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Topic: Hydraulic fan controller (Read 2277 times) previous topic - next topic

Hydraulic fan controller

There had been a lot of discussion about the possible benefits of changing out the OEM S-D electronic fan controller for the mechanical wax ring option.  I don't recall if anyone posted this info, but it addresses a lot of the questions, some of which have been PM'ed to me.  If you click on the first one, it should come up or you may get a bar at the bottom of your screen to click on.  It gives the sales pitch for why you should make the conversion.  We did it and are pretty satisfied so far.

Re: Hydraulic fan controller

Reply #1 –
Noticeable difference.

Re: Hydraulic fan controller

Reply #2 –
Sven, are these manufactured by them or are they using a time proven valve that is currently in production by someone else? What was the cost of the kit?
Scott

Re: Hydraulic fan controller

Reply #3 –
Quote from: dsd –
Sven, are these manufactured by them or are they using a time proven valve that is currently in production by someone else? What was the cost of the kit?
Scott
On my unit the following is printed:  Dynamatic Limited UK , type  553109857210, Made in Swindon England. along with a date code.  I bought the valve at Source Engineering in Eugene and they referred me to Brian Schack RV Repair up the road in Junction City, OR.  The valve cost $725 and the installation was $311.  I was told that this conversion required an experienced mechanic/welder and Schack was the only one they could recommend.
It was not a cheap conversion, but I've been told by others on this forum that I would get my money back in fuel savings.
 

Re: Hydraulic fan controller

Reply #4 –
Same basic part that came on our 97.  Different temp settings

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Reply #5 –
White House products 211 pounds 270$ us
Thanks Scott

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Reply #7 –
Were was 185 full on.  Thermostat is 180 to 200

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Reply #8 –
Quote from: dsd –
White House products 211 pounds 270$ us
Thanks Scott
Interesting. PN 553/1/09857 is the one I bought. The Dynamatic spec sheet list that number as calibrated to 93C (199.4F); same as the one craneman has.

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Reply #9 –
Would be interesting to see spec sheets for various units with temp curves from closed to full open. 

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Reply #10 –
Quote from: MisterEd –
Interesting. PN 553/1/09857 is the one I bought. The Dynamatic spec sheet list that number as calibrated to 93C (199.4F); same as the one craneman has.
I was referring to the part number Sven listed. I still have the original electronic.

Re: Hydraulic fan controller

Reply #12 –
Could someone post pictures were the valve was installed. Both original and kit position would be useful. May vary location, but would like to see what others have done. I'm going to order a valve from the UK manufacturer to use on my coach in the coming weeks. Probably take couple of weeks to ship. Last trip was 4300 miles with fans at 100%.
Scott

Re: Hydraulic fan controller

Reply #13 –
Be aware the Sourch Engineering Kit has five (5) items, all of which you will need to install the control.  If you order the control unit only, you will need to source the other 4 items.

I recommend the Source Engineering Kit and will purchase one soon as they have stock again.

Scott, the control is installed into the metal tube carrying engine coolant to the top of the engine as seen in the picture in post 1 from Source Engineering.  A bung is welded onto the tube and a hole drilled into the tube and the control threaded into the bung.  The existing hoses are lengthen with the kit supplied hoses and connected.

Re: Hydraulic fan controller

Reply #14 –
Here's a photo of my U320 fan controller in the center of the photo.  It is welded to the pipe that goes into the upper Vibraflex (bulging) hose  at the rear of the radiator.  The smaller, more vertical hose (leading to the upper left corner of photo) with green line attaches to the bottom of the coolant reservoir.  The large pipe in the foreground goes to the CAC.  Hope that helps to pin point it.

Re: Hydraulic fan controller

Reply #15 –
Okay, is this were Foretravel originally installed them? Rudy for $1000 I'll can source the bung and correct hoses without adding cheater hoses. I'd rather see the money go to you for upcoming aqua hot consultation and repairs. May have to work a deal with you. I'm currently thinking inboard of the frame support strap below my coaches current fuel filter may be more convenient, directly forward of the current controller.
Scott

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Reply #16 –
The location I mounted ours did not require new hoses, or extensions. I bought the wax capsule on ebay, and machined the bung from an inexpensive stock ORB fitting. (I couldn't find a bung for sale)

Greg

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Reply #17 –
Greg, very nice installation. I think you have the direction I'll be following.
Scott

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Reply #18 –
Thanks, Scott. IMO, the best benefit of having it there is that it's a snap to get at for the low speed adjustment, should I need to do that.

Re: Hydraulic fan controller

Reply #19 –
MisterEd,  I second the "very nice installatiion".  I do not have the equipment and ability to machine a bung.  So Bravo to you Sir.