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 12-01-2003, 05:48 PM
Registered User
 
Join Date: Jan 2003
Location: Gastonia, NC
Posts: 1,354
Please explain this to me...

What is the difference between the "old style vacuum pump" and the "new style vacuum pump"? Anyone have any pictures of the two?

Kevin

Reply With Quote
  #2  
Old 12-01-2003, 11:18 PM
gsxr's Avatar
Unbanned...?
 
Join Date: Aug 2001
Location: USA
Posts: 8,101
If you are referring to the OM60x aluminum-head engines used on all 1986 and newer MB diesels, the new style pump has a much more robust bearing assembly, and a cover that is crimped AND screwed on. Here's a photo of the new style. See those four Torx head screws on the front? If those are missing, that's an old style pump that should be changed immediately, regardless of age or miles.



(image may be slow to load - currently have server problems - sorry!)

__________________
Dave
Boise, ID

Check out my website photos, documents, and movies!
Reply With Quote
  #3  
Old 12-01-2003, 11:24 PM
Registered User
 
Join Date: Jan 2003
Location: Gastonia, NC
Posts: 1,354
I should have been more specific, sorry!

I guess I should have asked if there is a "newer" and "older" style vacuum pump for the w123 chasis diesels. I knew what I was talking about so I figured everybody knew. I get caught up in my own little world sometimes .

Kevin
Reply With Quote
  #4  
Old 12-01-2003, 11:37 PM
gsxr's Avatar
Unbanned...?
 
Join Date: Aug 2001
Location: USA
Posts: 8,101
Ah! For OM61x engines, there are three different pump versions that I know of. But I'm not sure how to tell them apart. Guess you'll have to wait for someone to reply who's familiar with them...
__________________
Dave
Boise, ID

Check out my website photos, documents, and movies!
Reply With Quote
  #5  
Old 12-02-2003, 12:10 AM
Registered User
 
Join Date: Jan 2002
Posts: 18,350
I believe the early pump is a diaphragm pump and the later a piston pump. You can tell the difference by the fact that with the early pump there is a clear hose going from the pump to the air cleaner. The later pump has no hose going to the air cleaner.
__________________
1977 300d 70k--sold 08
1985 300TD 185k+
1984 307d 126k--sold 8/03
1985 409d 65k--sold 06
1984 300SD 315k--daughter's car
1979 300SD 122k--sold 2/11
1999 Fuso FG Expedition Camper
1993 GMC Sierra 6.5 TD 4x4
1982 Bluebird Wanderlodge CAT 3208--Sold 2/13
Reply With Quote
  #6  
Old 12-02-2003, 01:25 AM
Registered User
 
Join Date: Jan 2003
Location: Gastonia, NC
Posts: 1,354
Tell me this,

Can I use the piston type pump('82 240D) on a 1980 300D with the "clear hose into air cleaner" instead? How would that work? Okay?

Kevin

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 06:45 AM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2024, vBulletin Solutions, Inc.
Search Engine Optimization by vBSEO 3.6.0
Copyright 2018 Pelican Parts, LLC - Posts may be archived for display on the Peach Parts or Pelican Parts Website -    DMCA Registered Agent Contact Page