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Thank you for purchasing our trailer. In the interests of your safety and care for the reliability and durability of the machine, we ask that you familiarise yourself with the content of this manual. Remember!!! Before using the trailer for the first time, check if the wheels are properly tightened!!! Regularly check the technical condition of the machine in accordance with the attached schedule.
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The machine is designed to meet obligatory standards, documents and legal regulations currently in force. The Operator's Manual describes the basic principles of safety in use and operation of the Pronar T285 agricultural trailer. If the information contained in the Operator's Manual needs clarification then the user should refer for assistance to the sale point where the machine was purchased or to the Manufacturer.
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Information, descriptions of danger and precautions and also recommendations and orders associated with user safety instructions are marked: and also 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 distinguished in the text by the sign: and also preceded either word "ATTENTION".
TABLE OF CONTENTS BASIC INFORMATION IDENTIFICATION INTENDED USE FITTINGS WARRANTY CONDITIONS TRANSPORT ENVIRONMENTAL HAZARDS WITHDRAWAL FROM USE 1.10 SAFETY IN USE BASIC SAFETY PRINCIPLES PRINCIPLES WHEN TRAVELLING ON PUBLIC ROADS DESCRIPTION OF MINIMAL RISK INFORMATION AND WARNING STICKERS CONSTRUCTION AND PRINCIPLE OF OPERATION TECHNICAL SPECIFICATION CHASSIS TIPPING FRAME...
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TRANSPORTING LOADS 4.15 UNLOADING 4.17 DISCONNECTING FROM TRACTOR 4.19 4.10 PROPER USE AND MAINTENANCE OF TYRES 4.19 TECHNICAL MAINTENANCE INSPECTION AND REGULATION OF WHEEL AXLE BEARINGS REGULATION OF MAIN BRAKES REGULATION OF MAIN BRAKES PNEUMATIC SYSTEM OPERATION HYDRAULIC SYSTEM OPERATION BLOCK SETTING REGULATION 5.11 HOOK SETTING REGULATION...
LOCATION OF THE DATA PLATE AND SERIAL NUMBER (1) data plate, (2) serial number The T285 hook trailer has an identifying plate placed on the left longitudinal rail of lower frame. The factory number is stamped into the identity plate and into the reinforcement of the left longitudinal rail of lower frame, on a rectangle area painted silver.
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 Maximum hitch load (not applicable) Permissible front axle load Permissible rear axle load The factory number of the axle half shaft and their type is stamped onto the identity plate secured to the hub cap of the axle shaft (from the inside).
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Use is permitted with load boxes, of total length not less than 5 650 mm and not greater 6 150 mm. Width and height of container may not exceed dimensions given table (1.2). The trailer is also adapted to work with load boxes produced by Pronar, the technical parameters of which are detailed in table (1.3).
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The braking system and the light and indicator system meet the requirements of road traffic regulations. The maximum speed of the trailer on public roads is 30 km/h in Poland (pursuant to Road Traffic Act of June 20th 1997, art. 20). In the countries where the trailer is used, the limits stipulated by the road traffic legislation in force in a given country must be observed.
The trailer user shall familiarise himself with the contents of the operating instructions and comply with them. DANGER The trailer must not be used for purposes other than those for which it is intended, in particular: • for transporting people and animals, •...
• rear hitch. 1.4 WARRANTY CONDITIONS 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.
• repairs carried out by unauthorised persons, improperly carried out repairs, • making unauthorised alterations to machine design, the user will lose the right to warranty service. Demand that the seller carefully and precisely fills out the Warranty Book and guarantee repair coupons.
The hook trailer should be attached firmly to the platform of the vehicle using straps or chains fitted with a tightening mechanism. The fastening equipment used must have a valid safety certificate. Wedges or other objects without sharp edges should be placed under the wheels of the trailer to prevent it from rolling.
IMPORTANT! Waste oil should only be taken to the appropriate facility dealing with the re-use of this type of waste. Do NOT throw or pour oil into sewerage or water tanks. 1.7 WITHDRAWAL FROM USE In the event of decision by the user to withdraw the trailer from use, comply with the regulations in force in the given country concerning withdrawal from use and recycling of machines withdrawn from use.
SECTION SAFETY IN USE BASIC SAFETY PRINCIPLES PRINCIPLES WHEN TRAVELLING ON PUBLIC ROADS DESCRIPTION OF MINIMAL RISK INFORMATION AND WARNING STICKERS...
Anyone who uses the machine other than the way intended takes full responsibility on himself for any consequences of this use. • Any modification to the hook trailer frees PRONAR Narew from any responsibility for damage or detriment to health which may arise as a result.
