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 09-29-2009, 06:29 AM
Registered User
 
Join Date: Jul 2006
Location: Kandy, Srilanka.
Posts: 321
help I really need this

Hello,

I have a few doubt's if all my water hoses are connected properly, could someone please tell me where I can get a diagram of the cooling circuit where it just shows in lines to where each hose goes, just something simple the water seems quite hot so hot that after some time the water would burn your hand I have my thermostat installed and is there thing I could remove and check for damage ?

Thanks Jeremy Brett

Reply With Quote
  #2  
Old 09-29-2009, 07:25 AM
compu_85's Avatar
Cruisin on Electric Ave.
 
Join Date: May 2008
Location: La Conner, WA
Posts: 5,234
That sounds normal... the engine normally operates at 180*F or so.

-Jason
__________________
1991 350SDL. 230,000 miles (new motor @ 150,000). Blown head gasket

Tesla Model 3. 205,000 miles. Been to 48 states!
Past: A fleet of VW TDIs.... including a V10,a Dieselgate Passat, and 2 ECOdiesels.
2014 Cadillac ELR
2013 Fiat 500E.
Reply With Quote
  #3  
Old 09-29-2009, 07:41 AM
Oldwolf's Avatar
124.128/602.962/722.418
 
Join Date: Apr 2009
Location: Raleigh, NC
Posts: 1,017
You should be able to find what you need here.

http://www.detali.ru/cat/oem_mb0.asp?TP=1
__________________
1993 W124 300D 2.5L Turbo, OM602.962
2000 Chevrolet Cavalier, 2.4L DOHC
2002 Ford Explorer, 4.0L SOHC
2005 Toyota Prius, 1.5L

http://www.fuelly.com/sig-us/40601.png
Reply With Quote
  #4  
Old 09-29-2009, 08:07 AM
Registered User
 
Join Date: Jul 2006
Location: Kandy, Srilanka.
Posts: 321
THANK YOU FOR YOUR HELP

First THANK YOU everyone for your reply's I really appreciate this ,
I find that mostly the two hoses coming in and out of the radiator are very hot, and there is this other hose that comes out of the fire wall that carries water too along with three others this goes just below the crank case in between the glow plugs, I can feel this pumping the water at a very fast rate and that's not very hot at all but just warm I cant understand is there some kind of block anywhere? I am confused and worried about the car, previously some mechanic had stolen our thermostat and stuck a large nut into the place where the thermostat goes to block the hole and prevent water flow had this caused any damage? I cant understand this heat is enough to fry an egg
Reply With Quote
  #5  
Old 09-29-2009, 08:16 AM
Registered User
 
Join Date: Jul 2006
Location: Kandy, Srilanka.
Posts: 321
W115
240D
1975
Reply With Quote
  #6  
Old 09-29-2009, 10:33 AM
Oldwolf's Avatar
124.128/602.962/722.418
 
Join Date: Apr 2009
Location: Raleigh, NC
Posts: 1,017
Did you find your car in the website I linked to above?

What temperature does your gauge read when the engine is fully warmed?

The large hoses attached to the radiator will be very hot because this is were most of the engine heat goes to be removed by the radiator. Too hot to the touch is normal.

The other smaller hoses are probably heater hoses and won't be hot until you turn on your heater and some of the coolant water starts being diverted to the heating coil.

The engine will run close to the boiling point of water, so the hoses will become very hot.

Do you have antifreeze in the cooling system?
__________________
1993 W124 300D 2.5L Turbo, OM602.962
2000 Chevrolet Cavalier, 2.4L DOHC
2002 Ford Explorer, 4.0L SOHC
2005 Toyota Prius, 1.5L

http://www.fuelly.com/sig-us/40601.png

Last edited by Oldwolf; 09-29-2009 at 01:03 PM.
Reply With Quote
  #7  
Old 09-29-2009, 12:06 PM
toomany MBZ's Avatar
Registered User
 
Join Date: Nov 2006
Location: central Va
Posts: 7,820
Quote:
Originally Posted by pixelsblack009 View Post
W115
240D
1975
Thanks, you may want to put that in your avatar or signature.
I'm not familiar with that engine.
__________________
83 SD

84 CD
Reply With Quote
  #8  
Old 09-29-2009, 12:20 PM
Biodiesel300TD's Avatar
|3iodiesel300T|)
 
Join Date: Dec 2004
Location: Albany, OR
Posts: 4,845
Running without a thermostat is just going to take the engine longer to warm up. The thermostat is closed when the engine is cold. This keep the coolant in the engine so it can heat up quicker. Once the temp gets warm enough the t-stat opens and allow the rest of the coolant to flow through and keep the engine at the proper temp. While I wouldn't run without a t-stat for too long a little while really won't hurt much.

Before you go any further what does your temperature gauge read?
__________________
Andrew
'04 Jetta TDI Wagon
'82 300TD ~ Winnie ~ Sold
'77 300D ~ Sold
Reply With Quote
  #9  
Old 09-29-2009, 04:05 PM
Registered User
 
Join Date: Sep 2001
Location: central Texas
Posts: 17,281
DO NOT run your engine without the thermostat...
it is not designed like other 'normal' cars...
the FSM specifically forbids it....
it will not cause your engine to run cooler not having the thermostat in there....
Reply With Quote
  #10  
Old 09-29-2009, 05:45 PM
Diesel911's Avatar
Registered User
 
Join Date: Sep 2007
Location: Long Beach,CA
Posts: 50,968
What might be confusing is that the Hot water coming from the Engine and going into the radiator might only be 10 degrees (or less) Fahrenheit cooler when it goes back into the Engine.
So the 180 degrees F going out of the Engine and 170 degrees F going back into the Engine are both hot to the touch.

If you want to find out get an inexpensive Meat or Candy Thermometer (usually made of Glass). Wrap you hose with something to insulate it and slide the Thermometer under it and check it quickly after it has heated up. Do that on Upper and Lower hoses if there is room.

The way it was explained in Trade School was is if the temp difference between the coolant coming out of the Engine and the temp difference of the coolant going into the Engine is too great it causes a lot of stress that can cause something like a Cracked Cylinder Head over time. However, they were speaking of something like a Truck Engine pulling a loaded Trailer; that spends a lot of time under a load.

So as it was explained what your cooling system does is get rid of a large volume of heat but maintains a narrow temperature differential between the in going and out going coolant.
__________________
84 300D, 82 Volvo 244Gl Diesel
Reply With Quote
  #11  
Old 09-29-2009, 05:54 PM
Registered User
 
Join Date: Feb 2007
Location: VA
Posts: 621
Without a T-stat installed, your engine will never reach operating temperature in cooler weather. This will significantly increase the rate at which your engine wears out since the oil never reaches it's operating temp. Also, you will have little or no heat from the vents in the winter time.

__________________
'98 E300 turbodiesel
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 03:38 AM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2024, 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