Audi 80/Avant (B4)

since 1991-1995 of release

Repair and car operation



Audi 80/Avant
+ Technical specification
- Engines
   Basic elements
   Greasing system
   Case ventilation
   Visual check of the engine
   Running in of the new engine
   Engine service life
   Nominal and maximum frequency of rotation
   Restriction of frequency of rotation
   Measurement of pressure of compression
   List of malfunctions
   Provorachivaniye of the engine
   Hydraulic pushers
   Works on the GRM gear belt
   List of malfunctions
   Removal and installation of a head of the block of cylinders
   Removal and engine installation
+ 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





Provorachivaniye of the engine

For a provorachivaniye of a cranked shaft of the 4-cylinder engine manually it is necessary to put a key of 22 mm on a nut of a pulley of the generator. If the belt slips, it is necessary to press it.


Nuts of a cover of a head of the block of cylinders of the 5-cylinder engine should be twirled in the represented sequence at first by the next moments of an inhaling of 5 N • m, then 10 N • m, and in the last turn of 12 N • m.

At the left: on the 5-cylinder engine the crankshaft can be turned a nut of a pulley of the generator (a key of 24 mm). If the belt slips a little, it is necessary to load it with a hand.

On the right: a cranked shaft of the 6-cylinder engine turn the central bolt of a pulley of a cranked shaft. As the tool the 12-faced replaceable face head of 24 mm with a graggers or the lever is applied.


VMT is found, if the mark "About" appeared on a flywheel under edge of the case of a transmission (shooter).

At the left: one more mark of VMT at 6-cylinder engines is located on a pulley or the bottom protective cover of a gear belt (arrow).

On the right: at VMT of the moment of ignition of the first cylinder big openings of adjusting plates on both driving gear wheels of a camshaft are directed to the middle of the engine (shooter).

For carrying out some works it is necessary or to bring a cranked shaft into a certain situation, or to turn it.

 PERFORMANCE ORDER

  1. For this purpose in the car with a mechanical transmission on an equal surface it is necessary to include the fifth transfer and to roll away the car a little forward or back.
  2. On the 4-cylinder engine to put the bent cap key on 22 mm on the central nut of a pulley of the generator and to turn the engine through maple a belt. If the belt slips, it is necessary for pressing through between pulleys a free hand and by that to pull.
  3. On the 5-cylinder engine to put a rozhkovy wrench of 24 mm on the central nut of a pulley of the generator and to turn the engine in the same way, as 4-cylinder.
  4. On the 6-cylinder engine to put a 12-faced replaceable face head of 24 mm on the central bolt of a pulley of a cranked shaft and to turn a cranked shaft a graggers or the lever.
  5. Never turn the engine for a bolt of fastening of a gear wheel of a gear belt on distributive to a shaft at the removed casing of a gear belt! The gear belt can jump, result – engine damages.

Cylinder 1 installation in the provision of the top dead point (VMT) of the moment of ignition

In the four-cycle engine the piston two times come to the top dead point (VMT): the first time at ignition of the let-in gas mixture and the second time after emission of exhaust gases with beginning in summary repeated absorption of a mix of fuel/air. Usually at various adjusting works VMT of the moment of ignition of the first cylinder is necessary.

 PERFORMANCE ORDER

  1. 4-cylinder and 5-cylinder engines: to uncover, separating the breaker from the ignition distributor, a begunok of the distributor of ignition and a protective cover. Again to put on a begunok of the distributor and to turn the engine until contact a begunka will not be over a small label on the brink of the distributor. Thereby VMT is found.
  2. That this business was possible more exact, possibly, it is required to turn a cranked shaft a little in one or other party while in in a viewing opening of a transmission there will be no marking "About" on a flywheel at edge of a viewing opening.
  3. 6-cylinder engine: to remove a casing of a gear belt on the right and at the left (it is described below in this chapter).
  4. To turn a cranked shaft until both openings of fixing plates on both driving gear wheels of a camshaft will not be established inside the friend opposite to the friend (to one line).
  5. A few to turn a cranked shaft in one or other party while in a viewing opening of a cover of a transmission there will be no marking "About" on a flywheel at edge of a viewing opening.

Removal of a protective cover of the engine

The 6-cylinder engine is supplied with a protective cover which carries out shumoglusheniye function. Removal:

 PERFORMANCE ORDER

  1. To turn four high-speed locks a big screw-driver on 90 ° to the left.
  2. To remove a protective cover.

Removal of a cover of a head of the block of cylinders

 PERFORMANCE ORDER

  1. 4-cylinder engine: on the engine in capacity of 66 kW to remove the air filter.
  2. To remove a hose for air removal from a case. To disconnect a plait of wires if is available.
  3. To weaken a cable of a drive of "gas" and to extend it from a support.
  4. To unscrew fixing nuts.
  5. To remove overlays of rigidity.
  6. To lift a cover.
  7. If necessary to remove a maslootrazhatel.
  8. 5-cylinder engine: from an inlet collector to remove a hose of the amplifier of brakes.
  9. To remove the top part of an inlet collector and vpryskny nozzles (head «System of injection of KE-III-Jetronic»).
  10. To remove the distributive valve of stabilization of idling.
  11. To unscrew fixing nuts, to remove overlays of rigidity.
  12. To uncover.
  13. 6-cylinder engine: to remove protection of the engine.
  14. To unscrew lock bolts.
  15. To raise a cover.
  16. If necessary to remove a maslootrazhatel.
  17. At installation to put new laying.
  18. 4-and 5-cylinder engines: not to forget about a sheet overlay of rigidity under fixing nuts.
  19. 6-cylinder engine: slightly to grease laying of a cover of a head of the block of cylinders on internal and outer side with silicone antifrictional means of D 007 000 04.
  20. To put on all four sides between sealing laying of a head of the block of cylinders and a cover of the bearing of a camshaft it is a little «Silimate» AMV 174 004 01 from a warehouse zapchaty Audi. To watch that the opening for oil below on a cover of the bearing of a camshaft thus was not hammered.
  21. All types of engines: crosswisely to tighten the moment of 10 N • m of a nut or bolts, since the cover middle.