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PRONAR T679/3 Operator'S Manual Download Page 84

PRONAR T679/3   PRONAR T679/4 

SECTION 5 

5.10 

During  use  of  trailer,  friction  lining  of  brake  drums  is  subject  to  wear.  In  such  a  case,  the 

complete brake shoes should be replaced with new ones. 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  rod  stroke.  Check  technical  condition  of  brake  shoe  linings  through  inspection 

openings (3) – figure (5.5). 

5.2.7  MECHANICAL BRAKES ADJUSTMENT 

Preliminary information 

Considerable  wear  of  brake  shoe  linings  results  in  increased  brake  cylinder  rod  stroke  and 

worse braking efficiency. 

 

FIGURE 5.6 

Design of pneumatic wheel axle brake 

(1) expander arm, (2) expander shaft, (3) fork pin, (4) brake cylinder, (5)  cylinder rod, (6) cylinder fork 

 

Summary of Contents for T679/3

Page 1: ...D Phone 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 OPERATOR S MANUAL TRAILER PRONAR T679 3 PRONAR T679 4 TRANSLATION OF THE ORIGINAL DOCUMENT ISSUE 2A 06 2016 PUBLICATION NO 537N 00000000 UM EN ...

Page 2: ......

Page 3: ...ine Before using the machine the user must carefully read this Operator s Manual and observe all recommendations This guarantees safe operation and ensures malfunction free work of the machine 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 T679 3 T679 4 trailer If the inform...

Page 4: ...nstructions the observance of which is essential are indicated with the sign and preceded by the word ATTENTION Failure to observe the instructions may lead to damage to the machine as a result of improper operation adjustment or use In order to focus the user s attention on the need to perform periodical maintenance the relevant section of the Operator s Manual is indicated with the sign Addition...

Page 5: ... 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 6: ......

Page 7: ...NSPORT ON VEHICLE 1 11 1 5 2 INDEPENDENT TRANSPORT BY THE USER 1 13 1 6 ENVIRONMENTAL HAZARDS 1 14 1 7 WITHDRAWAL FROM USE 1 15 2 SAFETY ADVICE 2 1 2 1 SAFETY INFORMATION 2 2 2 1 1 BASIC SAFETY RULES 2 2 2 1 2 DRIVING ON PUBLIC ROADS 2 6 2 1 3 DESCRIPTION OF RESIDUAL RISK 2 7 2 2 INFORMATION AND WARNING DECALS 2 8 3 DESIGN AND OPERATION 3 1 3 1 TECHNICAL SPECIFICATION 3 2 3 2 TRAILER CONSTRUCTION ...

Page 8: ...USE 4 4 4 2 HITCHING AND UNHITCHING THE TRAILER 4 5 4 2 1 HITCHING AND UNHITCHING THE SECOND TRAILER 4 7 4 3 LOADING AND SECURING LOAD 4 9 4 3 1 GENERAL INFORMATION ABOUT LOADING 4 9 4 3 2 SECURING LOAD 4 10 4 4 TRANSPORTING LOADS 4 13 4 5 UNLOADING 4 15 4 6 PROPER USE AND MAINTENANCE OF TYRES 4 18 5 MAINTENANCE 5 1 5 1 PRELIMINARY INFORMATION 5 2 5 2 MAINTENANCE OF WHEEL AXLE 5 2 5 2 1 PRELIMINAR...

Page 9: ...ANK 5 22 5 4 2 CLEANING DRAIN VALVE 5 22 5 4 3 CLEANING AND MAINTAINING PNEUMATIC CONDUIT CONNECTIONS AND PNEUMATIC SOCKETS 5 23 5 5 HYDRAULIC SYSTEM MAINTENANCE 5 24 5 5 1 PRELIMINARY INFORMATION 5 24 5 5 2 CHECKING HYDRAULIC SYSTEM TIGHTNESS 5 24 5 5 3 CHECKING TECHNICAL CONDITION OF HYDRAULIC CONNECTIONS AND SOCKETS 5 25 5 5 4 REPLACEMENT OF HYDRAULIC CONDUITS 5 25 5 6 LUBRICATION 5 26 5 6 1 CO...

Page 10: ...5 12 TROUBLESHOOTING 5 37 5 12 1 TROUBLESHOOTING 5 37 ...

Page 11: ...SECTION 1 BASIC INFORMATION ...

Page 12: ...9 4 Pronar T679 3 and Pronar T679 4 agricultural trailers are marked with the data plate 1 vehicle identification number VIN 2 for T679 3 trailer and vehicle identification number VIN 3 for T679 4 trailer The serial number and data plate are located on the right side of the frame front beam figure 1 1 When buying the agricultural trailer check that the serial numbers on the machine agree with the ...

