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 > Mercedes-Benz SL Discussion Forum

Reply
 
LinkBack Thread Tools Display Modes
  #1  
Old 11-21-2009, 05:50 PM
Registered User
 
Join Date: Nov 2009
Posts: 21
Vacuum Help

I have a 1981 380sl, on the vacuum diagram it says "air pump" what is this air pump reffering to, and where is it? Is it talking about the A/C compressor?
Reply With Quote
  #2  
Old 11-21-2009, 06:34 PM
rowdie's Avatar
Registered User
 
Join Date: Nov 2008
Location: NE Oklahoma
Posts: 1,416
It is probably below the alternator. It is belt driven. Part of the pollution control system. It pumps oxygen into the exhaust to reduce O2 emmissions.
Reply With Quote
  #3  
Old 11-22-2009, 03:11 AM
coleyjf's Avatar
Old dog - new tricks
 
Join Date: May 2005
Location: East Midlands of the UK
Posts: 264
couldn't it be the electric Vacuum air pump in the boot (trunk) which operates the central locking system?

Jim
__________________
Keep your Motor runnin'

Jim's '88 300SL
Reply With Quote
  #4  
Old 11-22-2009, 09:48 AM
rowdie's Avatar
Registered User
 
Join Date: Nov 2008
Location: NE Oklahoma
Posts: 1,416
I don't think the 12v vacuum pump was used until 1986. Epc shows the reserve tank under the rf fender on the 380.
Reply With Quote
  #5  
Old 11-23-2009, 06:20 PM
rockcrusher's Avatar
Registered User
 
Join Date: Sep 2008
Location: Northeastern Michigan, by the big lake
Posts: 31
It would be located below the alternator, and belt driven. Do you have a grey market vehicle, If so, like mine, it's not there, either is the frequency vale, bypass valve to mention a few. At least that what I have found
Reply With Quote
  #6  
Old 11-26-2009, 11:56 AM
Registered User
 
Join Date: Nov 2009
Posts: 21
What do you mean grey market vehicle?
Reply With Quote
  #7  
Old 11-26-2009, 12:48 PM
rowdie's Avatar
Registered User
 
Join Date: Nov 2008
Location: NE Oklahoma
Posts: 1,416
A vehicle that was not produced to US Standards and then imported to the US. Some legally, IE brought up to all US standards. Bumpers, headlights, cats, side door reinforcement etc.. They were done to varying degrees by the importer. The following are 107 models that can be found in the US but are all grey market.
280SL, 300SL, 420SL and 500SL.
Some, like the 380SL were made for most markets so a 380SL can be a US version or a grey market.
I have an '81 280SL that has no US updates. I have an '84 500SL that had an AIR pump and cats. It was imported into Texas and modified there.

The euro versions are more desirable to some than the US because they generally have higher compression and HP. Some also have the manual trans.
Reply With Quote
  #8  
Old 11-26-2009, 01:18 PM
Graham's Avatar
Registered User
 
Join Date: Nov 2004
Location: Ontario, Canada
Posts: 3,461
Cool

Quote:
Originally Posted by rowdie View Post
A vehicle that was not produced to US Standards and then imported to the US. Some legally, IE brought up to all US standards. Bumpers, headlights, cats, side door reinforcement etc.. They were done to varying degrees by the importer. The following are 107 models that can be found in the US but are all grey market.
280SL, 300SL, 420SL and 500SL.
Some, like the 380SL were made for most markets so a 380SL can be a US version or a grey market.
I have an '81 280SL that has no US updates. I have an '84 500SL that had an AIR pump and cats. It was imported into Texas and modified there.

The euro versions are more desirable to some than the US because they generally have higher compression and HP. Some also have the manual trans.

Wow - I thought the air pump was for pumping the tires up!
__________________
Graham
85 300D,72 350SL, 98 E320, Outback 2.5
Reply With Quote
  #9  
Old 11-26-2009, 01:37 PM
rowdie's Avatar
Registered User
 
Join Date: Nov 2008
Location: NE Oklahoma
Posts: 1,416
I never thought of that. I could have sweated a valve into the pump line in case of a flat. Shucks, I already removed the pump.
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 04:39 PM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2019, 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