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 ShopForum > Technical Information and Support > Diesel Discussion

Reply
 
LinkBack Thread Tools Display Modes
  #16  
Old 05-11-2009, 04:03 PM
Inna-propriate-da-vida
 
Join Date: May 2008
Posts: 1,885
I'm replacing oil cooler lines this upcoming weekend, and hopefully they come out with no issues. They did not come out nice from the parts car.
__________________
On some nights I still believe that a car with the fuel gauge on empty can run about fifty more miles if you have the right music very loud on the radio. - HST

1983 300SD - 305000
1984 Toyota Landcruiser - 190000
1994 GMC Jimmy - 203000

https://media.giphy.com/media/X3nnss8PAj5aU/giphy.gif
Reply With Quote
  #17  
Old 05-17-2009, 12:16 AM
MercFan's Avatar
Registered User
 
Join Date: Nov 2004
Location: Denver, CO
Posts: 989
Small oil leaks...

Today dad and I worked on the cooler lines again. Had the cooler out already with the broken threads, so we cut off the nipple, drilled out a bigger hole with 21/32 drill, tapped the hole with 18mm x 1.5mm thread, cleaned it all out of junk real good and screwed in the fitting with a copper washer.

We were feeling really good about this fix, but in the process I believe we have made one key mistake: we didn't cut the nipple flush with the nut on the cooler housing. Instead, we wanted to have a bit more metal to screw the new fitting into so we left extra 3 mm or so above the nut. In retrospect we should not have done that. That cut must not have been exactly straight (we used a hacksaw) and even after some careful filing to get it even it must not have been perfectly flat because it leaked between the copper washer somewhere. It's a small leak but it's a leak nevertheless, so I'll need to deal with it. Luckily I have no leaks a the oil filter housing... whew!

So what's my best bet at this point - note that I have everything assembled now... wondering if I should either:

a) take the cooler out again and cut the nipples flush with the nut and then use a new copper washer, or

b) just remove the lines and replace the copper washers with new crush washers - hoping that the new copper washer would compensate for the uneven surface that remains...

Not sure, but it seems that option (a) is what I probably will do - probably should not take shortcuts here. Hopefully I won't have to drain all of the oil again.

Any advice would be welcome.

James

Here is a pic of the almost successful fix -
Attached Thumbnails
Oil cooler repair - help needed...-upper_cooler_line1.jpg  
__________________
1987 Mercedes 300SDL; SOLD
1985 Mercedes 300D; SOLD
2006 Honda Pilot - wife's ride; 122K;
1995 Toyota Land Cruiser - 3X locked; 182K
Reply With Quote
  #18  
Old 05-17-2009, 02:48 AM
Diesel911's Avatar
Registered User
 
Join Date: Sep 2007
Location: Long Beach,CA
Posts: 21,984
Unscrew the repair nipple and degrease the internal threads and the threads on the of the repair Nipple that thread into the Oil Cooler. Coat the Repair Nipple threads that go into the Oil Cooler with JB Weld (or another slow setting Epoxy that can take the heat) and install the Repair Nipple. Follow the directions as to how long to let it cure to harden it.
If for some reason the temperature is lower then it shoud be to cure; someone will have to stand there with an Electric Hair Dryer and keep it warm while it cures (do not use a heat gun as it might get too hot and un-solder something).

If you degrease the threads well there is no reason why the JB Weld will not seal and hold the pressure.

I lost some threads on my upper Oil Cooler Nipple and used JB Weld on the origional threads (partly seen middle top) to make sure mine seals. It has been taking the heat and the pressure for at least 1 1/2 years now.

Attached Thumbnails
Oil cooler repair - help needed...-6.jpg  
__________________
84 300D, 82 Volvo 244Gl Diesel

Last edited by whunter; 05-10-2010 at 06:55 PM. Reason: attached picture
Reply With Quote
  #19  
Old 05-17-2009, 03:08 AM
Diesel911's Avatar
Registered User
 
Join Date: Sep 2007
Location: Long Beach,CA
Posts: 21,984
Even if you had cut the old threads off straight it is hard to hold a Drill Motor by hand and drill a straight hole (and with a big drill Aluminum can be kind of grabby and jerky), and because Aluminum is soft it is also easier to tap a hole slightly crooked.
__________________
84 300D, 82 Volvo 244Gl Diesel
Reply With Quote
  #20  
Old 05-17-2009, 03:35 AM
Registered User
 
Join Date: May 2007
Location: Out in the Boonies of Hot, Dry, Dusty, Windy Nevada
Posts: 9,585
Here is the thread I was thinking about with the pictures. first post.

www.peachparts.com/shopforum/showthread.php?t=232734

Charlie
__________________
there were three HP ratings on the OM616...

1) Not much power
2) Even less power
3) Not nearly enough power!! 240D w/auto

http://i30.photobucket.com/albums/c3...ilys/boobs.gif


Anyone that thinks a 240D is slow drives too fast.

