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Audi A4, S4since 2000 releaseRepair and operation of the car |
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Audi A4, S4 + Introduction + Governing bodies and methods of safe operation - Current leaving and service Specifications Maintenance approach term indicator Schedule of routine maintenance General information on control Check of levels of liquids, control of leaks Check of a condition of tires and pressure in them. Designation of tires and disks of wheels. Rotation and replacement of wheels Replacement of motive oil and oil filter Checks of brake system. Adjustment of the parking brake Check of fuel system Check of a state and replacement of hoses of a motive compartment, localization of leaks Check of a condition of ridge belts of the streaming drive of auxiliary units Check of functioning of the cooling system and frost resistance of cooling liquid Check of a condition of system of production of the fulfilled gases Check of level of oil of automatic transmission Visual control of a box of gear shifting and the main transfer on leaks, check of level and addition of oil Check of a state component of a suspension bracket and steering Check of a condition of protective covers of power shafts Check of level of liquid of system of hydrostrengthening of a wheel Check of the air conditioning system Greasing of limiters of doors, cylinders of locks, hook of a cowl, movable panel of the hatch of a roof Visual control of a seat belt and block of a safety cushion Check of operability of headlights and horn Check of a state, adjustment and replacement of brushes of screen wipers Check of a condition of the battery, care of it and charging Replacement of the battery of emergency supply of Telematik system Replacement of an element of the filter of air of salon / coal filter of purification of air Replacement of brake fluid Check and replacement of spark plugs. Check of a condition of high-voltage wires Replacement of an element of the air filter of the engine Replacement of the fuel filter Check of a state and tension of a gear belt + Engine + Cooling systems, heating and air conditioner + Power supply systems, release and decrease in toxicity of the fulfilled gases + Systems of electric equipment of the engine + Manual box of gear shifting + Automatic transmission + Coupling, power shafts and differential + Brake system + Suspension bracket and steering + Body + Onboard electric equipment |
Check of a condition of tires and pressure in them. Designation of tires and disks of wheels. Rotation and replacement of wheels Depending on model and equipment tires and disks of various sizes can be installed. Disks have depth of a press fitting of 38 mm. Depth of a press fitting is a distance from the middle of a disk to a persistent surface of a wheel on a brake disk or a drum. Wheel bolts for steel and light-alloy wheels have the identical sizes.
At a sports manner of driving it is recommended to increase pressure in lobbies and back tires by 0.2 atm. At increase in pressure it is necessary to proceed from a base-line value for various conditions of loading. Winter tires as a rule have pressure upon 0.2 atm. above than summer. It is necessary to consider recommendations of manufacturers of winter tires. As winter tires have restriction on speed, in sight of the driver the plate with the indication of the maximum speed has to be strengthened. Designations of disks Example: 6 J x 15 6 — disk width in inches J — an alphabetic reference of height and a contour of an onboard zakraina of a rim of a disk x — designation of an integral deep disk 15 — diameter of a disk in inches Admissible lateral beating on the onboard zakrayena of a disk: 0.8 mm; Admissible radial beating on the landing shelf of a disk: 0.5 mm. Designation of tires Example: 195/70 R 14 89 H 195 — tire width in mm /70 — height relation to width (height of cross section of the tire makes 70% of width) If separate data on width relation to height are absent (for example, 175 R 14), means it is about the "normal" relation. It makes 82%. N — a class of speed, N: to 210 km/h (on new tires it is brought not always). R — a radial design 14 — the disk size in inches 89 — loading capacity parameter
N — designation of admissible maximum speed. The letter of speed stands behind the tire size. Symbols of speed belong as 6.6 Indicators of wear of a protector of the tire up to the depth of 1.6 mm are in the places designated on TWIK sidewall summer and to winter tires. Alphabetic references of speed are given in Specifications. Date of production of the tire Date of production of the tire costs on the tire in a code of the producer Example: DOT CUL2 UM8 019 TUBELESS DOT — Department of Transportation (the Ministry of Transport of the USA) CU — reduction of the name of the manufacturer L2 — the tire size UM8 — execution of the tire 4600 — date of production - the 46th working week 2000 TUBELESS — tubeless (TUBETYPE - the tire with a chamber) Regular check of a condition of tires will allow you to avoid the troubles connected with stops in way because of the lowered wheel. Besides, such checks give valuable information on possible problems with a steering and a suspension bracket before emergence in them serious damages.