Page 13: ...ng capacity I Permissible hitching system loading J Permissible front axle load K Permissible rear axle load 1 1 2 HALF AXLE IDENTIFICATION The serial number of the half axle and its type are stamped onto data plate 3 secured to half axle shield 2 Two half axles connected permanently with a beam form suspension system rocker 1 figure 1 2 TIP In the event of ordering a replacement part or in the ca...

Page 14: ...xle 3 data plate 1 1 3 LIST OF SERIAL NUMBERS TABLE 1 2 List of serial numbers VIN S Z B 6 7 9 X X HALF AXLE SERIAL NUMBER 1 2 INTENDED USE The trailer is designed for transporting and unloading heavy materials such as debris stones rubble gravel used during construction the earthworks demolition on the farm and ...

Page 15: ...tractors which fulfil all the requirements specified in table 1 4 DANGER The trailer must not be used for purposes other than those for which it is intended in particular for transporting people and animals for transporting hazardous loads or loads which are not properly secured against shifting or falling out for transporting loads which are unevenly distributed and or which overload half axles a...

Page 16: ...gulations and transport regulations in force in a given country in which the machine is used carefully read the Operator s Manual and comply with its recommendations only hitch the trailer to an agricultural tractor which fulfils all the requirements made by the trailer s Manufacturer TABLE 1 4 Agricultural tractor s requirements CONTENTS UNIT REQUIREMENTS Brake system connection sockets Single co...

Page 17: ...er Detailed information may be found on the product information card The machine may only be used by persons who are familiar with the contents of this publication and with the contents of the agricultural tractor Operator s Manual have been trained in trailer operation and safe operation have the required authorisation to drive and are familiar with the road traffic regulations and transport regu...

Page 18: ...1 1 5 8 6 5 6 5 150 Hydraulic tipper system Hydraulic oil Maximum system pressure bar L HL 32 Lotos 1 200 20 Electrical system Electrical system voltage Connection socket V 12 7 pole compliant with ISO 1724 Drawbar of trailer Diameter of drawbar eye mm 40 1 use of other oil is permitted on condition that it may be mixed with the oil in the trailer Detailed information may be found on the product i...

Page 19: ...braking system Hydraulic brake system Hydraulic tipper system Hydraulic hinged tailgate Hinged opening tailgate Parking brake Lighting system LED 12V Lights support beams with rear lamp shields Slow moving vehicle warning sign Load box service support 800mm load box extensions Mechanical telescopic drawbar support Load box ladder Front canopy of load box Warning reflective triangle Wheel chocks ...

Page 20: ...sed according to its intended purpose as described in the OPERATOR S MANUAL The repair period is specified in the WARRANTY BOOK The warranty does not cover 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 pneumatic system connector filters ...

Page 21: ...ments of the machine which have a direct impact on the machine operation safety 1 5 TRANSPORT The machine is prepared for sale completely assembled and does not require packing Packing is only required for the machine s technical documentation and any extra fittings The agricultural trailer is delivered to the user either transported on a vehicle or after being attached to a tractor independently ...

Page 22: ...he machine in a proper manner use transport lugs 1 figure 1 3 and fasten half axles lower longitudinal members of the frame and possibly drawbar elements Chocks wooden blocks or other objects without sharp edges should be placed under the wheels of the trailer to prevent it from rolling Wheel blocks must be nailed to the vehicle load platform planks or secured in another manner preventing their mo...

Page 23: ...straps from breaking during transport ATTENTION 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 Driver of the vehicle should be particularly careful during travel Centre of gravity of the vehicle transporting the machine is shifted upwards which poses a threat to stability ...

Page 24: ...l leak this work should take place on an oil resistant floor or surface In the event of oil leaking into the environment first of all contain the source of the leak and then collect the leaked oil using available means Remaining oil should be collected using sorbents or by mixing the oil with sand sawdust or other absorbent materials The oil pollution once gathered up should be kept in a sealed ma...

Page 25: ...dismantle equipment oil shall be completely removed from hydraulic system Worn out or damaged parts that cannot be reclaimed should be taken to a collection point for recyclable raw materials Hydraulic oil should be taken to the appropriate facility dealing with the re use of this type of waste DANGER During dismantling use the appropriate tools equipment overhead travelling crane crane or hoist e...

Page 26: ...PRONAR T679 3 PRONAR T679 4 SECTION 1 1 16 ...

Page 27: ...SECTION 2 SAFETY ADVICE ...

