Parts Catalog Accessories Catalog How To Articles Tech Forums
Call Pelican Parts at 888-280-7799
Shopping Cart Cart | Project List | Order Status | Help



Go Back   PeachParts Mercedes-Benz Forum > Mercedes-Benz Tech Information and Support > Diesel Discussion

Reply
 
LinkBack Thread Tools Display Modes
  #1  
Old 10-20-2007, 05:34 PM
CAJUN COUNTRY
 
Join Date: Jun 2006
Location: CAJUN COUNTRY LOUISIANA
Posts: 552
what is the purpose for a 3/2 vac valve on a man trans 240d

I know why it is there on my auto trans 300d's, to smoothen out the shifts. But why on a manual transmission. I changed the trans vac valve leaver then thought ,why on a manual trans. Can it be eliminated. then plug the series of vacuum lines that lead to the thermo vacuum valve, switchover valve,and EGR valve. Can i just plug the line to the series i mentioned and leave the 3/2 vacuum valve. A lot of questions to have on one thread. Thanks RAY M

Reply With Quote
  #2  
Old 10-20-2007, 07:49 PM
CAJUN COUNTRY
 
Join Date: Jun 2006
Location: CAJUN COUNTRY LOUISIANA
Posts: 552
I routed the vac lines that went to, then from the 3/2 vac valve on top of the valve cover. I connected them directly to each other. Well the engine wouldn't shut off until I reconnected them. Thats the only affect I could see. Perhaps a little more pep.
I still don't understand why the need for it on a manual trans. RAY M
Reply With Quote
  #3  
Old 10-20-2007, 08:47 PM
Stevo's Avatar
Registered User
 
Join Date: Apr 2002
Location: NW WA
Posts: 6,299
I cant think of any reason there would be a vacuum line going to a manual tranny.
__________________


1985 Euro 240D 5 spd 140K
1979 240D 5 spd, 40K on engine rebuild
1994 Dodge/Cummins, 5 spd, 121K
1964 Allice Chalmers D15 tractor
2014 Kubota L3800 tractor
1964 VW bug

"Lifes too short to drive a boring car"
Reply With Quote
  #4  
Old 10-21-2007, 05:45 AM
ForcedInduction
Guest
 
Posts: n/a
Quote:
Originally Posted by ray m View Post
I know why it is there on my auto trans 300d's, to smoothen out the shifts
The 300D's only use them for the EGR valve.
Reply With Quote
  #5  
Old 10-21-2007, 06:21 AM
toomany MBZ's Avatar
Registered User
 
Join Date: Nov 2006
Location: central Va
Posts: 7,820
Quote:
Originally Posted by Stevo View Post
I cant think of any reason there would be a vacuum line going to a manual tranny.
Agreed, a trans swap in it's previous life? I'll agree with forced too, egr related, should be able to plug all, do any line go to or near the main vac pump line?the
__________________
83 SD

84 CD
Reply With Quote
  #6  
Old 11-19-2007, 07:24 PM
Registered User
 
Join Date: Oct 2004
Location: McAllen, TX
Posts: 369
I was about to post the same question then found this thread. I just bought a 240d that is a factory manual car and it has the valves on the valve cover and the vacuum modulator for the transmission on the IP along with the EGR, thermovalve, etc. I need to find a vac diag to hook all of this stuff proprely.

Reply With Quote
Reply

Bookmarks

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is On
Trackbacks are On
Pingbacks are On
Refbacks are On




All times are GMT -4. The time now is 12:44 AM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2024, vBulletin Solutions, Inc.
Search Engine Optimization by vBSEO 3.6.0
Copyright 2024 Pelican Parts, LLC - Posts may be archived for display on the Peach Parts or Pelican Parts Website -    DMCA Registered Agent Contact Page