This is correct. My wording it kind of poor, I will change it. The pump is always creating pressure, which is just sent back to the reservoir when the car is in the neutral position. When the car is loaded the valve then sends the pressure to the accumulators and struts which expands the struts and causes the rear to lift until it hit the neutral position again.

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Hi:

Rear suspension has been low on my list of priorities. The car's rear has been riding low all along, but drives ok by my standards. I looked in the SLS fluid reservoir the other day and learned it was empty.

When I do fill it, I'm prepared to find some sort of leak. What are the chances that the pump and valve and accumulators are still functional, given that the system has presumably been critically low on fluid for several years?

Thanks in advance for your thoughts!

Cheers,

Brad

Ok so I have an 82 300TD with the SLS and a bad diesel engine.

I bought a sedan engine. I was told that the "power" for the SLS pump comes from the head of the engine.

So how do I fix this problem so I can put the sedan motor in my wagon and still have a working SLS?

Ya I had to do this once... My girlfriend at the time had bad compression so she ordered a used engine... I specifically asked for a wagon engine and they assured me it was one.. got it and it had the wrong head!

If both engines are out of the car and on a stand its not so bad.. the hardest part of the job it timing the injection pump! If you do swap the heads at least you will have a new timing chain and head gasket.. but those parts are not common to replace...

Kinda fun...

Ya I am rebuilding my SLS right now... The previous owner put gas shocks in I am about to diagnose the SLS once all the body welding is finished,,, we are almost done cutting out all the rust and hand forging new metal pieces and welding them in ! It pays to have a blacksmith for a best friend!

I will try to post some pics...

I put new SLS Shocks in and new lines to the accumulators.. the system has been dry for 4 years! I will most likely need accumulators and a pump rebuild... I haven;t seen a listing for a supplier who sells the pump rebuild kits in this thread... Anyone know?

Thanks. wish me luck who knows maybe it will magically work!

Uh, post 4?