114/115 chassis vacuum diagram - Mercedes-Benz Forum

 
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post #1 of 5 (permalink) Old 08-21-2005, 10:08 PM Thread Starter
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Date registered: Jun 2005
Vehicle: 72 250 M130 W114
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114/115 chassis vacuum diagram

None of my books have a vacuum diagram for my vehicle. A 72 250. Would someone mind email/fax/website/snailmail... a copy to me?

Thanks

George
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post #2 of 5 (permalink) Old 08-22-2005, 01:15 AM
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RE: 114/115 chassis vacuum diagram

I'm sure there is'nt a diagram for the vacuum lines in a 114 except for this one from the parts catalogue,it's for the doors etc only,there is a slightly smaller one for the second generation aircon.
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post #3 of 5 (permalink) Old 08-22-2005, 07:32 AM Thread Starter
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RE: 114/115 chassis vacuum diagram

Yeam I'm looking for the engine side. Advance, retard, vacuum modulator, break booster ...

I think I have a vacuum leak somewhere. I'm getting 15 HG of vacuum. I replaced the advance, retard, break booster, and plugged the accessories line (I hear a hissing in the cab)

I need to find any further vacuum lines and where the vacuum modulator is located.

Thanks for your help.

George
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post #4 of 5 (permalink) Old 08-24-2005, 02:11 AM
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RE: 114/115 chassis vacuum diagram

Trans vacuum modulator is mounted at the rear end of the trans,depending on what model car you have the rear cross member sometimes conceals it.It's only about 2" diameter but you can't miss it.it has a hose leading into it.If you have the series 2 air con,the vacuum leak may be on the drivers side vacuum canister,it's about midway back from the dash and closes the heater off when the air is turned on .Try fitting a vacuum pump, i use a refrigeration enginners one,to the yelloow line leding into the firewall and listen while it runs,i doubt if a leak in these lines will cause the rough running,if anything the engine will idle TOO HIGH.To find a leak,run the engine ,spray ether engine start aerosol around the intake manifold ,if the engine speed changes you have found your leak.
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post #5 of 5 (permalink) Old 07-20-2010, 01:23 PM
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So, I have a similar problem... need the a/c vacuum diagram for w114 230.6...
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