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Topic: Isolator Location 89 ORED? (Read 749 times) previous topic - next topic

Isolator Location 89 ORED?

Anyone have an idea where they put the isolator on the older GVs?  I looked around in my battery box and couldn't find it.  Thought that would have been the most logical place for it.

Benjie, Ashley, Zoey, Fallon, and Lake
Round Rock, TX
In search of our next monster...

Re: Isolator Location 89 ORED?

Reply #1 –
Check in the engine compartment.

Trace the B+ large gauge wire from the alternator or the large battery cables from the batteries.  If a diode based isolator like on most Foretravels, it is certainly large enough to locate-- approx 10" X 3" with large aluminum cooling fins to keep the diodes cool.

Brett
Brett Wolfe
EX: 1993 U240
Moderator, ForeForum 2001-
Moderator Diesel RV Club 2002-
Moderator, FMCA Forum 2009-2020
Chairman FMCA Technical Advisory Committee 2011-2020

Re: Isolator Location 89 ORED?

Reply #2 –
Benjie, on the U225 it was on a metal plate attached to the frame behind the drivers side rear wheel mud flap. You may get access to a bay door back there or just crawl under the coach. It sits out into the open so it will be pretty dirty. There may also be several relays and a solenoid, the boost switch, also mounted to the plate with the isolator.



The selected media item is not currently available.Kent Speers
Locust Grove, OK
1993 U300 SSE 40' (Restored at FOT 2009) Build 4323
720 watts Solar
6V92TA DDEC Silver Engine
2014 Subaru Outback

Re: Isolator Location 89 ORED?

Reply #3 –
OK, I did a quick look in the engine compartment when I was working on the alternator (thought it might be on the wall near the cruise control mounting), but I'll do a more extensive search next time I'm out there.  Thanks for the input!
Benjie, Ashley, Zoey, Fallon, and Lake
Round Rock, TX
In search of our next monster...

Re: Isolator Location 89 ORED?

Reply #4 –
Yup ... a big, ol' thing that you could use for a door stop. When we went through our alternator repair episode with the U225, we had to spend a few nights in a Cummins repair facility parking lot in Baltimore. I had Foretravel on the phone regularly and relayed their advice to the mechanic about checking on the condition of the isolator. "Oh, yeah. It's fine. I checked it and everything is all secure.", said the guy.  2 days later, when I made another mechanic take my phone and crawl under the coach with James Triana on the line, I heard him say,"OK, I think I found it. There is some black stuff leaking out of a crack, and I guess that can't be good."  Apparently the first guy didn't know where to find it OR didn't know what it looked like.  Nice!!
Carol & Jeff Savournin
Usta have a '93 U225 36', Usta have a '95 U320 40', Usta have a '02 U320 40'
Usta have a 2006 Born Free, Usta have a 2011 Phoenix Cruiser
Usta have a 2012 Jeep Wrangler Unlimited 4dr
"Your time is limited, so don't waste it living someone else's life."  Steve Jobs

Re: Isolator Location 89 ORED?

Reply #5 –
Check on the left or drivers side frame rail about 2 feet behind the rear wheel it should be on the outside of the frame, should be able to see it through the side door that is louvered
previous 1984 35 ft ORED 250 HP 3208 Cat       
previous 1998 40 ft U295 CAI 325 hp Cummins
previous 2003 40 Ft u320 build #6140 450 Cummins M11.                                                         
1999 Mazda Miata
Ron, Nancy, Tipper the cat, Max The dog
1997 U 270 36 ft build number 5174 8.3 Cummins

Re: Isolator Location 89 ORED?

Reply #6 –
Found it on Monday morning.  You can see it from the side engine bay opening attached to the frame behind the rear wheel.  Thanks to everyone who commented!
Benjie, Ashley, Zoey, Fallon, and Lake
Round Rock, TX
In search of our next monster...