Audi A4, S4

since 2000 release

Repair and operation of the car



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 installation of light-alloy wheels of other producers bolts of other sizes can be demanded.

The equipment is continuously improved. It is possible that for older models other values of pressure in tires are admissible. The sizes specified in documents to the car are defining.

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

If between data 14 and 89 there is a designation of M+S, it is about tires with a winter protector.

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.

Tires are equipped with the built-in strips of indication of wear of a protector which are bared at decrease in depth of a protector to 1.6 mm then tires are considered as the worn-out. This size represents minimum admissible depth of a protector; it is in most cases recommended to replace tires, which depth of a protector of 2 mm and less. Depth of a protector can also be determined by the simple and inexpensive adaptation known under the name of the measuring instrument of depth of a protector.

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 keep the exact manometer in the ware box. Indications of the manometers which are built in nozzles of air hoses at stations of service often happen inexact.

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.

Turn off a gate cap.

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.

At use of winter tires pressure of air has to be increased by 0.2 atm. in relation to the established value.

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

The used extenders of gates have to be checked for existence of the damages and pollution conducting to leakage. If necessary extenders should be replaced.

Gate of tires
1 and 2 — Rubber and metal caps
3 — the Gate
4 — the gate Case

 PERFORMANCE ORDER

  1. Turn off a protective cap and the extender.
  2. Apply a small amount of soap solution or a saliva on the gate. If the air bubble is formed, tighten the gate 3 a protective cap 2.

It is necessary to apply only a protective cap to pulling up of the gate 2. 1 rubber protective caps, 4th gate.

  1. Again check the gate. If there are bubbles and the gate does not manage to be tightened, it should be replaced (work HUNDRED).
  2. Surely again establish into place a protective cap.

Examples of characteristic wear of protectors of tires

Lateral wear

Insufficient pressure in the tire leads to its overheat at the movement owing to an excessive deflection therefore the protector does not nestle sufficiently on a road surface. It leads to loss of coupling with the road and to excessive wear of a protector, not to mention danger of an exit of the tire out of operation as a result of an overheat. Check and adjust pressure.

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

Tires of forward wheels can unevenly wear out as a result of violation of adjustment of corners of installation of wheels.

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.

The Obtrepannost of edges of a pattern of a protector which is a wear sign best of all comes to light to the touch.

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.

There is a danger of accident! If the spare wheel of the facilitated design is mounted, owing to various sizes of tires it is necessary to reckon with change of dynamic properties of the car. Conform style of driving to this situation.

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.

 PERFORMANCE ORDER

  1. Put the car, whenever possible, on an equal platform. Strongly press a pedal of the parking brake. It is impossible to release the parking brake so far the car is lifted.
  2. Transfer the lever of the AT selector to situation "P". Protect the car from a spontaneous otkatyvaniye, having enclosed an antiretractable emphasis, etc.
  3. On the equal road: enclose an emphasis under diagonalno the located wheel in front and behind.
  4. On rises and descents: enclose an emphasis under both wheels of other bridge in a downward direction on descent.
  5. From a set of the onboard tool take out a key for wheels.
  6. Weaken bolts of fastening of wheels a key, but do not turn out them completely yet.
  7. Uncover an opening for installation of an automobile jack. Openings for installation of an automobile jack are behind arches of forward wheels and before arches of back wheels.
  8. Completely move a basic finger of a jack into an opening for installation of a jack. The automobile jack has to stand always vertically — as well on slopes.
  9. Lift the car to a wheel separation from soil.
  10. For prevention of sliding of the car completely (against the stop) implant a basic finger of a jack into an opening for installation of a jack on the car.
  1. Turn out the top bolt of fastening. Screw in the aligning pin from a set of the onboard tool in a carving opening. Turn out other bolts for fastening of wheels. Do not put bolts of fastening of wheels on sand or in dirt.
  1. Remove a wheel.

Bolts of fastening of wheels

 PERFORMANCE ORDER

  1. Replace the bolts of fastening of wheels having damages or traces of a rust.
  2. Do not oil bolts or jellied greasing. In case of damage of a carving to a nave of a wheel it is impossible to continue the movement. It is necessary to address on HUNDRED.
  3. Make cleaning of a surface of a prileganiye of a wheel and nave.
  4. Get and press a wheel.
  5. Screw bolts of fastening of a wheel and slightly tighten.
  6. Unscrew the aligning pin and screw the last bolt of fastening of a wheel.
  7. Lower the car. Remove an automobile jack and establish a cover on an opening for installation of a jack.
  8. Evenly cross-wise tighten all bolts of fastening of a wheel. The moment of an inhaling is specified in Specifications.

There is a danger of accident! Bolts of fastening of wheels can weaken if they were not brought up with the demanded moment. Therefore surely check the inhaling moment right after replacement of wheels.

Before laying of an automobile jack in an additional compartment under a trunk floor turn a basic finger of a jack back almost to a support.

Check and, if necessary, modify air pressure in tires.












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