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Old 03-30-2011, 09:10 PM   #1
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1993 36' Land Yacht
jackson , Tennessee
Join Date: Sep 2010
Posts: 111
This badboy stomped a mudhole in my chest and walked it dry.

alright here is what happened. i bought a primo 1993 land yacht diesel pusher last september. i had my garage rewired for 30 amp service. life was good. but i always noticed that every time i started last fall and through the winter the batteries seemed very slow. in fact, i occasionally had to use the aux batteries to get enuf power. over the winter it sat. when i tried to start last week the engine batteries were completely dead. they were all brand new after spending more than $2.500 to have the unit completely gone thru. i called the rv tech who did the redo. he traced everything from the converter (very difficult to find) to the inverter and everything was working perfectly. the isolator worked perfectly too. but the engine batteries (brand new) were not charging. i had been running from battery power alone all that time. and since i was not driving it, depletion was certain. finally, after all of that searching, we went to the aistream manual. we looked at the schematic and found that it is apparently wired in such a way that the isolator is the route to charging the engine batteries. i turned on the aux battery switch and now the engine spins like michael jackson in his prime. is this possible? or even probable? is it somehow unique to this particular unit? please advise/
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Old 03-30-2011, 10:53 PM   #2
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1996 36' Clipper Bus
Tub City , British Columbia
Join Date: May 2009
Posts: 3,274
Images: 55
Chassis Battery Charge

On my 96 Clipper the OEM setup was an isolator. Unless some modification has been made, charging only goes one way and that is from the alternator at the head end pushing juice on down the line.. Grid power will not charge the chassis batteries with this setup.
I have changed out the isolator for a SurePower Separator and this allows charging both ways.
I have more details on this thread in post 5.
http://www.airforums.com/forums/f311...tml#post968136
Dave


Quote:
Originally Posted by bukib View Post
alright here is what happened. i bought a primo 1993 land yacht diesel pusher last september. i had my garage rewired for 30 amp service. life was good. but i always noticed that every time i started last fall and through the winter the batteries seemed very slow. in fact, i occasionally had to use the aux batteries to get enuf power. over the winter it sat. when i tried to start last week the engine batteries were completely dead. they were all brand new after spending more than $2.500 to have the unit completely gone thru. i called the rv tech who did the redo. he traced everything from the converter (very difficult to find) to the inverter and everything was working perfectly. the isolator worked perfectly too. but the engine batteries (brand new) were not charging. i had been running from battery power alone all that time. and since i was not driving it, depletion was certain. finally, after all of that searching, we went to the aistream manual. we looked at the schematic and found that it is apparently wired in such a way that the isolator is the route to charging the engine batteries. i turned on the aux battery switch and now the engine spins like michael jackson in his prime. is this possible? or even probable? is it somehow unique to this particular unit? please advise/
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