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Old 10-14-2013, 03:05 PM   #1
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Monaco air system leak

I have been chasing an air system leak forever. I used soap spray with no success. I recently replaced the small air compressor which supports the leveling system. As a result it appears the leak is gone. The only major difference between the old and new unit is Valid Mfg. has a one way valve in front of the compressor where as Power Gear did not install one in the air leveling system. I suspect the system bled back thru the compressor. Valid verified this is a possibility.
I'm sharing this info because I suspect their are a lot of Monaco owners who have system air leaks and not been able to find them.
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Old 10-14-2013, 05:47 PM   #2
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Holiday Rambler air leak

I had a leak that they couldn't find. Just bought this coach and spent the 1st 6 weeks in the shop to find air leak. The coach would level and in a couple of hours the curb side rear would raise up and felt like you were walking uphill. Finally contacted Valid Mfg and corresponded with David he said to have the rear control valve checked for a leak as it sounded as if the ride height system was leaking into the leveling system. Sure enough they took the control valve apart, 7 different valve in one, and found a piece of trash in the valve seat of the one controling the curbside rear leveling and the ride height. Cleaned it out and all is well. It is behaving now and has been level for a week. Will find out if it holds next week on our trip to North Carolina.
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Old 10-14-2013, 05:58 PM   #3
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Quote:
Originally Posted by jhment View Post
I have been chasing an air system leak forever. I used soap spray with no success. I recently replaced the small air compressor which supports the leveling system. As a result it appears the leak is gone. The only major difference between the old and new unit is Valid Mfg. has a one way valve in front of the compressor where as Power Gear did not install one in the air leveling system. I suspect the system bled back thru the compressor. Valid verified this is a possibility.
I'm sharing this info because I suspect their are a lot of Monaco owners who have system air leaks and not been able to find them.
What year and model on your coach. (suggest you put the info in your signature so others can see). Also, I didn't see this posted in the Monaco Owner's Forum. If not there, please get it over there also. Thanks for the info.
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Old 10-15-2013, 04:10 AM   #4
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Originally Posted by Barlow46 View Post
What year and model on your coach. (suggest you put the info in your signature so others can see). Also, I didn't see this posted in the Monaco Owner's Forum. If not there, please get it over there also. Thanks for the info.
Unit is a '07 Dynasty Diamond 1V
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Old 10-15-2013, 07:40 AM   #5
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Monaco air system leak- repost

I have been chasing an air system leak forever. I used soap spray with no success. I recently replaced the small air compressor which supports the leveling system. As a result it appears the leak is gone. The only major difference between the old and new unit is Valid Mfg. has a one way valve in front of the compressor where as Power Gear did not install one in the air leveling system. I suspect the system bled back thru the compressor. Valid verified this is a possibility.
I'm sharing this info because I suspect their are a lot of Monaco owners who have system air leaks and not been able to find them.
************

'07 Dynasty Diamond IV
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Old 10-15-2013, 11:19 AM   #6
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Quote:
Originally Posted by jhment View Post
I have been chasing an air system leak forever. I used soap spray with no success. I recently replaced the small air compressor which supports the leveling system. As a result it appears the leak is gone. The only major difference between the old and new unit is Valid Mfg. has a one way valve in front of the compressor where as Power Gear did not install one in the air leveling system. I suspect the system bled back thru the compressor. Valid verified this is a possibility.
I'm sharing this info because I suspect their are a lot of Monaco owners who have system air leaks and not been able to find them.
************

'07 Dynasty Diamond IV
Pictures? Part numbers? Vendor used?
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Old 10-16-2013, 08:33 AM   #7
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Did your system leak as a whole, or a particular corner. I am trying to find a leak that seems to let the left front corner go down and have used the soap treatment and still have not found it. I did rebuild the three valves that control the front left with no change. Thanks and Happy Trails Bert
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Old 10-16-2013, 08:40 AM   #8
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Hi and welcome to the forum.

I have merged the two threads you started on this topic because our forum rules do not allow duplicate postings.

Thanks for your understanding.

Rick
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Old 10-17-2013, 05:04 AM   #9
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Originally Posted by Jobert View Post
Did your system leak as a whole, or a particular corner. I am trying to find a leak that seems to let the left front corner go down and have used the soap treatment and still have not found it. I did rebuild the three valves that control the front left with no change. Thanks and Happy Trails Bert
The whole system leaked-there was no difference between the front and rear air tanks.
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Old 10-17-2013, 05:39 AM   #10
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I had a leak in the left front and it was the large hose that goes from the top of the air bag to the ping tank. It was leaking where the fitting was crimped at the air bag ,bad crimp. It is hard to see. By luck i felt it with my hand . It is behind the skirt
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Old 10-17-2013, 06:20 AM   #11
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Valid mfg. supplies tech support for the air leveling system used in some Monacos. I think it is 2006 to about 2009. It used to be Valid/Power Gear. Monaco installed a check valve at the tank for the leveling system. That is wrong. The check valve is supposed to be at the compressor. One must remove the check valve at the tank and toss it. Replace with a normal pipe thread air fitting for nylon air tubing. If you call Valid they have all the parts in stock.
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Old 10-19-2013, 07:57 PM   #12
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Our coach has the HWH air leveling on a 06 Dynasty. I did replace the air compressor at one point but will have to go back and check on a check valve. I found a small leak around three solonoids on the front block so replaced the orings on them. Is the air fitting on the air bag replaceable, or replace the bag assembly? Thanks
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