PRONAR T679/3 Operator's Manual
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PRONAR T679/3 Operator's Manual

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ISSUE 2A-06-2016
PRONAR Sp. z o.o.
17-210 NAREW, UL. MICKIEWICZA 101A, WOJ. PODLASKIE, POLAND
Phone.:
Fax:
OPERATOR'S MANUAL
PRONAR T679/3
PRONAR T679/4
TRANSLATION OF THE ORIGINAL DOCUMENT
+48 085 681 63 29
+48 085 681 63 81
+48 085 681 63 83
TRAILER
PUBLICATION NO. 537N-00000000-UM
+48 085 681 64 29
+48 085 681 63 82
+48 085 682 71 10
www.pronar.pl
EN

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Summary of Contents for PRONAR T679/3

  • Page 1 PRONAR Sp. z o.o. 17-210 NAREW, UL. MICKIEWICZA 101A, WOJ. PODLASKIE, POLAND 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...
  • 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 T679/3, T679/4 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 BASIC INFORMATION 1.1 IDENTIFICATION 1.1.1 TRAILER IDENTIFICATION 1.1.2 HALF AXLE IDENTIFICATION 1.1.3 LIST OF SERIAL NUMBERS 1.2 INTENDED USE 1.3 EQUIPMENT 1.4 TERMS OF WARRANTY 1.10 1.5 TRANSPORT 1.11 1.5.1 TRANSPORT ON VEHICLE 1.11 1.5.2 INDEPENDENT TRANSPORT BY THE USER 1.13 1.6 ENVIRONMENTAL HAZARDS 1.14...
  • Page 8 3.2.4 HYDRAULIC TIPPING SYSTEM 3.2.5 TAILGATE HYDRAULIC SYSTEM 3.2.6 PARKING BRAKE 3.10 3.2.7 ELECTRIC LIGHTING SYSTEM 3.11 CORRECT USE 4.1 PREPARING THE TRAILER FOR WORK 4.1.1 PRELIMINARY INFORMATION 4.1.2 HAND-OVER AND INSPECTION OF THE MACHINE AFTER DELIVERY 4.2 4.1.3 PREPARING THE TRAILER FOR THE FIRST USE, TEST RUN OF THE TRAILER 4.1.4 PREPARING THE TRAILER FOR NORMAL USE...
  • 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 CHANGE OF PARKING BRAKE CABLE AND ADJUSTMENT OF CABLE TENSION. 5.16 5.3 PNEUMATIC SYSTEM MAINTENANCE 5.19 5.3.1 PRELIMINARY INFORMATION...
  • Page 10 5.12 TROUBLESHOOTING 5.37 5.12.1 TROUBLESHOOTING 5.37...
  • Page 11 SECTION BASIC INFORMATION...

  • Page 12: Identification

    Location of the data plate and vehicle identification number (VIN) (1) data plate, (2) example of VIN number for T679/3, (3) example of VIN number for T679/4 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.

  • Page 13: Half Axle Identification

    SECTION 1 PRONAR T679/3 PRONAR T679/4 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 MARK General description and purpose Symbol /Machine type...

  • Page 14: List Of Serial Numbers

    PRONAR T679/3 PRONAR T679/4 SECTION 1 FIGURE 1.2 Location of the half axle data plate (1) left rocker (2) half axle (3) data plate 1.1.3 LIST OF SERIAL NUMBERS TABLE 1.2 List of serial numbers HALF AXLE SERIAL NUMBER 1.2 INTENDED USE...
  • Page 15 SECTION 1 PRONAR T679/3 PRONAR T679/4 on public roads. Load box design enables loading and transport of machinery and construction vehicles as well as transport of goods on EUR-pallets. TABLE 1.3 Recommended types of pallets LENGTH WIDTH HEIGHT PALLET NAME - TYPE...
  • Page 16 PRONAR T679/3 PRONAR T679/4 SECTION 1 Using it as intended also involves all actions connected with the safe and proper operation and maintenance of the machine. Due to the above, the user is obliged to: • carefully read the OPERATOR'S MANUAL and WARRANTY BOOK and conform with the recommendations contained in these documents, •...
  • Page 17 SECTION 1 PRONAR T679/3 PRONAR T679/4 CONTENTS UNIT REQUIREMENTS Electrical system Electrical system voltage Connection socket 7-pole compliant with ISO 1724 Tractor hitches Type of hitch upper or lower transport hitch Other requirements 679/3 679/4 Minimum tractor power hp / /kW 69.4 / 51...

