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  #1  
Old 06-30-2008, 06:23 PM
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what is this part?

Hello I just bought this 83 300d, it has a hard shift, which I read was a vaccuum leak problem, anyway I opened the hood and see that this plastic part is broken where there used to be a vac line connected. I just cant make out which part it is on the vac diagrams. The little nipple barb that connects the hose has broken maybe I can glue it back on?

I would really apreciate if someone could tell me what this part is and where I can get a new one.
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  #2  
Old 06-30-2008, 06:27 PM
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its a check valve to keep vaccume in the brake booster.
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  #3  
Old 06-30-2008, 07:08 PM
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a hardshift can also be caused by hydraulic pressure in your tranny dropping or your bands your transmission wearing out.
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  #4  
Old 06-30-2008, 08:10 PM
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That is the vacuum pump to brake booster line. The two lines coming off have a particular size orifice. Do not try to repair it, replace it.

http://catalog.worldpac.com/mercedesshop/sophio/quote.jsp?clientid=catalog.mercedesshop&cookieid=2EM1530JE2EM15353F&baseurl=http://catalog.peachparts.com/&partner=mercedesshop&year=1985&product=N4020-44957&application=000295066

Dave
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  #5  
Old 07-01-2008, 02:36 AM
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Quote:
Originally Posted by Oracle12345 View Post
a hardshift can also be caused by hydraulic pressure in your tranny dropping or your bands your transmission wearing out.
True, or by the obvious broken nipple off of the vac line sending the tranny its shifting vacuum.
I guess sun spots could also be causing it, but lets rule out the obvious stuff first.
I'm just sayin'..........


**as usual, Dave has the correct answer above and was nice enough to link the part for you. Pretty helpful guy that Dave......**

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Last edited by JimmyL; 07-01-2008 at 02:44 AM.
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