UK 1986 560sec Vacuum Diagram

[my560SEC]

Hi Folks
I have a seat locking problem,I can get the seat to lock with a "Mityvac"on the yellow tube but not at the bulkhead.Can anyone help me locate a vacuum circuit diagram,I have a CD workshop manaul but is is for US spec cars.I have tracked the yellow line into the body on the passenger side but cannot find where it goes to.Any advise most appreciated.

Kind Regards Dan Gardner

 

[grober]

This help? item 59 is described as A 001 540 86 97 VALVE
BACKREST LOCKING MECHANISM -----NOT SURE EXACTLY ITS LOCATION SOMEWHERE ON THE ENGINE COMPARTMENT BULKHEAD NO DOUBT?
Here's a pic http://www.ebay.co.uk/itm/MERCEDES-Vacuum-Change-Over-Valve-VSV-001-540-86-97-/370518821162
I assume its activated with the ignition ---thus allowing vacuum to the seats locking them?

 

[my560SEC]

560sec vacuum seat locking

Thanks Grober
I have stripped out all the panels under the dash,I found that the yellow
vacuum lines from the seats go to the doors from there they come out as blue
to the bulkhead ,vacuum will hold at this point and lock the seats,so I must
be getting losses elsewhere in the system.I have been watching Kent Bergsma
on YouTube finding broken vac lines and discovering 80% of all 126 console
gear shifts surrounds are broken,well no surprises there!!
also Has anyone tried these 4 mm push on
nylon hose joiners from pneumatic suppliers? would they perform better than
the rubber ones.



Kind Regards

Dan Gardner 1986 560 SEC Euro

 

[grober]

Without a picture difficult to comment except to say -if they hold vacuum and have the necessary flexibility-why not. The rubber connectors are fine but do degrade with time- this can be an insidious process where narrow cracks or porosity can mean leaks can exist that are sometimes difficult to pick up. A Mityvac Mityvac is your best friend here