  • Page 18: Equipment

    PRONAR T679/3 PRONAR T679/4 SECTION 1 CONTENTS UNIT REQUIREMENTS Brake system - connectors Single conduit pneumatic system according to A DIN 74 294 Double conduit pneumatic system according to ISO 1728 Hydraulic system according to ISO 7421-1 Maximum system pressure Single conduit pneumatic system 5.8 –...
  • Page 19 SECTION 1 PRONAR T679/3 PRONAR T679/4 EQUIPMENT Fixed drawbar eye ∅40 • • Ball drawbar K80 • Load box made of wear resistant steel plates • Rear hitch • Double line pneumatic braking system • Hydraulic brake system • Hydraulic tipper system •...

  • Page 20: Terms 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 21: Transport

    SECTION 1 PRONAR T679/3 PRONAR T679/4 • inappropriate use, adjustment or maintenance, use of the machine for purposes other than those for which it is intended, • use of damaged machine, • repairs carried out by unauthorised persons, repairs carried out improperly, •...
  • Page 22 PRONAR T679/3 PRONAR T679/4 SECTION 1 Do not attach or hitch the trailer by drawbar eye or other structural elements that are not sufficiently strong to withstand operations of this type. The trailer should be attached firmly to the platform of the vehicle using straps or chains fitted with a tightening mechanism.

  • Page 23: Independent Transport By The User

    SECTION 1 PRONAR T679/3 PRONAR T679/4 Use certified and technically reliable securing measures. Worn straps, cracked securing catches, bent or corroded hooks as well as elements damaged in a different way may be unsuitable for use. Carefully read the information stated in the Operator's Manual for the given securing measure.

  • Page 24: Environmental Hazards

    PRONAR T679/3 PRONAR T679/4 SECTION 1 Operator's Manual and observe its recommendations. 1.6 ENVIRONMENTAL HAZARDS A hydraulic oil leak constitutes a direct threat to the natural environment owing to its limited biodegradability. The negligible solubility of hydraulic oil in water does not cause extreme toxicity of organisms living in the aquatic environment.

  • Page 25: Withdrawal From Use

    SECTION 1 PRONAR T679/3 PRONAR T679/4 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 26 PRONAR T679/3 PRONAR T679/4 SECTION 1 1.16...

  • Page 27: Safety Advice

    SECTION SAFETY ADVICE...

  • Page 28: Safety Information

    PRONAR T679/3 PRONAR T679/4 SECTION 2 2.1 SAFETY INFORMATION 2.1.1 BASIC SAFETY RULES • Before using the trailer, the user must carefully read this operator's manual. When operating the machine, the operator must comply with the recommendations. The trailer may only be used and operated by persons qualified to drive agricultural tractors and trained in the use of the machine.
  • Page 29 SECTION 2 PRONAR T679/3 PRONAR T679/4 • 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 30 PRONAR T679/3 PRONAR T679/4 SECTION 2 • Keep a safe distance during loading and unloading. Do not allow anyone to approach the place where works are carried out. • Load should be protected against moving by means of belts, chains and tapes or other securing measures.
  • Page 31 SECTION 2 PRONAR T679/3 PRONAR T679/4 • 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.

  • Page 32: Driving On Public Roads

    PRONAR T679/3 PRONAR T679/4 SECTION 2 • 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. 2.1.2 DRIVING ON PUBLIC ROADS • Comply with the road traffic regulations.

