MY on board air install

Now keep in mind, my install was relatively easy since I didn't have to make the pump bracket, since the york was the stock pump.

Parts:
About 50 feet of air line
1 toggle switch
5 t's the size of your hose barb thread
4 pipe nipples the same size at the "T"s
1 air pressure switch
5 hose barbs
2 air chucks
2 gauges
1 blow off valve
1 breather element

I started off by removing the suction side line from the compressor and ac box. I put it in a band saw and cut it off about 4 inches off the fittings. I mounted the breather there with a big hose barb, but didn't use a hose clamp so that it can be easily removed to drop some air oil in there periodically.
I then removed the pressure hose and cut it in a band saw too. You want to leave as much of this hose as possible, because when the compressor has been running for a while, it will get hot enough to melt a regular air line.

From there I tied the pressure side line into 2 "t"s in sessesion, one "t" for the pressure switch, and the other one for a line to go into the cab.

I then ran a line from the back of the second "t" down the frame rail, and into the back of the Bronco. There it is "T" again, one side to a releif valve, and the other side to another "t". This "t" feeds the tank, and the rear air chuck.

The line that feeds the cab goes through the fire wall, and to a "t" and a gauge and another chuck.
For the power side of it all, I cut the existing clutch power wire after the slug connector, leaving enough wire to run to the pressure switch on the fender. Hook up the clutch wire to the pressure switch. I used pressure switch model 9013fhg2j27 (square D) from grainger. It was less than 20 bucks, and works good but I had to bump up the pressure a bit. Now from the pressure switch, you have to run a feed wire into the cab, and to a power source. You should run a toggle switch so that the power can be cut off when you dont need it running, but it's not necessary. Get power for the switch from a source that's only on when the ignition it on.
From there it's all just mounting things how you want them, and making sure you dont have any leaks. Any questions feel free to ask.

 

Heres how I have all mine set up, tach on the column, oil pressure, temp and volts on the left and the air on the right, all in good view.

 

Good work. You should write up a tech article on that.

 

awesome tech man

-cutts-

 

just ordered some soleniods to run the air horns off of

 

awesome tech, ran any tools off of it yet?

 

ran the nice 1/2 drive impact that one of the guys im working for so kindly donated for me helping him out. Changed 2 tires with it, pressure dropped drastically affter the 6th or so lug nug, and pump kicked in. I ran the air chisel for kick and giggles on some 4x4s, and pumped up a tire and blew my floors out with a blow gun. It keeps up really good, and with normal use catches up before I'm using the tool again.

 

did you rig anything up to bump the idle up while in use?

 

No, but I have plans for it. I didnt want to waste money rigging it up with the stock carb, so I'll tackle that when I find a decent used 600cfm carb for it.

 

Anyone have any Ideas on what to use to bump the idle up like KO said?

 

great tech, pics, and write up man!

 

yeah its amazing the pics a camera phone will take

 

I found a small solenoid and braket in the junkyard that would work to kick your idle up. It was of an early 80's LTD with the vv carb. It grounds through the braket and the wire is hot when the compressor kicks on. It has a little pin it kicks out against the throttle lever to raise the idle. I used it on my Bronco when I put my a/c in. Its adjustable and I got it to work fine with my holley 2 bl. It should be adaptable to pretty much anything, I can take a pic if you need.

 

If you wouldnt mind, that would be great.

 

I've used both a solenoid like surewhynot explained and a manual choke cable to good effect for bumping up the idle. In fact, I've still got one of those solenoids laying around somewhere. I'll hunt for it tomorrow and if I find it you can have it for the cause.