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 04-09-2001, 10:50 PM
Registered User
Join Date: May 1999
Location: Calgary, Alberta, Canada
Posts: 190
My 1988 300E has a leak that is quite possibly from the tranny pan gasket. I had the tranny out to replace the front pump seals, and at that time I removed the pan to replace the filter. I had just put the used tranny in about a week before and found that there was a leak around the front pump. I also noticed that there was a leak near the rear of the transmission. I checked the gasket which was brandnew when I replaced the tranny and it looked perfect. I finished putting it all back together and it is still leaking. How can I find out exactly where it is coming from? Also, if the pan gasket looks fine, how could it leak? Is it possible that the pan is bent and not sealing even though it looks perfect? Sorry about all the questions. BTW I don't know what I would do without this site.
Reply With Quote
Old 04-09-2001, 11:45 PM
Registered User
Join Date: Apr 2000
Posts: 412
Sometimes the pans get bent or warped, from road debris or improper torque of the pan bolts. Clean the trans thoroughly and see if you can see where the leak is without driving it. The trans oil gets blown toward the rear of the trans. If it has been determined that the pans is leaking, check sealing surface of the pan with a straightedge to see if its the pan. Also check the sealing surface on the trans itself. Good luck.
1990 190E 2.6
1996 Grand Voyager 3.3
1985 Mustang GT 5.0 5 SPD
1982 Suzuki GS 750T
Reply With Quote
Old 04-10-2001, 01:50 AM
MikeTangas's Avatar
Senior Member
Join Date: Apr 2000
Location: So. Cal
Posts: 4,430
Don't know if this applies to yours or not...

On mine the pan was leaking. When I did the filter change I discovered that there were three short bolts and one long bolt, each with a set of "wings" to spread the pressure evenly. When I pulled the bolts, I notice the left rear bolt had the "wing" caddywompus across the corner lips instead of flush against the pan. The last person to change the filter didn't pay attention to where the bolts came from and obviously couldn't get one to tighten down so he improvised. On mine the long bolt goes at the right front corner.

Being bolted in incorrectly, plus the seal being pinched at that corner, was causing a small, but messy leak.
Mike Tangas
'73 280SEL 4.5 (9/72)- RIP
Only 8,173 units built from 5/71 thru 11/72

'02 CLK320 Cabriolet - wifey's mid-life crisis

2012 VW Jetta Sportwagon least its a diesel

Non illegitemae carborundum.
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
Oil Leak - Valve Cover Gasket is suspect 84W123DT Diesel Discussion 5 01-19-2004 12:30 PM
117 head gasket oil leak delucat2 Tech Help 0 12-04-2003 05:16 PM
Fixed Transmission Leak... tabo ML, GL, G-Wagen, R-Class, Unimog, Sprinter 3 01-30-2003 06:42 AM
Oil Pan Replacement on a 79 300 CD JPL Diesel Discussion 1 07-11-2001 07:56 AM
Oil Pan Replacement on a 79 300 CD JPL Tech Help 2 07-10-2001 03:50 PM

All times are GMT -4. The time now is 04:15 AM.

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