  • Page 33: 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 34: 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 35 SECTION 2 PRONAR T679/3 PRONAR T679/4 ITEM SYMBOL MEANING Before beginning servicing or repairs, turn off engine and remove key from ignition 70N-00000005 Caution! Danger of electric shock. Keep a safe distance from electric power lines during unloading. 58N-0000020 Regularly check if the nuts...
  • Page 36 PRONAR T679/3 PRONAR T679/4 SECTION 2 ITEM SYMBOL MEANING Danger of crushing Maintain a safe distance during opening and closing the tailgate. 96N-00000006 Machine type. 537N-00000001 Machine type. 537N-00000002 2.10...
  • Page 37 SECTION 2 PRONAR T679/3 PRONAR T679/4 FIGURE 2.2 Locations of information and warning decals. 2.11...
  • Page 38 PRONAR T679/3 PRONAR T679/4 SECTION 2 2.12...

  • Page 39: Design And Operation

    SECTION DESIGN AND OPERATION...

  • Page 40: Technical Specification

    PRONAR T679/3 PRONAR T679/4 SECTION 3 3.1 TECHNICAL SPECIFICATION TABLE 3.1 Basic technical data of the standard machine version CONTENTS UNIT T679/3 T679/4 Dimensions Total length 5,674 5,674 Total width 2,550 2,550 Total height 1,775 1,740 Load box dimensions Length...

  • Page 41: Trailer Construction

    SECTION 3 PRONAR T679/3 PRONAR T679/4 3.2 TRAILER CONSTRUCTION 3.2.1 CHASSIS Trailer chassis consists of subassemblies indicated in figure (3.1). Lower frame (1) is a structure welded from steel sections. The main support elements of the frame are two longitudinal members connected with crossbars. In the middle section there are sockets (5) used for mounting the tipping hydraulic cylinder.
  • Page 42 PRONAR T679/3 PRONAR T679/4 SECTION 3 FIGURE 3.1 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,...

  • Page 43: Load Box

    SECTION 3 PRONAR T679/3 PRONAR T679/4 3.2.2 LOAD BOX FIGURE 3.2 Load box (1) load box, (2) hydraulic tailgate, (3) front canopy, (4) hinged-opening tailgate (optional equipment), (5) transport lug Trailer load box (1) has a monocoque construction. It is madeof steel plates and shapes - figure (3.2).

  • Page 44: Main Brake

    PRONAR offers the load boxes and tailgates made of three different grades of steel in order to meet the customer's expectations. Load box code reflecting the steel grade is stamped on the rear left stake, while tailgate code is stamped on the left tailgate profile.
  • Page 45 SECTION 3 PRONAR T679/3 PRONAR T679/4 FIGURE 3.4 Design and 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...
  • Page 46 PRONAR T679/3 PRONAR T679/4 SECTION 3 Main control valve Relay valve Automatic braking force regulator Manual braking force regulator Wire connection Air tank Brake cylinder Control valve (connector) Air filter The task of the control valve (1) - figure (3.5),- is to activate the trailer brakes simultaneously with the tractor brake applied.

  • Page 47: Hydraulic Tipping System

    SECTION 3 PRONAR T679/3 PRONAR T679/4 FIGURE 3.5 Control valve and braking force regulator (1) control valve, (2) braking force regulator, (3) trailer parking brake release button, (4) work selection regulator lever, (A) position "NO LOAD”, (B) position "HALF LOAD”, (C) position "FULL LOAD”...
  • Page 48 PRONAR T679/3 PRONAR T679/4 SECTION 3 FIGURE 3.6 Hydraulic tipping system design and diagram (1) telescopic cylinder, (2) three-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: •...

  • Page 49: Tailgate Hydraulic System

    SECTION 3 PRONAR T679/3 PRONAR T679/4 On the connection conduit, in the vicinity of plug (4), there is a decal (8) identifying the supply conduit of the hydraulic tipping system. ATTENTION Cut-off valve (3) – figure (3.4) limits the tipping angle of the load box when tipped to the rear.