Page 28: ...or using this machine should be the application of safety rules and sensible behaviour The trailer must never be used by persons who are not authorised to drive agricultural tractors including children and people under the influence of alcohol or other drugs Non compliance with the safety rules of this Operator s Manual can be dangerous to the health and life of the operator and others The trailer...

Page 29: ...le driving scattering of the load and danger while working or driving Before each use of the trailer check the technical condition of the trailer and tractor hitching system and connection elements of the braking system and electrical system Exercise caution when connecting and disconnecting machine from the tractor Do NOT couple a second trailer if it does not fulfil the requirements specified by...

Page 30: ...l contact a doctor immediately Hydraulic oil may find its way under the skin and cause infections Use the hydraulic oil recommended by the Manufacturer Never mix two types of oil After changing the hydraulic oil the used oil should be properly disposed of When working on the tyres chocks or other objects without sharp edges should be placed under the wheels of the trailer to prevent it from rollin...

Page 31: ...disinfected In the event of more serious injuries seek a doctor s advice Repair maintenance and cleaning work should be carried out with the tractor engine turned off and the ignition key removed Regularly check the condition of the bolt and nut connections Before welding or electrical work the trailer should be disconnected from the power supply During the warranty period any repairs may only be ...

Page 32: ...ing maintaining or cleaning the machine 2 1 2 DRIVING ON PUBLIC ROADS Comply with the road traffic regulations Exceeding the maximum load capacity of the trailer may damage it and also threaten the safety of traffic Do not exceed the maximum speed limit Adjust driving speed to the road conditions FIGURE 2 1 Mounting place for the slow moving vehicle warning sign 1 slow moving vehicle warning sign ...

Page 33: ...to an accident and this is connected mainly with the actions described below using trailer for purposes other than those described in the Operator s Manual being between the tractor and the trailer while the engine is running and when the machine is being attached operation of the trailer by persons under the influence of alcohol or other intoxicating substances operation of the trailer by unautho...

Page 34: ...re clear and legible In the event of their destruction they must be replaced with new ones 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 35: ...fe distance from electric power lines during unloading 58N 0000020 4 Regularly check if the nuts and bolts fixing the wheels and other components are properly tightened 104N 00000006 5 Grease the machine according to the recommendations in the OPERATOR S MANUAL 104N 00000004 6 Danger of crushing Do NOT perform any maintenance or repairs on the load box that is loaded raised or not supported 58N 00...

Page 36: ...79 3 PRONAR T679 4 SECTION 2 2 10 ITEM SYMBOL MEANING 7 Danger of crushing Maintain a safe distance during opening and closing the tailgate 96N 00000006 8 Machine type 537N 00000001 9 Machine type 537N 00000002 ...

Page 37: ...SECTION 2 PRONAR T679 3 PRONAR T679 4 2 11 FIGURE 2 2 Locations of information and warning decals ...

Page 38: ...PRONAR T679 3 PRONAR T679 4 SECTION 2 2 12 ...

Page 39: ...SECTION 3 DESIGN AND OPERATION ...

Page 40: ...aximum carrying capacity Maximum gross weight Tare weight Load surface kg kg kg m2 10 360 13 200 2 840 9 7 8 385 11 000 2 615 9 7 Other information Wheel track Maximum drawbar load Cargo capacity Height of platform from the ground Load box tipping angle to the rear Electrical system voltage Hydraulic oil demand Hydraulic system pressure Tractor power demand Maximum design speed Noise emission leve...

Page 41: ...is the bogie suspension system The trailing arms are attached to the frame by means of pins mounted in the slide bearings of lower frame 1 and trailing arms 9 The half axles are made from square bar ended with a pin on which the hub is mounted with the use of cone bearings The wheels are single and equipped with shoe brakes activated by mechanical cam expanders In the front part of the chassis the...

Page 42: ... Trailer chassis 1 lower frame 2 drawbar 3 mechanical support 4 wheel chocks 5 tipping cylinder socket 6 load box support 7 lights support beam 8 half axle 9 trailing arm 10 drawbar hitching eye 11 parking brake mechanism 12 rear hitch 13 conduit bracket ...

Page 43: ...es and shapes figure 3 2 In the side walls there are four fixing lugs 5 which ensure reliable fixing of loads In the rear part of the load box there is tailgate 2 which is opened and closed using a hydraulic cylinder The tailgate is opened downwards which allows easy loading and unloading of construction vehicles The trailer can be optionally equipped with a hinged opening tailgate 4 which makes i...

Page 44: ...l grade is stamped on the rear left stake while tailgate code is stamped on the left tailgate profile The codes are explained below 235 S235 alloy steel 450 HARDOX 450 steel 3 2 3 MAIN BRAKE Depending on the version of the trailer the machine is equipped with one of two types of service brake double conduit pneumatic system figure 3 4 hydraulic braking system figure figure 3 5 The service brake pn...

