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 04-08-2008, 12:37 AM
Registered User
 
Join Date: Apr 2006
Posts: 26
300d transmission swap gone bad

I currently installed a transmission from a sd 81 300sd w126 into my 82 300d w123. I converted the rear tailstock for the manual speedometer. It was up on stands and i put fluid in it, started it and it ran through all gears forward fine even 4th. In neutral the wheels would roll forward and in park they would try but then the transmission would engage park. I checked fluid and added some more atf to replenish it and all of a suddent it would only move the wheels forward in all gears except in park they'd roll forward til the park clicked/engaged. Well after that i let the car down and checked the fluid which was fine and the car won't pull itself at all! Please any help would be greatly appreciated. The 300sd transmission was good b/c i parted the car out a year ago and drove it before removed. Thanks guys

Reply With Quote
  #2  
Old 04-08-2008, 12:56 AM
Registered User
 
Join Date: Dec 2002
Location: RI shore
Posts: 2,937
you might have messed up the parking pawl geometry, it's actually rather sensitive to the axial position of the pawl on its pivot. e.g., a thin washer behind the pawl on its pivot shaft made a difference whether or not it engages the sectors on thge output shaft. Could be something else too! Better take that rear cover off again.
__________________
'82 300SD - 361K mi - "Blue"

"Good judgement comes from experience. Experience comes from bad judgement."

listen, look, .........and duck.
Reply With Quote
  #3  
Old 04-08-2008, 08:17 PM
Mustang_man298's Avatar
Man of the fire
 
Join Date: May 2006
Location: Shingletown,Ca
Posts: 941
Quote:
Originally Posted by 500selproud View Post
I currently installed a transmission from a sd 81 300sd w126 into my 82 300d w123. I converted the rear tailstock for the manual speedometer. It was up on stands and i put fluid in it, started it and it ran through all gears forward fine even 4th. In neutral the wheels would roll forward and in park they would try but then the transmission would engage park. I checked fluid and added some more atf to replenish it and all of a suddent it would only move the wheels forward in all gears except in park they'd roll forward til the park clicked/engaged. Well after that i let the car down and checked the fluid which was fine and the car won't pull itself at all! Please any help would be greatly appreciated. The 300sd transmission was good b/c i parted the car out a year ago and drove it before removed. Thanks guys
You said it was fine -a year ago- and has been sitting around since until now. There's 3 things auto trannies hate, sitting (lets the internal servo seals get dry/hard), water (eats the glue that bonds the friction material), and brake fluid (eats the seals). It sounds like you have either something leaking by, or else you have a stuck valve in the valve body from sitting, or do not have the manual valve inside the pan engaged correctly to the shaft that sticks out for the shift linkage to connect to, or something is wrong with the linkage itself.. I would check the linkage first, then the manual valve . If the parking pawl locks it in park but not in other gears, it is fine.

__________________
Chris
64 190D R.I.P.
80 240D W/617 engine -for sale
82 240D -for sale
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 04:56 AM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2024, vBulletin Solutions, Inc.
Search Engine Optimization by vBSEO 3.6.0
Copyright 2024 Pelican Parts, LLC - Posts may be archived for display on the Peach Parts or Pelican Parts Website -    DMCA Registered Agent Contact Page