  • Page 50: Parking Brake

    PRONAR T679/3 PRONAR T679/4 SECTION 3 The hydraulic system of the tailgate is used for raising and lowering the tailgate (3). The tailgate can be kept in any position by means of the hydraulics manifold lever. Hydraulic cylinder (1) is connected using conduits terminated with quick couplers (2). Plugs (2) should be placed in proper sockets of the tractor's hydraulic manifold.

  • Page 51: Electric Lighting System

    SECTION 3 PRONAR T679/3 PRONAR T679/4 half axles by means of cables in brake cable conduits (3) and (4). Clockwise rotation of the mechanism crank (1) increases tension of steel cables. Expander arms exert pressure on brake shoes and cause the half axles 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.
  • Page 52 PRONAR T679/3 PRONAR T679/4 SECTION 3 MARKING FUNCTION Rear right parking light Right indicator FIGURE 3.10 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 53 SECTION 3 PRONAR T679/3 PRONAR T679/4 Arrangement of electrical system components and connection diagram of the connection socket are shown in figures (3.7) and (3.8). 3.15...
  • Page 54 PRONAR T679/3 PRONAR T679/4 SECTION 3 3.16...

  • Page 55: Correct Use

    SECTION CORRECT USE...

  • Page 56: Preparing The Trailer For Work

    PRONAR T679/3 PRONAR T679/4 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 57: Trailer

    SECTION 4 PRONAR T679/3 PRONAR T679/4 ATTENTION The seller is obliged to conduct the first start up of the trailer in the presence of the user. The user trained by the seller is not released from the obligation to read this Operator's Manual carefully.

  • Page 58: Preparing The Trailer For Normal Use

    PRONAR T679/3 PRONAR T679/4 SECTION 4 • Switch on individual lights, check correct operation of electrical system. • Release tractor's parking brake. Perform test drive. Check the trailer's braking efficiency during driving. • Stop tractor and turn off the engine, immobilise the tractor and trailer with parking brake.

  • Page 59: Hitching And Unhitching The Trailer

    SECTION 4 PRONAR T679/3 PRONAR T679/4 • Check correctness of electrical system operation. • Check technical condition and completeness of shields and protection devices. • Install the slow-moving vehicle warning sign - if the trailer is used on public roads.
  • Page 60 PRONAR T679/3 PRONAR T679/4 SECTION 4 Check and, if necessary, protect leads against abrasion or other mechanical damage. Just before driving off, raise the mechanical support, remove chocks from under the trailer's wheels and release parking brake. When turning, connecting conduits must hang loosely and not become tangled with moving elements of machine and tractor.

  • Page 61: Hitching And Unhitching The Second Trailer

    SECTION 4 PRONAR T679/3 PRONAR T679/4 Unhitching In order to disconnect the trailer from the tractor follow these steps. Immobilise tractor with parking brake, turn off tractor engine Ensure that unauthorised persons do not have access to the tractor cab.
  • Page 62 PRONAR T679/3 PRONAR T679/4 SECTION 4 Position the tractor with the first trailer hitched directly in front of the second trailer's drawbar. Immobilise second trailer with parking brake. Remove pin from the rear hitch of the first trailer. If the trailer is fitted with automatic rear hitch, lift the pin by the handle.

  • Page 63: Loading And Securing Load

    SECTION 4 PRONAR T679/3 PRONAR T679/4 Unlock the pin of the hitch of the first trailer. Remove the pin and drive tractor away. DANGER Only double axle trailers may be hitched to the trailer. 4.3 LOADING AND SECURING LOAD 4.3.1 GENERAL INFORMATION ABOUT LOADING...

