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post #1 of 7 (permalink) Old 03-26-2019, 03:26 PM Thread Starter
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SLS comment

I installed new SLS struts today. One of my first steps was to bleed the pressure off of the SLS system at the valve by the rear axle. I connected a clear plastic hose to the nipple down to a clean container. I noticed an excessive amount of foam came out of the bleed valve. I finished the installation and had a leak at one of the new copper crush washers at one of the struts. I again bled the pressure off of the SLS system and this time I did NOT have foam. Does anyone know if this foam has any significance?

The second new copper crush wash worked as intended and the leak was resolved. The vehicle rode much smoother with the new struts. I am trying to determine if the foam was a contributing factor to the less then smooth ride before the project.

Thanks in advance for any/all replies.
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post #2 of 7 (permalink) Old 03-26-2019, 03:36 PM
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Hey Tom,

Messy job, Good for you.

Bubbles = Air in system.

"less than smooth"... I think you're correct.

Cheers, man

M.


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post #3 of 7 (permalink) Old 03-26-2019, 05:42 PM
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Also, as you noticed, crush washers must be new and have to be 2000% sure the line isn’t the least but cross threaded on the sls ram when installing. Otherwise you will get a oily leak
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post #4 of 7 (permalink) Old 03-27-2019, 07:06 AM Thread Starter
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Does anyone have experience/comments with the following statement: "I like to remove the linkage from the valve so I can most completely bleed the system. This way with the engine running I can lower the lever arm and fully lower the rear, then raise until the rear rises to it's maximum height. Just a few cycles should fully bleed and everything and restore that amazing ride quality from such a simple system "
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post #5 of 7 (permalink) Old 03-27-2019, 07:52 AM
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In my experience, foam came from ruptured accumulators.
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post #6 of 7 (permalink) Old 03-27-2019, 09:15 AM
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Quote:
Originally Posted by Tom Kaiser View Post
Does anyone have experience/comments with the following statement: "I like to remove the linkage from the valve so I can most completely bleed the system. This way with the engine running I can lower the lever arm and fully lower the rear, then raise until the rear rises to it's maximum height. Just a few cycles should fully bleed and everything and restore that amazing ride quality from such a simple system "
I've done this, Tom. I didn't notice any problems the first time I did it. But the second time, I raised the lever to fill the system then raised the car on the lift I was using. After a few minutes, I saw a drip from the front of the car. The pressure SLS hose was leaking!

This was the day before a long trip. I lowered the car and moved the lever back down and buttoned everything up. I cleaned the hose where it had been leaking between the hose and fitting and went for a test drive. Thankfully no more leak and nothing since then.

So the take away for me was to go ahead and raise and lower the car manually with the lever but don't leave it in the up position for long because the system must create tremendous pressure.
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post #7 of 7 (permalink) Old 03-27-2019, 02:10 PM
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I agree, too much pressure too long will snap that hose (I had to replace mine) and anything holding pressure for excessively long or at higher PSI.


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