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 > Tech Help

LinkBack Thread Tools Display Modes
Old 01-06-2004, 11:43 AM
Registered User
Join Date: Oct 1999
Posts: 1,562
'92 300e 2.6 airpump grinding noise?

What generally fails on the airpump that produces an awful bearing grinding noise?

Any MB quality rebuilt units available?


Reply With Quote
Old 01-06-2004, 12:01 PM
G-Benz's Avatar
Razorback Soccer Dad
Join Date: Apr 2001
Location: Dallas/Fort-Worth
Posts: 5,711
The bearings on the pulley shaft themselves... some cases they will seize up causing the pulley to lock up and shred the serpentine belt.

Rebuilt pumps are available from various sources as the bearings themselves are not readily available. This may be more of a deterrent for a DIY'er wanting to rebuild the pump since it is a smog-related component.
2009 ML350 (106K) - Family vehicle
2001 CLK430 Cabriolet (80K) - Wife's car
2005 BMW 645CI (138K) - My daily driver
2016 Mustang (32K) - Daughter's car
Reply With Quote
Old 01-06-2004, 01:40 PM
Registered User
Join Date: Oct 1999
Posts: 1,562
thanks G-Benz for the info!
Reply With Quote
Old 01-06-2004, 05:59 PM
Registered User
Join Date: Jul 2001
Location: SoCal
Posts: 1,303
I don't know if it applies in the MB case, but the typical cause of air pump failure is a bad check valve allowing hot exhaust to backflow into the pump. Replacing those at the same time is good practice.


'91 MB 190E 2.3
'08 RAV4 Ltd 3.5
'83 Lazy Daze m'home 5.7
Reply With Quote


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 11:24 PM.

Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2021, 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