Page 45: ...d diagram of hydraulic brake system 1 hydraulic cylinder 2 quick coupler socket 3 plug for the second trailer option 4 information decal TABLE 3 2 List of symbols used in the schemes SYMBOL OPIS Pneumatic connection plug Pneumatic connection socket Drainage valve ...

Page 46: ...valve automatically applies the machine s brake applies only to pneumatic systems The valve used has a brake release button 3 used when the trailer is disconnected from the tractor After connecting the air line to the tractor the release device automatically adjusts to the position enabling normal operation of the brakes The three band braking force regulator figure 3 5 used in pneumatic systems a...

Page 47: ...ing system serves for automatic unloading of trailer by tipping the load box to the rear The hydraulic tipping system is supplied with oil from the tractor s hydraulic system Hydraulic oil selective control valve of the tractor s external hydraulic system is used to control the load box tipping mechanism The trailer system consists of two independent circuits circuit A to supply the trailer s hydr...

Page 48: ... way valve 3 cut off valve 4 quick coupler 5 socket 6 control cable 7 guide roller 8 9 information decal Three way valve 2 figure 3 4 is used to activate these circuits This valve s lever can be placed in two positions 1 the trailer s tipping circuit is opened circuit A 2 the second trailer s tipping circuit is opened circuit B ...

Page 49: ...ing angle of the load box when tipped to the rear The length of the control cable 6 controlling this valve is factory adjusted by the Manufacturer and must not be changed when the trailer is used TIP The hydraulic system of the trailer is filled with L HL32 Lotos hydraulic oil 3 2 5 TAILGATE HYDRAULIC SYSTEM FIGURE 3 7 Design of the hydraulic system of the tailgate 1 hydraulic cylinder 2 quick cou...

Page 50: ...n proper sockets of the tractor s hydraulic manifold The system is supplied with oil from the tractor s hydraulic system Hydraulic oil manifold of the tractor s external hydraulic system is used to control the tailgate rising 3 2 6 PARKING BRAKE FIGURE 3 8 Parking brake design 1 brake mechanism 2 expander lever 3 left cable 4 right cable The parking brake is used for immobilising the trailer while...

Page 51: ...to brake Before driving off parking brake must be released turn the crank counterclockwise steel cables must hang loose and must not exert pressure on expander levers 3 2 7 ELECTRIC LIGHTING SYSTEM FIGURE 3 9 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 31 Weight 54 Power supply 12V L Lef...

Page 52: ...t 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 Connection of the trailer s electrical system with the tractor should be made through an appropriate connection lead delivered as standard equipment of the machine ...

Page 53: ...SECTION 3 PRONAR T679 3 PRONAR T679 4 3 15 Arrangement of electrical system components and connection diagram of the connection socket are shown in figures 3 7 and 3 8 ...

Page 54: ...PRONAR T679 3 PRONAR T679 4 SECTION 3 3 16 ...

Page 55: ...SECTION 4 CORRECT USE ...

Page 56: ...seller about the method of use of the machine risks resulting from the use for purposes other than intended the method of the machine hitching and the principles of the machine construction and design Detailed information concerning the machine hand over are included in the WARRANTY BOOK Checking the trailer after delivery Check completeness of the machine according to order Check technical condit...

Page 57: ... all the recommendations contained in it Adapt the height of the trailer drawbar to the tractor hitch Visually inspect the trailer according to the guidelines presented in section PREPARING THE TRAILER FOR NORMAL USE Hitch machine to tractor Immobilise tractor with parking brake Test start Check all the trailer s lubrication points lubricate the machine as needed according to recommendations provi...

Page 58: ...a fault cannot be rectified or the repair could void the warranty please contact retailer for additional clarifications or to perform the repair 4 1 4 PREPARING THE TRAILER FOR NORMAL USE DANGER Careless and improper use and operation of the trailer and non compliance with the recommendations given in this operator s manual is dangerous to your health The machine must never be used by persons who ...

Page 59: ...ailer to appropriate hitch on tractor check hitch lock protecting machine against accidental unhitching If the agricultural tractor is equipped with an automatic coupler ensure that the hitching operation is completed and that drawbar eye is secured Turn off tractor engine Ensure that unauthorised persons do not have access to the tractor cab Connect the braking system conduits If the trailer is e...

Page 60: ...re that nobody is present in the hazard zone When connecting the hydraulic or pneumatic conduits to the tractor make sure that the hydraulic and pneumatic systems of the tractor and the trailer are not under pressure Ensure sufficient visibility during hitching After completion of hitching check the security of the hitching pin Exercise caution when unhitching the trailer from the tractor Ensure g...

