On Board Air Compressor

Thanks. Odd, but I seem to have a small air leak at the connection. Still got one side up, but wouldn't faze the other side. Hmmmm. Maybe my 50'hose is too long? I lowered the air bags then refilled them to goose the compressor. didn't have DW pump the brakes. Tomorrow.

My Hr has both types of fittings under the front cowl next to the gen. Works well with all my, tire, trailer, and toad needs. I'm very careful about tire pressure. Cheaper to check often than replace.
Jw

Use your on-board compressor. No second thoughts required.

Don't worry about bleeding all the air out of the coach, as it won't happen unless you just leave the line open.

To get to 105psi, you will have to catch the compressor on the cycle to increase pressure in the coach tanks (approaching the 120psi cutoff).

You can have someone fan the brake treadle to induce the cycle, but it's much easier to have a method of monitoring the coach air pressure outside at your inflation point, and a method of bleeding air to below the cut-on pressure of the compressor.

It's easy to make a rig using a 1 to 3 manifold (Lowes), a pressure guage, and a bleed valve. You connect your air input to the single connector on the manifold, and the triple output on the manifold has the pressure guage, the bleed valve, and a connector for your short air hose with inflation connector to the tire.

Here's a couple of pictures of the one I made:






When using this rig, the pressure guage shows pressure from the motorhome air system. When you get your tire pressure above or equal to the pressure in your tire the flow into the tire will stop, then remove the air chuck from the tire, open the bleed valve until the pressure guage drops below your compressor cut on pressure, close the bleed valve, and apply the air chuck to the tire again when the coach pressure exceeds the tire pressure.

Fred

Thanks. I may try it now, or see if I can park next to a tire shop and try it there for backup. Not many truck stops out here.

I do it on my compressor but make sure the tanks are filled all the way up, spit then I fill tires...I run 100# in mine......

My experience is that the on board compressor will work, but to ensure success the compressor will often need to be used while in a filling cycle where it is trying to achieve its cutout pressure (120-130 psi). If your on board pressure is in the operating range of 90-120 you will get poor to none air flow rates. My tires require 100 or 110 psi and for this reason I don't rely on the on board but purchased a stand alone compressor rated at 150 psi max.