  • Page 64: Securing Load

    PRONAR T679/3 PRONAR T679/4 SECTION 4 Load should be uniformly distributed along the length and width of the load box in order to ensure proper distribution of half axle loads and proper stability of the trailer. Load must not extend beyond the outline of the load box. The permissible loading height defined by the road traffic regulations and permissible design load of the trailer must not be exceeded.
  • Page 65 SECTION 4 PRONAR T679/3 PRONAR T679/4 It is impossible to describe all methods of loading due to the diversity of materials, tools, means of fixing and securing a load. While working be guided by caution and own experience. The trailer user must carefully read the regulations concerning road transport and comply with them.
  • Page 66 PRONAR T679/3 PRONAR T679/4 SECTION 4 WEIGHT BY VOLUME TYPE OF MATERIAL KG/M Mineral fertilisers: ammonium sulphate 800 - 850 potash salt 1,100 – 1,200 super phosphate 850 – 1,440 basic slag phosphate 2,000 – 2,300 potassium sulphate 1,200 – 1,300...

  • Page 67: Transporting Loads

    SECTION 4 PRONAR T679/3 PRONAR T679/4 WEIGHT BY VOLUME TYPE OF MATERIAL KG/M maize 700 - 850 wheat 720 - 830 oil seed rape 600 - 750 linseed 640 - 750 lupins 700 - 800 oats 400 - 530 lucerne...
  • Page 68 PRONAR T679/3 PRONAR T679/4 SECTION 4 • Permissible design speed and maximum speed allowed by road traffic law must not be exceeded. The towing speed should be adapted to the current road conditions, load carried by the trailer, road surface conditions and other relevant conditions.

  • Page 69: Unloading

    SECTION 4 PRONAR T679/3 PRONAR T679/4 • While driving on public roads, the tailgate must be closed. • Please note that the braking distance of the tractor and trailer combination is substantially increased at higher speeds and loads. • Monitor trailer's behaviour when travelling on an uneven terrain, and adjust driving speed to road conditions, slow down early enough when turning.
  • Page 70 PRONAR T679/3 PRONAR T679/4 SECTION 4 open hydraulic tailgate (1) (standard) - Figure (4.2), using the cylinder by operating a lever on the tractor hydraulic manifold, when unloading the load box equipped with hinged hatch (1) set the width of the slot opening using chain catches (5), which should be secured by means of pin (6) and cotter pin (7) –...
  • Page 71 SECTION 4 PRONAR T679/3 PRONAR T679/4 close the hydraulic tailgate (1) by actuating a suitable hydraulic circuit from the tractor - figure (4.2), load box with hinged hatch (1) must be secured with chain catches (5) - Figure (4.3), before moving off make sure that the hydraulic tailgate or hinged hatch is properly locked.

  • Page 72: Proper Use And Maintenance Of Tyres

    PRONAR T679/3 PRONAR T679/4 SECTION 4 be loaded and unloaded only if the load box is completely lowered. Do NOT pull pin (8) out when the load box is raised. ATTENTION Do NOT jerk the trailer forwards if load is bulky or reluctant to pour and does not unload.
  • Page 73 SECTION 4 PRONAR T679/3 PRONAR T679/4 • Do not exceed the trailer's maximum design speed. • 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.
  • Page 74 PRONAR T679/3 PRONAR T679/4 SECTION 4 4.20...

  • Page 75: Maintenance

    SECTION MAINTENANCE...

  • Page 76: Preliminary Information

    PRONAR T679/3 PRONAR T679/4 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 77: Checking Slackness Of Wheel Axle Bearings

    SECTION 5 PRONAR T679/3 PRONAR T679/4 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 CHECKING SLACKNESS OF WHEEL AXLE BEARINGS FIGURE 5.1...
  • Page 78 PRONAR T679/3 PRONAR T679/4 SECTION 5 Raise the wheels (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 positioned in rotation point of rocker (1).

