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 06-25-2007, 11:49 AM
Registered User
 
Join Date: Jun 2007
Posts: 18
Few questions about my recently purchased 81 300TD Wagon.

Hello everyone, I'm a long time reader of the forum, first time poster.

This weekend I purchased a 1981 300TD MB Wagon from a MB mechanic shop locally. The car had 1 owner and had been serviced at the same MB shop for the past 26 years. It has 167,000 miles and overall the car is in very good condition. I have a few questions if someone would be so kind to answer.

1) I was told that a little oil leakage is "Normal" for these 123's. Over the weekend I noticed a new spot on my driveway underneath my car, It's about the size of a CD/DVD. I'm 99% sure that the spot is oil. Is this ammount more than "Normal"??

2) What color should the oil be? Sounds like a silly question but this is my first Diesel, should the oil look goldish, or should it look black?

3) The Compressor is non-working, I plan on fixing it myself. I've read http://dieselgiant.com/repairyourac.htm from a post here on MS.
What kind of compressor/drier/expansion valve do I need? I've looked at some parts on the net and locally, but I'm not sure which to purchase, I believe that my car came with a GM R4 radial compressor. Can someone give me a direct link to the compressor/drier/expansion valve?

4) When I replace the compressor and etc, can I just get the AC recharged with R-134? I was told that it's illegal to use R-12 and that it's pretty hard to find. So when I finish the AC job, can I just get it charged with R-134 or would that require a different compressor/drier/expansion valve?

Thanks ahead for your time and responses

- Preston
Reply With Quote
  #2  
Old 06-25-2007, 05:51 PM
Registered User
 
Join Date: Jun 2007
Posts: 18
Never mind #2, I figured that one out! =)
Reply With Quote
  #3  
Old 06-25-2007, 11:36 PM
Unofficial wormcan opener
 
Join Date: Dec 2005
Location: Ashland, MA
Posts: 2,602
Post in the diesel section and you will get more responses.
__________________
1987 300TD 309, xxx 2.8.2014 10,000 mile OCI


Be careful of the toes you step on today, as they may be connected to the ass you have to kiss tomorrow. anonymous

“Be who you are and say what you feel, because those who mind don’t matter, and those who matter won’t mind.” Dr. Seuss
Reply With Quote
  #4  
Old 06-26-2007, 04:59 AM
t walgamuth's Avatar
dieselarchitect
 
Join Date: Apr 2005
Location: Lafayette Indiana
Posts: 32,850
leakage is not ever normal. it is caused by a failure of some gasket hose or in a worst case a crack in the oil pan or block of the motor. If you take the time to find the source of the leak it can be fixed. It also should be fixed as they never get better and can only get worse. Unlike the human body a car never heals itself.

I guess worst case is actually an oil cooler line or filter housing leak as it can dump all your engine oil if total failure occurs since the oil there is under pressure.

The benzes are wonderfully well made th0ugh and are pretty mechanic friendly so finding and fixing problems is completely doable,

Good luck with your new purchase and welcome as a poster here.

Tom W
__________________
[SIGPIC] Diesel loving autocrossing grandpa Architect. 08 Dodge 3/4 ton with Cummins & six speed; I have had about 35 benzes. I have a 39 Studebaker Coupe Express pickup in which I have had installed a 617 turbo and a five speed manual. It still needs upholstery redone...I also have a 427 Cobra replica with an aluminum chassis.
Reply With Quote
  #5  
Old 06-26-2007, 08:23 AM
vstech's Avatar
DD MOD, HVAC,MCP,Mac,GMAC
 
Join Date: Mar 2006
Location: Mount Holly, NC
Posts: 26,179
R 12 is certainly not illegal. you do require a license to purchase it, but it is only 20.00 online to take the certification test, and the license is permanent. epa 609 for most cars, 608 for purchasing large quantities. unless your car is a euro, you should have the R4 compressor, and I recommend staying with R12. ebay and craigslist are great sources for the refrigerant.
if you decide to put R134 in, you "should" replace your condenser coil with a parallel flow style, this will require modified fittings and creative engineering to mount in the car.
my 79 has no leaks, my 82 has fewer and fewer leaks as I chase them down and fix them. it's all pretty simple to repair.
welcome to the forum.
__________________
John HAUL AWAY, OR CRUSHED CARS!!! HELP ME keep the cars out of the crusher! A/C Thread
"as I ride with my a/c on... I have fond memories of sweaty oily saturdays and spewing R12 into the air. THANKS for all you do!

My drivers:
1987 190D 2.5Turbo
1987 190D 2.5Turbo
1987 190D 2.5-5SPEED!!!

1987 300TD
1987 300TD
1994GMC 2500 6.5Turbo truck... I had to put the ladder somewhere!
Reply With Quote
  #6  
Old 06-26-2007, 08:36 AM
POS's Avatar
POS POS is offline
Registered User
 
Join Date: May 2004
Location: Houston, Texas
Posts: 2,504
1) Oil leakage can be common, but I don't like leaks either. Find the source and fix it.

2) Diesel oil will turn tar black the minute you pour it into the crankcase.

3) R4 compressor - buy a good one, not a cheap one.