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placing under the wheels of trailer equipment wedges or other objects without sharp edges. • 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.
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• In the event of injuries being caused by pressurised hydraulic oil, contact a doctor immediately. Hydraulic oil may find its way under the skin and cause infections. • Use the hydraulic oil recommended by the Producer. Never mix two types of oil. •...
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• The paint coating should be cleaned off before beginning welding work. Burning paint fumes are poisonous for people and animals. Welding work should be carried out in a well lit and well ventilated space. • During welding work pay attention to flammable or fusible elements (parts of the pneumatic, electric and hydraulic systems, plastic parts).
2.2 PRINCIPLES WHEN TRAVELLING ON PUBLIC ROADS DRAWING 2.1A POSITIONING THE WARNING SIGN (1) slow-moving vehicle sign • When travelling on public roads, respect the road traffic regulations. • Exceeding the maximum load capacity of the hook trailer may damage it, and also threaten the safety of traffic.
2.3 DESCRIPTION OF MINIMAL RISK Pronar Sp. z o. o. in Narew has made every effort to eliminate the risk of accidents. There is, however, a certain minimal risk which could lead to an accident, and this is connected mainly with the actions described below: •...
2.4 INFORMATION AND WARNING STICKERS The hook trailer is labelled with the information and warning stickers mentioned in table (2.1). The symbols are positioned as presented in figure (2.2A). Throughout the time it is in use, the user of the machine is obliged to take care that notices and warning and information symbols located on the hook trailer are clear and legible.
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ITEM SAFETY SYMBOL DESCRIPTION Keep a safe distance from electric power lines during tipping or connecting and disconnecting load Check the condition of the screw and nut connections of the wheel axles Grease according to the recommendations in the Operating Instructions Machine type Air pressure in the tyres...
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ITEM SAFETY SYMBOL DESCRIPTION Information on application of rear lamp assembly shields Tipping arm block Position I Tipping the loadbox Unblocking middle frame Position Disconnecting/connecting load Information on possibility of application of tipping frame interlock depending on its position - air pressure in tyres depends on tyres used 2.10...
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DRAWING 2.2A STICKER LOCATIONS Labelling in line with table 2.1 „Information and warning stickers” 2.11...
SECTION CONSTRUCTION AND PRINCIPLE OF OPERATION TECHNICAL SPECIFICATION CHASSIS TIPPING FRAME WORKING BRAKE PARKING BRAKE HYDRAULIC TIPPER SYSTEM HYDRAULIC ROCKER ARM BLOCK SYSTEM ELECTRICAL SYSTEM, WARNING SIGNS AND REFLECTIVE LIGHTS...
- depending on the tyres used, - height from load box base to hook axis - load capacity combined with load box weight, - length defined from hook axis to load box rear edge, - without hydraulic brake system and without straight hydraulic support system 3.2 CHASSIS The main bearing element of the hook trailer is the lower frame (1) –...
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DRAWING 3.1A TRAILER CHASSIS – VIEW FROM THE FRONT (1) lower frame, (2) drawbar, (3) straight support with mechanical worm gear, (4) hydraulic straight support, (5) handbrake mechanism...
3.3 TIPPING FRAME DRAWING 3.3A TIPPING FRAME (1) rear frame, (2) central frame, (3) hook frame, (4) tipping ram, (5) block system drawbar, (6) hook with lock...
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Tipping frame (complete) is secured to lower frame with the aid of tipping axis, whereas in front part by tipping ram (4). Tipping frame is composed of rear frame (1), central frame (2) and hook frame (3) to which is screwed the hook (6). Lock automatically falls or rises depending on position of frame.
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DRAWING 3.5A RAISING TIPPING FRAME (1) lever block, (2) rear frame, (3) central frame, (4) lever block, (I) – lever position in load box tipping position...
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DRAWING 3.6A RAISING CENTRAL FRAME (1) lever, (2) central frame, (3) hook frame, (II) lever setting during connection or disconnection of load box...
3.4 WORKING BRAKE The hook trailer is equipped with one of two types of working brake: • double conduit pneumatic brake system - figure (3.7A), • hydraulic brake system - figure (3.8A). DRAWING 3.7A DOUBLE CONDUIT PNEUMATIC SYSTEM DIAGRAM (1) air tank, (2) control valve, (3) brake force regulator, (4) pneumatic ram, (5), (6) lead connectors, (7) air filter, (8) air tank control connectors (9) drain valve Working brake is activated from the tractor driver's cab by pressing on the brake pedal in the tractor.
