dj.trippa

Hey guys. I Assume I have a leak in my vacuum hoses for the doors central locking. front doors lock and back left does to, but back right doesn't. it seems when i unlock the doors, the 3 doors unlock but as soon as i start the car straight away and rev it a bit. then it unlocks easy. so i am guessing a slight leak and not enough air to go threw hose to push it up.

does anyone have a 300e 1992 m103 w124 vacuum hose diagram, i can use to check for all leaks in this car. cheers...

optimusprime m1

DJ Do you know how to find the leak, i would check out Kent Bragsna Merceds web site on YOUTUBE this gent will show you how to test for the loss of vacuum in your system.You will need a vacuum testing tool .

dj.trippa

i have not tested it, but tryed blowing on each hose singley and oiling the bars so they move easyer but now when put back together none of the doors lock and unlock. must of pulled a hose out or sumdin, if i blow on the hoses singley from the hose unit under back seat drivers side, they unlock and lock. could that mean its the vacuum unit buggerd?

optimusprime m1

dj did you start your car when you tried it.It may be you have no vacuum in the system. If you remove a tube it will loose the vacumm thats in you tank.

optimusprime m1

DJ You must use Google to find your answer.I have been on there ,put your info in that you want to know like vacuum diagram for your car plus the year.Pages and pages of information.Also on Peach parts web site.

Pauldean

Hi,

How do l ensure it is the actual Front Lock Cylinder leaking and not just the hydraulic hoses or their attachment
to the front cylinder?

Appreciate any help here.

Paul

optimusprime m1

Paul you opened an old post from DJ back in 2015 i think you found this though Google search . Where are you Paul i have a print out on how to test them .

optimusprime m1

Paul i found this to help you . Use Google search and in the search box put this--- Diesel Giant.com Mercedes Vacuum Troubleshooting Basics Good luck Trev