Audi A4, S4

since 2000 of release

Repair and car operation



Audi A4, S4
+ Introduction
+ Governing bodies and receptions of safe operation
+ Current leaving and service
+ Engine
+ Systems of cooling, 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
   Security measures at work
   - Suspension bracket of forward wheels
      General information
      Removal and installation of an amortization rack
      Removal and installation shock-absorber/dismantling of an amortization rack
   + Suspension bracket of back wheels
   + Corners of installation of wheels of the car
   + Steering and safety cushions
+ Body
+ Onboard electric equipment


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Suspension bracket of forward wheels

General information

Suspension bracket of forward wheels

1 — the Support
2 — Amortizatsionaya is resistant
3 — the Console
4 — the Beam of the power unit
5 — the Stabilizer of cross-section stability
6 — the Power shaft
7 — the Tripode Hinge
8 — the Back lever

9 — Steering draft
10 — the Forward lever
11 — the Rotary support
12 — Gidroopora
13 — the Directing lever
14 — the Connecting bar
15 — the Bearing lever

Elements of a suspension bracket of forward wheels

1 — the Bolt, 75Нм
2 — the Washer
3 — the Bolt. Surely replace
4 — the suspension bracket Lever top back. A support replace
5 — the Bolt, 7Нм
6 — the Bolt
7 — the being self-stopped nut, 50Нм, surely replace
8 — the Bolt
9 — the being self-stopped nut, 40Нм, surely replace
10 — the suspension bracket Lever top forward. Can act in film only together with a support
11 — Amortizatsionaya is resistant
12 — the Bolt. Surely replace
13 — the Directing lever with a hydrosupport. If on a hydrosupport there are considerable leakages of oil, it is necessary to replace a support
14 — the Nut, 120Нм, being self-stopped. Surely replace
15 — the Case of the bearing of a wheel
16 — the Bolt with a fillet, surely replace. Inhaling moment:
bolt М14: 115Нм and then tighten on 180 °;
bolt М16: 190Нм and then tighten on 180 °;
17 — the Bolt, 10Нм
18 — the Cover
19 — the Nut, 90Нм, being self-stopped. Surely replace
20 — the Bolt

21 — the Support of a beam of the power unit
22 — the Bolt, 55Нм
23 — the Bolt, 110Нм and then tighten on 90 °. Surely replace
24 — the Bolt, 40Нм and then tighten on 90 °. Surely replace
25 — the Rod
26 — the Bolt, 40Нм and then tighten on 90 °. Surely replace
27 — the Bearing lever bottom
28 — the Bolt. Surely replace
29 — the Bolt, 75Нм. Surely replace
30 — the Beam of the power unit. Attention: Do not lift the car for a beam of the power unit
31 — the Nut, 70Нм and then tighten on 180 °. Surely replace
32 — the Nut, 70Нм and then tighten on 180 °. Surely replace
33 — the Screw with an internal polyhedron. Previously tighten the moment 15Нм, then the next moment:
M8 screw = 40Нм
M10 screw = 70Нм
34 — Podkladnaya a plate
35 — the Power shaft
36 — the Bolt. Surely replace
37 — the Nut, 50Нм and then tighten on 90 °. Surely replace
38 — the Nut with a fillet, 50Нм. Surely replace

The four-lever, independent suspension bracket of forward wheels has amortization racks of McPherson and the torsionny stabilizer of cross-section stability.

Amortization racks consist of cylindrical screw springs, shock-absorbers in the form of a double pipe and the top support of the big size. The stabilizer does not participate in the direction of wheels, and through connecting bars is connected with amortization racks.

The amortization rack is fixed by bolts to a support of the top lever and to the forward cross-section lever.

Optimum running characteristics and the minimum wear of tires it is reached only in that case when wheels occupy the correct situation. At the wrong wear of tires, and also at insufficient stability on the road it is necessary to make optical measurements and, if necessary, to adjust corners of installation of wheels.

Transfer of a torque of the power unit on wheels is carried out through two power shafts, each of which, via two hinges of equal angular speeds, is connected with wheels and the main transfer.