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yea the test should be applicable to any truck with an anti-compound configuration. How the brakes are adjusted might effect the results you see, but it is still a matter of the anti-compound rolling off the park as the service is being applied. Like I mentioned in the start of the video, I...

Well its not the front QR you hear, it is the park valve itself venting the air in the line between the park valve and the anti-compound valve. up behind the center of the grill above the center of the radiator is a vent port thru the floor(in under/forward of the heater). That is where the...

The anticompound is the only component that controls air to the park spring chambers. It is a relay valve, much like the service brake relay right below it on the crossmember. It differs from the service relay in that it has a 2way check valve built into its input, so can accept two different...