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Yea, you also never place yourself inline with the spring…

Yes they can be rebuilt, I seem to recall one of the vendors here, perhaps Superman, having the diaphragms. If you are confident in your understanding of what needs to be done to restrain the beast, it is not that complicated. But it is one of those evolutions where a mistake can kill you and...

I did a video showing how to bypass all those 2ways… I also explain a little how all the different air supplies/parts interact.

Both front glad-hands must be vented. If the red one isn’t , it will store air and prevent you from engaging the park brake. If the blue one is not vented, that will store air and cause the service brakes not to release when you let off the pedal… it is dead easy to bypass the 2way check...

While you are looking at the wet tank you may notice it is plumbed incorrectly on the A0. 100% of the dryer air should flow thru the wet tank on its way to the brake tanks. On the A0 they Td the wet tank off of the dryer output, so only maybe 25% of the air used by the brakes ever sees the...

Well if you are putting air into the wet tank directly, you can do a few things to eliminate where it might possibly be going. On the side of the wet tank toward the rear of the vehicle there is a protection valve that feeds accessories(looks like a pressure regulator). It stops airflow out of...

what model/version trucks? is it making any air at all? If it is I would connect shop air and first look for leaks without the engine running. Way easier to find that way. without CTIS controller you can inflate with a pair of jumpers. H in the connector is 24V. Place a jumper from H to R...