Quote:
Originally Posted by Bio300TDTdriver
OK, more information = different answer. If you need to move the lever on the valve more than a small amount, than it may need to be rebuilt. That was the problem with mine and I replaced it. The valve on the 123 can be rebuilt the 124 cannot, so says MB. I have not had time to take my old valve apart yet to see if I can repair it.
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Roger that. The lever doesn't have to move very far to actuate pressure.
Another test is to see if the back end drops down at all overnight. With no extra load, it should sit where it was when the engine was shut off even a week later.
Internally leaking seals will cause it to drop down in just a few hours.
I have another 123 SLS valve rebuild kit, in case someone needs one send me a PM but be aware they are around $80. In the MB box.