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I'll definitely have to get back under it and double check the tank bottoms. Lol. I really hope that I am leak free in the tank bottom areas.

Finally got a warm, dry and quiet day to track down the leaks on the 5 ton air system. I say leaks, not leak because it had six leaks that I have found so far. Hopefully that's all of them. Three were the plastic line fittings at the tanks under the passenger step. Two were the fittings into the...

That's a good amount of contact between the tank and plate. If that's the case with mine I'll be in good shape as the truck came with an extra air tank in the pile of parts.

I definitely noticed that with the park brake off and the service brake applied it drops a little pressure, which I would assume is to be expected. But after about a 10 pound drop in pressure the compressor kicks on and runs the psi back up to the 120 psi mark. My son says he thinks he can hear...

I drove it to the yard debris recycling center today with the bed stacked full of debris, it doesn't lose any air with the parking brake off and the service brake applied that I noticed. Making a few more runs in it today to the recycling center and will definitely keep an eye on it to be sure.

Would starting with pressurizing the system via the glad hand still be the best place to start? I know little to nothing about the system beyond the air pressure running almost everything. But I am definitely interested in learning as much as I possibly can about it.

I was going to hook up the air compressor to it today, but its been nonstop driving rain today. But its definitely draining down completely, so I guess it is a safe bet that its not a dash item leaking. Though I did start it up, let it recharge the psi, and the one thing that I have noticed...

I went out and checked it last night a few hours after shutting it down and all the air had leaked out. The truck came with a glad hand connection for a compressor hose and I do have a couple compressors so I will try that approach first with a squeeze bottle of water and soap, as I live on a...

Well it was bound to happen, lol. Brought home my m939 on Tuesday, and Wednesday I noticed when I fired it up that the low air light and buzzer was going off. Looked at the air pressure gauges and they're zero psi. The compressor works, got the psi up to 90. I could here a hiss from behind the...