On board air

Same as a truck, leave the tank charged and bleed off the water with a manual valve on the bottom of the tank in the morning.

A/c compressors need oil and for their bearings and seals, that oil is in the a/c gas. no oil, siezed compressor.

Hi TehEkHo

I have an old AC compressor that lived under the bonnet of my HJ45 troopy many years ago. I haven't fitted it to the present HZJ75 because space limitations
make it a bit more of a challenge to drive it from the engine and my 12volt compressor does the job but no where near as well. As far as lubrication went I just took the plug out of the side and squirted in a small quantity of gear oil mixed with a little Wynns additive every now and then. The air delivery line went to a piece of 2" water pipe with the ends closed off and a drain valve in one end. This pipe was mounted vertically behind one of the uprights of the 'roo bar. I crammed as much steel wool into the pipe as I could and this served as a separator to take the oil that left the compressor out of the air. The air then went to a tank with a drain valve in the bottom and a pressure relief valve in the top. The air that came from the tank had no discernible oil in it.
I don't know if leaving the pressure in the tank does any harm but personally I have always vented the system through the drain valve at the end of the day.
You can get dump valves that operate automatically when an amount of water is collected in the air tank but I don't see the necessity for them on a car unless you want your little truck to go *pt-schhhhhhhhhhh just like a big truck.
As far as the time taken to inflate tyres with a 12 volt jobby versus an engine driven one I have never seen even a fairly good 12v one come even close.

Cheers
Pop

Hi TehEkHo,

You will find the system will bleed itself off over a single or couple of days either back through the compressor or small leaks in the system.

When I did my system, I was carfull to use liquid thread sealer on all connections as well as pinch clamps for the hoses. There is a one way valve after the endless aircompressor as well but the system only stays charged for 24 hours. This is not a bad thing as the system works as it should for when I need the air.

My install can be seen at ->http://www.grungle.com/endlessair.html

Regards
David

I had an endless air setup on my old Hj75. Fits easy on that motor.

I found a twin piston a/c pump from a Jap import car that a repair shop had lying around. The twin piston a/c pump where not that popular as they are a bit larger and harder to fit under the bonnet of new cars but they did have a small oil sump that kept the unit lubricated and did not rely on lube in the gas.

This kept going for over 10 years until I sold the car with it still working with no servicing or adding oil to it.

I ran the air into an old auxillary air tank from an International truck that I picked up from a truck wreckers yard. (standard air fittings just screw onto these) On this I also fitted a blow off valve set to 110psi.

This was the best air compressor I have ever seen operate and could pump tyres faster than any others and keep going to pump multiple cars. Rev the car up and it would just pump even faster.

David