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01-23-2018, 11:15 AM
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#15
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Senior Member
Join Date: Nov 2016
Location: Desert Hot Springs Ca.
Posts: 947
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I need to do the same thing but as I can raise mine I just need to bypass the "D". That is mine returns to normal height when I put it in "D".
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Mike & Trish Romans 10:9
2011 Mobile Suites 36RSSB3
2014 F-350 6.7L CC DRW
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01-23-2018, 11:32 AM
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#16
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Senior Member
Join Date: Oct 2017
Posts: 1,937
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Quote:
Originally Posted by Dutch Star Don
"Class Z".....I added the Source Engineering solenoids to mine. They're pretty simple to install. They come with a couple of electric air solenoids that temporarily bypass the ride height valves with a momentary switch. I was dragging the rear of my coach when backing up a hill into my parking spot alongside my house.
The solenoids gave me about 3.5" - 4.0" of additional lift. Mine is a tag axle, so yours could be different. I couldn't clear the lower part of the driveway in this photo.
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Things have changed since then. I see a curb to start with.
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Larry & Sheree & KD the CAT
2009 Holiday Rambler Admiral 30SFS Lewis County, Wa.
USN 1964-68, USS LEXINGTON CVS-16
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01-23-2018, 11:49 AM
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#17
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Junior Member
Join Date: Jan 2018
Posts: 7
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Hi Paul, yes please give your parts list. Thanks
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01-23-2018, 12:03 PM
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#18
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Senior Member
Spartan Chassis
Join Date: Mar 2017
Posts: 1,543
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Quote:
Originally Posted by ClassZ
I would appreciate any experience with ways to temporarily raising coach height to get up / down a steep driveway. One key question I have is how much additional height can be gained at the airbags?
1999 Mountain Aire on Spartan MM
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According to Newmar, 3" up and 4" down.
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01-23-2018, 12:30 PM
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#19
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Senior Member
Join Date: Jul 2011
Posts: 648
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ClassZ do you have a HWH air leveling system? HWH controls our leveling and air ride system in our Country Coach.
I slightly modified the controller by putting a cut-out switch on the travel solenoid circuit. If I switch the circuit off at the dash, the ride height will stay wherever I manually place it, using the dash keypad. I've used this cut-out when leaving our property and for several steep approaches, one being a state ferry.
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BRex
'97 Country Coach Intrigue
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01-23-2018, 01:07 PM
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#20
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Senior Member
Join Date: Nov 2016
Location: Desert Hot Springs Ca.
Posts: 947
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Quote:
Originally Posted by BRex45
ClassZ do you have a HWH air leveling system? HWH controls our leveling and air ride system in our Country Coach.
I slightly modified the controller by putting a cut-out switch on the travel solenoid circuit. If I switch the circuit off at the dash, the ride height will stay wherever I manually place it, using the dash keypad. I've used this cut-out when leaving our property and for several steep approaches, one being a state ferry.
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That's what I need to do. How were you able to find the ride circuit?
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Mike & Trish Romans 10:9
2011 Mobile Suites 36RSSB3
2014 F-350 6.7L CC DRW
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01-23-2018, 01:14 PM
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#21
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Senior Member
Join Date: Jul 2011
Posts: 648
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Quote:
Originally Posted by MTK46
That's what I need to do. How were you able to find the ride circuit?
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I read it here, a fews years ago, about pulling the travel fuse from the HWH brain in the dash area. I learned this fast! after a ride height valve failed while we were parked in a busy rest area with the LF of the coach sitting on the tire. By pulling the travel fuse I was able to manually level the coach as if we were in a campsite. With the fuse out, the coach maintained that height even after I released the brakes and we drove down the road. You have to be more vigilant of course in case something leaks down.
I would determine which HWH system you have and look at their schematics to determine which fuse, in a line of a dozen or more, is the travel mode circuit.
Good luck with that.
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BRex
'97 Country Coach Intrigue
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01-23-2018, 01:16 PM
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#22
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Senior Member
Holiday Rambler Owners Club
Join Date: Aug 2010
Posts: 9,746
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On my Valid air leveling system, I raise the coach in manual mode, when I put the coach in gear, the leveling system will automatically go to travel mode. Quickly press the manual button, and the bags stop releasing air.