Page 61: ...le conduit pneumatic system first disconnect the black conduit Disconnect hydraulic conduit of the hydraulic braking system from the section of the manifold of the tractor s external hydraulic system Protect conduit ends with covers Place conduit plugs in appropriate sockets Release tractor hitch drive tractor away from the trailer 4 2 1 HITCHING AND UNHITCHING THE SECOND TRAILER A second trailer ...

Page 62: ...is completed and that drawbar eye of the second trailer is secured Insert drawbar pin and securing cotter pin Connect conduits of hydraulic system and pneumatic system and electrical leads according to instructions contained in section 4 2 DANGER When hitching there must be nobody between the trailers Person assisting in hitching the machines should stand outside the area of danger and be visible ...

Page 63: ...ting and unloading heavy materials such as debris stones rubble gravel used during construction the earthworks demolition on the farm and on public roads Load box design enables loading and transportation of machinery and construction vehicles The trailer must be positioned to travel forwards and be hitched to the tractor Loading should only take place when trailer is placed on flat level surface ...

Page 64: ...s in good condition which are attached to transport lugs When driving on public roads the hydraulic tailgate or hinged opening tailgate must be folded The load must be arranged in such a way that it does not threaten the stability of the trailer and does not hinder driving Loading should be carried out by a person having appropriate authorisation for operating the equipment if required 4 3 2 SECUR...

Page 65: ...ideline specific weight of selected materials is shown in table 4 1 Take care not to overload the trailer TABLE 4 1 Guideline weights by volume of selected loads TYPE OF MATERIAL WEIGHT BY VOLUME KG M3 Building materials cement dry sand wet sand solid bricks hollow bricks stones soft wood hard sawn timber impregnated timber steel structures milled burnt lime cinders gravel rubble 1 200 1 300 1 350...

Page 66: ...feeds stored chaff pressed cake milled dry feed mixed feeds mineral mixtures ground oats wet sugar beet pulp pressed sugar beet pulp dry sugar beet pulp bran bone meal pasture salt molasses silage pit silo hay silage tower silo 200 225 880 1 000 170 185 450 650 1 100 1 300 380 410 830 1 000 750 800 350 400 320 600 700 1 000 1 100 1 200 1 350 1 450 650 1 050 550 750 Seeds and grains beans mustard p...

Page 67: ...e key guidelines for driving the tractor and trailer combination Before moving off make sure that there are no bystanders especially children near the trailer or the tractor Take care that the driver has sufficient visibility Make sure that the trailer is correctly attached to the tractor and tractor s hitch is properly secured Vertical load borne by the trailer drawbar eye affects the steering of...

Page 68: ...ith a certified or authorised reflective warning triangle When driving comply with all road traffic regulations indicate an intention to turn using indicator lamps keep all road lights and indicator lights clean at all times and ensure they are in good condition Any damaged or lost lamps or indicator lights must be immediately repaired or replaced Avoid ruts depressions ditches or driving on roads...

Page 69: ... Tipping of the load box is controlled from driver s cab using external tractor hydraulic system selective control valve The trailer must be positioned to travel forwards and be hitched to the tractor Unloading should only take place when the trailer is placed on flat level surface and hitched to tractor DANGER Ensure that during unloading nobody is in the vicinity of the unloading zone During wor...

Page 70: ...ured by means of pin 6 and cotter pin 7 figure 4 3 If necessary the slot size can be adjusted by changing the length of chains 4 FIGURE 4 2 Unloading load box with hydraulic tailgate 1 hydraulic tailgate 2 load box 3 telescopic cylinder place the control lever of the hydraulic tipping system circuits in position 1 tipping of the first trailer using the manifold lever in the operator cab tip the lo...

Page 71: ...lgate 1 hydraulic tailgate 2 load box 3 telescopic cylinder 4 chain 5 chain catch left 6 catch pin 7 cotter pin 8 pin In case of the trailer with hinged opening tailgate construction materials and construction equipment can be loaded and unloaded by opening the hatch 1 to the right side of the trailer To do this remove pin 8 together with securing cotter pin and open the hatch It is permissible to...

Page 72: ... 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 The inspection should be repeated individually if a wheel has been removed from the wheel axle Wheel nuts should be tightened according to...

Page 73: ...ed When the trailer is operated all day stop working for a minimum of one hour in the afternoon Adhere to 30 minutes rest for cooling tyres after driving 75 km or after 150 minutes continuous travel depending on which occurs first Avoid potholes sudden manoeuvres or high speeds when turning ...

