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M450 (Unique Issues) If you have a unique issue with your M450 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 M450 Parts here too. NO DISCUSSION OF ANY OF THE M450 LAWSUITS ALLOWED HERE.

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  #1  
Old 11-09-2013
Doubledoc Doubledoc is offline
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Default 12V dc Air Compressor not working

During a long dry camping trip, we lost the air pressure to the toilet so it did not work. The 12V dc compressor did not come on! I was able to use the generator and the 120Vac compressor to recover toilet operation.

As I understand it, the start up current for the 12V DC compressor is about 10.5 amps and that some 450LXIs came fused with a 10 amp fuse. Where would I find the location of that fuse on th 450 LXI?
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Old 11-09-2013
Hisham Amaral Hisham Amaral is offline
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Default 12 v DC copressor

Jim the fuse is in the cabinet behind the driver seat you will need a suction cup to pull the door open. The fuse holder is marked you cannot miss it.
Hish
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Last edited by Hisham Amaral; 11-09-2013 at 11:57 AM.
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Old 11-09-2013
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Thomas Rembert
 
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Default

My 97 had a 10amp fuse on the pressure switch in the same bay as the compresser. I removed it. Then I have a 15 amp fuse in the front overhead compartment.
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Old 11-10-2013
Doubledoc Doubledoc is offline
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Thanks, Hish.
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Old 11-10-2013
Hisham Amaral Hisham Amaral is offline
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Jim
Please call if you need anyadditional info on this problem.
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Old 11-12-2013
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I want to just run my 110 unit

anyone done this and let the 12vt model rest?
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Old 11-12-2013
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Woody I've done it several times when my 12V was inop. I disconnected the line out from the 12V and using a small length of air line I connected up to the air chuck in the next bay over. I've done this several times and just a recently as last week when my 12V piston seal blew out.
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Old 11-12-2013
rrueckwald rrueckwald is offline
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I carry a spare pump, but will, when I get around to it, find a way to have the 110vac pump take over when on shore power. I don't want to continue to air up the bus, so a selector valve is probably in order. Ahh, more mods.
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Old 11-12-2013
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Quote:
Originally Posted by rrueckwald View Post
I carry a spare pump, but will, when I get around to it, find a way to have the 110vac pump take over when on shore power. I don't want to continue to air up the bus, so a selector valve is probably in order. Ahh, more mods.
Ron do you have the switch on the dash that says "Sump Dump"??. I leave mine in 'dump' mode and all the 110V compressor charges is the auxiliary tank I think
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Old 11-12-2013
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Thanks, Rob- didn't know that about the Susp Dump switch. (I have never activated it, because the dump happens automatically when I use the HWH level.) Does this switch affect the air leveling function?

If I run the Aux Compressor now, it just runs and runs.
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