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W116 (1972-1980, petrol) W126 (1979-1991, petrol) W140 (1991-1998) W220 (1998-2005)
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  • W126 (1979-1991)
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  • Front Coil Springs — Removal and Installation

Front Coil Springs — Removal and Installation (Mercedes-Benz S-Class W126)

0
Contents: Removal ↡ Installation ↡
Note: Different models may have different coil springs with their own rubber mounts. The spring type is indicated by a red or blue stripe on its last coil, as well as a number stamped on it. When replacing springs, make sure that the new ones always have the same markings as the old ones.


Removal



With the vehicle parked on a level surface, remove the upper shock absorber mount.

Loosen the wheel bolts, support the front end with stands and remove the front wheel.

Loosen the wheel bolts, support the front end with stands and remove the front wheel.


Install the spring puller so that it covers 9 of its turns. If a puller with pressure plates (01b/01c) is used, before installing it, it is necessary to turn the plates by 90° and check that they securely grip the spring. It should be remembered that significant force is required to compress the spring. It is not allowed to compress the spring from only one side, as this may lead to its breakage.

Install the spring puller so that it covers 9 of its turns. If a puller with pressure plates…


Carefully raise the lower control arm with a jack to facilitate the spring compression process.



Carefully raise the lower control arm with a jack to facilitate the spring compression process.


Lower the control lever slightly and pull the compressed spring together with the rubber cup towards you.

Turn the rubber cup to the left and remove it. Place the compressed spring between the jaws of the vice and slowly release the pressure applied to it.

Installation



Before installing the spring, check the rubber cup for porosity and damage and replace it if necessary. Clean the contact surface of the control lever.

Before installing the spring, check the rubber cup for porosity and damage and replace it if…


Check if the drain hole is clogged (see arrow) in the spring plate and clean it if necessary.

Place the spring puller on the spring and slowly compress it.

Place the spring puller on the spring and slowly compress it.


Place the rubber cup on the spring, turning it to the right (the direction is shown by the arrow). Install the spring in place so that the end of the lower coil "sits" in the recess in the spring plate.



Raise the control lever slightly with a jack, install the shock absorber in place and tighten its fasteners.

Slowly release the pressure from the spring, making sure the rubber cup is seated correctly on the frame and control arm.

Replace the front wheel, lower the vehicle and tighten the wheel bolts in a diagonal pattern.

Check the horizontal position of the front of the car.

Check the headlight beam adjustment.
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S-Class W126 / Front suspension
Next ▶

Checking the shock absorber
Front shock absorber — removal and installation
Description of the front suspension design
Removal, installation and checking front wheel bearings
Adjusting the axial clearance of wheel bearings
Front and rear suspension specifications
Tightening torques for threaded connections
Front suspension — design description
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