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 > Tech Help

Reply
 
LinkBack Thread Tools Display Modes
  #1  
Old 04-07-2004, 03:38 PM
chazola's Avatar
Registered User
 
Join Date: Nov 2003
Location: Dorset, United Kingdom
Posts: 1,239
124 Radiator top hose

i noticed some oil or atf has got on my radiator top hose (thermostat to radiator) in places and stained it causing a small amount of tiny cracks in the rubber. Seeing this is a $10 part, should I go ahead and replace it? Is it a straightforward job? (looks like just unding the clamps on each end)
While I'm at it, i noticed a company makes a metal re-inforcement for the top radiator neck where the hose clamps on. My radiator is about 6 years old and I'm a bit concerned about the horror stories of these breaking off. Any views on this?

cheers.

__________________
1993 320TE M104
---------------------------------------------------
past:

1983 230E W123 M102
1994 E300D S124 OM606 (x2)
1967 250SE W108 M129
1972 280se 3.5 W108 M116
1980 280SE W116 M110
1980 350SE W116 M116
1992 300E W124 M103
1994 E280 W124 M104
----------------------------------------------
"music and women I cannot but give way to, whatever my business" -Pepys
Reply With Quote
  #2  
Old 04-07-2004, 04:22 PM
G-Benz's Avatar
Razorback Soccer Dad
 
Join Date: Apr 2001
Location: Dallas/Fort-Worth
Posts: 5,711
Radiator hose replacement is easy...simple on/off clamps and hose.

If your radiator has been replaced, it probably already has the reinforcement...most fail at around 100K (as did mine 4 years ago)...
__________________
2009 ML350 (106K) - Family vehicle
2001 CLK430 Cabriolet (80K) - Wife's car
2005 BMW 645CI (138K) - My daily driver
2016 Mustang (32K) - Daughter's car
Reply With Quote
  #3  
Old 04-07-2004, 04:25 PM
Senior Member
 
Join Date: Apr 1999
Location: Walnut,CA,USA
Posts: 554
You should replace your uper radiator hose,also your 1991 300E should have metal re-inforcement radiator insatlled. just remove uper hose look inside you should see metal re-inforcement ring in uper neck.
__________________
MB STARS Master Guild Technician,17 years MB tech
14 years independent shop owner
Reply With Quote
  #4  
Old 04-07-2004, 07:08 PM
chazola's Avatar
Registered User
 
Join Date: Nov 2003
Location: Dorset, United Kingdom
Posts: 1,239
this might be a stupid question, but I take it I don't need to drain the system just to replace this top hose?
__________________
1993 320TE M104
---------------------------------------------------
past:

1983 230E W123 M102
1994 E300D S124 OM606 (x2)
1967 250SE W108 M129
1972 280se 3.5 W108 M116
1980 280SE W116 M110
1980 350SE W116 M116
1992 300E W124 M103
1994 E280 W124 M104
----------------------------------------------
"music and women I cannot but give way to, whatever my business" -Pepys
Reply With Quote
  #5  
Old 04-07-2004, 07:17 PM
Senior Member
 
Join Date: Apr 1999
Location: Walnut,CA,USA
Posts: 554
Yes you can replace uper radiator hose without drain the coolant first..........BTW summer is comming soon why you just put in a new thermostat in (play safe).
__________________
MB STARS Master Guild Technician,17 years MB tech
14 years independent shop owner
Reply With Quote
  #6  
Old 04-07-2004, 07:35 PM
Mike Murrell's Avatar
Registered User
 
Join Date: Feb 2000
Posts: 2,574
You may or may not have a metal insert in the neck. My '91 W126 car didn't, nor did the Behr OEM I replaced the original with. I searched high & low for one, both locally and on the WEB.