Page 74: ...PRONAR T679 3 PRONAR T679 4 SECTION 4 4 20 ...

Page 75: ...SECTION 5 MAINTENANCE ...

Page 76: ...section In the event of unauthorised repairs changes to factory settings and other actions which are not regarded as possible for the trailer operator to perform the user shall invalidate the warranty 5 2 MAINTENANCE OF WHEEL AXLE 5 2 1 PRELIMINARY INFORMATION Work connected with the repair change or regeneration of axle components should be entrusted to specialist establishments having the approp...

Page 77: ...rvice stations 5 2 2 CHECKING SLACKNESS OF WHEEL AXLE BEARINGS FIGURE 5 1 Lifting jack support point 1 suspension system rocker 2 half axle Preparation procedures Hitch trailer to tractor immobilize tractor with parking brake Park the trailer on hard level ground Tractor must be placed to drive forward Place chocks under the trailer s wheel that will not be raised Ensure that machine will not move...

Page 78: ...ove and below try to feel any slackness You may use a lever placed under the wheel supporting the other end on the floor Lower the lifting jack relocate the chocks to the other wheel and repeat the inspection procedure for the other wheels TIP If hub cover is damaged or missing contamination and dampness enter the hub which causes significantly faster wear of bearing and hub seals Bearing life is ...

Page 79: ...the manufacturer s instructions The lifting jack must be stably supported on the ground and the suspension system rocker Make certain that the lifting jack is positioned in the rocker s axis of rotation and that the trailer shall not move during inspection of half axle bearing slackness 5 2 3 ADJUSTMENT OF SLACKNESS OF WHEEL AXLE BEARINGS The wheel should turn smoothly without stiffness or detecta...

Page 80: ...te Secure castellated nut with cotter pin and mount hub cap Delicately tap hub cap with rubber or wooden hammer 5 2 4 MOUNTING AND DISMOUNTING WHEEL INSPECTION OF WHEEL NUT TIGHTENING Dismounting wheel Place chocks under wheel that will not be dismounted Ensure that trailer shall not move during wheel dismounting Loosen wheel nuts according to the sequence shown in figure 5 4 Place lifting jack an...

Page 81: ...hub tighten nuts so that wheel rim tightly fits the hub Lower trailer tighten nuts according to recommended torque and given sequence Tightening nuts Nuts should be tightened gradually diagonally in several stages until obtaining the required tightening torque using a torque spanner Tightening of nuts should be checked with the frequency given in the below table The activities should be repeated a...

Page 82: ...sure values are specified in information decal placed on wheel or on the frame above machine wheel Tyre pressure should be checked each time after changing spare wheel and not less than every month In the event of intensive use air pressure in tyres should be checked more frequently During this time the trailer must be unloaded Checking should be done before travelling when tyres are not heated or...

Page 83: ...rrosion especially in the area of welds and contact with tyre INSPECTION Every month of use Every week during intensive work 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 TIP Minimum thickness of brake shoe linings is 2 mm ...

Page 84: ...es of brake shoes is smaller than the minimum value This condition is indicated by extended cylinder rod stroke Check technical condition of brake shoe linings through inspection openings 3 figure 5 5 5 2 7 MECHANICAL BRAKES ADJUSTMENT Preliminary information Considerable wear of brake shoe linings results in increased brake cylinder rod stroke and worse braking efficiency FIGURE 5 6 Design of pne...

Page 85: ...res 5 8 and 5 9 ATTENTION Incorrectly adjusted brake may cause rubbing of brake shoes against brake drums which may lead to faster wear of brake linings and or brake overheating FIGURE 5 7 Design of hydraulic wheel half axle brake 1 expander arm 2 expander shaft 3 fork pin 4 brake cylinder 5 cylinder rod 6 cylinder fork Braking force decreases also when the operating angle of the brake cylinder ro...

Page 86: ... parking If the brake cylinder rod stroke exceeds the maximum value 45 mm the braking system should be adjusted Required maintenance activities for pneumatic brakes Hitch trailer to tractor Turn off tractor engine and remove key from ignition Immobilise tractor with parking brake Make sure that the trailer s brakes are not engaged Secure the trailer with wheel chocks Make a line A on the brake cyl...

Page 87: ...in 6 brake cylinder bracket A mark on the brake cylinder at brake release position B mark on the brake cylinder at full braking position C position of arm at brake release position D position of arm at full braking position Check if the brake cylinder vent holes are not blocked with impurities and that there is no water or ice inside the brake cylinder Check if the brake cylinder is correctly inst...

