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Re: [GMCnet] Mercedes Cooling Fan temperature settings (reposted youtube) [message #359315] Fri, 09 October 2020 09:20 Go to next message
Thomas Pryor is currently offline  Thomas Pryor   United States
Messages: 143
Registered: January 2011
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Senior Member
Re posted my Video as Public...Sorry! It demonstrates the functionality of
the revised controller for our MB (EVC) Electronic Viscous Fan /Fan clutch.

https://www.youtube.com/watch?v=vjA_INl9y80

--
Regards,

Tom Pryor
4188 Limerick Dr
Lake Wales, Fl 33859
Cell 248 470 9186

1977 23'B named "CASPER", HARDLY ORIGINAL, (455 EFI) (Pwr. Drive)
(tailgate) (rear bunk beds)
(Webasto petrol boiler) (MB Elect fan clutch) (Brake reaction arms) BUT
STILL A WORK IN PROGRESS!

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Re: [GMCnet] Mercedes Cooling Fan temperature settings (reposted youtube) [message #359329 is a reply to message #359315] Fri, 09 October 2020 14:10 Go to previous messageGo to next message
SteveW is currently offline  SteveW   United States
Messages: 538
Registered: June 2005
Location: Southern California - Ora...
Karma: 1
Senior Member
THANK YOU TOM !!!

I have been anxiously awaiting this development and am ready to plug it in.

I've got what might be an early version of the Mercedes fan controller - the temperature setting is done with a small wooden screwdriver (toothpick). I don't immediately recall where the temperature sensor is - but I kinda recall that it's in the christmas tree hole (TVS).

Might I be so lucky such that this is an easy replacement ?? ie very similar wiring...

1973 23 footer, Griffin aluminum radiator, all Patterson (HEI) ignition, Patterson carburetor, 3.70, Digipanel, 100K miles.

Thanks again !!

Steve W
Southern California

Steve W 1973 : 23' Southern California

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Re: [GMCnet] Mercedes Cooling Fan temperature settings (reposted youtube) [message #359330 is a reply to message #359329] Fri, 09 October 2020 14:40 Go to previous messageGo to next message
Keith V is currently offline  Keith V   United States
Messages: 2337
Registered: March 2008
Location: Mounds View,MN
Karma: 0
Senior Member
interesting, I like the over ride option.
How did you pick the PWM period. it seems slow to me

Keith
78 Royale
Microlevel
________________________________
From: Gmclist on behalf of Steve Weinstock via Gmclist
Sent: Friday, October 9, 2020 2:10 PM
To: gmclist@list.gmcnet.org
Cc: Steve Weinstock
Subject: Re: [GMCnet] Mercedes Cooling Fan temperature settings (reposted youtube)

THANK YOU TOM !!!

I have been anxiously awaiting this development and am ready to plug it in.

I've got what might be an early version of the Mercedes fan controller - the temperature setting is done with a small wooden screwdriver (toothpick).
I don't immediately recall where the temperature sensor is - but I kinda recall that it's in the christmas tree hole (TVS).

Might I be so lucky such that this is an easy replacement ?? ie very similar wiring...

1973 23 footer, Griffin aluminum radiator, all Patterson (HEI) ignition, Patterson carburetor, 3.70, Digipanel, 100K miles.

Thanks again !!

Steve W
Southern California
--
Steve W
1973 : 23'
Southern California

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Keith Vasilakes
Mounds View. MN
75 ex Royale GMC
ask me about MicroLevel
Cell, 763-732-3419
My427v8@hotmail.com

