Audi 80/Avant (B4)

since 1991-1995 of release

Repair and car operation



Audi 80/Avant
- Technical specification
   Engines
   Transmissions
   Body
   Chassis
   15-inch wheels
   Brake system
   Seats
   Passive safety
   Full drive
   Distributive Torsen-differential
   Dynamics of movement at a dry paving
   Instructions on operation for all-wheel drive cars
   Blocking of differential of the back bridge
   Motor compartment
   Regular servicing
   Workplace organization
   Lubricant works
   Consumption of oil
   Right choice of engine oil
   Replacement of engine oil and oil filter
   Check of level of 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
   Control of level of ATF in an automatic transmission
   Check of level of oil in the main transfer of an automatic transmission
   ATF replacement
   Greasing of hummock drives, hinges and locks
+ Engines
+ System of production of the fulfilled gases
+ cooling System
+ Fuel tank and fuel pump
+ Air filter and airintaking channels
+ injection System
+ Coupling
+ Transmission and transmission
+ Suspension bracket and steering
+ Brake system
+ Anti-blocking system of brakes
+ Wheels and tires
+ Body electrosystem
+ ignition System
+ Lighting
+ Signalling devices
+ Devices and auxiliary devices
+ Heating and ventilation
+ body Elements
+ Search of malfunctions
+ Specifications





Chassis

Zadny Bridge

For front-wheel and all-wheel drive models there was a need for the new concept of the back bridge in connection with a big luggage compartment and a leaning-back back of a back seat. The uniform structure of a body formed a basis for development both besprivodny, and the leading back bridge in models with a full drive.

For front-wheel models the back bridge with a suspension bracket of wheels on the longitudinal levers connected by a beam and strengthened on a body was chosen. Such design consists of two rigid on a bend and torsion of longitudinal levers of the tubular section connected among themselves by rigid on a bend, but a P-shaped cross-section beam working for torsion. The additional stabilizer is located across the car at an angle to a beam of the bridge and sharnirno is attached to a body. Thereby high cross-section rigidity of the bridge and optimum course stability is reached.

Amortization racks transfer vertical forces to a body. Springs are located as it is possible below not to conceal volume of a luggage compartment.

Such constructive solution of the back bridge with a suspension bracket of wheels on the longitudinal levers connected by a beam, strengthened on a body, provides that at joint turn of an axis of levers of both wheels the bridge behaves as the bridge with a suspension bracket of wheels on longitudinal levers, and when twisting beam – as the bridge with a suspension bracket of wheels on diagonal levers.

Zadny Bridge of the all-wheel drive Audi 80 models is supplied with directing system of a suspension bracket of wheels with dual cross-section levers.

The directing system of a suspension bracket consists respectively of two triangular cross-section levers with the additional vertical lever. Shock-absorbers and springs are assembled in compact amortization racks.

Position of the top cross-section levers over wheels helps to place the longitudinal levers located below in coming-out wheel niches that in turn is the precondition for an optimum form of a luggage compartment. The reducer of the back bridge is attached by bolts to a stretcher which, in turn, is attached by bolts to a body by means of pillows.

On the front-wheel Audi 80 models there is a so-called back bridge with a suspension bracket of wheels on the longitudinal levers connected by a beam and strengthened on a body. Structurally the bridge consists of two tubular longitudinal levers which are connected by an elastic P-shaped profile.

Peredny Bridge

Known already forward bridge with a suspension bracket of wheels on amortization racks was in the changed form is transferred with compartment Audi, and also from model predecessor. Additional application of elastic elements does of polyurethane possible convenient "proglatyvaniye" even big movement of a body.

The stabilizer of cross-section stability attached to both cross-section levers, considerably reduces a list arising in turn, and also "swallows" the blows received by a suspension bracket at arrival on roughness.

In comparison with the previous model the track of the forward bridge is expanded on 38 mm.

Audi quattro (all-wheel drive model) has absolutely other design of the back bridge. It is a question of the so-called bridge with dual cross-section levers. On an illustration the drive of back wheels is also visible.