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central locking pump

27K views 16 replies 10 participants last post by  anziani  
#1 ·
can any one identify the corresponding function of the vacuum holes ?
 

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#2 ·
ZV = central locking: vacuum & pressure (6 yellow lines)
RH = reversing assist: vacuum & pressure (2 orange lines)
SFG = rectractable boot (trunk) handle: vacuum & pressure (1 black line)
FKS = rear head restraints: vacuum (2 white with blue stripe lines)
PU or P- = manifold vacuum-dependent functions: vacuum (1 transparent line)
PĂś or P+ = orthopaedic back-rest: pressure (3 grey lines)

That's how mine was connected before I replaced it with the later version. Don't know why there are 3 connections for the back-rests.

Mike
 
#10 ·
Dan there is a proper way to pull and push it back in, but since you have already use super glue on it would be too late to reverse the process. Those hoses and plugs are meant for life i mean for a long long life span, and I can assure your car may be dead after several decades those plugs will still be there.
 
#11 ·
Oh guys, i am so interested although i am so ignorant on what is this...

But keep up i am reading and searching and learning.
 
#16 ·
The answer is NO, buttttttttt......If the pump has a leak on +P line you will not get the center vents to work.

Since the picture of that pump on this thread is for 91/92/93 cars, those series of cars have the vacuum wye's in the engine area infront of the computer coffin(on American cars) . You guys with the WRONG steering wheel location.

Lastly, the 91/92/93 cars PSE on those cars has a nice feature for all those hoses. ONE DOES NOT NEED TO REMOVE ALL THE HOSES, but slide out a key to remove the top manifold.

http://www.benzworld.org/forums/w14...g/forums/w140-s-class/2226626-another-pse-connection-question.html#post10891746

If you have a Hella pump, they are prone to more leaks. The BOSCH is the better pump.

Martin
 
#17 ·
Baddar,
There is a vacuum module for each door lock that raises or lowers the lock button (and the locks). It sounds like your rear door vacuum module is shot. I am replacing one of mine next week. Another fix I understand is tye wrapping the module closed but here at least they are relatively cheap and I will go with new ones.
Anziani