Audi A4

Since 1994 of release

Repair and car operation


Audi А4
+ Running gear
+ Regular servicing
+ Engines
+ Turbo-supercharging
+ Exhaust system
+ Cooling system
+ Fuel tank and the fuel pump
+ The air filter and channels всасывания
+ Injection system
+ Coupling
- Transmission and the main transfer
   Mechanical transmission
   Noise in a transmission
   Automatic transmission
   Electronic control by a transmission
   The main transfer
   Power shafts
   Check of cuffs of power shafts
   The help at malfunctions
+ Suspension bracket of wheels and steering
+ Brakes
+ Wheels and tyres
+ The electrotechnical equipment
+ Ignition system
+ Illumination
+ The alarm equipment
+ Tools and devices
+ Heating and ventilation
+ Body details
+ Salon
Search of malfunctions
Technical characteristics









The help at malfunctions

Power shafts

Usually to power shafts there are no problems. Their durability depends, certainly, on style of driving of the car. Start with completely wrung out pedal of gas and the turned forward wheels and a start of motion with turned forward wheels lead to occurrence of premature defect.

  • In hinges of power shafts defects which then completely disappear are often suddenly shown. "Dormant period" can be stretched about several days and kilometres of the passed way.
  • At giving of gas and a gear change rhythmical beating or clicking sounds are characteristic. If these sounds still change depending on wheel turn, that, possibly, defect in the hinge from outside wheels.
  • Vibration and wheel shiver at the turned wheels also specify in the damaged external hinge.

The new bolt with a flange and with шестигранной a head for шарнирного a shaft outside on a wheel nave as it is stretched at an inhaling is necessary to you and consequently with a view of safety should not be put repeatedly. Then a new lining for the internal hinge of a shaft (only in cars with the four-cylinder engine and a mechanical transmission).

 PERFORMANCE ORDER

  1. Remove a cap of a wheel or the central cover at rims from easy metals.
  2. Loosen the wheel bolts.
  3. Loosen the a bolt with шестигранной a head on a wheel nave; for this purpose Audi should stand reliably on the earth.
  4. Lift a forward part of the car and fix.
  5. Remove a wheel.
  6. If it is necessary, dismantle a power shaft cover on a transmission.
  7. Take out from an arm a wire to the gauge of number of turns ABS, slightly delay back the gauge of number of turns.
  8. Unscrew bolts of shaft with an internal multigear head on a transmission.
  9. Wring out карданный a shaft from a flange from outside a drive on a transmission.
  10. To take out a shaft, turn in appropriate way a wheel.
  11. Installation: put a new lining on the internal hinge (only in cars with the four-cylinder engine and a mechanical transmission). For this purpose remove from a lining a protective film.
  12. In the beginning insert a power shaft from outside wheels. Then cross-wise tighten fixing bolts on a power shaft flange from outside transmissions (bolts М8: 40 Nanometers; bolts М10: 77 Nanometers). Do not forget подкладные пластиночки in гомокинетических hinges!
  13. Lower the car, block wheels. Tighten a new bolt of a nave of an axis how it is shown more low:
  14. Bolt М14: tighten on 115 Nanometers and then on 1/4 turns (90 ).
  15. Bolt М16: tighten on 190 Nanometers and then on 1/4 turns (90 ).
  16. Again push manually the gauge of number of turns ABS against the stop.

 Council: Audi describes dismantle of a shaft after removal of cross-section steering draught and both bearings of hinges of an axis. But power shaft dismantle can be spent us – as is described above – without unscrewing of the case of the wheel bearing (the well-known name a rotary fist).


The arrow specifies in the central bolt of the external hinge which should be removed at dismantle of power shafts.


The internal hinge acts in film from a transmission after easing of six bolts with internal multigear heads (arrow). Here the type hinge трипод on an automatic transmission is shown.

Dismantle of a back power shaft quattro

For assemblage the new combined bolt with шестигранной a head for шарнирного a shaft on a nave of a wheel from an outer side is necessary to you. The old bolt from safety reasons cannot be used again. Besides, the new lining for the internal hinge of a shaft, подкладная a washer and самоконтрящаяся a nut for fastening of the lever of an axis above, and also самоконтрящаяся a nut for a connecting bar of the stabilizer is necessary to you.

