………………………………………………… …………………………………………………………………………………………………………… …………………………………………………………………………………………………………… …………………………………………………………………………………………………………… …………………………………………………………………………………………………………… …………………………………………………………………………………………………………… …………………………………………………………………………………………………………… …………………………………………………………………………………………………………… ……………………………………………………………………………………………………………...
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  • Page 126 ANNEX A Tire sizes TRAILER VERSION FRONT/REAR AXLE 550/60 – 22.5 171 A8 T902 600/55 – 22.5 16P R 700/50 – 26.5 174 A8 - disc wheel 16x22.5” ET=0 - disc wheel 16x22.5” ET=-20 - disc wheel 24x26.5 ET=-50...