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Old 05-15-2018, 04:19 PM   #1
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Click only from HWH air dump switch

I have a 99 Holiday Rambler Endeavor. It has the manual HWH leveling jacks (joystick). I only get a click from the air dump switch. I have tried all the possible configurations of key on/switch for HWH on etc...

I did not see a fuse for air dump in my fuse block. Any idea if and where there would be a solenoid or the main control board is for the jack system?

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Old 05-15-2018, 07:59 PM   #2
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It's an electric solenoid, as you know. My first step would be to see if 12v is present when the dump button is pressed. It could be a bad valve or solenoid. If no power at the solenoid, check the output wires from the dump switch. If the switch has no power, then trace the system and search for a fuse, but I'd bet the power to the leveling system supplies the dump switch.

Bob & Donna
'98 Gulf Stream Sun Voyager DP being pushed by a '00 Beetle TDI
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Old 05-15-2018, 09:40 PM   #3
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Any idea on where to look for the solenoids? I can see the valves. Are they with the valve?
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Old 05-16-2018, 06:58 AM   #4
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Go to the hwh web site and download the service or troubleshooting manual and it will have steps and pictures of your air solenoids. Our hwh 500 system has a front and rear block with 6 solenoids on each block.

If you can figure out which solenoid is your dump you can then locate it and scope it out. On our 500 system there is an air exhaust port on the side of the solenoid block where air lines screw in etc. Mud dauber bees build a nest in this port and it won't dump when the button is pushed. If you hear the solenoid clicking it probably is working fine just can't exhaust air.
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Old 05-16-2018, 08:09 AM   #5
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Contact Paul at AZPETE on the Irv2 forum. He works for HWH and can answer your questions. His email is pfmaddox@att.net and his phone number is 602-549-3638. He is a Commercial Member and has posted that his phone is always on, and if not answered, leave a message.

He has helped other on this forum and I am sure he can help you
Vera & Ken
1998 Holiday Rambler Imperial, RR8S Chassis
Cummins 6C8.3 mechanical engine, 325HP, 3060 Allison
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Old 05-16-2018, 10:59 AM   #6
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I'm curious about your system - and would like to you sort it out, if I can.

You said you have the HWH leveling with "jacks" - so I take that to mean you have hydraulic leveling (not air leveling).

Is it this system https://www.hwhcorp.com/ml10036.pdf
or perhaps this one https://www.hwhcorp.com/ml0710.pdf

These manuals show how the air dump system works and what the valves look like.
Mike --- 2005 Beaver Patriot Thunder CAT C13 525HP, Vicksburg 42ft, with HydraLift ---
*SMC-Bvr-Mnco History/Chassis Info https://1drv.ms/f/s!AtvAXw_lfqbToxXYREK9YdBP08Jn
*SMC-Bvr-Mnco Wiring Diagrams https://1drv.ms/f/s!AtvAXw_lfqbTm0WTuuNqpn9a8hCh
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Old 05-16-2018, 01:10 PM   #7
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Stand down everyone... I am a dummy...

Got underneath to look for the passenger side valve and saw the bags were deflated. I'm a new owner of the coach and we have been doing some interior work. I went to level it after it has been sitting for a day or two and I must have deflated the bags already and just forgot.

Fired up the coach this morning and the bags inflated. When I shut it down hit the dump switch and psssssssst..

Works fine.
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air, hwh, switch

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