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Old 09-13-2022, 06:41 PM   #1
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Location: Sun city west, az
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Pressure gauge

The green hand goes down from 120 to 60 lbs in an hour. Red hands stays steady. Rear of the coach goes down. Not sure which pressure tank controls breaks or aor shocks. Leaving for a 1000 mile
trip in a few days. May not have time to correct the problem. Not sure of I should chance the trip. Want to get the coach out of Bend, Or for the Winter. Both hands on pressure gauge does come up to 120 lbs in less than 10 tban.ins and stays at that level as long as the motor is running. This problem just occurred all of a sudden. Any advice is appreciated.
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Old 09-13-2022, 06:58 PM   #2
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What year is your coach and what chassis is it built on ?

That amount pressure drop in that short a time is a major leak and has to be delt with .

Your air pressure system should also build faster than 10 mins .
Slow build time indicates the leak is close to the compressor's capacity .

One tank supplies the front brakes , the other the rear .
Air pressure supply to the suspension from which tank is dependent on the chassis manufacturer.
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Old 09-13-2022, 09:09 PM   #3
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Oskkosh chassis. Most older foretravel use this I believe
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Old 09-13-2022, 09:14 PM   #4
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Motor home is 1987 foretravel villa o red 3600. My pressure may build from 0 to 120 in less than 10 mins but as you said maybe too slow

a 1997
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Old 09-13-2022, 09:18 PM   #5
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Maybe I should drain the tanks while I am trying to figure this problem out. Read some where that it should be done on a periodic basis

should be and then
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Old 09-14-2022, 07:54 AM   #6
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Need to check and make sure no water in any of the tanks. Water is bad for the system.

When was the last time the air dryer was replaced?

There are many places for air leaks. You have the brake system and you have the suspension air ride system. I do not know much about that old of a coach but if was like my 1997 U295 was it sounds like one of the valves in the 6 pack in the back is leaking. I am sending you a pm.
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