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Topic: Battery Boost Solenoid location? (Read 806 times) previous topic - next topic

Battery Boost Solenoid location?

read the excellent Beamalarm explanation of the Engine Battery Boost Switch operation.

Appears our solenoid is dead, but unable to locate it in cab dash compartments.  Looked in outside compartment below driver window and in compartment for engine batteries.  Looked under bed around engine and not there either.
 
Have a 96 U295 36'--any ideas where the engine battery boost switch SOLENOID is located?

thanks--Ralph
Ralph & Sandy
Full Time RVers  June 2015
'01 320 Single Slide 40'  450 Cummins--Turtle
24' Haulmark Race Trailer
Full Time Driver & Part Time Flat Toad-- '16 Fusion Hybrid

Re: Battery Boost Solenoid location?

Reply #1 –
Do you have door behind rear wheel , that's where mine is on a 1996 U 270
Irwin

Re: Battery Boost Solenoid location?

Reply #2 –
Here is photo , it is relay on bottom right , kinda dark color.
Irwin

Re: Battery Boost Solenoid location?

Reply #3 –
Like Irwin said is where the boost solenoid should be on a 95 or 96
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: Battery Boost Solenoid location?

Reply #4 –
Ours is in the same place. It is very near the battery isolator. 1997 U295
J D Stevens
1997 U295 CAI 36' Build #5085
2002 Subaru Outback
Motorcade 16869
Bellville, TX

Re: Battery Boost Solenoid location?

Reply #5 –
 Ralph, once you locate it you can remove and take the domed cap off and clean copper contactor etc up and rebuild it. Seal around rim (after rebending it over) with epoxy or? and it will work fine. Saves buying one and will take all of an hour to do it. I did both on the 240 and they work great now.
JohnH
Coachless, now use aircraft. 2003 Ford Travelair TC280 class C. Super shape. Just for 1 yr .
1994 Ford E350 ClassC,total renovation inside and out. Now sold.
2000 U295  36' Cummins 350 c/w Banks Stinger, Resonator upgrade,Solar, LED lites.Residential fridge with slide out pantry. Build 5674. Sold
ex 92 GV 022C ored Cummins. Sold
ex 95 GV240 cat 3116. Sold
2017 Mini cooper s & 2016 land Rover LR2 HSE  LUX.
jhaygarth@aol.com    SKP #130098
treat everyone as you would like to be.

Re: Battery Boost Solenoid location?

Reply #6 –
Snow was on the ground when I was dealing with it.  Wasn't motivated to underneath, will get serious when I bring it back from storage next dry stretch.

Appear to be close to engine above some kinda duct, in the same right rear small compartment for the engine batteries?

Anything about the isolator or relays shown in the foto that would be of concern?  Also wires look pretty small for this kind of load--worth replacing some of them at this age (18 years) to help operations?  Doing winter/spring PM list of projects while stuck at home here in SW WA state.

Good idea about repair service--this 200 amp unit is pretty expensive and the Beamalarm link was out of stock, did find a couple on Amazon.

Thanks--Ralph
Ralph & Sandy
Full Time RVers  June 2015
'01 320 Single Slide 40'  450 Cummins--Turtle
24' Haulmark Race Trailer
Full Time Driver & Part Time Flat Toad-- '16 Fusion Hybrid

Re: Battery Boost Solenoid location?

Reply #7 –
 Looking at that photo I see only 1 solenoid (sort of bronze colour!!) and the wires to one of the lugs make me think it is the Auxiliary start solenoid, not the Boost one. Is there another one to the right of this with red heavier cables going to the lugs?? If so then that one is the Boost. I would take both apart and redo. So simple and no expense and waiting.
JohnH
Coachless, now use aircraft. 2003 Ford Travelair TC280 class C. Super shape. Just for 1 yr .
1994 Ford E350 ClassC,total renovation inside and out. Now sold.
2000 U295  36' Cummins 350 c/w Banks Stinger, Resonator upgrade,Solar, LED lites.Residential fridge with slide out pantry. Build 5674. Sold
ex 92 GV 022C ored Cummins. Sold
ex 95 GV240 cat 3116. Sold
2017 Mini cooper s & 2016 land Rover LR2 HSE  LUX.
jhaygarth@aol.com    SKP #130098
treat everyone as you would like to be.

Re: Battery Boost Solenoid location?

Reply #8 –
Quote from: rfrum –
Appear to be close to engine above some kinda duct, in the same right rear small compartment for the engine batteries?
Thanks--Ralph

The duct is the aux flexible dump hose carrier.
The isolator is on the driver's side behind the safe hanging down from the bedroom.
Elliott & Mary Bray
ex. 1996 36' U295 - Build 4879
ex. 2018 Coachmen Leprechaun 319MB
 

Re: Battery Boost Solenoid location?

Reply #9 –
Like others have said its behind the left rear tire up in the corner right by the isolater at least it is on my 95 u320. Hard to see at first. I had to crawl underneath to find it.
1995 U320 40', 2013 chevy sonic toad, my real love are corvettes have owned 30
 

Re: Battery Boost Solenoid location?

Reply #10 –
RIGHT WHERE YOU SAID.  ONCE I CRAWLED UNDER THE CORRECT END, WAS EASY TO SPOT UP BEHIND THE SAFE.  AND THE BOOST SOLENOID WAS OBVIOUS WITH THE EXTRA BIG BATTERY CABLES ON BOTH SIDES--

THANKS TO ALL.

RALPH
Ralph & Sandy
Full Time RVers  June 2015
'01 320 Single Slide 40'  450 Cummins--Turtle
24' Haulmark Race Trailer
Full Time Driver & Part Time Flat Toad-- '16 Fusion Hybrid