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Old 07-30-2021, 06:23 PM   #1
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HELP! HWH Air System Failure

Just returned home from getting all 4 air bags removed and replaced with new bags. They did find that all 3 ride height valves were OK and not needing replaced. They found that the HWH cartridge solenoid was bad and replaced it.

Upon getting home, I hit the level button and it dumped the air from the pax side and added air to the driver side and the coach was level where we normally park.

After leaving the coach and then going back inside, the coach shook and the HWH panel lit up like a Christmas tree - blinking lights and such. Not happy. Now the coach is sitting on the frame and the air will not raise it at all (even the pax side).

So I think it is something to do with a fitting either coming lose or blowing off. A mobile mechanic is coming in the AM to help.

Can I move it forward to roll the front end on some 2X10's built up into a ramp so we can comfortably get under to inspect and try to find the leak?

Thanks!
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Old 07-30-2021, 11:41 PM   #2
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you just have to worry about clearance. I can move mine with bags empty but of course there is no suspension and it will bang on the stops with any little bump. I doubt yours is any different in this respect. Not something I would normally do but if the need arises I would.
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Old 07-31-2021, 05:43 AM   #3
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Hmm. If you turn off the hwh it should revert to the chassis leveling valves and fill back up. If you turn off the hwh and turn off parking brakes it should fill up to ride height. I have some manuals for troubleshooting if needed.
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Old 07-31-2021, 09:22 PM   #4
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What ever you do, if you do get it aired back up and you plan on going under the chassis to inspect the undercarriage put some heavy duty rated jacks under the main frame channels to protect from air failure. My leveling sensor between the front axle had a bracket break a weld and when the front end drops air it would crush a person in a heartbeat. Be Safe!
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Old 08-01-2021, 05:39 AM   #5
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Thank you all! I did move it forward to drive on ramps. Safety first!
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Old 08-01-2021, 06:45 AM   #6
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Yes safety first big time. I usually say that when responding to underneath issues. Our coaches sit low so yes, a sudden air drop will crush you. I don't recomend jacks as our coaches frame is up high and coach is very heavy. I have 6x6 ties that I drive up on. I lag bolted two together for the rear and use one on each side for the front. Works well and if air dumps there is safe space to survive. And if you do any work on the system I would dump the air and have coach sit on frame so if it drops it's already down.
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Old 08-01-2021, 11:06 AM   #7
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So cool everyone stressing the safety factor when getting under rigs, especially air bag coaches!

And our front leveler just got knocked out of alignment on a pot hole (Easy adjustment for Dave R., Master Tech (Heck, Master Master Tech!) Chassis Guru.). In our case the front in Travel Mode was about 2" so too high. So we'd manually use the HWH controls to get the front and rear where they looked just about right for Travel Mode, then we unplugged the plug that turned of the HWH Control Box, so it would remain at that height. (This was in an 07 era Magna. And when looking at the HWH Control Box in the Front Driver Bay, it was the Second Plug from the left, in the front row of plugs (Two rows of 4 plugs each on the Top of this HWH Control Box.), it is the only plug with 4 Red Wires going into it.) (And I got this from another CC owner, sending me to a Brian's RV YouTube that talked about this very thing, working around a bad leveler.) But on our 04 Allure, when we had to do a similar manual Ride Height set, it's just a simple fuse to pull, vs unplugging a harness plug. And that fuse is in the same Drivers Side Front Basement bay.

This may not help you, if you have air related problems - but perhaps could help someone else researching problems in the future!

Looking forward to reading what you find out, and good luck!
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Old 08-01-2021, 04:14 PM   #8
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Quote:
Originally Posted by Smitty77 View Post
And our front leveler just got knocked out of alignment on a pot hole (Easy adjustment for Dave R., Master Tech (Heck, Master Master Tech!) Chassis Guru.).
Smitty, is Dave R. one of the techs at Premier?
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Old 08-01-2021, 10:19 PM   #9
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Smitty, is Dave R. one of the techs at Premier?
Yes Dave (And HI!)... Dave R. is a tech at Premier...

It gets confusing, as Premier has Two Dave R.'s - Both longtime CC experts...

Here is the copy and paste from Premier's site:

"David Rutherford specialize in custom tile flooring and backsplashes, heavy mechanics and chassis repairs and service and. An all round expert in highline RV service. For house or chassis service he is among the best of the best."


===

Now, just between us - neither one of them are much to look at!!! And the other Dave R. (Rousey!) is supposedly not much of a fisherman... (But and all around nice man!)...

Sincerely. Mr Rutherford, is a true gent. And, he's my preferred Chassis Expert at Premier... Great to work with. Diligent, and Good People!

Mr. Rousey is another CC veteran, and all around man of interest... (He did the PDI on our current Magna at delivery for us. And put up with all my questions, and more...).

A very deep bench, an Premier... (The Sale's Staff is on the light side, but well - service is what builds a history...) (Hi Louie and Damon!!!)... (And Louie's Daughter, is picking up some of the slack from Dad and Damon!!!)...

===

THANK YOU DAVE. For that soft pitch. It's people I respect the most, that I make the most pot shots at... (I HOPE!!! That was clear here...) - !
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