Outer Limits 4x4 Board

For you guys with ARB lockers & compresors.

I made a few observations last night whilst I briefly played with my new front locker.

1. The compressor doesnt actually operate until it gets a need for air, ie the comp switch can be on but wont start til you turn on the locker switch.
Is that correct or did i still have air in the line from ARB testing etc

2. When the comp is turned off, either by switch or ignition , does it release the air in the line>>, like the factory one does??

3. the system seems to have enough air to provide a couple of locker activations??

Is there any real need for the comp switch anyway.

Why not just bridge that one & have the comp turn on by the locker switch. Just seems like too many swithces now, ie comp switch, front locker switch & factory rear locker switch. Man I'm running out of places for switches!!!.

any info appreciated

cheers

Ian,

The compressor just runs a pressure switch (105psi outlet) on the side of the reservoir, usually in centre outlet. So it only runs when it gets low on pressure (80 Psi I think??)

The only time it releases pressure is when you disengage the locker, and that is the lines only, the compressor holds its pressure all the time. unless of course it's got a leak

As far as removing the switch, can't see a problem with that as long as it is wired up to the ign or acc. as it would be a problem if it developed a small leak and kept running while it was turned off. (believe me it's very annoying when it does it in the middle of a cold wet night if you forget to turn off the switch! hehe)

Rob

4runna,

yeah thanks that what I thought.

of course having 2 switches does reduce the chance of accidental locker engagement.

But I think I will do away with the comp switch

If I just hide it away somewhere left in the on position then that would alleviate having to re wire the setup , or does the switch go off when the car is turned off. (some do , some dont)



cheers

To be honest I'm not sure what ARB wire them up to as I installed my last one and I wired it direct off the battery (I think they would probably do it this way though)

did they go for the drivers side mounting of it? not much room on the other side if you have dual batteries.

Rob

Rob,

yeah comp is on the drivers side, I wanted to save the other side in case I ever do get a second battery.

Anyway i'll be able to experiment a bit today,

cheers

Ian

Congrats on the new diff lock!

Because the ARB compressor has the tank it takes a little while (5-10 seconds?) to generate the 80+ psi required to activate the locker (when turned on with empty tank.) If you turn on the compressor only when you want the locker to activate it could take longer before the diff actually locks - which may not be a good thing.

Your theory about leaving the compressor on all the time shouldn't create too many problems - you'll just hear the compressor kick in for a few seconds every day or so as it tops up again.

Cheers,

Scott

Like any other moving part they wear out!
I would not run the compressor more than required as they can tend to lose pressure so it could be running more than nessacery.
Key" off" releases the locker but leaves the compressor charged.
J Top

Like any other moving part they wear out!
I would not run the compressor more than required as they can tend to lose pressure so it could be running more than nessacery.
Key" off" releases the locker but leaves the compressor charged.
J Top

keep your compressor switch because then you can rig up a quick fit air hose to your front bumper to pump up your tyres

switch goes on, pump up tyres, switch goes off, compressor turns off, switch goes on, switch goes off, switch goes on BOOM... just blew up my compressor... switch goes off