W128 Replacing Points - Mercedes-Benz Forum

 
LinkBack Thread Tools Display Modes
post #1 of 6 (permalink) Old 10-15-2016, 12:25 PM Thread Starter
BenzWorld Member
 
Date registered: Aug 2009
Vehicle: 2007 SL550, 1996 E300 Diesel, 1959 220SE, 1965 Unimog 404.115-Sold
Location: Oakdale, California
Posts: 292
Mentioned: 1 Post(s)
Quoted: 8 Post(s)
(Thread Starter)
W128 Replacing Points

I recently purchased a W128 1959 220SE with fuel injection. The car starts up fine but has a miss and you can smell it is running very rich. I removed all the spark plus to check their condition and found all of them to be wet and black from fuel. The electrodes did not appear to be worn but the gap was very small like .020, so I cleaned them and reset the gap to .028 and then checked the points. The points have a big burn mark on them so I filed them and set the gap and the car runs better but still not good. I have new points being delivered Monday with a new condenser. While cleaning the points I noticed they are some how attached to a shaft in the distributor but I do not see how they are held to the shaft. There is no clip that I can see. I am attaching a pic. Does anyone know how to remove the points on this model? Thanks
Well I am not able to attach the photo for some unknown reason. I will keep trying
Attached Thumbnails
Click image for larger version

Name:	Points.jpg
Views:	17
Size:	63.9 KB
ID:	1997241  

2007 SL550
1996 E300 Diesel
1965 Unimog 404.115

Last edited by compconsult; 10-15-2016 at 12:27 PM. Reason: photo did not upload
compconsult is offline  
Sponsored Links
Advertisement
 
post #2 of 6 (permalink) Old 10-15-2016, 02:13 PM
BenzWorld Junior Member
 
nostat's Avatar
 
Date registered: Nov 2015
Vehicle: 1974 450SEL
Location: Wisconsin
Posts: 6
Mentioned: 0 Post(s)
Quoted: 0 Post(s)
Quote:
Originally Posted by compconsult View Post
I recently purchased a W128 1959 220SE with fuel injection. The car starts up fine but has a miss and you can smell it is running very rich. I removed all the spark plus to check their condition and found all of them to be wet and black from fuel. The electrodes did not appear to be worn but the gap was very small like .020, so I cleaned them and reset the gap to .028 and then checked the points. The points have a big burn mark on them so I filed them and set the gap and the car runs better but still not good. I have new points being delivered Monday with a new condenser. While cleaning the points I noticed they are some how attached to a shaft in the distributor but I do not see how they are held to the shaft. There is no clip that I can see. I am attaching a pic. Does anyone know how to remove the points on this model? Thanks
Well I am not able to attach the photo for some unknown reason. I will keep trying
There should be a screw on the points under the condenser wire remove and lift points straight up. There is a pin that holds the points in place on the back.
nostat is offline  
post #3 of 6 (permalink) Old 10-15-2016, 04:00 PM Thread Starter
BenzWorld Member
 
Date registered: Aug 2009
Vehicle: 2007 SL550, 1996 E300 Diesel, 1959 220SE, 1965 Unimog 404.115-Sold
Location: Oakdale, California
Posts: 292
Mentioned: 1 Post(s)
Quoted: 8 Post(s)
(Thread Starter)
I already removed the screw holding it to the breaker plate. That did not release the points. They are somehow attached to the shaft that the hole in the spring loaded part goes over the shaft. I have replaced hundreds of sets of points on domestic cars and none are like this set.

2007 SL550
1996 E300 Diesel
1965 Unimog 404.115
compconsult is offline  
post #4 of 6 (permalink) Old 10-18-2016, 06:37 AM
w108,107 Parts Hoarder
 
Fonzi's Avatar
 
Date registered: Jun 2010
Vehicle: 4Keep:450slc5.0cab 280sl5sp 280se4.5 500seAMG 2sell:500sl92 380se83 300se86 350sl4sp 75slc MorInSig
Location: Philadelphia Area
Posts: 18,777
Mentioned: 27 Post(s)
Quoted: 1625 Post(s)
Lifetime Premium Member
Garage
I e never had this model, but later models have the pin that seats into the backer plate. That is an axis of rotation I believe. The screw will hold it in place and position.

Will the points twist now that you have removed the screw? Or do they still feel fixed in place?

.

My signature:
Click for list of my 32 MB since 2010. If, you want 70's-80's Mercedes tuner wheels, let me know.
Fonzi is offline  
post #5 of 6 (permalink) Old 10-18-2016, 03:47 PM Thread Starter
BenzWorld Member
 
Date registered: Aug 2009
Vehicle: 2007 SL550, 1996 E300 Diesel, 1959 220SE, 1965 Unimog 404.115-Sold
Location: Oakdale, California
Posts: 292
Mentioned: 1 Post(s)
Quoted: 8 Post(s)
(Thread Starter)
Quote:
Originally Posted by Fonzi View Post
I e never had this model, but later models have the pin that seats into the backer plate. That is an axis of rotation I believe. The screw will hold it in place and position.

Will the points twist now that you have removed the screw? Or do they still feel fixed in place?
The points are free to move with the screw removed but you cannot remove the points. It seems like something is still attached to the breaker plate. There is a groove in the shaft for a clip to retain the points but the groove does not have anything in it. It seems to me that there must be something else holding the points in place as having just 1 screw does not seem like it would hold them in place well enough. I may have to remove the distributor to find what is holding them.

2007 SL550
1996 E300 Diesel
1965 Unimog 404.115
compconsult is offline  
post #6 of 6 (permalink) Old 10-21-2016, 11:01 AM Thread Starter
BenzWorld Member
 
Date registered: Aug 2009
Vehicle: 2007 SL550, 1996 E300 Diesel, 1959 220SE, 1965 Unimog 404.115-Sold
Location: Oakdale, California
Posts: 292
Mentioned: 1 Post(s)
Quoted: 8 Post(s)
(Thread Starter)
Well I feel kind of dumb about this issue. After receiving the new points and saw that they are a 2 piece setup what was holding the points to the breaker plate was oil. After pulling very hard on the points they finally broke free. Both contacts had very large burn marks on them and the wire was frayed. The condenser looks to be the original also. Next I need to adjust the timing and see how it runs.
rumb likes this.

2007 SL550
1996 E300 Diesel
1965 Unimog 404.115
compconsult is offline  
Sponsored Links
Advertisement
 
Reply

  Mercedes-Benz Forum > General Mercedes-Benz Forums > Vintage Mercedes-Benz

Quick Reply
Message:
Options

Register Now



In order to be able to post messages on the Mercedes-Benz Forum forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.

Password:


Confirm Password:
Email Address
Please enter a valid email address for yourself.

Email Address:
OR

Log-in











  • Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
     
    Thread Tools
    Show Printable Version Show Printable Version
    Email this Page Email this Page
    Display Modes
    Linear Mode Linear Mode



    Posting Rules  
    You may post new threads
    You may 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

     

    Title goes here

    close
    video goes here
    description goes here. Read Full Story
    For the best viewing experience please update your browser to Google Chrome