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  #16  
Old 10-31-2003, 12:18 PM
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AA,

You don't need to take the doors apart. You really should invest in the CD or 2 part manual for the 123 chassis. Things like the vacuum system are all laid out. The vacuum system is under group 80.

Peter
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  #17  
Old 10-31-2003, 12:55 PM
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Use can use the search facility here to find a post of mine a couple months ago describing the vacuum system in pretty good detail. Yes, I could find it for you, but it's better if you learn how to use the search for yourself.
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  #18  
Old 10-31-2003, 04:07 PM
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Chances are about 90% that you dislodged a vacuum fitting or broke a vacuum line sometime during the process of working on the hydraulic system. They are very vulnerable under the hood so at first I would just look around at the vacuum lines on the left hand side of the engine and see if you can see one disconnected. It could save you a lot of troubleshooting time. If you were working near vacuum lines when replacing the accumulators, look and see if you dislodged something there.
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  #19  
Old 10-31-2003, 10:53 PM
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There is also a shut-off valve at the ignition which you can pick up at the dealer for $30. I had to replace them both.
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  #20  
Old 11-03-2003, 11:01 AM
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Rick,
I found your write-up on the 240 vacuum system, and along the way I also found lots of other info you've posted - seems like you're mastered in vacuum system! I'll go through that info and see how it goes. Thanks!

AA
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  #21  
Old 12-18-2003, 08:30 PM
Ibe300D
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Ignition switch questions

did you have to get a new key with your new ignition switch, thus having to use 2 keys for the car? Where exactly is it located, how do i remove it? I recently replaced the shut-off valve in the IP and the car still wont shut off, i suspect the ignition switch is leaking vacuum.
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  #22  
Old 12-19-2003, 12:15 AM
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No, you don't need a new key. You take out the instrument panel and the valve is behind the key switch. It's very tight in there, but you replace it the Vacuum Valve At Steering Lock.
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95 E320 Green Wagon 125K, sold
94 E320 White 127K, sold
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84 300D Lapis Blue 170K (Judy), sold
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  #23  
Old 12-19-2003, 12:25 AM
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Make sure you reconnect the two lines in the correct order or you will have vacuum problems. One of those lines has a blue stripe.

Peter
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  #24  
Old 12-30-2003, 12:23 AM
84W123DT
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Question Removal of Shut Off valve in IP

In my 84300DT the Oil Filter housing is in the way, can you re & re the Shut Off valve without removing the IP?
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  #25  
Old 12-30-2003, 01:38 AM
Ibe300D
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sure you can

remove the transmission vacuum modulator, taking care not to break the plastic band that holds the linkage together, and then you have access to the bolts that hold the plate over the shut off valve. you can get to it with the oil filter housing there.
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  #26  
Old 01-07-2004, 03:55 AM
84W123DT
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Quote:
Originally posted by autozen
AA,

...The only sure way is to remove all the air cleaner stuff and be ready to slap a 2x4 on the hole.... Remember a diesel needs to compress air into a tiny space for the injected fuel to burn. If you dlap a board across the air intake, you get injected fuel in the cylinder but no air to cause combustion.
Good luck,
Peter
Peter:

As a precaution in case of a "runaway engine" can I disconnect the fuel line at the Pre-Filter connection hence starving the engine of fuel in the event of a runaway engine. Will this work? Or will there be enough diesel on the line to cause engine damage?
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  #27  
Old 01-07-2004, 04:03 AM
Ibe300D
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There will be enough diesel in the lines to do harm. The best way to do it is to have the air cleaner stuff removed down to the turbo with a board ready. When this happened to me, I used a DVD case and the engine was shut off in less than 5 seconds....scary 5 seconds for sure. definitely cleaned out the system though (not that I recommend this method)
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