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HWH jack levelers...: Run off Chassis or Coach batts?
04-27-2010, 09:46 AM
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#1
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Senior Member
Vintage RV Owners Club
Join Date: Jul 2009
Location: Beaverton, OR
Posts: 189
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curious.
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fkloster = Fritz & Erin (& Lucy the Weim)
1991 Beaver Marquis 40' (1,225 ft. lbs. torque)
2011 JGC Overland Summit Toad / U.S Gear Brake
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04-27-2010, 09:55 AM
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#2
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Senior Member
Alpine Owners Club
Join Date: Sep 2005
Location: Livingston, TX
Posts: 563
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Depends upon how your manufacturer set them up. Ours run off the house batteries.
Barb
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Barbara & David O'Keeffe
Figment II (Alpine 2002 36 MDDS)
Blog
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04-27-2010, 06:21 PM
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#3
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Senior Member
Join Date: Mar 2002
Location: Western WA
Posts: 481
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Most Freghtliner chassis units run off the chassis batteries. Do you have electrical schematics for your unit?
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'07 Winnebago Journey 34H,
Toad - "08 Ford Taurus X
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04-27-2010, 07:35 PM
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#4
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Senior Member
Workhorse Chassis Owner
Join Date: Mar 2003
Location: Hudson,Ma.
Posts: 123
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mine chassis batteries 
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George & Joni Hudson Ma.
2003 Itasca Suncruiser 35u - Workhorse W22, Henderson SuperSteer Rear Trac Bar, TST truck tire press and temp mon sys. Toad = 2008 Grand Cherokee , with Brake Buddy
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04-28-2010, 05:00 AM
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#5
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Senior Member
Join Date: May 2007
Location: Northeast PA
Posts: 994
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Should be relatively easy to find out.
If they power up only when the ignition is on, they run off the chassis batteries. If they run without the ignition on, the house batteries.
However, if they power up regardless, try turning each battery bank off at the isolation switches to see which must be on before they operate.
My Alpine runs off the chassis battery.
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Bob & Peg - 2011 Phoenix Cruiser 2552S
"In God we trust" to preserve our country and bring our Troops safely home.
Carry on, regardless..................
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04-28-2010, 09:23 AM
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#6
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Moderator Emeritus
Join Date: Oct 2002
Location: Sheboygan, WI
Posts: 2,567
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Generally (but not always) the jacks are installed on the chassis by the chassis manufacturer, therefore they are connected to the chassis batteries. The control panel and relays are shipped loose to the coach builder for them to install. Rarely will a coach builder relocate them to the house batteries.
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Mark & Leann Quasius
2007 Allegro Bus 42QRP - Cummins 400 ISL
2012 Jeep Wrangler Unlimited - Rubicon
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05-06-2010, 05:10 PM
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#7
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Senior Member
Join Date: Sep 2007
Posts: 140
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Mine run off the Chassis battery.
Don Gray
Winnebago Sightseer
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05-06-2010, 05:25 PM
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#8
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Senior Member
Alpine Owners Club Texas Boomers Club
Join Date: Jan 2009
Location: United States
Posts: 1,254
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Both on mine
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05-07-2010, 03:45 AM
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#9
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Senior Member
Winnebago Owners Club Freightliner Owners Club
Join Date: Aug 2006
Location: Formerly of Washington State
Posts: 880
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Chassis batteries on mine. That is why I like to run engine to supply full charge power to the pump. Do the same for big slide. Little slide I'll run in and out on whatever the batteries have.
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Tom, Cheryl & Blossom(coonhound mix) Formerly of Bellingham,WA'05 Winnebago Journey 36G. FL-XC, Cat 350, aero muffler, AFE filter, 4 FSD Koni's, ultra track bell, SafeT+, FMCA397030, WIT 129107
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05-07-2010, 04:43 AM
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#10
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Senior Member
Alpine Owners Club Texas Boomers Club
Join Date: Jan 2009
Location: United States
Posts: 1,254
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To Clarify, the control works off the chassis, the pump works off the coach
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05-07-2010, 07:10 AM
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#11
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Senior Member
Vintage RV Owners Club
Join Date: Jul 2009
Location: Beaverton, OR
Posts: 189
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Ok i did a an analysis... and on my coach... when the main HWH jack pump kicks on it DEFINATELY pulls of the coach battery array... NOT the Chassis. Now to the issue.... the HWH display light that shows "Red Battery" is coming on and jacks won't kick down. Battery has plenty of juice. Ideas?
__________________
fkloster = Fritz & Erin (& Lucy the Weim)
1991 Beaver Marquis 40' (1,225 ft. lbs. torque)
2011 JGC Overland Summit Toad / U.S Gear Brake
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05-08-2010, 04:05 AM
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#12
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Community Moderator
Gulf Streamers Club Country Coach Owners Club Appalachian Campers
Join Date: Mar 2000
Location: Chattanooga, Tn.
Posts: 8,263
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Try starting the generator if you are not connected to shore power and hold down the aux start or boost switch if you are. Re-try jacks and let us know what you find. As has been mentioned a good ground is as important as good battery power.
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Mike, Certified Master RV Technician
Amy, RV Merchandiser; Roxie & Mei Ling, four legs each
2000 Gulf Stream Scenic Cruiser w/ Banks & 2 toads
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05-11-2010, 11:43 AM
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#13
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Senior Member
Alpine Owners Club Texas Boomers Club
Join Date: Jan 2009
Location: United States
Posts: 1,254
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check your wiring terminals, loose or corroded power cables will do that.
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05-11-2010, 03:48 PM
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#14
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Senior Member
Join Date: Feb 2010
Location: Sunnyvale, California
Posts: 355
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Mine run off the chassis batteries... if I don't turn the ignition to 'ON' they don't run.
Steve
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