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10-22-2008, 03:01 PM
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#1
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Senior Member
Join Date: Jun 2005
Location: San Diego, CA
Posts: 175
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After 2.5 years, my 5.7 gave up the ghost. The motor got so hot that I could not touch it. I turned off the pump to let it cool down but as soon as it was back on, would run only for a few moments before quitting. Fortunately, it was replaced under warantee.
SDCyclist
2006 36FDDS
And My Bicycles
__________________
2006 Alpine 36 FDDS
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10-22-2008, 03:01 PM
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#2
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Senior Member
Join Date: Jun 2005
Location: San Diego, CA
Posts: 175
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After 2.5 years, my 5.7 gave up the ghost. The motor got so hot that I could not touch it. I turned off the pump to let it cool down but as soon as it was back on, would run only for a few moments before quitting. Fortunately, it was replaced under warantee.
SDCyclist
2006 36FDDS
And My Bicycles
__________________
2006 Alpine 36 FDDS
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10-28-2008, 02:55 PM
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#3
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Senior Member
Join Date: Jun 2005
Location: San Diego, CA
Posts: 175
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Last week a new Shureflo 5.7 was installed. It worked for 24 hours then failed while I was BLM camping in the desert near Borrego Springs. Is that Murphy's law? Water pump failure in the desert? Fortunately, our camping friends had a rig with a pump that worked. We were just busy transferring water from their rig to mine! Oh, at least we had a lot of beer!
sdcyclist
2006 36 FDDS
Minus one water pump
__________________
2006 Alpine 36 FDDS
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10-28-2008, 03:22 PM
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#4
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Senior Member
Alpine Owners Club
Join Date: Dec 2001
Location: Las Vegas, NV
Posts: 1,100
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sdcyclist,
Was the running voltage to the pump checked? WRV's wiring is not up to the requirements for the new (5.7) pump. The other concern would be loose wire connections, as noted in many other posts. Low voltage at the pump can cause overheating and failure. I still would be suspicious of the "new" pump due to it's short life.
__________________
Dale Gerstel
AMG GTS
Las Vegas, NV
Had: 2007 Limited SE 40fdts
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10-28-2008, 03:54 PM
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#5
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Senior Member
Join Date: May 2004
Location: Auburn, CA, Havasu, AZ & Mulege, BCS
Posts: 5,385
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The water pump is one place where a failure makes a real mess of motorhome use. For years I've carried a spare pump. After picking up the 08 last year, I bought the flex tubing kit @ CW & installed the spare pump next to the main pump. Now I can wire/plumb in the spare to obviate a 5.7 failure in about 15 minutes. If you don't pack a spare, I'd suggest doing so. If you dry camp or live off the house pump (I do to take full advantage of the Vagabond RO whole house purification system), I'd have it installed for a minimal change-over just in case.
That's my 1000th post. Guess you get one campfire for each 200.
__________________
Baja-tested '08 2-slide 36'
Alpine: The Ultimate DIY'er Project
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10-28-2008, 06:53 PM
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#6
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Senior Member
Alpine Owners Club
Join Date: Dec 2001
Location: Las Vegas, NV
Posts: 1,100
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Congratulations Mike, I am struggling to get to 500. By the way it is:
posts = "campfires"
10 = 1
75 = 2
250 = 3
500 = 4
1000= 5
__________________
Dale Gerstel
AMG GTS
Las Vegas, NV
Had: 2007 Limited SE 40fdts
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10-29-2008, 03:03 AM
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#7
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Senior Member
Join Date: May 2003
Location: Winter Haven Brownsville, TX
Posts: 1,143
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Dale,
What gauge wire does the 5.7 require. My 5.7 is almmost 4 years old and has never worked well unless I am on shore or generator power.
__________________
Wayne & Kathy
05 Alpine 40FDQS #75330 Towing 24' car hauler, 2012 Spyder, 2003 Harley FatBoy
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10-29-2008, 10:27 AM
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#8
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Member
Join Date: Jun 2007
Posts: 32
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The best way to wire these new high output pumps is to run an 8 or 10 gauge fused wire [20 amp] from the coach batteries to a 30 amp relay at the pump. Use the origonal pump wire to power the relay. Also, ground the pump to the coach frame close to the pump and the factory ground wire. The reason for this, on most coaches there could be as much as a 2.5 volt drop in voltage at the pump. That is wye it works when you are plugged in. The inverter raises the voltage about 2 volts. have fun Rick
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RJV1210 2002 Alpine Coach 36mdds
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10-31-2008, 09:37 AM
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#9
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Senior Member
Join Date: Jun 2005
Location: San Diego, CA
Posts: 175
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Indeed, wiring was the problem. With the pump on but no flow, the voltage was 12v, as soon as a spigot was opened the voltage fell to 8v. Now, I have a heavier guage wire installed with a straight run from the batteries.
sdcyclist
2006 36FDDS
Water On!
__________________
2006 Alpine 36 FDDS
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