PeachParts Mercedes-Benz Forum - View Single Post - W124 Climate Control Vacuum Valve Repair DIY

Jeremy5848 · #11 07-27-2010, 10:58 PM

Quote:

Originally Posted by fullcircle

Thank you for this thread and your work, Jeremy. I have intermittent center vents on my '87 and was certain I needed to pull the dash to replace a bad vacuum pod--a job I dread for some reason. At the very least you have given me some hope that the repair may be more easily accessible.

Thanks again.

If it turns out to be the vacuum pod (and while you have the glove box out), consider reaching up into the rubber boot that connects the center vents to the climate control box and jamming that door open. I did that on my '87 and it worked that way for over a year. Because the vacuum pod was bad (leaking) I also removed that vacuum line at the solenoid block and put a cap over the outlet (I think it's #4).

When I later replaced the dash, I also replaced most of the pods but tee'd the center one into the solenoid input line so it sees vacuum all the time. Thus I have center vent heat and if I ever want to put the system back to stock, all I have to do is reroute a couple of vacuum lines, working through the glove box opening.

Dash replacement is much easier the second time. If you have access to a DIY junkyard, go practice there. Print out and take along one of the good DIY threads from this forum (Sixto's is one of the best) and have at it. When you later do your own you'll be much more confident and less likely to make a serious mistake.

Jeremy