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 12-26-2009, 01:20 PM
Registered User
 
Join Date: Mar 2005
Posts: 335
The ALDA is in the way!?

I bought my 1980 300sd the other day and I started to realize a possible vacuum leak due to hard shifting and the car not shutting off. I then realized that my motor was missing the vacuum module on the top back of the ip that goes to the transmission.

Luckily my parts motor had the unobtainium part that my motor was missing. Anyway, when I go to install the part it seems as though the ALDA is in the way. I am guessing that it would just need to be turned ccw slightly to allow the installation of the vacuum module.

I would guess that loosening the large nut under the alda would allow me to rotate the alda jusr enough. I just happen to not have the right size wrench to turn the large nut. Before heading to the parts store I am wondering if I am heading in the right direction. Also, does anyone know the size of that nut?

Thanks
__________________
1998 E320 150,000
1980 300SD 240,000
1965 190D 79,000
Reply With Quote
  #2  
Old 12-26-2009, 01:52 PM
blackestate's Avatar
Registered User
 
Join Date: Aug 2005
Location: Washington State
Posts: 948
I thought the same thing, But if you use and alen bolt, the module kind of slips under the lip of the ALDA and the round allen type bolt will have the room to turn. At least on my 300SD that is what happened.
__________________
83 300SD Dark Silver Dark brown inside
Reply With Quote
  #3  
Old 12-26-2009, 01:54 PM
Registered User
 
Join Date: Mar 2005
Posts: 335
Quote:
Originally Posted by blackestate View Post
I thought the same thing, But if you use and alen bolt, the module kind of slips under the lip of the ALDA and the round allen type bolt will have the room to turn. At least on my 300SD that is what happened.
Interesting. I will have to look at it again. i do have the allen bolts, but I dont think that it is going to slip underneath the ALDA. Let me check again.
__________________
1998 E320 150,000
1980 300SD 240,000
1965 190D 79,000
Reply With Quote
  #4  
Old 12-26-2009, 02:05 PM
Registered User
 
Join Date: Mar 2005
Posts: 335
I double checked and there is no way that the module will fit in without moving the ALDA ever so slightly. I probably have to move it 1/8". I am using a module from a w123. My car is a w116. Would this be a problem or can I just slightly move the ALDA?
__________________
1998 E320 150,000
1980 300SD 240,000
1965 190D 79,000
Reply With Quote
  #5  
Old 12-26-2009, 04:08 PM
blackestate's Avatar
Registered User
 
Join Date: Aug 2005
Location: Washington State
Posts: 948
mine were both w126's
__________________
83 300SD Dark Silver Dark brown inside
Reply With Quote
  #6  
Old 12-26-2009, 08:16 PM
whunter's Avatar
Moderator
 
Join Date: Dec 2003
Location: Metro Detroit, Michigan
Posts: 17,353
Answer

Quote:
Originally Posted by nckmsn View Post
I double checked and there is no way that the module will fit in without moving the ALDA ever so slightly. I probably have to move it 1/8". I am using a module from a w123. My car is a w116. Would this be a problem or can I just slightly move the ALDA?
You should be able to carefully move it enough with large channel-locks.
Reply With Quote
  #7  
Old 12-26-2009, 09:39 PM
dagObx's Avatar
Registered User
 
Join Date: Jan 2008
Location: Outer Banks, NC
Posts: 382
Or just take it off completely. You will be surprised at the low-end power increase.
Search "ALDA" & see what you might be missing.
Reply With Quote
  #8  
Old 12-27-2009, 02:22 AM
Registered User
 
Join Date: Mar 2005
Posts: 335
Quote:
Originally Posted by whunter View Post
You should be able to carefully move it enough with large channel-locks.
do you mean that I should loosen the large nut below the alda 1st or just turn the alda with large channel locks directly on the alda?
__________________
1998 E320 150,000
1980 300SD 240,000
1965 190D 79,000
Reply With Quote
  #9  
Old 12-27-2009, 09:54 AM
Custom User Title
 