If you ever need one, good luck finding it.
__________________
Mike Murrell
1991 300-SEL - Model 126
M103 - SOHC
"Fräulein"
Reply With Quote
  #7  
Old 04-07-2004, 07:54 PM
chazola's Avatar
Registered User
 
Join Date: Nov 2003
Location: Dorset, United Kingdom
Posts: 1,239
**************.com has them in the 124 upgrades section, $19.95 for the 'kit'. Question is, do I open it up to see if I have it or not, then wait to replace the hose aswell, or just assume I don't and order it anyway?!
__________________
1993 320TE M104
---------------------------------------------------
past:

1983 230E W123 M102
1994 E300D S124 OM606 (x2)
1967 250SE W108 M129
1972 280se 3.5 W108 M116
1980 280SE W116 M110
1980 350SE W116 M116
1992 300E W124 M103
1994 E280 W124 M104
----------------------------------------------
"music and women I cannot but give way to, whatever my business" -Pepys
Reply With Quote
  #8  
Old 04-08-2004, 09:43 AM
Registered User
 
Join Date: Aug 2002
Location: Southeastern PA
Posts: 3,016
Chazola, you can replace the upper radiator hose without draining the coolant, but expect to lose some coolant in the process. If your thermostat housing is black plastic I would replace it with a metal housing while you're installing a new hose. Add sufficient 50/50 mix of MB coolant and water to replace the lost coolant.

Although I haven't seen one of the 124 upgrade kits that you mentioned I doubt that a kit insert will make the upper hose connection as durable as a radiator manufactured with the metal insert. The upper hose connection failed (1 1/2" of the hose connection broke off due to complete circumferential crack) on our 1991 300CE at 118,000 miles and the hose blew off. Fortunately it happened just as my eife was parking the car and no overheating resulted. I repaired it temporarily by removing the broken piece and securing the radiator hose to the remaining stub ... adequate for the 25 mile trip home, but I left the car in the garage until I installed a new Behr radiator.
__________________
Fred Hoelzle
Reply With Quote
  #9  
Old 04-08-2004, 12:13 PM
Bud
Guest
 
Posts: n/a
I just replaced the upper and lower radiator hoses on my '91 300E. I also changed the thermostat.

I recommend that you premix a couple of gallons of 50/50 M-B antifreeze and distilled water. Then get yourself a piece of hose about 30" long. The ideal thing is to cut the metal ends off an old washing machine drain hose.

Open up the access panel to the front tow hook and you will see a drain petcock for the radiator. There is a nipple on the radiator that faces towards the wheel well. If you then look on the other side of the wheel well, you will find a rubber plug that will give you access to the nipple.

Remove the rubber plug and insert the hose from the outside, through the hole and onto the nipple. Place the other end of the hose in a shallow drain pan.

Remove the cap on the coolant tank to permit the coolant to drain better.

Now reach in and open the petcock with your fingers or use a long screw driver. (NOTE, When you close the petcock, do it finger tight only).

Coolant will drain into the pan.

After the coolant has stopped draining, remove the three bolts holding the cover over the thermostat and then loosen the clamp on the upper hose at the radiator end. Carefully twist the hose to get it loose from the radiator and take it off. Remove the other end of the hose from the cover for the thermostat.

Now loosen the clamps on the lower hose and work it loose.

Replace the thermostat with a new one and orient it the same way as the one you took out.

Install a new lower hose. Orient the clamps according to the marks on the clamp and the hose (if they are there). Tighten the clamps.

Put the upper hose on the radiator and slide the other end over the outlet on the cap for the thermostat.

Bolt the thermostat cover but don't over tighten. If the cover is not aluminum, get the new aluminum version before changing the hoses.

Orient the upper hose and clamps and tighten the clamps.

Remove the drain hose from the radiator.

Put the rubber plug back in the wheel well wall.

Tighten the petcock finger tight. If you use a screwdriver, don't over tighten.

Slowly pour the premixed coolant in the coolant tank. Allow it to work it's way back into the system.

At some point, you will not be able to put more coolant into the tank.

Start the car and let the coolant circulate.

After the thermostat opens, you should be able to add more coolant.

Turn off the engine.

Replace the cap on the coolant tank.

The next morning, top up if necessary.

I should have said that you should run the car with full heat on and the controls set to both upper and lower so that coolant is circulated through the heater core and the defroster. Do this before changing the coolant.

After you have finished, make sure you run the engine the same way to get full coolant circulation.