  • Page 79: Adjustment Of Slackness Of Wheel Axle Bearings

    SECTION 5 PRONAR T679/3 PRONAR T679/4 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 80: Nut Tightening

    PRONAR T679/3 PRONAR T679/4 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 half axle pin. Wheel...
  • Page 81 SECTION 5 PRONAR T679/3 PRONAR T679/4 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 82: Checking Air Pressure In Tyres, Evaluating Technical Condition Of Tyres And Steel Wheels

    PRONAR T679/3 PRONAR T679/4 SECTION 5 Wheel nuts should be tightened using the torque of 270 Nm - M18x1.5 nuts. ATTENTION Wheel 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 83: Checking Thickness Of Brake Shoe Linings

    SECTION 5 PRONAR T679/3 PRONAR T679/4 Wheels should be inspected with regard to distortion, breaking of material, breaking of welds, corrosion, especially in the area of welds and contact with tyre. INSPECTION • Every month of use. • Every week during intensive work.

  • Page 84: Mechanical Brakes Adjustment

    PRONAR T679/3 PRONAR T679/4 SECTION 5 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.
  • Page 85 SECTION 5 PRONAR T679/3 PRONAR T679/4 Correct brake cylinder rod stroke should be within the range of 25 – 45 mm. During braking, the brake cylinder rod stroke should be within the specified operating range and the angle between brake cylinder rod and expander arm should be about 90° – see figures (5.8) and (5.9).
  • Page 86 PRONAR T679/3 PRONAR T679/4 SECTION 5 operating angle, the cylinder rod fork (6) must be installed on the expander arm (1) in such a manner as to ensure that the operating angle at full braking is about 90°. TABLE 5.1...
  • Page 87 SECTION 5 PRONAR T679/3 PRONAR T679/4 Remember or mark the original position (5) of brake cylinder fork (4) in expander arm opening (3). Check if the brake cylinder rod moves freely and within the whole nominal range. FIGURE 5.8 Principle of brake adjustment...
  • Page 88 PRONAR T679/3 PRONAR T679/4 SECTION 5 a new one. When installing the brake cylinder, maintain its original position with regard to bracket (6). Dismantle the expansion ring securing the expander arm. Shift the expander arm to align the marked expander arm opening with the cylinder fork opening.
  • Page 89 SECTION 5 PRONAR T679/3 PRONAR T679/4 FIGURE 5.9 Principle of brake adjustment (1) brake cylinder rod, (3) expander arm, (4) cylinder fork, (5) position of fork pin, (6) brake cylinder bracket, (A) mark on the brake cylinder at brake release position, (B) mark on the brake cylinder at full...

  • Page 90: Change Of Parking Brake Cable And Adjustment Of Cable

    PRONAR T679/3 PRONAR T679/4 SECTION 5 5.2.8 CHANGE OF PARKING BRAKE CABLE AND ADJUSTMENT OF CABLE TENSION. Proper operation of the parking brake is dependent on the effectiveness of the half axle brake and the correct brake cable tension. FIGURE 5.10...
  • Page 91 SECTION 5 PRONAR T679/3 PRONAR T679/4 Dismount the fork pin protection. Remove fork pin (3). Undo cable securing nuts (4). Dismount the mechanism pin protections. Remove pin (5). Pull out cable (2). Install the cable in reverse order. Adjustment of parking brake cable tension Hitch trailer to tractor.
  • Page 92 PRONAR T679/3 PRONAR T679/4 SECTION 5 FIGURE 5.11 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.

  • Page 93: Pneumatic System Maintenance

    SECTION 5 PRONAR T679/3 PRONAR T679/4 5.3 PNEUMATIC SYSTEM MAINTENANCE 5.3.1 PRELIMINARY INFORMATION Work connected with repair, replacement or regeneration of system components (brake cylinders, conduits, control valve, braking force regulator, etc.) should be entrusted to specialist establishments, having the appropriate technology and qualifications for this type of work.

  • Page 94: Inspection Of The System

    PRONAR T679/3 PRONAR T679/4 SECTION 5 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. The help of a second person is required.

