Fan Clutch Toast!! Ordered Remanufactured MB - Page 5 - Mercedes-Benz Forum
Reply
 
LinkBack Thread Tools Display Modes
post #41 of 104 (permalink) Old 06-07-2016, 12:06 PM
Lifetime Premium Member
 
Real1shepherd's Avatar
 
Date registered: Jul 2009
Vehicle: '92 300TE 4matic 280,000miles, '92 300TE 4Matic 'Ice Blue Metalic' 101,000miles
Location: Washington
Posts: 9,917
Mentioned: 2 Post(s)
Quoted: 485 Post(s)
Lifetime Premium Member
Quote:
Originally Posted by dave300D93 View Post
I never could understand how laying a fan clutch assembly on it's side instead of straight up would cause it to fail. Can anyone explain this?
It's the weight of the fluid on the seals in that position....it's designed to orient vertically at all times. It probably takes a long time in storage, laying down, for the adverse effect, but it does happen on occasion.

Kevin
Jayare likes this.
Real1shepherd is offline  
Sponsored Links
Advertisement
 
post #42 of 104 (permalink) Old 06-07-2016, 12:52 PM
BenzWorld Elite
 
tjts1's Avatar
 
Date registered: Apr 2009
Vehicle: 87 300D 5 speed
Location: The slums of Beverly Hills
Posts: 5,159
Mentioned: 5 Post(s)
Quoted: 691 Post(s)
Quote:
Originally Posted by Richard F View Post
Out of interest what is the solution?
On the om603, 2 electric fans one pusher one puller driggered by a temperature switch at 82c. On the om606, I'm setting up dual puller fans from a Prius (the only fabs thin enough to fit in the space) triggered by a temp switch at 82c. On the m102 powered 190e one very powerful puller fan from a Volvo triggered by megasquit at 87c.

Triggering religious fanatics since 1969

To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.

Last edited by tjts1; 06-07-2016 at 01:02 PM.
tjts1 is offline  
post #43 of 104 (permalink) Old 06-07-2016, 01:06 PM
BenzWorld Senior Member
 
geordie's Avatar
 
Date registered: Aug 2002
Vehicle: 2002 SLK32AMG,1995 E320 Cab 1990 300CE(Gone).2002 ML320 (Gone)
Location: Richmond,VA USA
Posts: 477
Mentioned: 1 Post(s)
Quoted: 16 Post(s)
I got scared once while stuck in traffic while driving the E320 cab, the temp gauge started flirting with the red zone. Fortunately the top was down and the AC was off.
I bought a device called a "cool harness" which is basically a resistor that goes in parallel with the coolant sender to bring the aux fans in at 95 Celsius.
It seems to work very well - no more scares.
tjts1 likes this.

Geordie
VA USA
2002 SLK32///AMG
1995 E320 Cabriolet
geordie is offline  
Sponsored Links
Advertisement
 
post #44 of 104 (permalink) Old 06-07-2016, 02:18 PM
BenzWorld Elite
 
sbaert's Avatar
 
Date registered: Jun 2007
Vehicle: '95 E300 DIESEL, '91 600SEL, '92 600SEL
Location: San Diego/USA & Belgium/Europe
Posts: 16,529
Mentioned: 27 Post(s)
Quoted: 1848 Post(s)
As Nobletruths stated earlier, IF you have a properly functioning cooling system there is never any worry about running hot or the need to mod the system.

Read my post from a few years back. I went through the Behr clutch fans (both Chinese and German versions), only to settle for the OE MB clutch made by Horton.

Since then, it never touches the 100C mark even on the hottest of days.
tuttebenne and Real1shepherd like this.
sbaert is offline  
post #45 of 104 (permalink) Old 06-07-2016, 03:46 PM
BenzWorld Elite
 
tjts1's Avatar
 
Date registered: Apr 2009
Vehicle: 87 300D 5 speed
Location: The slums of Beverly Hills
Posts: 5,159
Mentioned: 5 Post(s)
Quoted: 691 Post(s)
Quote:
Originally Posted by geordie View Post
I got scared once while stuck in traffic while driving the E320 cab, the temp gauge started flirting with the red zone. Fortunately the top was down and the AC was off.
I bought a device called a "cool harness" which is basically a resistor that goes in parallel with the coolant sender to bring the aux fans in at 95 Celsius.
It seems to work very well - no more scares.
That is a really good solution on the later w124s with dual aux fans. Those 2 pusher fans while not ideal are powerful enough to cool the engine on their own IF triggered early with the cool harness. On early w124s with the single aux fan you're shit out of luck. On the w210 MB did a cheap cheat and only used one fan motor while driving the second with a small belt off the first. It's a crap setup.
Jayare likes this.

Triggering religious fanatics since 1969

To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.

