Quote:
Originally Posted by Shern
Sorry, this was in relation to removing valve springs to measure against one another. Having just removed the rocker arms, I have a better understanding of how this all works. Taking my time though (no where to go!).
QUOTE=Diesel911;4031339]Not sure I understand the question. When you remove the old Valvestem Seal there is going to be nothing keep the Valve from dropping.
Depending on the condition of your old Valvestem Seals there may be no gripping at all on the Valvestem to keep the valve from falling.
|
[/QUOTE]
To get the valve springs off the valve is going to go down.
People have mentioned the Valve Spring Tester. As mentioned it has a scale on the bottom and you insert the Valve Spring and there is an arm and plunger setup that pushes down on the valve spring and compresses it X amount and at that point you are supposed to have a reading from the scale and that amount has to be within specs.
And there of course is the free length of the spring.
On mine I just changes the valvestem seals and reused the untested valve springs. Been driving after that about 10 years with no obvious issues.
On these Mercedes they differ from most engines in that when you adjust the Nuts to adjust the valves it changes the tension on the valve spring a little