Air Compression Options (lockers and tyres)

**Jitterbug** · 1st February 2012, 02:28 PM

I have just bought a set of front and rear diffs with ARB air lockers already installed (as well as a few other goodies) to go on my 90 but without the compressor or switch gear.

What are my options for air supply and control? I want something that i can use to pump up my tyres also.

Would I be better going for a compresser / air tank combo so I will always have air pressure available for the lockers (and possibly horn whilst i am at it) or would a regular compressor be the better option?

ARB or other?

I guess I need some kind of air regulator valves to operate the lockers? Does anyone know what I need? I have no experience of air lockers or compressors so am flying blind at the min.

Thanks for the help,

Dave

**blitz** · 1st February 2012, 03:19 PM

I have the ARB air compressor for my lockers and they are able to pump up tyres if needed but if i was going to do it again i would modify an A/C compresor and make my own endless air system also using an air reciever - small one from a truck wreckers.

They are far superior for pumping up tyres, can run pretty much constantly forever if needed (air tools) and if you want you can plumb a small line to your winch and dizzy to give positive pressure when around water.

**101RRS** · 1st February 2012, 04:01 PM

Originally Posted by blitz

I have the ARB air compressor for my lockers and they are able to pump up tyres if needed

I assume you have the larger tyre pump up ARB compressor rather than the small purpose built diff lock ARB compressor that has a very small tank built into it.

The special ARB air compressor for air lockers cost about $180 where the larger ones are in excess of $300 and while you might get the small compressor to pump up one tyre I would have thought that would be about it.

If you want the one compressor to do all, I would get a full size ARB connect it to a tank with appropriate outlets for tyres and diff locks.

Garry

**Jitterbug** · 1st February 2012, 04:09 PM

At the moment I am leaning towards the 12v compressor & small(ish) air tank combo. I dont have the time at the moment to go with the air con compressor option.

Can anyone tell me what pressure do the lockers require to operate?

And any idea where to get hold of solenoid valves and a pressure switch?

**101RRS** · 1st February 2012, 04:14 PM

Originally Posted by Jitterbug

And any idea where to get hold of solenoid valves and a pressure switch?

Do a search of '101 Ron' posts on the topic - he has onboard air (air con compressor) running into a tank which runs his front ARB locker and also an air outlet to pump up tyres - his works and he has posted in detail what he has fitted.

Garry

**Jitterbug** · 1st February 2012, 04:46 PM

Trying to get my head around this...

I need a pressure switch between the compressor (12v or air con pump) and the tank to turn the compressor on if the pressure drops below x and off if it reaches y.
A three way junction coming out of the tank, one for tyre inflation, and one for each of the front and rear lockers. The lines to the lockers each need a solenoid valve operated by a switch in the cabin.
I should also have an isolation switch for the compressor so it only comes on when I want it to AND the pressure is below x.

Does this sound right? Any idea what x and y should be?

Dave

**Jitterbug** · 1st February 2012, 04:56 PM

I am going to answer my own question here looks like x (on) should be 85 and y (off) should be 100psi.

Any ideas where to shop for the valves/switches/tank/hose? I am in Brisbane if that helps...

**mattyg** · 1st February 2012, 05:02 PM

Hi Mate, try Fittings Express. They are in Brendale or you can order / browse online.

I got a buch of stuff from there to do my diff, tc and gearbox breathers.

They were very helpful.

**Jitterbug** · 1st February 2012, 05:03 PM

150 psi air pressure switch ARB Diff lock compressor - In Stock at www.roadrunneroffroad.com.au

Just found this that says 110 to 150 switch "correct for arb lockers". Now I am confused. And also having a conversation with myself! Haha

Can anyone clarify?

**Tuffrangie78** · 1st February 2012, 05:49 PM

I don't know if this is of any help, but I have a new ARB diff lock and compressor (73 LPM) and from the compressor I have 1 small line going to the diff lock and a large line going through a one way valve to a small air tank, maybe 5 liters or there abouts. From the tank there is a line that uses the stored air that goes to a fitting mounted on my car where I can connect an air line to pump up my tyres....it works really well. My compressor is regulated so that it pumps to 120psi then turns off and turns itself back on again when the pressure drops below 80psi. The diff lock as such doesn't run off the stored air, when I flick the diff lock switch the compressor kicks in for a second and the diff lock is engaged then the compressor turns off again. The only switches I have are the two that came with the compressor.
Again I'm not sure if this helps, but I think it's in the same ball park as what your after....I hope

Cheers Karl

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