W123 Vacuum Locking

[Mark Zygadlo]

I have an '84 230 CE running project with several issues.
The vacuum central-locking hoses have been disconnected and removed from the engine and I cannot see where they would have been connected. All that's left are the junction boxes and the the hoses that emerge through the bulkhead into the engine bay. Does anyone know where I can get a schematic plan of the whole system?
The hoses which lock the front seats in position when the doors are closed were still present and I have got these working again after reconnecting them under the seats.
Sucking and blowing through the tubes seems an unreliable and inefficient way the test if they are airtight. Has anyone any useful tips on repairing this system?
Thanks.
Mark.

 

[jaymanek]

its a very simple system Mark.

There should be a one way valve just after the pipes come out of the bulk head. This should be connected to the manifold and the rest is just a load of junctions to each door, boot lid and petrol flap..

If there is a leak it is usually one of the door actuators or the one for the boot lock.

 

[Mark Zygadlo]

Dear Jaymanek,
Thanks for your reply and sorry for the delay in responding. This is what confuses me and without a plan of what should be there it's difficult to know what could be missing.
There is a one vacuum tube from the rear of the manifold to a white plastic valve at the bulkhead. From that two blue tubes go to the front seat locking devices. They work ok now.
But, there are two other plastic valves at the bulkhead with colour coded tubes going through to the doors etc. but they are not connected to the manifold, there seems to be nowhere to make the connection but there are empty connectors at the valves.
Any clues?

 

[jaymanek]

Well they will fit on the manifold somewhere.. best just to use a Y spliiter and piggy back off the one for the seats...