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Topic: Radiator and fan motor (Read 1613 times) previous topic - next topic

Re: Radiator and fan motor

Reply #25 –
Here are a couple of photos showing the disassembled motor.
2000 U320 mid entry  #5688
2006 Jeep Liberty


USMCR retired
SDFD retired
FEMA US&R TF8

Re: Radiator and fan motor

Reply #26 –
With all the hydraulic fans in use in all kinds of equipment from Giant Earthmoving Equipment to all the small stuff,Why is finding a fan motor so difficult and so expensive for a Foretravel Motorcoach? I don't understand. What does every other RV manufacturer use on their applications.  Same Engines Same accessories,etc. Convert the obsolete one of a kind Foretravel B/S to something that you can go and buy, Is readily available and easily accessible.. Foretravel built/Builds nice coaches But a LOT of their design engineering is so proprietary it is undesirable. JMO If I had that system on my coach I would be contacting other Mfgs and talking to the techs and finding myself a simple ,cost effective alternative that will do the job. I do not hardly ever read about a hydraulic fan motor issue on any other RV forum concerning other brands, But Here.  So what are other brands doing that don't break the bank and work flawlessly year after year? Thats what I would want on my coach, JMO
Here You Go Contact these folks ask them what they can do for your situation..
https://www.parker.com/literature/Hydraulics%20Group%20US/Bus%20Fan%20Drive%20Solutions%20Guide.
http://www.eaton.com/ecm/groups/public/%40pub/%40eaton/%40hyd/documents/content/ct_154549.pdf
http://www.concentrichydraulics.com/_downloads/Catalogs/FanDrive_US.pdf
http://files.danfoss.com/documents/Fan%20Drive%20Systems%20Technical%20Information%20Manual/520L0824.pdf
91 GV U300 Unihome 40' Build 3811
6V92TA Detroit

Re: Radiator and fan motor

Reply #27 –
The foretravel hydraulic system isn't special. It's on other RV's as well (Monaco).  Looks a lot like the bluebird system: https://www.centralstatesbus.com/wp-content/uploads/2003_BBAA/a3pdfs/a3hydfan.pdf

https://www.parker.com/literature/Hydraulics%20Group%20US/Bus%20Fan%20Drive%20Solutions%20Guide.pdf


There's lots of hydrualic fan threads on iRV forums...including talking about going to the "mechanical" conversion: Wax valve/fan controller - iRV2 Forums


Here is the conversion kit: Source Engineering Inc | Custom RV Chassis | Eugene, OR

1998 U270 34'

Re: Radiator and fan motor

Reply #28 –
Here's a good write up of how the system works: Side Radiator wax valve replacement - iRV2 Forums

Edit: I like this tidbit of info from the link

Quote
Monaco should be able to give you the part numbers for it, I think Monaco's number was the same as the vendor's "new" part number valve.
Side note:
Monaco is tight lipped about the vendor that supplies the cooling unit so good luck getting that info. I snuck it out of them a long time ago and the vendor was very nice but unwilling to sell directly to me. I can understand but it is frustrating that Monaco marks the parts up SO much. When I replaced my radiator, Monaco wanted $14000.00 for the core while my truck radiator shop wanted $1700 for the same thing...

1998 U270 34'

Re: Radiator and fan motor

Reply #29 –
New question
This is a pic of fan controller that was disconnected so fans would run on high and after seeing radiator ( earlier post) I can understand wanting to run on high
How does this one work is it electronic or something else
Thanks for the help
Chris
Ps fan motor is 4 weeks out!!
So I have plenty of time to clean and paint!!
1999 U 320 DGFE
Build Number 5523
Chris & Elka Lang
In the field, Lonoke AR

Re: Radiator and fan motor

Reply #30 –
Is the fan controller still good?  It there was high temp I believe it should have gone to high even though plugged in. 
Rick & Rhonda
2003 U320 4220  Build #6199
Was
91 36' GV 300 Caterpillar, 92 40' U280 300 Cummins, 97 36' U295 300 Cummins, 2002
U320 450 Cummins
(Guess we're hooked)

The selected media item is not currently available.

Re: Radiator and fan motor

Reply #31 –
Rick it has been unplugged since we bought coach PO didn't know what it was when I ask!  He was A retired oral surgeon and always had someone else do the coach work.  I suspect when it started heating up that was the cheap and quick fix. When Unplugged it defaults to high speed.
To answer your question I don't know if it works or not.  When I get all back together I plan to take plug apart and clean then lube with dielectric grease, re connect and see what happens.  Unless someone can give me other directions that is all I know to do at this time.  I don't think it is a wax valve but I don't know!
Chris
1999 U 320 DGFE
Build Number 5523
Chris & Elka Lang
In the field, Lonoke AR

Re: Radiator and fan motor

Reply #32 –
Bernd replaces ours on our 2002 U320 and we never had another minutes trouble with it.    I had unplugged it on a trip to keep from overheating.  Doesn't seem like it was terribly expensive but I don't remember off the top of my head.
Rick & Rhonda
2003 U320 4220  Build #6199
Was
91 36' GV 300 Caterpillar, 92 40' U280 300 Cummins, 97 36' U295 300 Cummins, 2002
U320 450 Cummins
(Guess we're hooked)

The selected media item is not currently available.

Re: Radiator and fan motor

Reply #33 –
Quote from: Chris m lang –
How does this one work is it electronic or something else
When in a quandary, beamalarm.com is often the place to find salvation:

Radiator Fan Drive Control 1090273
1993 U280 SE 40' WTBI, Build: 4359
C8.3 300hp, 6-Speed, Exhaust Brake
960 watts on the roof (6 x 160)
Sorento (or BOLT) on a Kar Kaddy SS
"Nature abhors a vacuum"

Re: Radiator and fan motor

Reply #34 –
Thanks Chuck & Rick
Chris
1999 U 320 DGFE
Build Number 5523
Chris & Elka Lang
In the field, Lonoke AR

Re: Radiator and fan motor

Reply #35 –
We bought the "wax ring" controller this summer.  It seemed to work great on our trip down from Oregon.  I don't have enough miles on it to come up with fuel figures.
2000 U320 mid entry  #5688
2006 Jeep Liberty


USMCR retired
SDFD retired
FEMA US&R TF8

Re: Radiator and fan motor

Reply #36 –
Had some overheating issues ever since I went through a truck wash in Gallup, NM last week. Coolant temperature went from the usual 185ish to 210 plus on level 65mph cruise and SLOWLY dropped after stopping and letting engine high idle at 850 for 5 minutes or so.

Per previous advice on this wonderful forum, I pulled the controller connector today and it was bone dry and badly corroded. Pics attached. Cleaned up connector and lubed with ACF-50 & packed the connector with Oxy Guard. All is well.  Woody.
2001 4010 U320 build #5865 "Bluto-d-Bus" since 09/18
2006 Honda Element ESP Toad
Full timing since 2016 in Western MT
Copilot: Sitka
1975 GMC 260 Avion: sold