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DRAWING 3.8A HYDRAULIC BRAKES SYSTEM DIAGRAM (1) hydraulic brake cylinder, (2) quick coupler, (3) distributor block DRAWING 3.9A THREE-STEP BRAKE FORCE REGULATOR (1) three-step brake force regulator, (2) regulator setting control lever, (A), (B), (C) regulator operation position Three-step brake force regulator - figure (3.9A), applied in pneumatic systems adjusts braking force depending on setting.
3.5 PARKING BRAKE The parking brake is for immobilising trailer while standing motionless. The brake crank mechanism is mounted on the bracket placed on the left lower longitudinal frame. The steel cable is connected with the axle expander lever through the handbrake release with the crank mechanism.
Both circuits operate independently of each other. While tipping load box (unloading), only the tipping frame supply circuit is used (1), if connecting or disconnecting the load box both systems are used. Detailed description of these functions can be found in section 4. Valves (3), placed in the system relieve the system of sudden loading due to which the hydraulic cylinder operation is very smooth.
3.8 ELECTRICAL SYSTEM, WARNING SIGNS AND REFLECTIVE LIGHTS DRAWING 3.12A POSITIONING OF ELECTRICAL ELEMENTS AND REFLECTIVE LIGHTS (1), (2) rear light combination group left/right, (3), (4) front rear and side position lamp left/right, (5) registration plate illumination lamp, (6) slow-moving vehicle warning plate, (7) front clearance and left/right position lamp, (8) side position lamp, (9) front reflective light 3.14...
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DRAWING 3.13A ELECTRICAL SYSTEM DIAGRAM (ZP), (ZL) rear lamp group, (TOP), (TOL) clearance lamp, (GP) 7 point plug, (GT) - rear 7 point socket, (PL), (PP) front position lamp, (OTP), (OTL) license plate illumination lamp 3.15...
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The trailer's electrical system is designed for supply of 12 V DC. Connection of the hook trailer's electrical system with the tractor should be made through an appropriate connection lead with 7-pin socket. Positioning of electrical elements and reflective lights is shown on figure (3.12A).
SECTION CORRECT USE PREPARING FOR WORK BEFORE FIRST USE CHECKING THE TRAILER'S TECHNICAL CONDITION ATTACHING TO TRACTOR CONNECTING LOAD BOX DISCONNECTING LOAD BOX LOADING LOAD BOX TRANSPORTING LOADS UNLOADING DISCONNECTING FROM TRACTOR PROPER USE AND MAINTENANCE OF TYRES...
4.1 PREPARING FOR WORK BEFORE FIRST USE The trailer is supplied to the user in a completely assembled state and does not require additional mounting operations of machine sub-assemblies. The manufacturer guarantees that the trailer is fully operational and has been checked according to quality control procedures and is ready for normal use.
ATTENTION! Non-adherence to the recommendations contained in the instructions or improper use of trailer may cause damage to the machine. The technical condition prior to starting use may not give rise to any reservation. 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).
DESCRIPTION SERVICE OPERATION FREQUENCY Check if the nuts and bolts securing drawbar, rear hitch and remaining Torque values should be according to nut and bolt connections are table (5.7). properly tightened, Lubricate elements according to Lubrication guidelines presented in section "lubrication points".
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• place tractor sufficiently near to trailer, • connect tubes supplying hydraulic support cylinder to socket in tractor (hydraulic support single-acting cylinder), DRAWING 4.1A HYDRAULIC AND MECHANICAL SUPPORT (1) hydraulic support, (2) mechanical gear support, (3) hydraulic support valve, (4) gear crank, (O) valve position OPEN, (Z) valve position CLOSED, (A) mechanical support lifting, (B) support lowering, (C),(D) choice of gear setting •...
• connect electrical leads to the tractor as well as braking and tipping system conduit tubes to appropriate tractor sockets, • release parking handbrake, turning brake mechanical crank anticlockwise. If trailer is equipped with mechanical gear support; the drawbar shaft height is obtained by turning handwheel (4) of support gear.
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DRAWING 4.2A CONNECTING LOAD BOX, STAGE 1 (1) central frame block lever In order to connect load box, action should be taken in the same sequence as presented below: • Take off slow-moving vehicle plate from trailer, • if necessary, regulate position of load box block and setting of hook – see section 5, •...
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ATTENTION! While connecting load box it is necessary to arrange it in such a way that the longitudinal axis of the trailer is aligned with the longitudinal axis of the load box. If not, the load box may not fit on the trailer rollers lengthwise. While pulling in the load box is necessary to observe whether its length is properly supported on the trailer guide rollers.
