Technical characteristics of suspension and steering (Mercedes-Benz E-Class W124)

Front suspension

Type	Independent with coil springs, telescopic shock absorbers and anti-roll bar

Rear suspension

Type	Independent with coil springs, telescopic shock absorbers and, on most models, an anti-roll bar

Steering

Type	With power steering and shock absorber on the steering gear

Wheel alignment angles

Front wheels:
- collapse:
• Station wagon models	–0° 5'
• other models	–0° 25'
– longitudinal tilt angle of the rotation axis:
• left side	10°
• right side	11°
- convergence	0° 20'
Rear wheels:
- collapse	1° 30'
- convergence	0° 25'
Wheel rim size	6J x 15, 6.5J x 15 or 7J x 15

Tires

Wheel rim size 6J x 15	185/65 R 15
Wheel rim size 6.5J x 15	195/65 R 15
Wheel rim size 7J x 15	205/60 R 15

Tightening moments

*Front suspension*
Anti-roll bar:
- stabilizer earring	20 Nm
- stabilizer mounting clamp	60 Nm
Bolt for fixing the hub mounting nut	12 Nm
Lower arm:
- nut of the clamping bolt of the ball joint pin	125 Nm
- hinge bolt nut	120 Nm
Shock absorber:
- upper mount to the body	20 Nm
- mounting bolts to the steering knuckle	110 Nm
- plate fastening nut	60 Nm
Steering knuckle:
- shock absorber mounting bolts	110 Nm
– steering arm mounting bolts	80 Nm
*Rear suspension*
Anti-roll bar:
- stabilizer mounting clamp	20 Nm
– stabilizer earring:
• top nut	30 Nm
• lower nut	20 Nm
Steering Levers:
– hinge bolt nut:
• nut M10	45 Nm
• nut M12	70 Nm
- lower rear arm ball joint nut	35 Nm
Lower arm:
- internal hinge bolt	70 Nm
- external hinge bolt	120 Nm
Self-leveling rear suspension components:
– pressure accumulator:
• connecting bolt M16	30 Nm
• union nut	14 Nm
• mounting nuts	20 nm
Level control unit:
– connecting nuts:
• M10 nuts	14 Nm
• M12 nuts	20 Nm
- connecting rod nut	11 Nm
- mounting bolts	10 Nm
Hydraulic pump on models with 4-cylinder petrol engines and diesel engines without turbocharging:
- mounting bolts	11 Nm
- connecting bolt	25 Nm
- connecting nut	15 Nm
Shock absorber:
– models with self-leveling rear suspension:
• top mounting bolt	25 Nm
• lower mounting nut	60 Nm
– other models:
• upper mounting nut	15 Nm
• upper mounting lock nut	30 Nm
• lower mounting bolt nut	60 Nm
*Steering*
Central steering rod ball joint nut	35 Nm
Steering knuckle clamp bolt	55 nm
Intermediate arm hinge bolt	100 Nm
Power steering pump:
- mounting bolts	25 Nm
- pulley mounting bolts	30 Nm
Rubber coupling mounting bolts	25 Nm
Steering gear mounting bolts	70 – 80 Nm
Steering column mounting bolts and nuts	20 Nm
Steering shock absorber mounting bolt nuts	40 Nm
Steering wheel mounting bolt	8 Nm
Transverse steering rod:
- ball joint mounting nut	35 Nm
- inner ball joint clamp bolt	20 Nm
- outer ball joint clamping sleeve	50 Nm