Last edited by tjts1; 06-07-2016 at 03:51 PM.
tjts1 is offline  
post #46 of 104 (permalink) Old 06-07-2016, 07:40 PM
Lifetime Premium Member
 
dave300D93's Avatar
 
Date registered: Dec 2012
Vehicle: 93 300D
Location: Ft. Washington, MD
Posts: 255
Mentioned: 0 Post(s)
Quoted: 12 Post(s)
Lifetime Premium Member
Quote:
Originally Posted by Real1shepherd View Post
It's the weight of the fluid on the seals in that position....it's designed to orient vertically at all times. It probably takes a long time in storage, laying down, for the adverse effect, but it does happen on occasion.

Kevin
Thanks for the explanation....but it still doesn't make sense how the miniscule weight of a fluid can affect a seal that is subjected to much greater extremes like heat, pressure, expansion, contraction....

But we as W124 owners have much bigger fish to fry than a pissy little fan clutch.....
dave300D93 is offline  
post #47 of 104 (permalink) Old 06-08-2016, 12:41 AM
BenzWorld Elite
 
Richard F's Avatar
 
Date registered: Feb 2014
Vehicle: 1994 SL320
Location: UK
Posts: 1,808
Mentioned: 0 Post(s)
Quoted: 449 Post(s)
Garage
Quote:
Originally Posted by tjts1 View Post
On the om603, 2 electric fans one pusher one puller driggered by a temperature switch at 82c. On the om606, I'm setting up dual puller fans from a Prius (the only fabs thin enough to fit in the space) triggered by a temp switch at 82c. On the m102 powered 190e one very powerful puller fan from a Volvo triggered by megasquit at 87c.
It seems a very complex solution to avoid replacing a fan clutch.
Richard F is offline  
post #48 of 104 (permalink) Old 06-08-2016, 05:00 AM
BenzWorld Elite
 
tuttebenne's Avatar
 
Date registered: Jul 2005
Vehicle: W124
Location: Long Island
Posts: 4,550
Mentioned: 6 Post(s)
Quoted: 483 Post(s)
Quote:
Originally Posted by tjts1 View Post
... I doubt they would cover and collateral damage from a bad fan clutch....
Yes I doubt it too but a failed fan clutch doesn't result in collateral damage. We have all been talking about situations where engine temp creeps up in hot weather not cars that have exploded fan clutch bearings.
Jayare and Real1shepherd like this.

'
'93 400E
'93 500E
'94 E320TE
'00 E320
'02 E320
'73 Alfa GTV
'77 308GTB
tuttebenne is offline  
post #49 of 104 (permalink) Old 06-08-2016, 05:56 AM
Lifetime Premium Member
 
Real1shepherd's Avatar
 
Date registered: Jul 2009
Vehicle: '92 300TE 4matic 280,000miles, '92 300TE 4Matic 'Ice Blue Metalic' 101,000miles
Location: Washington
Posts: 9,917
Mentioned: 2 Post(s)
Quoted: 485 Post(s)
Lifetime Premium Member
Quote:
Originally Posted by dave300D93 View Post
Thanks for the explanation....but it still doesn't make sense how the miniscule weight of a fluid can affect a seal that is subjected to much greater extremes like heat, pressure, expansion, contraction....

But we as W124 owners have much bigger fish to fry than a pissy little fan clutch.....

It's a long term, storage shelf phenomenon. And some of these fans sit a long time until sold and not necessarily in climate controlled warehouses.

Kevin
Real1shepherd is offline  
post #50 of 104 (permalink) Old 06-08-2016, 06:34 AM
BenzWorld Elite
 
humblejoe's Avatar
 
Date registered: Feb 2007
Vehicle: 04 odyssey (265k) 1995 E320 wagon (295k)
Location: SEPA
Posts: 2,786
Mentioned: 4 Post(s)
Quoted: 326 Post(s)
The fluid is not pressing on the front seal in a vertical or face up position. Its when the clutch is left on its face that the very thin fluid can slowly weep from the front seal.
They are to be stored vertical or horizontal, but facing up (front to the sky).
Jayare likes this.


To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.

"alte Schulqualität"
W124, One of the last great gifts of West Germany
humblejoe is offline  
Sponsored Links
Advertisement
 
Reply

  Mercedes-Benz Forum > Mercedes-Benz Sedan Forums > W124 E,CE,D,TD Class

Quick Reply
Message:
Options

Register Now



In order to be able to post messages on the Mercedes-Benz Forum forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.

Password:


Confirm Password:
Email Address
Please enter a valid email address for yourself.

Email Address:
OR

Log-in











Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page
Display Modes
Linear Mode Linear Mode



Posting Rules  
You may post new threads
You may 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 Off
Trackbacks are On
Pingbacks are On
Refbacks are On

 

Title goes here

close
video goes here
description goes here. Read Full Story
For the best viewing experience please update your browser to Google Chrome