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DRAWING 4.4A CONNECTING LOAD BOX, STAGE 3 DANGER When pulling in the load box onto the trailer the drawbar shaft and tractor hitch are subjected to great load. Other persons must NOT be in the immediate vicinity of the trailer and especially behind the connected load box.
When reversing it is necessary to delicately attempt to retract the hook frame. The described process needs to be carried out taking particular care and with the assistance of a person standing to the side of the trailer, who is able to observe the connection stage. 4.5 DISCONNECTING LOAD BOX Disconnecting the load box must be done on hard and level ground.
When disconnecting the load box, user must take particular care that prior to lowering the load box to the ground it shall not strike any trailer's structural elements. ATTENTION! Hydraulic cylinders blocking suspension must be extended - in suspension blocking position.
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VOLUME WEIGHT TYPE OF MATERIAL kg/m fresh manure 700 - 750 compost 950 – 1 100 dry peat 500 - 600 Mineral fertilisers: ammonium sulphate 800 - 850 potash salt 1 100 – 1 200 superphosphate 850 – 1 440 basic slag phosphate 2 000 –...
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VOLUME WEIGHT TYPE OF MATERIAL kg/m wilted baled hay 200 - 290 stored dry hay 50 - 90 stored cut hay 90 - 150 clover (lucerne) wilted in the swath 20 - 25 clover (lucerne) cut wilted on trailer 110 - 160 clover (lucerne) wilted on gathering trailer 60 - 100 dry stored clover...
- building materials, mineral fertilisers and mineral mixtures cause damage to trailer construction and/or paint coating and cause the creation of corrosion points With regard to the various density of materials, using the total load box capacity may cause exceeding permissible weight limit of hook trailer.
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• The trailer must not be overloaded, loads must be uniformly distributed so that the maximum permissible axle and drawbar loads are not exceeded. The trailer's maximum carrying capacity must not be exceeded as this can damage the trailer and pose a risk to the operator or other road users.
• Please note that the braking distance of tractor and trailer combination is substantially increased at higher speeds and loads carried in the trailer. Before beginning travel it is necessary to appropriately adjust trailer braking force, by appropriate brake force regulator setting (applies to pneumatic brake systems).
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DANGER Tipping may only be performed when trailer is hitched to tractor. Do NOT tip load box in strong gusty winds conditions. Movement and travel is forbidden with raised load box. Take particular care while working near electric power lines. Before tipping load box remove hydraulic cylinder suspension blocks - block rocker arms.
4.9 DISCONNECTING FROM TRACTOR In order to disconnect the trailer from the tractor perform the following: • stop tractor, immobilise trailer with parking brake and if needed place wedges under wheels, • if trailer equipped with hydraulic support - set hydraulic support operating valve in position "O”, take load off drawbar using hydraulic support;...
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• Regularly check and maintain correct pressure in tyres according to instructions (especially if trailer is not used for a longer period). • Pressure and tyres should be also checked after the whole day of intensive work. Please note that higher temperatures could raise tire pressure by as much as 1 bar. At high temperatures and pressure reduced load or speed.
SECTION TECHNICAL MAINTENANCE INSPECTION AND REGULATION OF WHEEL AXLE BEARINGS REGULATION OF MAIN BRAKES REGULATION OF MAIN BRAKES PNEUMATIC SYSTEM OPERATION HYDRAULIC SYSTEM OPERATION BLOCK SETTING REGULATION HOOK SETTING REGULATION LUBRICATION STORAGE TRAILER PREPARATION FOR END OF SEASON TIGHTENING TORQUE FOR NUT AND BOLT CONNECTIONS FAULTS AND MEANS OF REMEDYING THEM LIST OF BULBS...
5.1 INSPECTION AND REGULATION OF WHEEL AXLE BEARINGS In newly purchased trailer, after covering a distance of 100 km, while during further use – after 6 months of vehicle use check and regulate wheel axle bearings when needed. Worn or damaged bearing should be replaced.
If slack is felt, it is necessary to adjust bearing. Unusual sounds coming from bearing may be symptoms of excess wear, dirt or damage. In such an event the bearing, together with sealing ring, should be replaced with new parts. Bearing regulation should be performed according to the following instructions –...
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• as a result of wear of brake shoe linings between lining and drum there is excessive slack and reduced braking effectiveness. • wheel brakes do not brake evenly or simultaneously. If brakes are correctly regulated, braking of trailer road wheel takes place simultaneously. Brakes regulation consists of changing setting of axle shaft expander arm (2) in relation to expander shaft (1).
