Audi A4, S4

since 2000 of release

Repair and car operation

Suspension bracket of forward wheels

General information

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.