80 240D Naturally Exasperated, 4-Spd 388k DD 150mph spedo 3:58 Diff

We are advised to NOT judge ALL Muslims by the actions of a few lunatics, but we are encouraged to judge ALL gun owners by the actions of a few lunatics. Funny how that works
Reply With Quote
  #21  
Old 05-17-2009, 10:24 AM
MercFan's Avatar
Registered User
 
Join Date: Nov 2004
Location: Denver, CO
Posts: 989
JB Weld it is....

Thanks for the hints and for the link - yeah, I can see how JB Weld can ensure a good seal - will take that route. With JB Weld as a sealer I probably won't even bother with the crush copper washer.

Will let ya know how it goes. THx
__________________
1987 Mercedes 300SDL; SOLD
1985 Mercedes 300D; SOLD
2006 Honda Pilot - wife's ride; 122K;
1995 Toyota Land Cruiser - 3X locked; 182K
Reply With Quote
  #22  
Old 05-22-2009, 10:36 AM
MercFan's Avatar
Registered User
 
Join Date: Nov 2004
Location: Denver, CO
Posts: 989
Question about temp of the oil cooler..

I got the leaks taken care of using JB Weld - I disassembled it all, degreased it well - I sealed the threads with JBWeld and re-assembled. Worked fine - no leaks. Got the car on the road for a short test drive - no problems - cool.

TOday I drove to work - about 22 miles, so I got the engine good and hot. I popped the hood in the parking lot just to be sure. No leaks, which is good, but the oil cooler was only luke warm?! Was expecting it to be really warm after a hard 20+ mile drive at speed limit. Does that seem normal?!
__________________
1987 Mercedes 300SDL; SOLD
1985 Mercedes 300D; SOLD
2006 Honda Pilot - wife's ride; 122K;
1995 Toyota Land Cruiser - 3X locked; 182K
Reply With Quote
  #23  
Old 05-22-2009, 03:38 PM
MercFan's Avatar
Registered User
 
Join Date: Nov 2004
Location: Denver, CO
Posts: 989
Anybody?!

Anybody know if the oil cooler normally gets pretty warm or if it stays cool like that even after a drive... I'm a little concerned about it....
__________________
1987 Mercedes 300SDL; SOLD
1985 Mercedes 300D; SOLD
2006 Honda Pilot - wife's ride; 122K;
1995 Toyota Land Cruiser - 3X locked; 182K
Reply With Quote
  #24  
Old 05-22-2009, 05:02 PM
Diesel911's Avatar
Registered User
 
Join Date: Sep 2007
Location: Long Beach,CA
Posts: 21,984
Carefully feel the differance in temp between the upper and lower Hose. The lower one being the hot Oil in and the upper being cooler Oil going out.
__________________
84 300D, 82 Volvo 244Gl Diesel
Reply With Quote
  #25  
Old 05-23-2009, 04:45 AM
Registered User
 
Join Date: May 2007
Location: Out in the Boonies of Hot, Dry, Dusty, Windy Nevada
Posts: 9,585
There is a thermostat in the oil filter housing regulating the oil flow to the cooler depending on oil temp. middle of winter in Minnisota, or middle of summer in death valley makes a difference.

Charlie
__________________
there were three HP ratings on the OM616...

1) Not much power
2) Even less power
3) Not nearly enough power!! 240D w/auto

http://i30.photobucket.com/albums/c3...ilys/boobs.gif


Anyone that thinks a 240D is slow drives too fast.

80 240D Naturally Exasperated, 4-Spd 388k DD 150mph spedo 3:58 Diff

We are advised to NOT judge ALL Muslims by the actions of a few lunatics, but we are encouraged to judge ALL gun owners by the actions of a few lunatics. Funny how that works
Reply With Quote
  #26  
Old 05-23-2009, 04:50 AM
pawoSD's Avatar
Dieselsüchtiger
 
Join Date: Oct 2004
Location: Grand Rapids, MI
Posts: 14,861
My oil cooler is usually almost too hot to touch after a 20+ minute highway drive....no matter where I touch it!

I'd say the T-stat might not be opening all the way, or maybe the engine is running too cool to begin with? Whats the coolant temp getting up to?
__________________
-diesel is not just a fuel, its a way of life-
'89 420SEL 168k - mine (OC-170,000)
'93 190D 2.2 - 223k - mine (OC-222,700)
'01 E320 Wagon - 149k - mine (OC-154,000)
'05 C240 4matic Wagon - 153k - wifes (OC-154,500)
'01 E320 - 162k - Dad's (OC-163,500)
'07 E350 Wagon - 116k - dad's (OC-121,500)
'02 E320 - 193k - Brother's (OC - 192,000)
'09 E350 4matic Sedan - 84k - Brothers (OC-85,500)
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 12:45 PM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2017, vBulletin Solutions, Inc.
Search Engine Optimization by vBSEO 3.6.0
Copyright 2011 Pelican Parts - Posts may be archived for display on the Peach Parts or Pelican Parts Website -    DMCA Registered Agent Contact Page