DIY: Rebuild the self leveling suspension SLS valve on w123 300TD wagon sagging rear - PeachParts Mercedes-Benz Forum

Biodiesel300TD · #11 03-25-2009, 11:32 AM

Quote:

Originally Posted by PhilipDiesel

This is from a previous post about the SLS system

To answer the question, the springs are meant to carry the load (support the vehicle weight) with the engine and leveling system off. If the car sags when cold the springs need to be replaced. The leveling system is meant to "augment" the springs under load. If you need (or want) a little more beefy suspension, or if you go to normal shocks you will want to use (HD) springs for a 300SD as they are a bit more heavy duty.

Is this true? Can the springs be adjusted by adjusting the height of the torsion bar if the top coils are visibly compressed?

All these questions! i love it.

-philip

The springs maintain the unloaded ride height. If your rear is low when unloaded and not settling over night and the SLS system is in working order and properly adjusted then your springs are probably tired. You can adjust the SLS system to lift the rear to proper hide height but you are going to have you SLS working overtime. It will always be holding the car up.