ARB Compressor Leak Question

[Retired Jeeper]

I have a dual ARB compressor mounted under the passenger seat of my JLU. It started leaking so I removed the seat and did the standard soapy water test on all the fittings. No leaks at all. However, I found that air was coming out of one of the compressor via what I think is some sort of a pressure relief valve. In the photo I put a red dot on the part from which the air comes out. I also show what the spring and seal look like when removed. The ARB installation guide doesn't show any parts like that and when I looked for replacement parts found a variety of O-rings but nothing that seems to address the issue. Suggestions are welcomed.

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[agentdr8]

Maybe your pressure cut-off switch has failed and that relief valve is preventing further disaster.

 

[Retired Jeeper]

Thanks. That was my first thought. I installed a new PRV from ARB with that in mind although I was fairly certain that wasn't the problem as I have a tank connected which should allow the compressor to run quite a while before hitting the max PSI. The valve in question starts leaking air soon after the compressor starts which is why I am thinking it is the problem.

 

[agentdr8]

The valve in question starts leaking air soon after the compressor starts which is why I am thinking it is the problem.

Ah, then yeah, I'd agree it's probably that valve or the spring doesn't have sufficient tension to hold the valve closed.

 

[GATORB8]

I'm pretty sure I've found the dual part list before.

This is from the single:
ITEM # QTY DESCRIPTION PART # NOTES
01 1 SAFETY VALVE FITTING 320204 1
02 1 SAFETY VALVE SPRING 150115 1
03 1 SAFETY VALVE POPPET 320205 1

https://www.arb.com.au/assets/air-l...M9JYSOwJyQY4eTspAX6U0XSU-EbvZiFGksdsD_slIn-1B

 

[GATORB8]

Okay, I think that was the smaller one, but it used the same set as the standard single:
https://www.arb.com.au/wp-content/uploads/2021/06/3-04.pdf


It's not listed in the one for the twin.
https://www.arb.com.au/wp-content/uploads/2021/01/3-06.pdf

 

[Retired Jeeper]

Okay, I think that was the smaller one, but it used the same set as the standard single:
https://www.arb.com.au/wp-content/uploads/2021/06/3-04.pdf


It's not listed in the one for the twin.
https://www.arb.com.au/wp-content/uploads/2021/01/3-06.pdf

I think you nailed it. I didn't find it in the twin parts list either, but I'm confident it's what's shown on the single. Thank you for the info. Gets me headed the right direction.

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