4) These w123s don't cool as well as modern cars - when set up just right, they can have cold AC, but I recommend getting all the cooling power you can and use the R12. It's not illegal. My indy shop will pump up my system with R12 for about $120. More expensive than R134, but it's also a better refrigerant.
__________________
- Brian


1989 500SEL Euro
1966 250SE Cabriolet
1958 BMW Isetta 600
Reply With Quote
  #7  
Old 06-26-2007, 10:47 AM
Registered User
 
Join Date: Jun 2007
Posts: 18
Thanks for the responses everyone.

In regards to the R-4 Compressor, I'll purchase a new one thats for sure, where is a good place online to order from? Like NAPA or what? I've never ordered a MB part online before, so does anyone have any recommendations?
Reply With Quote
  #8  
Old 06-26-2007, 11:01 AM
Registered User
 
Join Date: Jan 2002
Posts: 18,354
Click on 'Buy Parts' on the top of this page.
__________________
1977 300d 70k--sold 08
1985 300TD 185k+
1984 307d 126k--sold 8/03
1985 409d 65k--sold 06
1984 300SD 315k--daughter's car
1979 300SD 122k--sold 2/11
1999 Fuso FG Expedition Camper
1993 GMC Sierra 6.5 TD 4x4
1982 Bluebird Wanderlodge CAT 3208--Sold 2/13
Reply With Quote
  #9  
Old 06-26-2007, 11:05 AM
toomany MBZ's Avatar
Registered User
 
Join Date: Nov 2006
Location: central Va
Posts: 7,820
Welcome! Most engines this age leak oil a little here and there. However, the size of puddle on your drive way needs to be dealt with. I had one that leaked about that much, it was the front crank seal. Visibly leaking when running. I love a wagon!
__________________
83 SD

84 CD
Reply With Quote
  #10  
Old 06-26-2007, 11:26 AM
riethoven's Avatar
Conservative Radical
 
Join Date: Apr 2005
Location: Eastern Long Island
Posts: 939
Quote:
Originally Posted by topfrog007 View Post
Thanks for the responses everyone.

In regards to the R-4 Compressor, I'll purchase a new one thats for sure, where is a good place online to order from? Like NAPA or what? I've never ordered a MB part online before, so does anyone have any recommendations?
Diagnose the problems with your system before you purchase a new compressor. It may be good and there are other factors causing it to not turn on. I think 1981 still has the dreaded "servo" automatic climate control that can be difficult and expensive to fix. Are the controls a horizontal row of buttons with a wood surround which indicates the newer system, or a plastic face plate with chrome trim which is the earlier, more problematic system?

Search the forum, there are many threads on this issue, and buy the Factory Service Manual CD from Mercedes Benz. Best of luck getting it going.
__________________
Doug

1987 300TD x 3
2005 E320CDI
Reply With Quote
  #11  
Old 06-26-2007, 12:39 PM
Registered User
 
Join Date: Jun 2007
Posts: 18
Quote:
Originally Posted by riethoven View Post
Diagnose the problems with your system before you purchase a new compressor. It may be good and there are other factors causing it to not turn on. I think 1981 still has the dreaded "servo" automatic climate control that can be difficult and expensive to fix. Are the controls a horizontal row of buttons with a wood surround which indicates the newer system, or a plastic face plate with chrome trim which is the earlier, more problematic system?

Search the forum, there are many threads on this issue, and buy the Factory Service Manual CD from Mercedes Benz. Best of luck getting it going.

It's a horizontal row of buttons with a wood/plastic surround.

Now that we've determined that, now what?
Reply With Quote
  #12  
Old 06-26-2007, 12:44 PM
Registered User
 
Join Date: Jun 2007
Posts: 18
Quote:
Originally Posted by kerry edwards View Post
Click on 'Buy Parts' on the top of this page.
"Sorry, this product is temporarily unavailable, click here to request a quote."


I tried that, they don't have it. I was just wondering what a good/reliable site is for ordering MB parts?
Reply With Quote
  #13  
Old 06-26-2007, 12:52 PM
Registered User
 
Join Date: Jan 2002
Posts: 18,354
Quote:
Originally Posted by topfrog007 View Post
"Sorry, this product is temporarily unavailable, click here to request a quote."


I tried that, they don't have it. I was just wondering what a good/reliable site is for ordering MB parts?
You might try ******** but my experience is that most on-line import parts sellers are using WorldPac and once you come across that entry in the database, you're going to get it on all of them.
__________________
1977 300d 70k--sold 08
1985 300TD 185k+
1984 307d 126k--sold 8/03
1985 409d 65k--sold 06
1984 300SD 315k--daughter's car
1979 300SD 122k--sold 2/11
1999 Fuso FG Expedition Camper
1993 GMC Sierra 6.5 TD 4x4
1982 Bluebird Wanderlodge CAT 3208--Sold 2/13
Reply With Quote
  #14  
Old 06-26-2007, 01:17 PM
Registered User
 
Join Date: Jun 2007
Posts: 18
http://cgi.ebay.com/ebaymotors/NEW-R4-COMPRESSOR-KIT-CHEVROLET-CORVETTE_W0QQitemZ280127904373QQcmdZViewItem

Is this the same compressor?
Reply With Quote
  #15  
Old 06-26-2007, 03:05 PM
Registered User
 
Join Date: Jun 2007
Posts: 18
As for the oil leak, I've narrowed it down to something on or in the vicinity of the turbo, as to what specifically I'm not sure yet...

Is there a "most likely" culprit of a leak in this area?
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 04:47 PM.


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