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FC (Forward Control Unique Issues) If you have a unique issue with your FC model coach and it can't be answered in one of the other forums here, then this is where you can list it.......List your FC Parts here too.

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  #1  
Old 06-02-2013
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dmurdock dmurdock is offline
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Default Generator won't crank

Yesterday we went out to the ranch for a graduation and I had ~40 minutes to kill so I thought I'd take the bird out for a 30 min ride to stretch it's legs. After airing up, I couldn't get the generator to crank. No click, nothing. I tried the start switch in the overhead panel and the one back by the galley. I then went back to the front and held down the aux battery switch and tried and still nothing. After that messing around I was out of time and couldn't investigate further.

When the bird is parked, I disconnect the house/start batteries because I store unplugged. I didn't disconnect the generator battery because I assumed since it's an isolated circuit there would be no parasitic draw (and if there was, I'd think holding down the aux battery switch would allow the generator to start).

The bird is now 1 1/2 hrs away so I can't tinker with it so I'm asking if y'all think I just have a dead battery? If not, what should I check in the starting circuit for the generator?

thanks!
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Old 06-02-2013
Dennis&Ella Dennis&Ella is offline
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Did you reconnect the house batteries before you tried to start the generator with the aux start switch? If you didn't, holding down the switch did not do anything. More than likely the gen battery is dead, it will drain down over time. I have a battery isolation switch for my start batteries and also one for my generator battery. I also shut down the master switch by the steering wheel and the switch in the cabinet by the sink. I don't have the ability to plug in to a shore tie when I park, so I secure everything.
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Old 06-02-2013
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Quote:
Originally Posted by Dennis&Ella View Post
Did you reconnect the house batteries before you tried to start the generator with the aux start switch? If you didn't, holding down the switch did not do anything. More than likely the gen battery is dead, it will drain down over time. I have a battery isolation switch for my start batteries and also one for my generator battery. I also shut down the master switch by the steering wheel and the switch in the cabinet by the sink. I don't have the ability to plug in to a shore tie when I park, so I secure everything.
Yep, it was all reconnected (I had the CAT running)..
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Old 06-02-2013
Dennis&Ella Dennis&Ella is offline
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Check the battery voltage for the gen battery and your connections, especially the ground cable.
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  #5  
Old 06-02-2013
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check the fuse on your control box - in the genny compartment
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  #6  
Old 06-02-2013
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Planned on checking batteries next time I'm there - Thanks!
Fuse - figured there was one but didn't know where it was - Thanks again!!

Only other thing I'm confused about is that if the aux switch works, shouldn't you be able to start the genny even if the genny battery is completely removed? I've never physically seen how the 2 circuits are joined by the aux switch (assuming it connects to a relay somewhere) and wonder if this is a "heavy duty" circuit join (able to provide full house battery access) or just a low amp "helper" circuit join.

My hope is it's a dead battery...my fear is that some rats got past the traps and chewed on something
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1995 BMC37 Sold
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Old 06-02-2013
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If that battery is old- get a new one. My old 83 did the same at Q a couple years back. Curt Springer helped me spend my money there-nothing cheap at Q
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Old 06-02-2013
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On my 83 FC the power to engage the aux battery solenoid comes from the gennie side. If the gennie battery is dead it won't combine the chassis batteries to start it.

I found there is some kind of drain on my gennie battery. I have a breaker between the gennie battery and the Blue Sea charge relay that I shut off when stored. But the gennie battery still drains???

So you need to somehow get a charge to the gennie battery so the AUX relay will engage.
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Old 06-02-2013
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Quote:
Originally Posted by gcyeaw View Post
On my 83 FC the power to engage the aux battery solenoid comes from the gennie side. If the gennie battery is dead it won't combine the chassis batteries to start it.

I found there is some kind of drain on my gennie battery. I have a breaker between the gennie battery and the Blue Sea charge relay that I shut off when stored. But the gennie battery still drains???

So you need to somehow get a charge to the gennie battery so the AUX relay will engage.
that's exactly the piece of the puzzle I've been looking for thank you!!
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1995 BMC37 Sold
1984 FC35RB Sold
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  #10  
Old 06-02-2013
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on my 84 FC, there were some fuses up high in the streetside forward compartment. No documentation as to what they were. another mysterious challenge
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