Thread: ARB Airlockers for D3/D4

Not sure on D3, D4 or RRS but the L322 is too clever for itself to do this, as if you use any air - even a tiny amount (I found this out after putting the new airbags in because I had a VERY small leak) the car threw a fault straight away and locked out all the suspension. If it sees the pressure drop without it calling for any air, it chucks a wobbly...

Why on earth wouldn't you want to have a decent on board compressor that could also be used to pump up your tyres as well as operate your locker?

I'd be far more interested in considering how to connect my on board ARB compressor to the air suspension reservoir as a back up than trying to use what is at best is a marginal air compressor to do even more work.

Originally Posted by TerryO

Why on earth wouldn't you want to have a decent on board compressor that could also be used to pump up your tyres as well as operate your locker?

The standard ARB air locker compressor will not pump up tyres - do not get confused between the ARB tyre pumping compressors that have to be modifed with additional gear to work the air lockers and the specific air locker compressor.

Two very different beasts.

Garry

The tyre pumping compressor doesn't have to be modified. Just screw in your locker solinoids which come with the lockers and go.

Originally Posted by garrycol

The standard ARB air locker compressor will not pump up tyres - do not get confused between the ARB tyre pumping compressors that have to be modifed with additional gear to work the air lockers and the specific air locker compressor.

Two very different beasts.

Garry

My ARB lockers work off my air suspension (and tyre inflation) compressor...

Since I made the 'air up kit' for MB I can say it would be easy to use the main tank for a locker. Early models have a bung at the front of the reservoir later models do not have the bung and you would need to take a "T" piece off the line.
I do not know what pressure the locker will take but you will probably need a regulator as the tank gets to 240psi!
It would save some money on the compressor I would think.
If anyone wants to try I still have some bits.

Originally Posted by CaverD3

...
I do not know what pressure the locker will take but you will probably need a regulator as the tank gets to 240psi!
...

I vaguely recall Daniel Bongard from ARB telling me that some US comp guys were using 300 psi in their lockers to maximise engagement speed.

Originally Posted by Slunnie

The tyre pumping compressor doesn't have to be modified. Just screw in your locker solinoids which come with the lockers and go.

Thank you Slunnie.

Having a second compressor that can be hooked up the reservoir full time but with a isolation valve fitted at the reservoir end that is turned off unless needed means there is always a high level of redundency that the standard pretty average system just doesn't have. Again why rely on a compressor that is pretty ordinary to pump up not only your suspension but your new front locker? Lose the compressor and you lose both your suspension and your locker.

I would have thought this was a bit of a no brainier modification given the often reported problems many D3/4 owners have faced while out in the sticks with their Disco's sitting down on their bump stops.

That and a GOE emergency inflation kit and 99% of potential suspension issues that would normally have you stuck on the side of the road or worse out in the bush are pretty much totally avoidable.