  • Page 95: Cleaning The Air Filters

    SECTION 5 PRONAR T679/3 PRONAR T679/4 5.4 CLEANING THE AIR FILTERS Depending on trailer working conditions, but not less than once in three months, take out and clean air filter inserts, which are located in pneumatic system connection conduits. Inserts are used many times and are not subject to changing unless they are mechanically damaged.

  • Page 96: Draining Water From Air Tank

    PRONAR T679/3 PRONAR T679/4 SECTION 5 INSPECTION • Every 3 months. The filter insert and the filter body should be carefully washed out and blown through with compressed air. Assembly should be done in reverse order. 5.4.1 DRAINING WATER FROM AIR TANK...

  • Page 97: Cleaning And Maintaining Pneumatic Conduit Connections And Pneumatic Sockets

    SECTION 5 PRONAR T679/3 PRONAR T679/4 Change copper seals. Screw valves in, fill tanks with air, check tightness. DANGER Release air from the air tank before dismantling drain valve. INSPECTION • Every 12 months (before winter). 5.4.3 CLEANING AND MAINTAINING PNEUMATIC CONDUIT...

  • Page 98: Hydraulic System Maintenance

    PRONAR T679/3 PRONAR T679/4 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 99: And Sockets

    SECTION 5 PRONAR T679/3 PRONAR T679/4 Switch off the tractor's engine and check all hydraulic cylinders for tightness. If oil is found on hydraulic cylinder body, check origin of leak. Inspect seals when hydraulic cylinder is completely extended. Minimum leaks are permissible with symptoms of "sweating".

  • Page 100: Lubrication

    PRONAR T679/3 PRONAR T679/4 SECTION 5 5.6 LUBRICATION Trailer lubrication should be performed with the aid of a manually or foot operated grease gun, filled recommended grease. Before commencing work insofar as is possible remove old grease and other contamination. Remove and wipe off excess oil or grease.
  • Page 101 SECTION 5 PRONAR T679/3 PRONAR T679/4 ITEM LUBRICATION POINT Automatic rear hitch Tailgate slide rollers Rocker arm pin Swing hinge of hinged-opening tailgate Lubrication periods – M months, D – days – non-standard equipment 5.27...
  • Page 102 PRONAR T679/3 PRONAR T679/4 SECTION 5 FIGURE 5.14 Trailer's lubrication points 5.28...

  • Page 103: Consumables

    SECTION 5 PRONAR T679/3 PRONAR T679/4 TABLE 5.5 Recommended lubricants MARKING ACCORDING DESCRIPTION TO 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. Empty grease or oil containers should be disposed of according to the recommendations of the lubricant Manufacturer.
  • Page 104 PRONAR T679/3 PRONAR T679/4 SECTION 5 TABLE 5.6 L-HL 32 Lotos hydraulic oil characteristics ITEM NAME UNIT VALUE ISO 3448VG viscosity classification Kinematic viscosity at 40°C 28.8 – 35.2 ISO 6743/99 quality classification DIN 51502 quality classification Flash-point Because of its composition the oil applied is not classified as a dangerous substance, however long-term action on the skin or eyes may cause irritation.

  • Page 105: Trailer Cleaning

    SECTION 5 PRONAR T679/3 PRONAR T679/4 lubricant product and waste utilisation (used containers, contaminated rags etc.). Information leaflet (material safety data sheet) should be kept together with grease. 5.7 TRAILER CLEANING • The trailer should be cleaned as needed. Before using pressure washer the user is obliged to acquaint himself with the operating principles and recommendations concerning safe use of this equipment.

  • Page 106: Storage

    PRONAR T679/3 PRONAR T679/4 SECTION 5 • Washing detergent should be kept in original containers, optionally in replacement containers, but very clearly marked. Preparations may not be stored in food and drink containers. • Ensure cleanliness of elastic conduits and seals. The plastic from which these elements are made may be susceptible to organic substances and some detergents.

