Wheel alignment

Wheel Alignment

http://www.jltechno.com/en/alignment-data-lookup

Tutorials

Load video YouTube YouTube might collect personal data. Privacy Policy ContinueDismiss Four wheel alignment using a laser machine.

Load video YouTube YouTube might collect personal data. Privacy Policy ContinueDismiss MB guide to effective wheel alignment.

DIY toe-in measurement

Trackace DIY laser wheel alignment tracking gauge (~100 EUR) is a cheap, simple and precise measurement tool to measure front wheel's toe-in/toe-out.

According to W220 specifications, the front wheels should have toe in of 0° 15'(± 10').

DIY toe-in measurement using trackace

Trackace toe-in measurement (reads ~25')

Adjust toe at the front axle (FA)

Adjust:

• Switch off easy entry/exit for driver seat and steering wheel. Otherwise the driver seat and steering wheel move into a different position if the driver door is opened or closed for example. The upper frame may be damaged when the holding device (055) is installed. Switching off takes place via the buttons on the steering wheel in the "comfort" menu of the multifunction display.
• Swivel sun visor to one side and fix steering wheel in center position using retainer (055). Carefully mount retainer (055), in order to avoid damaging the steering wheel or the headliner.
• Check center position of steering gear and steering wheel. The steering gear is centered when the marking on the cap is aligned with the mark on the control valve housing. If necessary, shift steering wheel.
• Install wheel spreader (030) at the front in the direction of travel on the inside of the wheel (in the direction of travel). The elastic bearing of the transverse control arm and steering linkage produces a correspondingly large toe value that is reduced to the correct dimension in the ready to-drive condition.
• Counterhold tie rod (10) at the hexagon and loosen jam nut (10f).
• Rotate the tie rods (10) to adjust the toe angle.
• Tighten jam nut (10f)
• Remove retainer (055).
• Remove wheel spreader (030).
• Check bellows for twisting and align if necessary.

Front axle toe check values: 0° 15'(± 10')

Torque spec:

• Lock nut, tie rod to inner tie rod: 60 Nm

055 - Retaining device 055b - Mounting

Shown on model 220 without 4MATIC 10 - Tie rod 10f - Locknut

Shown on model 220 with 4MATIC Arrows - Center position of steering

Shown on model 220 without 4MATIC 030 - Wheel spreader

Adjust toe at the front axle (FA)

Shown on model 220 with AIRMATIC Camber 17 - Spring control arm 19b - Nut 19c - Repair bolt 19d - Shims St+ - Positive camber St- - Negative camber a - Adjusting the spring control arm towards the vehicle center causes a positive camber change b - Adjusting the spring control arm towards the outside of the vehicle causes a negative camber change

Shown on model 220 with AIRMATIC Caster 18 - Torque strut 19b - Nut 19c - Repair bolt 19d - Shims NL - Caster a - Adjusting the strut rod toward the center of the vehicle increases the caster b - Adjusting the torque strut towards the outside of the vehicle reduces the caster

Adjust:

• Install repair bolt (19c). Screw on nut (19b) until it abuts, but do not tighten yet so that the rubber mount of the torque strut (18) or spring control arm (17) can twist when the vehicle is rocked to settle the suspension.
• Recheck vehicle level at front axle after adjusting the camber and caster. The vehicle level must match the dimension established during the initial measurement.
• Tighten nut (19b). The repair bolt (19c) must not turn after fixing. When tightening the nut (19b) counterhold the repair bolt (19c) otherwise the lock tabs in the rubber mount of the torque strut (18) or spring control arm (17) will be sheared off.

Inspection and adjusting values for front-axle camber (Model 220 except 4MATIC):

• Camber at vehicle level +3.7°: -1° 12' ±20'
• Camber at vehicle level +4.2°: -1° 08' ±20'
• Camber at vehicle level +4.7°: -1° 04' ±20'
• Camber at vehicle level +5.2°: -1° 00' ±20'
• Camber at vehicle level +5.7°: -0° 56' ±20'
• Camber at vehicle level +6.2°: -0° 52' ±20'
• Camber at vehicle level +6.7°: -0° 48' ±20'

Permissible difference in front axle camber between right and left sides of the vehicle is 20'.