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TABLE 5.2 MAIN BRAKE BRAKING FORCE MAIN BRAKE BRAKING FORCE UNIT Regulation should be conducted separately for each wheel. After proper brake regulation, at ° full braking the axle shaft expander arm should create an angle of 90 with pneumatic ram piston.
With properly regulated brakes, trailer parking brake braking force should reach a value not less than that given in table (5.3). Difference in braking force of left and right wheel may not be greater than 30%, considering that 100% constitutes greater force. TABLE 5.3 PARKING BRAKE BRAKING FORCE PARKING BRAKE BRAKING FORCE UNIT...
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mandrel should automatically close and stop air flow from tank. Annually before the winter period unscrew drain valve and clean off accumulated dirt. Replace copper seal. DRAWING 5.3A AIR TANK WITH WATER RELEASE VALVE (1) air tank, (2) water release valve Depending on trailer working conditions, but not less than once in three months, take out and clean air filter inserts, which are placed in pneumatic system connection conduits.
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DANGER Before proceeding to dismantle filter, reduce pressure in supply conduit. While disengaging filter slide lock, hold cover with other hand. Stand away from filter cover vertical direction. DRAWING 5.4A AIR FILTER (1) securing slide lock, (2) air filter cover The insert and the air filter body should be cleaned at least every 3 months of trailer use.
Connection should be inspected every time before connecting trailer to tractor. During connection make sure that tractor socket is not damaged and is maintained in the due cleanliness. DRAWING 5.5A CONDUIT CONNECTIONS (1) rubber seal, (2) security cover 5.5 HYDRAULIC SYSTEM OPERATION Always adhere to the principle that the oil in the trailer hydraulic system and in the tractor hydraulic system are the same type.
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confirmation of damage of hydraulic ram cylinders they must be replaced or repaired. In such an event the whole set of seals must be changed. Hydraulic conduits should be replaced after 4 years of trailer use. Detailed tightness and technical condition inspection of hydraulic system should be made at least annually.
occurrence of irritation consultant 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. Oil fires should be quenched with the use of carbon dioxide, foam or extinguisher steam.
Block position is described in table (5.5). 5.7 HOOK SETTING REGULATION Trailer T285 enables connection with load boxes, with hitching eye at height of 1 570 mm (standard, according to DIN 30722-1) or 1,450 mm. Changing height of hook should be performed by two persons.
DRAWING 5.7A HOOK SETTING REGULATION (1) hook, (2) bolt connection 5.8 LUBRICATION Trailer lubrication must be carried out in places indicated in figures (5.8A) & (5.9A), and also detailed in table (5.6). TABLE 5.6 GREASING POINTS NUMBER OF TYPE OF GREASING NAME GREASING...
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NUMBER OF TYPE OF GREASING NAME GREASING GREASE FREQUENCY POINTS Wheel bearings permanent 24 months Axle expander shaft sleeves permanent 6 months Handbrake pin permanent 3 – 4 months Handbrake bolt permanent 3 – 4 months Handbrake cable guide permanent 3 –...
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DRAWING 5.9A TRAILER'S GREASING POINTS Trailer greasing should be performed with the aid of a manually or foot operated grease gun, filled with generally available permanent grease. After greasing the trailer according to instructions, wipe off excess grease. Changing grease in wheel hub axle bearings should be entrusted to professional service.
During trailer use the user is obliged to observe greasing instructions according to attached schedule. Excess greasing substance causes depositing additional contaminants in places requiring greasing, therefore it is essential to keep individual machine elements clean. 5.9 STORAGE After finishing work with trailer cleaned thoroughly and wash with water jet. In the event of damage to the paint coat, clean rust and dust from damaged area, degrease and then paint with undercoat and after it is dry paint with surface coat paint retaining colour uniformity and even thickness of protective coating.
5.11 TIGHTENING TORQUE FOR NUT AND BOLT CONNECTIONS Unless other tightening parameters are given, during maintenance repair work apply appropriate torque to tightening nut and bolt connections. Recommended tightening torque of most frequently applied nut and bolt connections are given in table (5.7). Given values apply to non greased steel bolts.
DRAWING 5.10A BOLT WITH METRIC THREAD (1) bolt strength class, (d) thread diameter 5.12 FAULTS AND MEANS OF REMEDYING THEM TABLE 5.8 FAULTS AND MEANS OF REMEDYING THEM FAULT CAUSE REMEDY Brake system pneumatic Connect brake conduit. conduits not connected Damaged pneumatic Replace system connection conduit...
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