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

Reply
 
LinkBack Thread Tools Display Modes
  #1  
Old 03-21-2003, 08:36 AM
Registered User
 
Join Date: Mar 2003
Posts: 173
coverting electrical speedo to mechanical?

Hi, I am using motor/tranny out of a 83 SD and its been installed in a 4x4 truck. It has the electronic speedo connection in the tailshaft. Does anyone know if I can simply swap the speedo piece out to one from a MB that had a mechanical speedo(cable driven)? Also what type/year MB would I need to look at?
Also on the side of the tranny where the shift lever attaches is a wiring harness. I figure some wires must be a neutral start switch and reverse lights. Am I on the right track? Any help would be appreciated. Mike
Reply With Quote
  #2  
Old 03-21-2003, 03:00 PM
sixto's Avatar
smoke gets in your eyes
 
Join Date: Jun 2000
Location: SF Bay Area
Posts: 20,436
Mike,

Try the tail housing from a 722.315 (123 300t) or 722.309 (123 280). It should fit the SD transmission and give you a gear drive. I don't know if you can move the gear drive parts over. The tail housing has to come off to get to the parts.

You got it right on the adjustable electronics box on the side.

Sixto
91 300SE
87 300SDL
83 300SD
Reply With Quote
  #3  
Old 03-23-2003, 09:13 PM
Mark Tamburrino
Guest
 
Posts: n/a
I made the mistake of buying the wrong trans for
my 300sd. I got the one for the 123 chassis that
has a cable for the speedo (722.315) but the Sd
has the electric signal setup. I got it on ebay and
the seller said it would fit. (my fault, he gave the id
number correctly)The mechanic who put in my trans said he would be able to take the parts from my origanal trans and put them in the new one so the speedo will work. This involved dropping the driveshaft and removed the tail portion
of the trans. He may be giving me a deal by saying it
will cost $150. He has not had time to do this operation
so I can't say it is a sure thing. The trans I bought was
for a 82-85 300d, cd, td.
Reply With Quote
  #4  
Old 03-14-2005, 01:52 PM
Newbie Benz Dood
 
Join Date: Dec 2004
Location: Traverse City, Michigan
Posts: 147
Any updates?
The trans is installed in mine, and it has the electronic sender for the speedo, while my W123 has the mechanical..I still have the tailhousing from the one I removed....Has anybody done this swap with any success?
__________________
1992 300TE 4matic - Just obtained 12/22/06
1983 300D - SOLD
1997 Dodge 2500 - CTD 400+HP, 1100ft/lbs torque
Reply With Quote
  #5  
Old 03-15-2005, 11:39 AM
Mark Tamburrino
Guest
 
Posts: n/a
Yes-the swap was done with success. I'm pretty sure there was no extra modification required, just fitting and bolting it. The mechanic used my old tailhousing. A good question would be what sealing agent to use when joining the tailhousing to the trans. I did not ask what was used, it was white, never leaked when the car was sold 1.5 years later. You should find out what the best sealing agent is to avoid leaks.
Reply With Quote
  #6  
Old 03-15-2005, 12:14 PM
boneheaddoctor's Avatar
Senior Benz fanatic
 
Join Date: May 2004
Location: Hells half acre (Great Falls, Virginia)
Posts: 16,007
Quote:
Originally Posted by Mark Tamburrino
Yes-the swap was done with success. I'm pretty sure there was no extra modification required, just fitting and bolting it. The mechanic used my old tailhousing. A good question would be what sealing agent to use when joining the tailhousing to the trans. I did not ask what was used, it was white, never leaked when the car was sold 1.5 years later. You should find out what the best sealing agent is to avoid leaks.
Hondabond is great stuff....Honda transmissions are fitted without gaskets using only this stuff between the case halves.....and they NEVER leak....Honda and Acura dealers sell it.....its a grey silicone RTV formulation.
__________________
Proud owner of ....
1971 280SE W108
1979 300SD W116
1983 300D W123
1975 Ironhead Sportster chopper
1987 GMC 3/4 ton 4X4 Diesel
1989 Honda Civic (Heavily modified)
---------------------
Section 609 MVAC Certified
---------------------
"He who fights with monsters might take care lest he thereby become a monster. And if you gaze for long into an abyss, the abyss gazes also into you." - Friedrich Nietzsche
Reply With Quote
Reply

Bookmarks

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 08:26 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