Parts Catalog Accessories Catalog Tech Info Tech Forums
  Search our site:    
 Cart  | Project List | Order Status | Help    

Go Back   PeachParts Mercedes ShopForum > Technical Information and Support > Tech Help

LinkBack Thread Tools Display Modes
Old 10-11-2000, 11:31 PM
Posts: n/a
I have a 1979 240 D with 227,000 miles. When either down or up-shifting into 2nd gear there is a grinding sound unless I shift very slowly or double clutch. I am told this is a worn synchro on the 2nd gear. The interesting thing is that this grinding only occurs when the engine is warm. When the car is first started, I can drive several miles shifting normally. I am guessing that when the gearbox oil is cold, the viscosity is thicker and this somehow aids smooth shifting. My question is this: can I replace the gearbox oil with a thicker viscosity so that even when warm, the oil will be thick enough to allow a smooth shift? Any ideas?
Reply With Quote
Old 10-12-2000, 07:58 AM
Registered User
Join Date: Aug 2000
Posts: 82
It probably won't help to change to a thicker oil. If the synchro is bad replacement or double clutching is about the only solution. Double clutching is cheaper.
Reply With Quote
Old 10-12-2000, 09:36 AM
Posts: n/a
Just a note to remind that a worn synchro is a pretty strong indication that the car has been driven by someone that signifcanty moves the shift lever BEFORE the clutch is fully disengaged.

I agree, changing oil will probably change nothing.

Good luck,

Larry Bible
'01 C Class, Six Speed
'84 Euro 240D, 533K miles
'88 300E 5 Speed
'81 300D Daughter's Car
Over 800,000 miles in
Mercedes automobiles
Reply With Quote
Old 10-12-2000, 06:32 PM
Registered User
Join Date: Jan 2000
Location: New Bedford, MA USA
Posts: 1,583
Have this fixed ASAP. If you start losing pieces of the synchro dogs and rings, you will destroy your transmission

Jeff Lawrence
1989 300e
2000 Dodge Grand Caravan SE
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 Off
Trackbacks are On
Pingbacks are On
Refbacks are On

Similar Threads
Thread Thread Starter Forum Replies Last Post
thoughts on worn camshaft gear ???? ivanlee190e Tech Help 0 05-23-2004 09:45 PM
How do I replace the worn out buttons on the push button climate control - E320 71Rcode Tech Help 11 03-19-2004 03:29 PM
rear camber- worn parts? bobjohnston Tech Help 1 12-24-2003 07:23 AM
Excessive rear tires worn out Ed Li Tech Help 13 10-23-2002 03:12 AM

All times are GMT -4. The time now is 10:15 PM.

Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2016, vBulletin Solutions, Inc.
Search Engine Optimization by vBSEO 3.6.0
Copyright 2011 Pelican Parts - Posts may be archived for display on the Peach Parts or Pelican Parts Website -    DMCA Registered Agent Contact Page