  • Page 107: Inspection Of Tightening Torque Of Nut And Bolt Connections

    SECTION 5 PRONAR T679/3 PRONAR T679/4 • Wheel rims and tyres should be carefully washed and dried. During a longer storage of unused trailer it is recommended that the machine should be moved a bit once every 2 - 3 weeks in order to change the place of contact of tyres with the ground.

  • Page 108: Adjustment Of Drawbar Position

    PRONAR T679/3 PRONAR T679/4 SECTION 5 values for the most frequently used bolt and nut connections are given in table (5.7). Given values apply to non-lubricated steel bolts. TABLE 5.7 Tightening torque for nut and bolt connections 10.9 THREAD METRIC...
  • Page 109 SECTION 5 PRONAR T679/3 PRONAR T679/4 The drawbar height is controlled through the appropriate use of the holes on the drawbar plate (1) relative to the faceplate (2) - figure (5.16). Drawbar positions (3) or (4) can also be adjusted by changing their position relative to the drawbar faceplate (1).

  • Page 110: Adjustment Of Tailgate Position

    PRONAR T679/3 PRONAR T679/4 SECTION 5 Tighten the bolts (5) using the correct torque according to table (5.7). The design of the drawbar (1), and the faceplate (2) allows the three settings (I) (II) (III). Set and mount the rotating drawbar eye (3), or fixed drawbar eye (4) in the appropriate position.
  • Page 111 SECTION 5 PRONAR T679/3 PRONAR T679/4 scattering of bulk materials may occur. When adjusting the tailgate, reduce the gap to minimum. Scope of adjustment activities Hitch trailer to tractor. Park machine and tractor on level surface. Connect conduits of the tailgate hydraulic system.
  • Page 112 PRONAR T679/3 PRONAR T679/4 SECTION 5 FAULT CAUSE REMEDY Control valve or braking Check valve, repair or replace. force regulator damaged Excessive bearing Check slackness and adjust if slackness needed Noise in axle hubs Damaged bearing Replace bearing Damaged hub parts...
  • Page 113 SECTION 5 PRONAR T679/3 PRONAR T679/4 FAULT CAUSE REMEDY Check and ascertain that hydraulic Damaged hydraulic conduits are tight, not fractured conduits and properly tightened. If necessary, replace or tighten. Check air pressure. Regularly check correctness of air pressure in tyres.
  • Page 114 PRONAR T679/3 PRONAR T679/4 SECTION 5 FAULT CAUSE REMEDY Check brake system. Incorrect braking technique. Damaged rim (hardening Control braking technique. Too frequent violent and cracking near rim), Damage occurs due to excessive braking. brittleness of tyre. heating of hub which leads to Damaged brake system.
  • Page 115 NOTES …………………………………………………………………………………………………………… …………………………………………………………………………………………………………… …………………………………………………………………………………………………………… …………………………………………………………………………………………………………… …………………………………………………………………………………………………………… …………………………………………………………………………………………………………… …………………………………………………………………………………………………………… …………………………………………………………………………………………………………… …………………………………………………………………………………………………………… …………………………………………………………………………………………………………… …………………………………………………………………………………………………………… …………………………………………………………………………………………………………… …………………………………………………………………………………………………………… …………………………………………………………………………………………………………… …………………………………………………………………………………………………………… …………………………………………………………………………………………………………… …………………………………………………………………………………………………………… …………………………………………………………………………………………………………… …………………………………………………………………………………………………………… …………………………………………………………………………………………………………… …………………………………………………………………………………………………………… …………………………………………………………………………………………………………… …………………………………………………………………………………………………………… ……………………………………………………………………………………………………………...
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  • Page 117 ANNEX A Tyre dimensions TRAILER VERSION FRONT / REAR HALF AXLE 500/50-17 14PR 149A8 T679/3 19.0/45-17 18PR 148A8 500/50-17 14PR 149A8 T679/4 400/60 - 15.5 145A8 19.0/45-17 18PR 148A8 - wheel disc 16.00x17" - wheel dics 13.00x15.5" ET=-15...

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