Maybe your HWH system works the same way.
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Ben & Sharon
2008 43' Holiday Rambler Scepter PDQ
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01-23-2018, 02:35 PM
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#23
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Senior Member
Join Date: Jul 2011
Posts: 648
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My HWH system did NOT work that way. HWH 500 series
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BRex
'97 Country Coach Intrigue
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01-23-2018, 09:35 PM
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#24
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Senior Member
Monaco Owners Club
Join Date: Mar 2011
Posts: 888
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Temporary Ride Height Raise
See below for the parts I ordered from Zoro ( www.zoro.com). I ended up with a second order for more fittings, including some spares.
I did implement a minor difference from the DIY once I got underneath, and mounted each valve near the ride height control valve. I ran a wire up to a switch in the cockpit so I can press to raise the rear as I get to my driveway and release it as I pass the low clearance location.
Paul
First Order
Zoro Item. Product Name. Description
G1592875Tee Tee,1/4 In Tube Qty 2
G0702807Male ConnectorMale Connector,1/8-27,1/4 In Tube Qty 6
G1419713Premair Valves Valve,Solenoid,1/8. Qty 2
Second order
Zoro Item. Product Name. Description
G1592875Tee Tee,1/4 In Tube Sz. Qty 3
G0702685Union Union,1/4 In Tube Sz. Qty 3
G0702807Male ConnectorMale Connector,1/8-27,1/4 In Tube Qty 4
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Paul Whittle
2005 Monaco Signature 45'
525 HP/1850 Ft Lb ISX-15/6-Speed Allison 4000
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01-23-2018, 09:40 PM
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#25
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Senior Member
Monaco Owners Club
Join Date: Mar 2011
Posts: 888
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Quote:
Originally Posted by MTK46
I need to do the same thing but as I can raise mine I just need to bypass the "D". That is mine returns to normal height when I put it in "D".
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Mike,
On my 2005 Signature there is a pressure switch above the generator that is NO, but closes when the Park Brake is on.
I wired a switch in parallel with the pressure sender so that I can use the HWH air leveling to raise the rear and drop the front to get up my driveway while I am in D or R.
Paul
__________________
Paul Whittle
2005 Monaco Signature 45'
525 HP/1850 Ft Lb ISX-15/6-Speed Allison 4000
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01-24-2018, 07:47 AM
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#26
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Senior Member
Join Date: Nov 2014
Posts: 354
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Quote:
Originally Posted by RCLImperial
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Very interesting, but I don't understand one thing - when you raise the coach leveling valve would sense the ride height is too high and would continuously leak air from the exhaust port. Don't you need to close supply air to the leveling valve?
Thanks, Mike
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01-24-2018, 09:41 AM
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#27
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Junior Member
Join Date: Jan 2018
Posts: 7
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Thanks Paul, that is helpful.
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01-24-2018, 09:46 AM
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#28
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Senior Member
Join Date: Mar 2011
Location: SF peninsula
Posts: 217
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Temporary Ride Height Raise
When the valve is energized, the ride height valve is no longer in the circuit because the solenoid valve closes off the connection to the air bag and connects the air bag directly to the high pressure air source. The air bag will continue to rise until I release the momentary contact switch on the dash, or the pressure in the air bag reaches the source pressure.
Since all the air lines are 1/4inch OD, and the solenoid valves are 1/8 inch, the coach does not instantly raise to the max. I hold the switch down until I reach the desired height. When the switch is released, the coach settles back to the height set by the ride height valve. I was initially concerned that the restriction in the air line would be a problem, but it does not seem to be one. I believe that some systems are designed to be “active” in the sense that they make “real time” corrections to body lean on a curve. Those systems probably have larger diameter air lines.
One further note... this system has been in place since 2007,and has had only one problem. In tracking down air leaks in 2014 I discovered that the solenoid valves were leaking from corrosion. I replaced them and did a better job of protecting them from road spray.
Dick L. ‘04 Imperial
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