Page 88: ...ith cotter pins Repeat the adjustment activities for the second half axle Engage the brake Remove previous marks and measure the brake cylinder rod stroke again If the brake cylinder rod stroke is outside the proper operating range repeat the adjustment TABLE 5 2 Position of pin in expander arm TRAILER MODEL FRONT HALF AXLES REAR HALF AXLES T679 3 L1 175 175 T679 4 L2 150 150 The hydraulic braking...

Page 89: ...position B mark on the brake cylinder at full braking position C position of arm at brake release position D position of arm at full braking position 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 Each time when dismantling the pin or brake cylinder the original ...

Page 90: ...ke and the correct brake cable tension FIGURE 5 10 Disassembly of the parking brake cable 1 brake mechanism 2 cable 3 fork pin 4 nut 5 mechanism pin Replacing the parking brake cable Hitch trailer to tractor Park machine and tractor on level surface Prevent the trailer from rolling by placing chocks under the wheels Immobilise tractor with parking brake Fully unscrew the bolt of the handbrake mech...

Page 91: ...railer from rolling by placing chocks under the wheels Immobilise tractor with parking brake Fully unscrew the bolt of the handbrake mechanism Loosen all nuts 2 figure 5 11 of handbrake cable clamps on the brake mechanism side Tighten cable and tighten clamps ATTENTION Parking brake cable clamps must be installed as shown in figure 5 11 i e clamp bracket 2 must be installed on the side of the shor...

Page 92: ...se of working and parking brake the cable would be loose Adjustment of parking brake cable tension should be conducted in the event of stretching of cable loosening of parking brake cable clamps after adjustment of axle brakes after repairs of axle brake system after repairs of parking brake system Before commencing adjustment make certain that the main break is correctly regulated and is function...

Page 93: ...on of the system cleaning the air filters draining water from air tank cleaning drain valve cleaning and maintaining pneumatic conduit connections DANGER Do NOT use the trailer when brake system is unreliable 5 3 2 CHECKING TIGHTNESS Checking air tightness of pneumatic system Hitch trailer to tractor Park machine and tractor on level surface Prevent the trailer from rolling by placing chocks under...

Page 94: ...recommended to supply preparations commercially available designed to facilitate detecting air leaks Damaged components should be replaced or repaired If leaks appear at connections then tighten the connections If air continues to escape replace connection components or seals INSPECTION After travelling the first 1 000 km Each time after making repairs or changing system components Every 12 months...

Page 95: ... 1 securing slide lock 2 air filter cover DANGER Before proceeding to dismantle filter reduce pressure in supply conduit While disengaging filter slide gate hold cover with other hand Stand away from filter cover vertical direction Required maintenance activities Reduce pressure in supply conduit Pressure in conduit can be reduced by pressing the head of the pneumatic connection until resistance i...

Page 96: ...f water to the exterior Released valve stem should automatically close and stop flow of air from the tank In the event that the valve stem resists returning to its setting then the whole drain valve must be unscrewed and cleaned or replaced if it is damaged see section CLEANING DRAIN VALVE 5 4 2 CLEANING DRAIN VALVE Required maintenance activities Completely reduce pressure in air tank Reduction o...

Page 97: ...In the event of damage to cover or seal change these elements for new reliable elements Contact of pneumatic connection seals with oils grease petrol etc may cause damage and accelerate ageing process INSPECTION Each time before hitching trailer to tractor If the trailer is unhitched from the tractor connections should be protected by cover or placed in their designated socket Before the winter pe...

Page 98: ...tness and visual inspection of the system checking technical condition of hydraulic connections 5 5 2 CHECKING HYDRAULIC SYSTEM TIGHTNESS Required maintenance activities Hitch trailer to tractor Connect the tipping system conduit according to the recommendations in the Operator s Manual Clean connections and hydraulic cylinders tipping cylinder tailgate cylinder and hydraulic brake system cylinder...

Page 99: ... After the first week of use Every 12 months 5 5 3 CHECKING TECHNICAL CONDITION OF HYDRAULIC CONNECTIONS 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 Hydraulic systems of the tractor and trailer are sensitive to the presence of permanent contamination whi...

Page 100: ... entire hub remove the bearing and individual sealing rings After 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 TABLE 5 4 Lubrication schedule ITEM LUBRICATION POINT NUMBER OF LUBRICATION POINTS TYPE OF GREASE FREQUENCY 1 Hub bearing 8 A 24M 2 Drawbar...

Page 101: ...POINT NUMBER OF LUBRICATION POINTS TYPE OF GREASE FREQUENCY 11 Automatic rear hitch 1 1 A 6M 12 Tailgate slide rollers 1 A 3M 13 Rocker arm pin 6 B 1M 14 Swing hinge of hinged opening tailgate 1 2 A 3M Lubrication periods M months D days 1 non standard equipment ...

