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Topic: Troubleshooting Leveling System (Read 757 times) previous topic - next topic

Troubleshooting Leveling System

My HWH leveling system works fine. The problem is, it is always working. It seems to add, or vent air every time it wakes up, then runs the 12v compressor. Any tips on figuring out where to start on figuring out the problem ?
Dave W. (AKA Toyman )
'03, 270, 36', Build 6095, Pulling whatever I hook it to.

"Don't cry because it's over. Smile because it happened."
Dr Seuss

Re: Troubleshooting Leveling System

Reply #1 –
Sounds like an air leak.  If you level and then turn the HWH off for a few hours, I would expect you would see the side that is losing air drop out of level.  It would give you a place to start looking for leaks.

Rich
Rich and Peggy Bowman
2002 U270 3610 WTFS, build #5939--"Freedom"
2022 Jeep Grand Cherokee Summit 4xe
SMI AirForceOne brake system
PakCanoe 15

Re: Troubleshooting Leveling System

Reply #2 –
Dave,

Go to page below, follow the 2nd link from the top (Leveling System Identification), identify the system on your coach.

Go back to the 1st page, scroll down to find a link to your system Service Manual...it should include a trouble-shooting section.

HWH Service Manuals
1993 U280 SE 40' WTBI, Build: 4359
C8.3 300hp, 6-Speed, Exhaust Brake
960 watts on the roof (6 x 160)
Sorento (or BOLT) on a Kar Kaddy SS
"Nature abhors a vacuum"

Re: Troubleshooting Leveling System

Reply #3 –
Quote from: Rich Bowman –
Sounds like an air leak.  If you level and then turn the HWH off for a few hours, I would expect you would see the side that is losing air drop out of level.  It would give you a place to start looking for leaks.

+1  Sounds like classic leak symptoms.  First likely culprit are the 6-pack manifold o-rings.
Learn every day, but especially from the experiences of others. It's cheaper!  - John C. Bogle

2000 U320 36' non-slide / WildEBeest Rescue
2003 U320

Re: Troubleshooting Leveling System

Reply #4 –
Thanks, seems to vent from the front, then next cycle add to the rear. Probably work on it in the fall.
Dave W. (AKA Toyman )
'03, 270, 36', Build 6095, Pulling whatever I hook it to.

"Don't cry because it's over. Smile because it happened."
Dr Seuss

Re: Troubleshooting Leveling System

Reply #5 –
Quote from: toyman –
Thanks, seems to vent from the front, then next cycle add to the rear. Probably work on it in the fall.

The way the system works to maintain level is that it will always try to exhaust the high end/side first, and when it can't get that low enough to achieve level it will then pump up the low end/side. 

I would highly suspect the rear HWH six pack o-rings (RAP6554 or see this post for individual sizes Our leveling system problem )
Learn every day, but especially from the experiences of others. It's cheaper!  - John C. Bogle

2000 U320 36' non-slide / WildEBeest Rescue
2003 U320

Re: Troubleshooting Leveling System

Reply #6 –
Wow! More to this than just dropping the Big Foot jacks ! Know I'll wait till I get back this fall.
Dave W. (AKA Toyman )
'03, 270, 36', Build 6095, Pulling whatever I hook it to.

"Don't cry because it's over. Smile because it happened."
Dr Seuss

Re: Troubleshooting Leveling System

Reply #7 –
When it is level, measure the air bags at each corner. We had a problem where we thought it was an air leak causing one side to lower. Turned out to be a leaky Raise solenoid causing the opposite side to raise. Replaced solenoid.
Just another thought....
Dick
Dick, '03 U320 40' Tag, 2 slides, Coach #6075
Full Timers
2009 Honda CR-V
 

Re: Troubleshooting Leveling System

Reply #8 –
Thanks Dick, this fall, when I return to Texas (hand over heart 🇨🇱) and it's cooler, I'll get a chair, a nice toddy, and measure stuff. Then sit back and figure out for sure what it's doing.
Dave W. (AKA Toyman )
'03, 270, 36', Build 6095, Pulling whatever I hook it to.

"Don't cry because it's over. Smile because it happened."
Dr Seuss