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I took a look at this possibility and discovered that the lines are reversed on the truck even though they. Put the red on the drivers side and yellow on the passenger side. They are positioned correct in the front oft he truck correct but the glad hands are also mis identified. Thanks to...

I looked up the Haldex ABS brake system. Also the Bendex ABS system, they both show the pressure to release and activate the parking brake axel to be between 90 and 120 psi. Maybe I am not explaining it right. Something might need to be adjusted or something is stuck. I just don't know where...

I have had this trailer for 2 years. It has always required 100 to release the spring brake. My international truck airs up pretty quick and stays above 100 with no problem. The trailer has Haldex ABS brake system. I don't know if there is a setting that can be changed to lower the spring...

Yes, I closed the valves. The truck pressured back up, but it took several minutes.

The trailer requires minimum of 100psi to free the parking axel. I changed the glad hands to quick connects. The moment I open the valves , the pressure falls to 60. It falls lower if the truck idles. Increased rpm to 1000 and the air pressure maxes out at 60 in both primary and secondary.

I tried that. The primary fell to 60. The secondary fell to 90. There was no air leak sound from the truck or trailer.

M923a2

The trailer is a 20 ton tilt trailer with ABS brake system. I don't think the lines are crossed, but I am not familiar with this type of truck. I had the trailer working with an international truck and it works fine. Any ideas what to look for?i just bought this truck from jgator. Everything...