Page 102: ...PRONAR T679 3 PRONAR T679 4 SECTION 5 5 28 FIGURE 5 14 Trailer s lubrication points ...

Page 103: ...he 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 Application of different oil types may cause damage to trailer or tractor In a new machine the hydraulic system is filled with L HL32 Lotos hydraulic oil In the even...

Page 104: ...t a doctor Hydraulic oil in normal conditions is not harmful to the respiratory tract A hazard only occurs when oil is strongly atomised oil vapour or in the case of fire during which toxic compounds may be released 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...

Page 105: ... C Do not direct water jets at system elements and equipment of the trailer i e control valve braking force regulator brake cylinders hydraulic cylinders pneumatic electric and hydraulic plugs lights electrical connections information and warning decals identification plate conduit connections lubrication points of the trailer etc High pressure water jets may get inside the machine and cause mecha...

Page 106: ...eparations While washing with detergents wear appropriate protective clothing and goggles protecting against splashing Observe environmental protection principles and wash trailer in a place designed for this purpose Washing and drying the trailer must take place at temperatures above 0 C 5 8 STORAGE Trailer should be kept in a closed or roofed building If the machine will not be used for a long t...

Page 107: ...lso tyre pressure should be inspected from time to time and if necessary pressure should be increased to the appropriate value 5 9 INSPECTION OF TIGHTENING TORQUE OF NUT AND BOLT CONNECTIONS 5 9 1 TIGHTENING TORQUE FOR NUT AND BOLT CONNECTIONS TIP Hydraulic conduits should be tightened using torque of 50 70 Nm FIGURE 5 15 Bolt with metric thread 1 strength class d thread diameter Unless other tigh...

Page 108: ...nce class according to DIN ISO 898 standard 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 If possible we recommend adjusting the tractor hitch so that the trail...

Page 109: ...y changing their position relative to the drawbar faceplate 1 Scope of adjustment activities Immobilise trailer with parking brake Place chocks under trailer wheels Dismantle drawbar 1 from faceplate 2 by removing fixing bolts 5 FIGURE 5 16 Adjustment of drawbar position 1 drawbar 2 faceplate 3 rotating drawbar eye 4 fixed drawbar eye 5 fixing bolt If necessary rotate the drawbar 1 by 180 degrees ...

Page 110: ...n of drawbar 1 allows two settings of the drawbar hitching eye 5 11 ADJUSTMENT OF TAILGATE POSITION FIGURE 5 17 Adjustment of tailgate position 1 hydraulic tailgate 2 pressure adjustment 3 adjustment nut 4 nut 5 slide The tailgate position should be checked during trailer operation If the tailgate position is incorrect a gap will occur between the side edge of the tailgate and the rear surface of ...

Page 111: ...the gap is detected during visual inspection adjust the position of closed tailgate 1 Loosen securing nut 4 Using adjustment bolt 3 set the tailgate position to reduce the gap between the surfaces of the load box and tailgate to minimum Tighten nut 3 Start the tractor s engine check operation of the tailgate and size of the gap between the closed tailgate and the load box 5 12 TROUBLESHOOTING 5 12...

Page 112: ...e Leaking system conduits or connections Check system for tightness Incorrect main or parking brake adjustment Regulate setting of expander arms Excessive heating of axle hubs Worn brake linings Change brake shoes Improper hydraulic oil viscosity Check oil quality make sure that the oil in both machines is of the same type If necessary change oil in tractor or in trailer Insufficient tractor hydra...

Page 113: ...ntral part of tyre Excessive air pressure in tyres Check air pressure Regularly check correctness of air pressure in tyres Excessive wear of left or right tyre shoulder on one side Incorrect toe in Incorrectly positioned wheel axles Damaged leaf spring on one side of the suspension system Replace leaf springs Worn tyre tread Damaged suspension system broken leaf spring Damaged brake system blockin...

Page 114: ...Damaged rim hardening and cracking near rim brittleness of tyre Incorrect braking technique Too frequent violent braking Damaged brake system Check brake system Control braking technique Damage occurs due to excessive heating of hub which leads to heating of wheel ...

Page 115: ...NOTES ...

Page 116: ... ...

Page 117: ...ions TRAILER VERSION FRONT REAR HALF AXLE T679 3 500 50 17 14PR 149A8 1 19 0 45 17 18PR 148A8 1 T679 4 500 50 17 14PR 149A8 1 400 60 15 5 145A8 2 19 0 45 17 18PR 148A8 1 1 wheel disc 16 00x17 2 wheel dics 13 00x15 5 ET 15 ...

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