Audi 80/Avant (B4)

Since 1991-1995 of release

Repair and car operation

Audi 80/Avant
- The description
   The chassis
   15-inch wheels
   Brake system
   Passive safety
   Full drive
   Distributive Torsen-differential
   Dynamics of movement at a dry road covering
   Instructions on operation for all-wheel drive cars
   Blocking of differential of the back bridge
   Motor compartment
   Regular servicing
   The workplace organisation
   Lubricant works
   The oil expense
   Correct choice of engine oil
   Replacement of engine oil and the oil filter
   Check of level of a working liquid of the amplifier of a wheel
   Check of level of oil of a mechanical transmission
   Check of level of oil in a drive of the back bridge
   The control of level ATF in an automatic transmission
   Check of level of oil in the main transfer of an automatic transmission
   Replacement ATF
   Greasing тросовых drives, hinges and locks
+ Engines
+ System of release of the fulfilled gases
+ Cooling system
+ Fuel tank and the fuel pump
+ The air filter and воздухозаборные channels
+ Injection system
+ Coupling
+ Transmission and transmission
+ Suspension bracket and steering
+ Brake system
+ Antiblocking system of brakes
+ Wheels and tyres
+ Kuzovnaja electrosystem
+ Ignition system
+ Illumination
+ Signalling devices
+ Devices and auxiliary devices
+ Heating and ventilation
+ Body elements
+ Search of malfunctions
+ Specifications


Blocking of differential of the back bridge

The differential of the back bridge on all-wheel drive cars is supplied by blocking of differential dependent on speed. Blocking gives the chance to both back wheels to rotate with identical frequency, that is prevents проворачивание one separate wheel.

All it reflected as the device increasing coupling of a wheel with road if the car has got stuck in snow or a dirt, therefore blocking is automatically disconnected at speed above 25 km/h.

In the standing car differential blocking joins the switch on the central console. Executing body is the block of management located under a back seat which releases the vacuum pipeline conducting to blocking, or, on the contrary, closes it at speed above 25 km/h. Depression proceeds from the inlet pipeline of the engine.

Under a back seat also there are elements of a full drive; for example, the block of management of blocking of differential (1) and the accelerating switch (2) for antiblocking system which is built in only on all-wheel drive cars.