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Topic: Chassis batteries dead (Read 271 times) previous topic - next topic

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Chassis batteries dead
Helping my parents with their 2003 U320, and have a problem

Coach has been plugged into shore power for about one month.  Unplugged, and when the ignition key is turned, the volt gauge shows 0 volts.  Turned the Boost switch on, it turned red, but...

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Re: Chassis batteries dead
Reply #1
OE, there was no means of charging the chassis batteries from shore power/generator.  Did they or a previous owner add a device (several viable choices)?

I don't know if the boost solenoid "signal" is from chassis battery.  If so and chassis...

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Re: Chassis batteries dead
Reply #2
If you can get hold of a good quality high-amp portable battery charger, you could try charging the start batteries by connecting the charger to the start battery post on the isolator.  That is, if the the battery isolator is easily accessible.

A...

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Re: Chassis batteries dead
Reply #3
If the chassis batteries are really dead, you may be able to revitalize them with a charger with a "smart" de-sulphation setting. The smart charger won't work on a totally dead battery so you will have to use a jumper to the house batteries as...

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Re: Chassis batteries dead
Reply #4
I don't know if the boost solenoid "signal" is from chassis battery.  If so and chassis battery dead, it will not work.

Foretravel wired diodes to the boost switch, so boost will work if either...

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Re: Chassis batteries dead
Reply #5
Boost relay could be bad also. Brett as a good working solution with the jumper. Jumper cables work good for this also.
Scott

Re: Chassis batteries dead
Reply #6
Boost relay could be bad also. Brett as a good working solution with the jumper. Jumper cables work good for this also.
Scott

If Peter's schematic just above is correct for THIS coach, it could get...

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Re: Chassis batteries dead
Reply #7
RE: "Foretravel wired diodes to the boost switch, so boost will work if either

battery bank is dead. "

. . . ON SOME COACHES. WITH FORETRAVEL THERE ON ABSOLUTES WITH CHANGES BETWEEN YEARS AND MODELS AND MONTH OF PRODUCTION

May have to jumper small...

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