Air tank problems.

[johns4104s]

Buswarrior,

You were right it takes a long time to air up. I am looking at putting the Expello valve back in the system, but having a pull drain attached so It can be manually drained daily,

I belive this valve when aired up sends a reading of air to the front gauge and to the low air buzzer/light, which in turn allows you to ee the air on the front gauge faster than being streight though piped and not having it there.

What do you think??

Thanks

John

[buswarrior]

I'd go with your original plan, scrap that auto drain thing.

If it is what we think it is, the wires are for the heater to keep it from freezing in winter temps.

Lighten the coach and simplify your plumbing?

The air gauge gets its pressure source elsewhere, and the low air warning too, deeper in the air system.

If the gauge on the dash isn't up, you aren't ready to drive. With that full tank of water, you have grown accustomed to that length of time being far shorter than it should be.

That quickness was at the expense of having the designed volume of air available for the air system, primarily the brakes.

In stop and go traffic, in the rain, with air wipers, I expect that you would have had trouble maintaining pressure with that volume occupied by water.

happy coaching!
buswarrior

[bevans6]

Excellent example of why popping the tanks often is good practice.  One thing - the venturi effect of blowing air through the drain valve will often, if the ambient temperature and humidity is right, cause water vapour to form outside the tank as the air rushes out and is cooled by the pressure change.  Similar to visible vortices off wing tips in humid weather.  So if you suddenly one day seem to have more water than normal, think about that as a possible cause.

Brian

[johns4104s]

Well it never did air up, so I put the Expello Valve back in the bottom of the tank, I also put a manual drain between the tank and the Expello. My air comes up great, When I have in the past mauverd around the yard the air gauge would quickly drop down to 80 psi. NOW it stays right up at 105 t0 115 no matter how many time a touch the brake.

You were right about having more air and not as spungee Buswarrier , also you mentioned about the 24 volt going to the Expello for heat, I think your right cause it does not appear to do anything else.

Thanks

John.