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Re: [GMCnet] Mercedes Cooling Fan temperature settings (reposted youtube) [message #359361 is a reply to message #359315] Sat, 10 October 2020 13:34 Go to previous messageGo to next message
Ray Erspamer is currently offline  Ray Erspamer   United States
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Registered: May 2007
Location: Milwaukee Wisconsin
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So how healthy is it for the fan clutch valve to be rapidly opening & closing like that switch in your demo video?  I would love to know how Mercedes manages it in their computer software. Sent from my U.S.Cellular© Smartphone
-------- Original message --------From: Thomas Pryor via Gmclist Date: 10/9/20 9:21 AM (GMT-06:00) To: gmclist@list.gmcnet.org Cc: Thomas Pryor Subject: Re: [GMCnet] Mercedes Cooling Fan temperature settings (reposted youtube) Re posted my Video as Public...Sorry!  It demonstrates the functionality ofthe revised controller for our MB (EVC) Electronic Viscous Fan /Fan clutch.https://www.youtube.com/watch?v=vjA_INl9y80-- Regards,Tom Pryor4188 Limerick DrLake Wales, Fl 33859Cell 248 470 91861977 23'B named "CASPER",  HARDLY ORIGINAL, (455 EFI) (Pwr. Drive)(tailgate) (rear bunk beds)(Webasto petrol boiler) (MB Elect fan clutch) (Brake reaction arms) BUTSTILL A WORK IN PROGRESS!ReplyForward_______________________________________________GMCnet mailing listUnsubscribe or Change List Options:http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org
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Ray Erspamer 78 GMC Royale Center Kitchen 403, 3.70 Final Drive Holley Sniper Quadrajet EFI System, Holley Hyperspark Ignition System 414-484-9431

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Re: [GMCnet] Mercedes Cooling Fan temperature settings (reposted youtube) [message #359405 is a reply to message #359361] Sun, 11 October 2020 13:58 Go to previous messageGo to next message
Thomas Pryor is currently offline  Thomas Pryor   United States
Messages: 143
Registered: January 2011
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Senior Member
In my discussions and investigations with BorgWarner who designed and developed the Fan/Fan Clutch Assembly for Mercedes Benz. The module I have created emulates the PWM Frequency and Duty cycle they use. In addition to the turn off and turn off temperatures from the on board Engine management system they have an ability to write programs that start the fan at Low speed and as the temperature rises they can increase the speed. Quite a feature! With the age of our fleet of coaches, I don't believe we could write a program (algorithm) that could cover all the requirement ranges. Besides, I'm just not motivated!

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Re: [GMCnet] Mercedes Cooling Fan temperature settings (reposted youtube) [message #359406 is a reply to message #359315] Sun, 11 October 2020 14:22 Go to previous messageGo to next message
Thomas Pryor is currently offline  Thomas Pryor   United States
Messages: 143
Registered: January 2011
Karma: 1
Senior Member
Some how an earlier posting did not arrive on the Forum. So I will update you:

I am building 10 modules this week:



1) Some of them will be for retrofitting the Dumb Controllers that were shipped by Jim At Applied. These will be Called "FAN 2 RETRO" and will include new wiring, Radiator Probe/switch, MB connector. Sorry old wiring and temp probe must be discarded.

2) Some of the them will be for EFI users. These units will use a "trigger to ground" or C2 on the EBL ECU. I'm reasonably sure other
EFI can use the same feature, yes? These will be called "FAN 2 EFI"

3) Some will be used to replenish the depleted inventory Applied GMC inventory of Full kits. SEE: https://www.gmcrvparts.com/product-p/g46104.htm

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Re: [GMCnet] Mercedes Cooling Fan temperature settings (reposted youtube) [message #359409 is a reply to message #359315] Sun, 11 October 2020 15:57 Go to previous messageGo to next message
SteveW is currently offline  SteveW   United States
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Location: Southern California - Ora...
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Thanks again Tom !!!

I’m kinda wondering how many of us have this kit... 50 ? 100 ?? 200 ?? More ??

Steve W
Southern California

Steve W 1973 : 23' Southern California

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Re: [GMCnet] Mercedes Cooling Fan temperature settings (reposted youtube) [message #359417 is a reply to message #359409] Sun, 11 October 2020 22:55 Go to previous message
jimk is currently offline  jimk   United States
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Registered: July 2006
Location: Belmont, CA
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My experience with the switching for over 20,000 miles has not
effected that as it cycles about every 50 miles or more depending on the
conditions.


On Sun, Oct 11, 2020 at 1:57 PM Steve Weinstock via Gmclist <
gmclist@list.gmcnet.org> wrote:

> Thanks again Tom !!!
>
> I’m kinda wondering how many of us have this kit... 50 ? 100 ?? 200
> ?? More ??
>
> Steve W
> Southern California
>
>
> --
> Steve W
> 1973 : 23'
> Southern California
>
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
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--
Jim Kanomata
Applied/GMC, Newark,CA
jimk@appliedairfilters.com
http://www.gmcrvparts.com
1-800-752-7502
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Jim Kanomata
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jimk@appliedairfilters.com
www.appliedgmc.com
1-800-752-7502

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