Mounted on the telescopic strut are a coil spring, a rubber compression buffer and an upper strut support. The upper support is attached to the body mudguard strut. The strut rests on the ball joint of the suspension arm.
The anti-roll bar is a bar, the knees of which are connected to the transverse suspension arms through rubber-metal hinges. The middle part of the rod is attached to the body with brackets with rubber cushions.
Wheel travel up, mm:
- cars with 4-cylinder engines: 83;
- cars with 6-cylinder engines: 100.
Wheel travel down, mm:
- cars with 4-cylinder engines: 109;
- cars with 6-cylinder engines: 110.
Compression stroke buffer
Length, mm:
- all models except «323i» 95±1.
- «323i «: 85±1.
Outer diameter, mm 60±1.
Shock absorbers
Double-sided hydraulic telescopic shock absorbers with replaceable cylinder.
Shock absorber brand:
- cars with 4-cylinder engines: Fichtel, Sachs or Boge;
- cars with 6-cylinder engines: Boge.
Letter index on the shock absorber hexagon:
- vehicles with 4-cylinder engines: «A» or «With» (Fichtel and Sachs) or «d» (Boge);
- cars with 6-cylinder engines:
- «320»: «f»;
- «323i»: «e».
Shock absorber length with extended rod, mm, no more: 660±3.
The length of the shock absorber with a retracted rod with a stock stroke of 5 mm, not less than: 480.0—472.5.
The volume of engine oil enclosed between the strut body and the shock absorber cylinder, cm3: 3.
Characteristics of front suspension springs
Shock absorber test data
Roll Stabilizer
Stabilizer bar diameter, mm:
- vehicles with 4-cylinder engines, except «320i» And «318i»: 22;
- cars with 6-cylinder engines and «320i» And «318i»: 23;
- cars with reinforced suspension: 23.
Front axle
Front wheel alignment
For a car with a full fuel tank under load, which is distributed at 68 kgf in the front seats plus 68 kgf in the rear seat plus 21 kgf of cargo in the luggage compartment, the wheel alignment must be as follows:
- camber — 0°±30' (for reference)
- convergence - 1.5±0.5 mm
Pivot Angle:
- longitudinal — 8°20'±30' (for reference)
- transverse — 10°54'±30'
Distance between the lower edge of the wheel casing and the edge of the wheel rim, mm:
- under load (see above): 542±8,
- no load: 580±10.
Front wheel hubs
The wheel hub rotates in two tapered roller bearings.
Axial clearance in the hub bearings, mm: >0—0.05.
Permissible end runout of the hub on the installation side of the brake disc (flatness in the area of the bearing seat), mm, not more than: 0.05.
Lubrication amount (Shell Retinax A), laid down:
- in bearings: 50;
- in the hub cap: 20.
Rolling bearings
Tightening torques of the main threaded connections, kgf·m
- Nut for fastening the telescopic strut rod to the upper support: 7.8-8.6.
- Nut of fastening of the top support to a body: 2,2—2,4.
- Rack body nut: 12.0-14.0.
- Nut for attaching ball pins to the front suspension cross member: 6.0-7.0.
- Bolt and nut for fastening the suspension arm to the cross member of the front suspension: 8.1-9.0.
- Nut fastening the front suspension cross member to the engine mount bracket: 4.3-4.8.
- Bolt of fastening of a brake disk to a nave of a wheel: 1st variant of execution: 6,0—6,7; 2nd version (cylinder head bolts 110): 0,4 —0,5.
- Nut for fastening the steering rod to the steering knuckle: 3.5-4.0.
- Wheel bolt: 8.1±9.0.