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 ShopForum > Technical Information and Support > Tech Help

Closed Thread
LinkBack Thread Tools Display Modes
Old 10-16-1999, 07:01 PM
Posts: n/a is leaking and I cant find it!

I have a 83 300SD which has suddenly developed a leak. I have pulled the system down to 20" of merc and it will equalize back to 0 in about 2 minutes. I've checked all fittings and hoses with a Robinair freon leak detector, and still can't find the leak. Any suggestions?

Al Wong
83 300SD
Old 10-16-1999, 10:01 PM
Posts: n/a
2 minutes sounds pretty quick, if not an o-ring and there is no obvious leak, did you also go up under the dash above the gas pedal at the expansion valve? Also, the compressor front seal could be leaking, in which case you need to hold the leak tester just below the compressor because the freon ofter disspates beofre the meter can pick it up.

Personal experience: I seldom use my leak detector any more. First I look for the ref. oil on the entire system. If there is a major leak, the oil is there also. I always charge the AC system with dye, that way the small slow leaks are seen with a UV lamp.

Closed Thread


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

Similar Threads
Thread Thread Starter Forum Replies Last Post
Modernizing Old A/C System dokhans Tech Help 6 07-15-2004 07:25 AM
Revamping A/C System and Controls dokhans Vintage Mercedes 2 07-14-2004 01:22 PM
AC Condensor Leak 300SD 300sd2000 Diesel Discussion 3 04-03-2004 04:01 PM
A/C system evacuation pmizell Tech Help 8 03-07-2004 11:24 PM
300sd a/c problem drew3395 Diesel Discussion 1 06-16-2002 11:04 PM

All times are GMT -4. The time now is 02:07 PM.

Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2018, 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