Manual inflation of Freightliner suspension

jtfcons wrote:

Monkeyrun wrote:

C20 wrote:
The air valve by the generator in the front isn't smart enough to know in from out. Put you compressor on it and it's an intake.

That had crossed my mind, however, I was uncertain whether there were any components downstream in that line which I might harm doing that.

The air valve described above is primarily intended to inflate tires using the onboard compressor or supply other air needs. The down side to reverse flowing air into the system from this valve is that the incoming air is most likely not dry, so systems using this air supply and also needing dry air might be harmed by this un dried air. I have rarely used this valve to supply the air to the motor home suspension, etc. but when I did I used an inline filter/drier to make the incoming air more dry.

I don't know for sure but maybe that is why some have a connection in the air dryer area, so that that air is routed through the filter before use.

That valve is for airing up the system (brakes) for towing. You can use it for airing up tires and such, but it is installed for towing. Using this chuck for airing up the motorhome tires is really useless. If you need over 95 psi for your tires it will take probably 10 to 15 minutes for each tire to air up. Our shop compressor at 175 psi (100 gallon), it takes me 1 minute per 10 lbs to air up tires. Doug