Join Date: Jun 2008
Location: Simi Valley, CA (SoCal)
Posts: 454
Loosen the nut first. It's captured on the IP, so it's going to seem like you are tightening it. Hold the ALDA and turn the nut CW.
__________________
mjk

'84 300SD 119KMi (Liesl der Diesel)
'84 300D 326KMi when the oil left (former parts car)
'82 300SD 253KMi (new parts car)
Reply With Quote
  #10  
Old 12-27-2009, 11:19 AM
whunter's Avatar
Moderator
 
Join Date: Dec 2003
Location: Metro Detroit, Michigan
Posts: 17,353
Answer

Quote:
Originally Posted by nckmsn View Post
do you mean that I should loosen the large nut below the ALDA 1st or just turn the ALDA with large channel locks directly on the ALDA?
Hold the bottom nut with a crescent or channel-locks.
Turn the ALDA counter clock wise.

I am guessing the PO had the ALDA off.
If the clocking distance/motion is small enough, I have tweaked the ALDA position counter clock wise with large channel locks directly on the ALDA.
Reply With Quote
  #11  
Old 12-27-2009, 11:44 AM
Registered User
 
Join Date: Mar 2005
Posts: 335
Quote:
Originally Posted by whunter View Post
Hold the bottom nut with a crescent or channel-locks.
Turn the ALDA counter clock wise.

I am guessing the PO had the ALDA off.
If the clocking distance/motion is small enough, I have tweaked the ALDA position counter clock wise with large channel locks directly on the ALDA.
Thank you for the responses. I'll look into taking the alda completely off, but I am going to guess that it wont be my cup of tea. What do you think about taking it off?

Thanks
__________________
1998 E320 150,000
1980 300SD 240,000
1965 190D 79,000
Reply With Quote
  #12  
Old 12-27-2009, 11:54 AM
whunter's Avatar
Moderator
 
Join Date: Dec 2003
Location: Metro Detroit, Michigan
Posts: 17,353
Answer

Quote:
Originally Posted by nckmsn View Post
Thank you for the responses. I'll look into taking the alda completely off, but I am going to guess that it wont be my cup of tea. What do you think about taking it off?

Thanks
IMO; it is a bad idea on the OM617, and not very good on the 60x engines.
Reply With Quote
  #13  
Old 12-27-2009, 11:57 AM
Registered User
 
Join Date: Mar 2005
Posts: 335
Quote:
Originally Posted by whunter View Post
IMO; it is a bad idea on the OM617, and not very good on the 60x engines.
Enough said. I'll just turn it a little.
__________________
1998 E320 150,000
1980 300SD 240,000
1965 190D 79,000
Reply With Quote
  #14  
Old 12-27-2009, 01:00 PM
Ian White's Avatar
machinemanjr
 
Join Date: Jan 2009
Location: Spokane, Washington
Posts: 643
Quote:
Originally Posted by whunter View Post
IMO; it is a bad idea on the OM617, and not very good on the 60x engines.
Care to elaborate?

Ian
__________________
Regards,
Ian White

1995 E300 Diesel w124 OM606
2007 GMC Sierra Classic 1500 4x4 5.3L

2001 BMW 740i E38 M62 (past)
1981 300SD w126 OM617 (past)
Reply With Quote
  #15  
Old 12-27-2009, 01:09 PM
Crazy_Nate's Avatar
Registered User
 
Join Date: Jan 2008
Location: Hampton Roads
Posts: 567
Quote:
Originally Posted by Ian White View Post
Care to elaborate?

Ian
If you take the ALDA off, you'll be delivering more fuel. I would assume that you should figure out your exhaust gas temperatures before and after you modify fuel delivery.

It serves a purpose, but, if it doesn't work properly (or is maladjusted), it can cause performance loss. IMO, I'd rather burn just the right amount of fuel, rather than dump excess into the engine.
__________________
1982 240D, sold 9/17/2008
1987 300D Turbo
W124.133 - 603.960, 722.317 - Smoke Silver Metallic / Medium Red (702/177), acquired 8/15/2009
262,715 and counting
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 03:34 PM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2019, 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