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 > Diesel Discussion

LinkBack Thread Tools Display Modes
Old 11-30-2000, 01:03 PM
Leon Hernandez
Posts: n/a
Hey gang, nice upgrade Donnie!
I'm in the process of selling my 300SD (gulp) and found the door locks will not operate correctly. The driver door will go close then reopen. Here's what I've discovered so far. The trunk mounted vacuum pump will operate when the door tumbler is operated in the open and/or the close position. So I tried to check the vacuum pump and it pumps 9 psi when unlocking and 15" when locking. So when I try to lock the doors the driver plunger goes down, the rear plungers do not move and I hear the trunk and fuel cap actuate, then the plunger will open back up immediately. I noticed with the vacuum hose off the pump it will stay running, as soon as I place the hose or a finger tip over the pump it shuts right down. Hope this is enough detail for someone's expertise get me pointed in the right direction. Thanks, does not begin to cover the appreciation I have for this site! LH
HOT DOG a spell checker! he he it recommended I change the 300SD to "g-string" trust me that would be an ugly sight! he he, couldn't help it!

Reply With Quote
Old 11-30-2000, 06:06 PM
Leon Hernandez
Posts: n/a
Door locks question

Just got another look, the two front doors respond to the downward motion and the trunk also, the rear doors don't respond by the first 1-2 seconds the front door pins lift into the open position. Manually locked all four doors and used the key on the driver side to unlock, the pump appears to have no problem popping open all four door pins. The vacuum side though is another question because it appears that any 'load' and it shuts down immediately. Your thoughts appreciated, thanks LH
Reply With Quote
Old 11-30-2000, 08:23 PM
Registered User
Join Date: Mar 1999
Location: Suwanee, GA, USA
Posts: 4,712
Most likely, you have a leak that is open in the lock position. The pump has a switch that tells it to shut down at a specified range. If you put your finger on it, it should shut right down.

(Bill did all of the programming on the site, and I will say he did a helllllllllll of a good job!)

Donnie Drummonds
Reply With Quote
Old 11-30-2000, 09:42 PM
Leon Hernandez
Posts: n/a
That's exactly what it doing. Now the silly part, where to start? Take all the door panels off? Thanks for the help.LH

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

Similar Threads
Thread Thread Starter Forum Replies Last Post
rear glass 300SD shadetree77 Diesel Discussion 3 08-15-2003 01:49 AM
W116 300SD and W126 300SD comparison? ericnguyen Diesel Discussion 11 07-11-2003 01:11 AM
82 300sd trans in 79 300sd diesellieber Diesel Discussion 0 06-26-2003 09:55 PM
Desperately Seeking a 300SD!! diesellady Diesel Discussion 14 08-28-2002 01:19 PM

All times are GMT -4. The time now is 09:52 AM.

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