Author Topic: Coach Sagging Problem Solved....  (Read 3283 times)

Steve Huber Co-Admin

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Coach Sagging Problem Solved....
« on: March 01, 2024, 02:51:01 AM »
Early in the winter I replaced the Valid Power Gear keypad as it had quit working. Also replaced the rear air bags as found they had slow leaks.  About a month later went out to the barn and found the coach had sagged to the left due to the left rear air bags being completely collapsed. It had been fine the night before. Started coach and bags inflated as normal and held. Checked for air leaks and none found. Coach remained level for about 2 weeks. Then one AM found the coach sagged to the right due to the right rear bags being completely collapsed. Coach has been level the night before. Re-leveled coach and checked for leaks. None found. Called Valid as thought problem may have been due to the new keypad. They were very skeptical. Scratched my head for a couple of days and then called Eric for his thoughts. He said it sounded like something was causing air valve(s) to open completely and suddenly. Since it was winter he asked if it was possible there was water in the air system that was freezing in the valves. I told him I drained the tanks regularly. Went back to coach, opened air valves and no moisture was present. Then I realized I had forgotten the small auxiliary tank. Opened the drain and almost drowned… Opps!
Aired up and dumped system multiple times to evacuate as much moisture as possible. No more problems but won’t know for sure until next winter when it gets cold (teens -low 20s). Barn is unheated so I run AH to keep water bay from freezing and front of coach stays relatively warm due to AH radiated heat. Rear axle area is coldest. Thus 99% sure problem is solved.
So, don’t forget about the aux air tank…  and THANKS Eric!
Steve
Steve
2015-          07 Contessa Bayshore C9,  400 hp
2013-2015: 00 Marquis Tourmaline, C12, 425 hp
2005-2013: 01 Contessa Naples, 3126B, 330 hp
The following users thanked this post: Joel Ashley, Bryan Beamon, Fred Brooks, Eric Maclean

Joel Ashley

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Re: Coach Sagging Problem Solved....
« Reply #1 on: March 01, 2024, 03:19:19 AM »
I assume the auxiliary tank is not a feature of all models.
Joel and Lee Rae Ashley
Clackamas, Oregon
36.9 ft. 2006 Monterey Ventura IV, aka"Monty Rae"
C9 400HP Cat
The following users thanked this post: Bryan Beamon

Steve Huber Co-Admin

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Re: Coach Sagging Problem Solved....
« Reply #2 on: March 01, 2024, 03:36:03 AM »
Joel,
I'm referring to the small tank the auxiliary air compressor supplies to keep the air bags filled so the coach maintains its level when parked with engine off. Would probably not be needed in a hydraulic leveling only coach.
Steve
Steve
2015-          07 Contessa Bayshore C9,  400 hp
2013-2015: 00 Marquis Tourmaline, C12, 425 hp
2005-2013: 01 Contessa Naples, 3126B, 330 hp

Joel Ashley

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Re: Coach Sagging Problem Solved....
« Reply #3 on: March 01, 2024, 06:28:20 AM »
My bad.  I didn’t realize that aux. pump had a tank, but thought
that (on automatic leveling mode) it just directly added to low bags
« Last Edit: March 01, 2024, 06:34:22 AM by Joel Ashley »
Joel and Lee Rae Ashley
Clackamas, Oregon
36.9 ft. 2006 Monterey Ventura IV, aka"Monty Rae"
C9 400HP Cat

Gene Obie

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Re: Coach Sagging Problem Solved....
« Reply #4 on: March 01, 2024, 11:54:12 PM »
Steve, where is that auxiliary tank and drain located on your coach?
-Gene

2005 Beaver Marquis, Ruby 40, C-13 Cat 525HP, Allison 4k
Towing 2018 F-150
Washington

Steve Huber Co-Admin

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Re: Coach Sagging Problem Solved....
« Reply #5 on: March 02, 2024, 12:05:05 AM »
Gene,
It's in the right front corner accessible by opening the generator slide. My coach has a Monaco Roadmaster chassis so may be different on Magnum based units.
Steve
Steve
2015-          07 Contessa Bayshore C9,  400 hp
2013-2015: 00 Marquis Tourmaline, C12, 425 hp
2005-2013: 01 Contessa Naples, 3126B, 330 hp