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 > Air Leak UPDATE FIXED!

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Executive

California/Arizona/South Dakota

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Posted: 12/28/18 11:58am Link  |  Quote  |  Print  |  Notify Moderator

Hello all. I hope everyone had an enjoyable Christmas. Looking forward to the new year. To end this year, my coach decided to present me with a new problem. One that I need to fix ASAP. When the coach is idling, in drive, I am losing air pressure. Idling in gear at 5mph for a couple blocks and I will lose about 30psi. Driving at speed and the compressor keeps the air up but stopping at traffic lights and I can see the pressure begin to drop. I've blasted what fittings I have found and have located 5 small leaks which I will fix. The sixth is a pinhole in the front air tank so that will have to be replaced. None of these leaks are sufficient to cause the air pressure drop I'm experiencing. Further investigation revealed a possible culprit but I'm not sure how to proceed. With the coach idling, in gear, parking brake set, I can hear air escaping from the door air seal. I assume, (yeah, I know what that means) the air seal allows the psi to drop. What I don't know is how to trouble shoot it. So far, I've found no one that is familiar with how this seal works. I would guess there is a solenoid somewhere that controls it. Again, I assume it would have to be adjustable in order to control the psi to that seal but I could be wrong. I put a call into Monaco but I was 15th in cue so I left a voice mail and am waiting for them to call back. If anyone here who has had a similar problem and can point me in the right direction, that would be greatly appreciated. Thanks in advance....Dennis

* This post was last edited 01/10/19 09:35pm by Executive *   View edit history


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ksg5000

Oregon

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Posted: 12/28/18 01:31pm Link  |  Quote  |  Print  |  Notify Moderator

If the rig is parked/running can you open the door and apply soapy water to the door seal to spot a leak - kinda like finding a leak in an air mattress? Just a thought.


Kevin

mike brez

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Posted: 12/28/18 02:16pm Link  |  Quote  |  Print  |  Notify Moderator

Time to trade her in for a new one. [emoticon]

Sorry I have no clue but Merry Christmas to you and yours and happy New Year.
Hope it's a easy fix.


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Two Jayhawks

Lenexa Kansas

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Posted: 12/28/18 03:01pm Link  |  Quote  |  Print  |  Notify Moderator

Sorry Dennis I can't comment on your question regarding the door seal. Are all your air springs passing the leak test?


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Big Katuna

Deland, FL

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Posted: 12/28/18 03:46pm Link  |  Quote  |  Print  |  Notify Moderator

Both my bigger air leaks were ride ht valves.

Maybe send Dou Rainer a PM?


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Kevarino

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Posted: 12/28/18 03:57pm Link  |  Quote  |  Print  |  Notify Moderator

I found this thread on another forum

air-door-seal

* This post was edited 12/28/18 04:12pm by Kevarino *

wildmanbaker

Kennewick, Washington

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Posted: 12/28/18 04:55pm Link  |  Quote  |  Print  |  Notify Moderator

Dennis, you might try "Flex Seal" on the parts that are leaking. I know of someone that used it on a tire sidewall that had a leak you hear and feel, and it sealed it for at least a month.
Good luck


Wildmanbaker


vegasfoodguy

Reno Nv

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Posted: 12/28/18 05:29pm Link  |  Quote  |  Print  |  Notify Moderator

Executive wrote:

Hello all. I hope everyone had an enjoyable Christmas. Looking forward to the new year. To end this year, my coach decided to present me with a new problem. One that I need to fix ASAP. When the coach is idling, in drive, I am losing air pressure. Idling in gear at 5mph for a couple blocks and I will lose about 30psi. Driving at speed and the compressor keeps the air up but stopping at traffic lights and I can see the pressure begin to drop. I've blasted what fittings I have found and have located 5 small leaks which I will fix. The sixth is a pinhole in the front air tank so that will have to be replaced. None of these leaks are sufficient to cause the air pressure drop I'm experiencing. Further investigation revealed a possible culprit but I'm not sure how to proceed. With the coach idling, in gear, parking brake set, I can hear air escaping from the door air seal. I assume, (yeah, I know what that means) the air seal allows the psi to drop. What I don't know is how to trouble shoot it. So far, I've found no one that is familiar with how this seal works. I would guess there is a solenoid somewhere that controls it. Again, I assume it would have to be adjustable in order to control the psi to that seal but I could be wrong. I put a call into Monaco but I was 15th in cue so I left a voice mail and am waiting for them to call back. If anyone here who has had a similar problem and can point me in the right direction, that would be greatly appreciated. Thanks in advance....Dennis



Dennis, You may want to look into an ultrasonic leak detector. Find on Amazon or Ebay, makes finding the smallest leaks a piece of cake.


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Tom/Barb

Oak Harbor, Wa

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Posted: 12/28/18 08:02pm Link  |  Quote  |  Print  |  Notify Moderator

"" The sixth is a pinhole in the front air tank so that will have to be replaced. ""

That would worry me.


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MountainAir05

New Mexico

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Posted: 12/28/18 08:56pm Link  |  Quote  |  Print  |  Notify Moderator

If you don't have maybe this will help. Don't remember if you have a 2005 or later.

https://www.monacocoach.com/resources/media/manuals/2005_Executive.pdf

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