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

LinkBack Thread Tools Display Modes
Old 05-26-2002, 12:35 AM
Posts: n/a
300 SEL 6.3 Central Door Locks

The drivers side door lock is very hard to turn. When it does turn the locking system works well.

Is there a way to lubricate or adjust the mechanism to work more easily. I am afraid I am going to break the key off in the lock.
Reply With Quote
Old 05-26-2002, 01:06 AM
Posts: n/a
Have you taken the door panel off yet ?
Also, is the door fully closing and latching ?
If not, then the lock mechanism has to be forced down.
Sometimes this can be fixed with a door-striker alignment.
The sliding 3-way valve could be lubed, once you have the door panel off, double check the operation of all of the levers and look for binding. This is what happened to me, once I got the driverís door working, all of the other door worked great.
Good luck !
Reply With Quote
Old 05-26-2002, 11:04 AM
Senior Member
Join Date: Jun 2001
Location: Northern Calif. (Fairfield Area)
Posts: 2,225
On the 109 series as well as most other MB chassis, the lock assy can easily be removed by opening the door and removing the 1 or 2 screws at the back edge of the door. once the screw or screws are removed, slide the handle towards the front of the car about 10mm and pull it straight out. You may have to tap it a little if it hasn't been out for awhile. You can now spray lube to your hearts content. Don't just concentrate on the handle; spray the latch mechanism inside the door.

Good luck,

PS: Models after 1980 or so require you insert the key in the lock and turn to remove. Antitheft.
Auto Zentral Ltd.
Reply With Quote
Old 05-26-2002, 11:16 AM
Join Date: Mar 2000
Location: Gainesville FL
Posts: 6,844
After you get the door handle off (without removing door panel) as Peter said, you should be able to tell if the resistance comes from the tumbler assy or inside the door at the latch.

The tumbler is relatively easy to diassemble and should be if the resistance is there. When the tumbler has been released from the handle (by removing the actuating lever and the clip, be sure and remove with the key installed. This keeps any free tumblers from springing or falling out (saves having to recode the tumbler on reassembly). In your case if the bind is the tumblers they will probably come out near frozen. each will have to be pried with a pick, out of the body. All should be cleaned, including the body and reassembled with light lubrication.
Steve Brotherton
Continental Imports
Gainesville FL
Bosch Master, ASE Master, L1
33 years MB technician
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 12:13 AM.

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