Last edited by Bud; 04-08-2004 at 12:18 PM.
Reply With Quote
  #10  
Old 04-08-2004, 06:36 PM
chazola's Avatar
Registered User
 
Join Date: Nov 2003
Location: Dorset, United Kingdom
Posts: 1,239
thanks for the advice- I actually have the metal thermostat cover and it was replaced with the hoses at 190k. somehow the oil or atf got on the hose after that.

I got a new hose from the dealer today, it felt a bit lumpy though so I blew on it...
Attached Thumbnails
124 Radiator top hose-rubberhosebadger.jpg  
__________________
1993 320TE M104
---------------------------------------------------
past:

1983 230E W123 M102
1994 E300D S124 OM606 (x2)
1967 250SE W108 M129
1972 280se 3.5 W108 M116
1980 280SE W116 M110
1980 350SE W116 M116
1992 300E W124 M103
1994 E280 W124 M104
----------------------------------------------
"music and women I cannot but give way to, whatever my business" -Pepys
Reply With Quote
  #11  
Old 04-09-2004, 02:53 PM
G-Benz's Avatar
Razorback Soccer Dad
 
Join Date: Apr 2001
Location: Dallas/Fort-Worth
Posts: 5,711
Make sure you install the hose using new ferrets!
__________________
2009 ML350 (106K) - Family vehicle
2001 CLK430 Cabriolet (80K) - Wife's car
2005 BMW 645CI (138K) - My daily driver
2016 Mustang (32K) - Daughter's car
Reply With Quote
  #12  
Old 04-09-2004, 03:14 PM
chazola's Avatar
Registered User
 
Join Date: Nov 2003
Location: Dorset, United Kingdom
Posts: 1,239
will do!

typical, as I was installing the new top hose I noticed the bottom hose has a nick in it, I'm guessing done by the not-so-great shop that installed my new belt/tensioner when I first got the car back in November. These hoses are about 3mm thick and it's about 1mm deep at the worst spot, like a flat-bladed screwdriver has hit it. Do you think this could create a weak-spot? Otherwise the hose is in good condition.

Maybe a glue/filler repair? as I'd rather not have to change the hose considering the mess the top one made! and it's more of a pain to get to...

oh btw: I was pleased to find I do have the metal re-inforcement in the radiator top connection
__________________
1993 320TE M104
---------------------------------------------------
past:

1983 230E W123 M102
1994 E300D S124 OM606 (x2)
1967 250SE W108 M129
1972 280se 3.5 W108 M116
1980 280SE W116 M110
1980 350SE W116 M116
1992 300E W124 M103
1994 E280 W124 M104
----------------------------------------------
"music and women I cannot but give way to, whatever my business" -Pepys

Last edited by chazola; 04-09-2004 at 03:24 PM.
Reply With Quote
  #13  
Old 04-09-2004, 04:37 PM
G-Benz's Avatar
Razorback Soccer Dad
 
Join Date: Apr 2001
Location: Dallas/Fort-Worth
Posts: 5,711
Check it for any signs of weeping or coolant residue near the damaged area. If there is, then replace it.

These hoses are otherwise pretty durable...
__________________
2009 ML350 (106K) - Family vehicle
2001 CLK430 Cabriolet (80K) - Wife's car
2005 BMW 645CI (138K) - My daily driver
2016 Mustang (32K) - Daughter's car
Reply With Quote
  #14  
Old 04-09-2004, 05:01 PM
chazola's Avatar
Registered User
 
Join Date: Nov 2003
Location: Dorset, United Kingdom
Posts: 1,239
no weeping or coolant residue thankfully, I'll keep an eye on it though.

__________________
1993 320TE M104
---------------------------------------------------
past:

1983 230E W123 M102
1994 E300D S124 OM606 (x2)
1967 250SE W108 M129
1972 280se 3.5 W108 M116
1980 280SE W116 M110
1980 350SE W116 M116
1992 300E W124 M103
1994 E280 W124 M104
----------------------------------------------
"music and women I cannot but give way to, whatever my business" -Pepys
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 04:24 AM.


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