Audi A4, S4

Since 2000 of release

Repair and car operation

Suspension bracket of forward wheels

The general data

Elements of a suspension bracket of forward wheels

1 — the Bolt, 75Нм 2 — the Washer 3 — the Bolt. Necessarily replace 4 — the suspension bracket Lever top back. A support replace 5 — the Bolt, 7Нм 6 — the Bolt 7 — the Self-stopped nut, 50Нм, necessarily replace 8 — the Bolt 9 — the Self-stopped nut, 40Нм, necessarily replace 10 — the suspension bracket Lever top forward. Can act in film only together with a support 11 — Amortizatsionaja a rack 12 — the Bolt. Necessarily replace 13 — the Directing lever with a hydrosupport. If on a hydrosupport there are considerable leaks of oil, it is necessary to replace a support 14 — the Nut, 120Нм, self-stopped. Necessarily replace 15 — the Case of the bearing of a wheel 16 — the Bolt with a fillet, necessarily replace. The 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, self-stopped. Necessarily 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 °. Necessarily replace 24 — the Bolt, 40Нм and then tighten on 90 °. Necessarily replace 25 — the Rod 26 — the Bolt, 40Нм and then tighten on 90 °. Necessarily replace 27 — the Bearing lever bottom 28 — the Bolt. Necessarily replace 29 — the Bolt, 75Нм. Necessarily 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 °. Necessarily replace 32 — the Nut, 70Нм and then tighten on 180 °. Necessarily replace 33 — the Screw with an internal polyhedron. Preliminary tighten the moment 15Нм, then a following moment: Screw M8 = 40Нм Screw M10 = 70Нм 34 — Podkladnaja a plate 35 — the Power shaft 36 — the Bolt. Necessarily replace 37 — the Nut, 50Нм and then tighten on 90 °. Necessarily replace 38 — the Nut with a fillet, 50Нм. Necessarily replace

Четырёхрычажная, the independent suspension bracket of forward wheels has amortisation racks McPherson and торсионный the stabilizer of cross-section stability.

Amortisation 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 a direction of wheels, and through connecting bars is connected with amortisation racks.

The amortisation 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 deterioration of tyres it is reached only in that case when wheels occupy correct position. At wrong deterioration of tyres, and also at insufficient stability on road it is necessary to make optical measurements and, if necessary, to adjust corners of installation of wheels.

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