Pay attention to any unusual wear of protectors. Such defects of a protector as cavities, cambers, flattening and stronger wear on the one hand indicate violation of corners of installation of forward wheels and/or balancing of a wheel. At identification any of the listed defects it is necessary to address for their adjustment in a tire workshop. Carefully check the tire for existence of cuts, punctures and the got stuck nails or buttons. Sometimes after piercing of the tire a nail it still some time holds pressure or lowers very slowly. At suspicion such "a slow puncture" at first check tightness of a nipple of the gate of a rating for existence. Then examine a protector on presence of the got stuck strangers of subjects or repaired before the punctures which are again passing air. If there is a suspicion that there is a puncture, it is possible to make sure of its existence, having moistened the suspected site with soap water. In the presence of leak solution will start bubbling. If a puncture not too big, the tire it is usually possible to repair in any tire workshop. Carefully examine internal lateral surfaces of tires on existence of signs of leak of brake fluid on them. If those are available, immediately check brake system. Maintenance in tires of the correct pressure increases the term of their service, helps to save fuel and improves the general comfort of the movement. The special manometer is necessary for check of pressure.
Always check pressure on cold tires (i.e. to a trip on the car). If to check pressure on the warm or warmed tires, it will lead to overestimate of indications of the manometer because of thermal expansion of tires. In this case it is never necessary to lower pressure since after cooling of the tire it will be lower than norm. Screw together a protective cap from the gate of a rating acting from a disk of a wheel or from a nave cap then densely press a manometer nozzle to the gate. Consider instrument readings and compare them with recommended in Specifications. Do not forget to install into place a protective cap for prevention of hit in the mechanism of a nipple of dirt and moisture. Check pressure in all four tires and if necessary pump up them to the recommended value of pressure. Do not forget to support the demanded pressure and in a spare wheel. Check of pressure of air in tires An inspection of pressure of air should be carried out only on cold tires.
Air pressure in tires is checked once a month, and also when carrying out service (including spare a wheel). Besides, pressure of air need to be checked before each long trip since in this case temperature load of tires increases. Necessary pressure of air in tires is given in the sticker which is on inside of a cover of a fuel tank.
Pressure of air of narrow tires of a spare wheel is specified on a disk sidewall. Air pressure in tires changes depending on change of temperature of air on 10 °C approximately on 0.1 atm. It should be considered at monitoring procedure of pressure of air in tires in garage — especially in the winter. Example: Temperature in garage about + 20 °C Temperature of external air is about 0 °C The established air pressure in tires = the specified air pressure + 0.2 atm. The values of pressure of air in tires given for small loading of the car are the minimum values providing comfortableness of the movement. The elevated pressure of air in tires provided at the raised car loading positively affects controllability of the car as well at small loading and is quite admissible. Smoothness of swing thus, however, decreases a little. Check of the gate of tires
Examples of characteristic wear of protectors of tires Lateral wear Wrong disorder of wheels (wear on the one hand) Repair or replace suspension bracket details. Too sharp turns Reduce speed! Central wear
Excessive pressure Excessive pressure in the tire results in the accelerated wear of the central part of a protector, decrease in coupling with the road, more rigid movement and increase of danger of fatal damage of a slope.Check and adjust pressure. If you had to pump up tires for transportation of heavy freights to the value of pressure specified for this purpose in Specifications, do not forget after that to pit it upon transition to the normal mode of operation. Uneven wear
Wrong disorder or vybeg Repair or replace suspension bracket details. Defect of a suspension bracket Repair or replace suspension bracket details. Wheels are debalanced Make balancing of wheels. Convergence of forward wheels is incorrectly established Adjust corners of installation of forward wheels.
Rotation of wheels Rotation of wheels is allowed only at the identical size of lobbies and back wheels. Rotation of wheels make each 5000-10000 km depending on wear of tires. Thus keep the direction of rotation of wheels. Rotation needs to be made before emergence of characteristic signs of wear of tires. A characteristic sign of wear at tires of forward wheels is wear of a humeral zone of a protector, and at tires of back wheels — the middle of a protector. At each rotation of wheels it is necessary to clear carefully them from the inside. After rotation of wheels check and if necessary modify air pressure in tires (see above). Bolts of fastening of wheels can weaken if they were not brought up with the inhaling moment specified in Specifications. After replacement of wheels check the inhaling moment. Spare wheel of the facilitated design At damage of the tire the spare wheel of the facilitated design can be used as a normal wheel; it is recommended to replace, however, as soon as possible it with a normal wheel as it is calculated on limited run as much as possible to 20 000 km. When replacing tires the tire of a spare wheel can be mounted on the driving wheel if the tire corresponds to execution of tires of driving wheels. If the tire is more senior than 6 years, it is recommended to be applied only at damage of the tire.
It therefore, it is provided only for short-term use, at observance of the ordered air pressure in tires and the maximum speed of 80 km/h. Operation with more, than one spare wheel of the facilitated design is inadmissible. Replacement of wheels The automobile jack is intended only for short-term raising of the car when replacing a wheel. The basic platform of an automobile jack has to be firm and equal. In case of friable soil use a lining for an automobile jack. Under the car it is necessary to apply a false trestle to work. Bolts of fastening of wheels
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