ARB single compressor (CKMA12) for airing up 32" tires and lockers?

[JandDGreens]

If you are certain you are going to get ARB lockers and also want to use it to air up your tires, I would pony-up for a dual ARB. The single will pressurize your lockers just fine (pressure vs volume), but it is not sufficient when airing up larger tires were as the dual compressor will handle the volume also, IE (manufacture specs. attest to this). I also would not want to burn out the little guy on airing up tires and not have it when I really need it on the trail. It also cost twice the amount of many of the compressors on the market designed to fill up your meaty tires. There are so many quality compressors on the market from $150-$450. The only draw back to many of these is the size they occupy much more space than the ARB's do.

I have been using the larger Smitty-Built ($150) air compressor to air up my tires after a day out on the trails. It work very well for me. I have purchased a used set of axles that are loaded with ARB lockers for the future. It came with the single ARB compressor to actuate the lockers. Hope fully everything will be in working order once I finally get them installed.

 

[Patrollife]

I have Air Lockers on my Patrol with the single compressor but I use the Viair 40047 400P-RV portable compressor for airing up 35s on the Patrol and 295/70/R17s on the FJ. I've been happy with the Viair. It's not super fast, but I'm never in a rush on the trail. As Ryanmb21 mentioned, the compressor is certainly one of my most used equipment on the trail. During my most recent trip to Peten, Guatemala the bead popped out of the FJ probably 5 times total, and having the compressor and hi-lift were life savers.

 

[teotwaki]

I have had the CKMA12 under the hood of my truck for six to seven years without a problem.

Yesterday as I fired the compressor up to air a tire the compressor suddenly stopped running. Yikes. I traced out the power and control leads and found everything was fine up to the point of the last plastic connector at the compressor motor's power wires. Apparently as the metal contacts went bad (corrosion?) they overheated and melted the connector's plastic body which broke the electrical connection. A subsequent measurement of the compressor's current was 17.5 Amps no load and 23 Amps under load. Any resistance at the metal contacts could translate into heat so no wonder the connector got hot enough to melt. Definitely an argument against overly extended running of the compressor. I cut the old connectors out and installed Anderson Power Poles with 45 Amp contacts and weather boots to help keep water at bay. Runs great again!

It might be a good idea for folks to periodically unplug the connectors on their compressors and ensure the metal contacts are clean and mechanically fitting together properly. Or replace the connector as I did.

 

[teotwaki]

I just looked up ARB compressor specs and the current draw that I measured is just about right. Here is a link to the PDF of the specs https://www.arb.com.au/assets/air-lockers/6-07.pdf