 PERFORMANCE ORDER

  1. Remove a cap of a wheel or facing of a rim from easy metal in the middle.
  2. Loosen the wheel bolts.
  3. Loosen the a wheel bolt with шестигранной a head in a wheel nave; for this purpose Audi should stand reliably on the earth.
  4. Lift and fix a back part of the car.
  5. Dismantle a wheel.
  6. For dismantle of the left power shaft dismantle the intermediate muffler of system of an exhaust (the head exhaust System).
  7. Unscrew bolts of a shaft with an internal multigear head on differential of a back axis.
  8. Slightly shift back the gauge of number of turns ABS.
  9. Disconnect a fixing bolt of a connecting bar of the stabilizer from the case of the wheel bearing (a rotary fist).
  10. Unscrew the axis lever above from the case of the wheel bearing (a rotary fist).
  11. Wring out шарнирный a shaft from a drive flange on a transmission.
  12. Take out a shaft.
  13. Installation: put a new lining on the internal hinge. For this purpose remove a protective film on a lining.
  14. Establish шарнирный a shaft in the beginning from outside wheels. Then cross-wise tighten fixing bolts on a power shaft flange from outside transmissions (40 Nanometers). Do not forget подкладные a plate
  15. Again mount an axis suspension bracket. In the beginning screw up manually screw connection of the case of the wheel bearing and the axis lever. Tighten a nut of a connecting bar of the stabilizer on 50 Nanometers.
  16. Again mount exhaust system.
  17. Lower the car. Block wheels.
  18. Tighten a new bolt of a nave of an axis how it is told further: tighten on 115 Nanometers and then tighten on 1/4 turns (90 ).
  19. Tighten definitively screw connection of the case of the wheel bearing/lever of an axis in the car standing on wheels: on 70 Nanometers and then on 1/4 turns (90 ).
  20. Manually again push against the stop the gauge of number of turns ABS.

 Councils: do not move cars with dismantled шарнирным shaft, the wheel bearing differently will be damaged. As a last resort, establish only the external hinge.

Depending on model of the engine and a transmission in Audi different power shafts are put. At purchase of a new detail have at itself identification number of the engine and the car.

Dismantle of the external hinge

For all models

1 – a lock ring;
2 – a remote washer;
3 – тарельчатая a spring.


 PERFORMANCE ORDER

  1. Dismantle a power shaft.
  2. On a serviceable cuff unbend big шланговый a collar, shift a protective cover.
  3. If the cuff is damaged, replace it completely.
  4. Aluminium or synthetic hammer strongly strike from within on the hinge and thus remove it from a shaft.
  5. Before installation of the new hinge insert a new lock ring into a power shaft flute.
  6. Establish тарельчатую a spring and a remote washer – if they are established in the given version of a power shaft – how is shown in drawing above. Do not forget to put a rubber cuff.
  7. At installation hammer in the hinge on a shaft a synthetic hammer so that the lock ring has entered into a groove.
  8. Grease the hinge: in the new hinge with external diameter 89 mm are pressed 90 г greasings MoS2 (VW G6), from them 40 г into the hinge and 50 г in a cuff.
  9. More greasings 98 mm are put in hinges with external diameter: 120 г greasings MoS2 (VW G6) it is distributed as follows: 80 г in the hinge and 40 г in a cuff.
  10. In the hinges which were in the use, greasing only is added.
  11. Strong clamp cuff clips.

Dismantle of the internal hinge

Gomokinetichesky hinges

1 – a lock ring;
2 – internal гомокинетический the hinge;
3 – a power shaft.


 PERFORMANCE ORDER

  1. Dismantle a power shaft.
  2. Having shown the patience, two narrow screw-drivers take out from a groove on the shaft end a safety ring which holds the hinge on a power shaft.
  3. Now remove приводной the hinge from a shaft; as a last resort slightly help itself a plastic or aluminium hammer.
  4. If the hinge does not act in film in such a way it needs to be wrung out from a shaft in a workshop by means of a repair press.
  5. At installation in the beginning put a cuff.
  6. In the version with тарельчатой a spring before hinge installation pull over a shaft тарельчатую a spring or check up its arrangement: it should be convex to the hinge on external edge.
  7. Pull the hinge over a shaft, put a lock ring.
  8. In such a way the lock ring will not move in a groove. Therefore clamp a power shaft in a vice, put the big screw-driver or a pipe scrap to an internal part of the hinge and strongly strike a hammer on a screw-driver.
  9. Counteracting force тарельчатой springs, the hinge will move a little back – the lock ring can drop in in a groove.
  10. Grease the hinge: in the new hinge with external diameter 100 mm press 80 г greasings MoS2 (VW G6), from them 30 г into the hinge and 50 г in a cuff.
  11. More greasings there are on the hinge with external diameter 108 mm: 120 г greasings MoS2 (VW G6) are distributed as follows: 35 г in the hinge and 85 г in a cuff.
  12. In the hinges which were in the use, greasing only add.
  13. Before hinge screwing up (or a cuff flange) grease with hermetic VW D3 a sealing surface between a flange of a cuff and the hinge.

Dismantle of the internal hinge

Type hinges трипод

The type hinge трипод (1) does not act in film from a power shaft. Business in another way is with гомокинетическими hinges, here is direct from a power shaft (3) act in film the external hinge (2) and the internal hinge (4).


 PERFORMANCE ORDER

  1. Type hinges трипод do not act in film from a power shaft. They are on sale as spare parts in gathering with shaft and a protective cuff. Therefore at replacement dismantle only the external hinge and replace a shaft with the internal hinge.
  2. If the protective cuff трипода the external hinge of a shaft is dismantled is defective only. In this case the cuff can be advanced on the cleared power shaft to трипода. A critical position: the cuff needs to be raised cautiously over a convex part in the middle of a shaft. For this purpose grease camber and raise a cuff over a thickening stupid round tools (the spoon handle).
  3. The hinge is filled 140 г greasings G 000 605. At cuff replacement in the hinges which were in the use, add greasing.