Can anyone tell me about the check valve? I removed it from the booster and it just seems to be a wide open 90* fitting with no 'valve' at all. Is this how it's set up with this model? I'm no diesel expert and any help would be appreciated as I can't find any info anywhere else. I do know that the booster is not working. Thanks for any help.

 

Hi, if you can see on this site if you need a Mercedes Diesel manual.
Luck!

 

Thank you, peterch. I will check it out. I have 2 manuals, but they're kind of vague.